Built 2026-10-14 (14 October 2026)

Ft Lewis Weather Records (USC00053016)

Record envelope, standing records and threshold days for Ft Lewis (USC00053016), Colorado, United States, with 112 years of record.

Key Facts for Ft Lewis

  • Ft Lewis (USC00053016) is a weather station in Colorado, United States at 37.23 latitude and -108.05 longitude, 2,321 m (7,614 ft) above sea level.
  • The station reports from 1915 to 2026, 112 years of record.
  • 1,464 records set at Ft Lewis still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Ft Lewis set a daily record high minimum temperature of 13.3 C (55.9 F) on 29 August 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Colorado, United States, 37.23 latitude, -108.05 longitude.
  • Elevation: 2,321 m (7,614 ft).
  • Period of record: 1915 to 2026, 112 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

32 days at or beyond a record
Daily record high and record low at Ft Lewis, with 2026 drawn through them The band shows the record high and record low for each calendar day at Ft Lewis. The lines show the 2026 daily maximum and minimum. 32 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Ft Lewis. The lines show the 2026 daily maximum and minimum. 32 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Ft Lewis, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan15.6 C (60.1 F)-37.2 C (-35.0 F)11.1 C (52.0 F)-17.2 C (1.0 F)
Feb16.1 C (61.0 F)-35.6 C (-32.1 F)16.1 C (61.0 F)-20.6 C (-5.1 F)
Mar25.0 C (77.0 F)-26.1 C (-15.0 F)25.0 C (77.0 F)-8.9 C (16.0 F)
Apr25.0 C (77.0 F)-20.0 C (-4.0 F)21.1 C (70.0 F)-11.1 C (12.0 F)
May32.8 C (91.0 F)-11.7 C (10.9 F)27.2 C (81.0 F)-5.6 C (21.9 F)
Jun37.2 C (99.0 F)-8.9 C (16.0 F)31.1 C (88.0 F)1.7 C (35.1 F)
Jul38.9 C (102.0 F)-1.7 C (28.9 F)32.8 C (91.0 F)2.8 C (37.0 F)
Aug33.9 C (93.0 F)-3.3 C (26.1 F)32.8 C (91.0 F)8.9 C (48.0 F)
Sep31.1 C (88.0 F)-8.3 C (17.1 F)23.3 C (73.9 F)7.8 C (46.0 F)
Oct26.7 C (80.1 F)-16.1 C (3.0 F)n/an/a
Nov21.1 C (70.0 F)-26.1 C (-15.0 F)n/an/a
Dec17.2 C (63.0 F)-31.1 C (-24.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Ft Lewis by the year they were set 1,464 records at Ft Lewis still stand. 2026 holds the most, with 34. 0102030401917: 111918: 171919: 201920: 291921: 161922: 241923: 101924: 271925: 121926: 111927: 161928: 111929: 71930: 71931: 121932: 101933: 211934: 151935: 141936: 131937: 131938: 131939: 221948: 51949: 141950: 141951: 201952: 181953: 161954: 91955: 141956: 131957: 161958: 101959: 131960: 81961: 151962: 221963: 171964: 111965: 141966: 121967: 121968: 121969: 151970: 121971: 231972: 101973: 171974: 111975: 171976: 61977: 81978: 141979: 161980: 101981: 111982: 91983: 131984: 161985: 151986: 191987: 91988: 71989: 281990: 101991: 111992: 131993: 91994: 71995: 181996: 191997: 71998: 151999: 192000: 232001: 82002: 182003: 172004: 252005: 112006: 182007: 122008: 132009: 32010: 112011: 152012: 162013: 302014: 142015: 162016: 82017: 172018: 162019: 112020: 182021: 132022: 72023: 92024: 122025: 192026: 341917192819391958196919801991200220132024
1,464 records at Ft Lewis still stand. 2026 holds the most, with 34.
Standing records at Ft Lewis by the year they were set
Year setStanding records
191711
191817
191920
192029
192116
192224
192310
192427
192512
192611
192716
192811
19297
19307
193112
193210
193321
193415
193514
193613
193713
193813
193922
19485
194914
195014
195120
195218
195316
19549
195514
195613
195716
195810
195913
19608
196115
196222
196317
196411
196514
196612
196712
196812
196915
197012
197123
197210
197317
197411
197517
19766
19778
197814
197916
198010
198111
19829
198313
198416
198515
198619
19879
19887
198928
199010
199111
199213
19939
19947
199518
199619
19977
199815
199919
200023
20018
200218
200317
200425
200511
200618
200712
200813
20093
201011
201115
201216
201330
201414
201516
20168
201717
201816
201911
202018
202113
20227
20239
202412
202519
202634

All-Time Record Progression

4 new records
When Ft Lewis set new all-time records 4 all-time records were set at Ft Lewis between 12 January 1963 and 22 February 2019. Each dot is a new record. Record low minimum temperatureRecord high maximum temperatureRecord snow depth12 January 1963: Record low minimum temperature -37.2 C (-35.0 F)4 July 1973: Record high maximum temperature 38.9 C (102.0 F)3 February 2008: Record snow depth 124.5 cm (49.0 in)22 February 2019: Record snow depth 142.2 cm (56.0 in)197019801990200020102020
4 all-time records were set at Ft Lewis between 12 January 1963 and 22 February 2019. Each dot is a new record.
When Ft Lewis set new all-time records
DateKindDetail
1963-01-12Record low minimum temperatureRecord low minimum temperature -37.2 C (-35.0 F)
1973-07-04Record high maximum temperatureRecord high maximum temperature 38.9 C (102.0 F)
2008-02-03Record snow depthRecord snow depth 124.5 cm (49.0 in)
2019-02-22Record snow depthRecord snow depth 142.2 cm (56.0 in)

Wettest Day of Each Month

Mar: 63.5 mm (2.5 in)
Record daily precipitation for each month at Ft Lewis The wettest day on record for each calendar month at Ft Lewis. The most was 63.5 mm (2.5 in) on 22 March 1924. 020406080 Jan: 42.4 mm (1.7 in), 29 January 1980 Jan Feb: 43.2 mm (1.7 in), 16 February 1927 Feb Mar: 63.5 mm (2.5 in), 22 March 1924 Mar Apr: 56.9 mm (2.2 in), 3 April 2004 Apr May: 26.9 mm (1.1 in), 24 May 1992 May Jun: 56.6 mm (2.2 in), 18 June 1949 Jun Jul: 51.3 mm (2.0 in), 3 July 1931 Jul Aug: 54.1 mm (2.1 in), 30 August 1936 Aug Sep: 58.4 mm (2.3 in), 21 September 1997 Sep Oct: 53.3 mm (2.1 in), 7 October 1972 Oct Nov: 42.7 mm (1.7 in), 15 November 1991 Nov Dec: 62.2 mm (2.4 in), 6 December 1966 Dec
The wettest day on record for each calendar month at Ft Lewis. The most was 63.5 mm (2.5 in) on 22 March 1924.
Record daily precipitation for each month at Ft Lewis
MonthRecord daily precipitation (mm)Date
Jan42.4 mm (1.7 in)29 January 1980
Feb43.2 mm (1.7 in)16 February 1927
Mar63.5 mm (2.5 in)22 March 1924
Apr56.9 mm (2.2 in)3 April 2004
May26.9 mm (1.1 in)24 May 1992
Jun56.6 mm (2.2 in)18 June 1949
Jul51.3 mm (2.0 in)3 July 1931
Aug54.1 mm (2.1 in)30 August 1936
Sep58.4 mm (2.3 in)21 September 1997
Oct53.3 mm (2.1 in)7 October 1972
Nov42.7 mm (1.7 in)15 November 1991
Dec62.2 mm (2.4 in)6 December 1966

Period of Record Coverage

1917 to 2026
Days with data per year at Ft Lewis 103 years of record at Ft Lewis, 1917 to 2026. 24 years have data for under 90 percent of days and are left out of rankings: 1917, 1919, 1920, 1940, 1948, 1967, 1971, 1982 and others. 1917: 147 of 365 days1918: 344 of 365 days1919: 284 of 365 days1920: 257 of 366 days1921: 359 of 365 days1922: 356 of 365 days1923: 359 of 365 days1924: 355 of 366 days1925: 360 of 365 days1926: 355 of 365 days1927: 355 of 365 days1928: 362 of 366 days1929: 362 of 365 days1930: 351 of 365 days1931: 362 of 365 days1932: 365 of 366 days1933: 358 of 365 days1934: 365 of 365 days1935: 365 of 365 days1936: 366 of 366 days1937: 363 of 365 days1938: 364 of 365 days1939: 365 of 365 days1940: 1 of 366 days1948: 152 of 366 days1949: 364 of 365 days1950: 365 of 365 days1951: 364 of 365 days1952: 364 of 366 days1953: 359 of 365 days1954: 361 of 365 days1955: 358 of 365 days1956: 360 of 366 days1957: 329 of 365 days1958: 360 of 365 days1959: 361 of 365 days1960: 365 of 366 days1961: 365 of 365 days1962: 364 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 359 of 365 days1966: 354 of 365 days1967: 316 of 365 days1968: 341 of 366 days1969: 352 of 365 days1970: 360 of 365 days1971: 299 of 365 days1972: 341 of 366 days1973: 355 of 365 days1974: 354 of 365 days1975: 356 of 365 days1976: 360 of 366 days1977: 362 of 365 days1978: 355 of 365 days1979: 357 of 365 days1980: 362 of 366 days1981: 332 of 365 days1982: 277 of 365 days1983: 335 of 365 days1984: 345 of 366 days1985: 340 of 365 days1986: 349 of 365 days1987: 342 of 365 days1988: 350 of 366 days1989: 343 of 365 days1990: 297 of 365 days1991: 315 of 365 days1992: 327 of 366 days1993: 326 of 365 days1994: 332 of 365 days1995: 332 of 365 days1996: 337 of 366 days1997: 312 of 365 days1998: 300 of 365 days1999: 285 of 365 days2000: 307 of 366 days2001: 298 of 365 days2002: 326 of 365 days2003: 339 of 365 days2004: 329 of 366 days2005: 363 of 365 days2006: 364 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 246 of 365 days2010: 333 of 365 days2011: 364 of 365 days2012: 339 of 366 days2013: 290 of 365 days2014: 245 of 365 days2015: 364 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 327 of 365 days2022: 348 of 365 days2023: 365 of 365 days2024: 349 of 366 days2025: 363 of 365 days2026: 244 of 365 days19201935195019651980199520102025
103 years of record at Ft Lewis, 1917 to 2026. 24 years have data for under 90 percent of days and are left out of rankings: 1917, 1919, 1920, 1940, 1948, 1967, 1971, 1982 and others.
Days with data per year at Ft Lewis
YearDays with dataShare of yearComplete
191714740%No
191834494%Yes
191928478%No
192025770%No
192135998%Yes
192235698%Yes
192335998%Yes
192435597%Yes
192536099%Yes
192635597%Yes
192735597%Yes
192836299%Yes
192936299%Yes
193035196%Yes
193136299%Yes
1932365100%Yes
193335898%Yes
1934365100%Yes
1935365100%Yes
1936366100%Yes
193736399%Yes
1938364100%Yes
1939365100%Yes
194010%No
194815242%No
1949364100%Yes
1950365100%Yes
1951364100%Yes
195236499%Yes
195335998%Yes
195436199%Yes
195535898%Yes
195636098%Yes
195732990%Yes
195836099%Yes
195936199%Yes
1960365100%Yes
1961365100%Yes
1962364100%Yes
1963365100%Yes
1964366100%Yes
196535998%Yes
196635497%Yes
196731687%No
196834193%Yes
196935296%Yes
197036099%Yes
197129982%No
197234193%Yes
197335597%Yes
197435497%Yes
197535698%Yes
197636098%Yes
197736299%Yes
197835597%Yes
197935798%Yes
198036299%Yes
198133291%Yes
198227776%No
198333592%Yes
198434594%Yes
198534093%Yes
198634996%Yes
198734294%Yes
198835096%Yes
198934394%Yes
199029781%No
199131586%No
199232789%No
199332689%No
199433291%Yes
199533291%Yes
199633792%Yes
199731285%No
199830082%No
199928578%No
200030784%No
200129882%No
200232689%No
200333993%Yes
200432990%No
200536399%Yes
2006364100%Yes
2007365100%Yes
2008366100%Yes
200924667%No
201033391%Yes
2011364100%Yes
201233993%Yes
201329079%No
201424567%No
2015364100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
202132790%No
202234895%Yes
2023365100%Yes
202434995%Yes
202536399%Yes
202624467%No

Latest Records

20
Latest records at Ft Lewis
DateStationRecordValueBeat old record byOld record stoodSignificance
29 August 2026Ft Lewis, USdaily high min (Provisional)13.3 C (55.9 F)0.5 C (0.9 F)104 years41 of 100 (Notable)
23 August 2026Ft Lewis, USdaily high min (Tie, Provisional)13.9 C (57.0 F)tie0 years2 of 100 (Routine)
11 August 2026Ft Lewis, USdaily high max (Tie)31.1 C (88.0 F)tie104 years10 of 100 (Routine)
9 August 2026Ft Lewis, USdaily high max32.8 C (91.0 F)1.7 C (3.1 F)31 years25 of 100 (Routine)
8 August 2026Ft Lewis, USdaily high max32.8 C (91.0 F)1.7 C (3.1 F)65 years35 of 100 (Notable)
7 August 2026Ft Lewis, USdaily high max32.8 C (91.0 F)1.1 C (2.0 F)65 years32 of 100 (Routine)
6 August 2026Ft Lewis, USdaily high max32.8 C (91.0 F)1.1 C (2.0 F)31 years22 of 100 (Routine)
5 August 2026Ft Lewis, USdaily high max31.7 C (89.1 F)0.6 C (1.1 F)108 years42 of 100 (Notable)
4 August 2026Ft Lewis, USdaily high max32.2 C (90.0 F)0.5 C (0.9 F)61 years29 of 100 (Routine)
3 August 2026Ft Lewis, USdaily high max (Tie)32.2 C (90.0 F)tie25 years4 of 100 (Routine)
2 August 2026Ft Lewis, USmonthly high min (Tie)16.7 C (62.1 F)tie34 years7 of 100 (Routine)
2 August 2026Ft Lewis, USdaily high max (Tie)31.7 C (89.1 F)tie53 years6 of 100 (Routine)
31 July 2026Ft Lewis, USdaily high max (Tie)32.8 C (91.0 F)tie51 years6 of 100 (Routine)
28 July 2026Ft Lewis, USdaily high min (Tie)15.0 C (59.0 F)tie13 years3 of 100 (Routine)
27 July 2026Ft Lewis, USdaily high min (Tie)13.9 C (57.0 F)tie73 years8 of 100 (Routine)
27 July 2026Ft Lewis, USdaily high max (Tie)31.7 C (89.1 F)tie65 years7 of 100 (Routine)
26 July 2026Ft Lewis, USdaily high min15.6 C (60.1 F)0.6 C (1.1 F)96 years41 of 100 (Notable)
25 July 2026Ft Lewis, USdaily high min (Tie)14.4 C (57.9 F)tie20 years4 of 100 (Routine)
14 July 2026Ft Lewis, USdaily high min (Tie)14.4 C (57.9 F)tie12 years3 of 100 (Routine)
11 July 2026Ft Lewis, USdaily high max32.8 C (91.0 F)0.6 C (1.1 F)23 years18 of 100 (Routine)

Climate Trend

76 complete years, 1918 to 2023
Annual mean temperature at Ft Lewis as warming stripes, 1918 to 2023 One stripe for each of 76 complete years at Ft Lewis, 1918 to 2023. Blue stripes are years cooler than the station's own mean of 6.4 C (43.5 F); red stripes are warmer. The coolest year was 1973, at 4.9 C (40.9 F), and the warmest was 2015, at 8.0 C (46.5 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1918: 6.4 C, 0.0 C from the station mean1921: 7.7 C, +1.3 C from the station mean1922: 6.6 C, +0.2 C from the station mean1923: 5.9 C, -0.4 C from the station mean1924: 5.1 C, -1.3 C from the station mean1925: 6.0 C, -0.4 C from the station mean1927: 6.7 C, +0.3 C from the station mean1928: 6.2 C, -0.2 C from the station mean1930: 5.9 C, -0.5 C from the station mean1931: 6.5 C, +0.1 C from the station mean1932: 5.8 C, -0.6 C from the station mean1933: 5.2 C, -1.2 C from the station mean1934: 8.0 C, +1.6 C from the station mean1935: 6.2 C, -0.2 C from the station mean1936: 6.8 C, +0.5 C from the station mean1937: 6.1 C, -0.3 C from the station mean1938: 6.3 C, -0.1 C from the station mean1939: 6.7 C, +0.3 C from the station mean1949: 5.2 C, -1.2 C from the station mean1950: 6.4 C, 0.0 C from the station mean1951: 5.1 C, -1.3 C from the station mean1952: 5.3 C, -1.1 C from the station mean1953: 5.3 C, -1.1 C from the station mean1954: 6.5 C, +0.1 C from the station mean1955: 5.1 C, -1.3 C from the station mean1956: 6.2 C, -0.2 C from the station mean1958: 6.4 C, 0.0 C from the station mean1959: 6.2 C, -0.2 C from the station mean1960: 6.0 C, -0.4 C from the station mean1961: 5.9 C, -0.5 C from the station mean1962: 6.7 C, +0.3 C from the station mean1963: 6.8 C, +0.5 C from the station mean1964: 5.3 C, -1.1 C from the station mean1965: 5.8 C, -0.6 C from the station mean1966: 6.4 C, +0.1 C from the station mean1968: 5.6 C, -0.8 C from the station mean1969: 6.1 C, -0.3 C from the station mean1970: 5.8 C, -0.6 C from the station mean1973: 4.9 C, -1.5 C from the station mean1974: 6.0 C, -0.4 C from the station mean1975: 5.1 C, -1.3 C from the station mean1976: 6.3 C, -0.1 C from the station mean1977: 6.9 C, +0.5 C from the station mean1978: 6.1 C, -0.3 C from the station mean1979: 5.4 C, -1.0 C from the station mean1980: 6.6 C, +0.2 C from the station mean1983: 5.8 C, -0.6 C from the station mean1984: 6.0 C, -0.4 C from the station mean1985: 6.2 C, -0.2 C from the station mean1986: 6.8 C, +0.4 C from the station mean1987: 6.3 C, -0.1 C from the station mean1988: 6.5 C, +0.1 C from the station mean1989: 7.0 C, +0.6 C from the station mean1991: 5.9 C, -0.5 C from the station mean1992: 6.0 C, -0.4 C from the station mean1993: 6.0 C, -0.3 C from the station mean1994: 7.2 C, +0.8 C from the station mean1995: 7.4 C, +1.0 C from the station mean1996: 7.4 C, +1.0 C from the station mean1997: 6.9 C, +0.5 C from the station mean2000: 7.8 C, +1.4 C from the station mean2003: 7.5 C, +1.1 C from the station mean2004: 5.1 C, -1.2 C from the station mean2005: 7.0 C, +0.6 C from the station mean2006: 6.8 C, +0.4 C from the station mean2007: 7.1 C, +0.7 C from the station mean2008: 5.8 C, -0.6 C from the station mean2011: 6.9 C, +0.5 C from the station mean2012: 8.0 C, +1.6 C from the station mean2015: 8.0 C, +1.7 C from the station mean2016: 7.8 C, +1.4 C from the station mean2017: 8.0 C, +1.6 C from the station mean2018: 7.8 C, +1.4 C from the station mean2019: 6.5 C, +0.2 C from the station mean2020: 7.6 C, +1.2 C from the station mean2023: 6.8 C, +0.4 C from the station mean19181930194019501960197019801990200020102020
One stripe for each of 76 complete years at Ft Lewis, 1918 to 2023. Blue stripes are years cooler than the station's own mean of 6.4 C (43.5 F); red stripes are warmer. The coolest year was 1973, at 4.9 C (40.9 F), and the warmest was 2015, at 8.0 C (46.5 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Ft Lewis as warming stripes, 1918 to 2023
YearAnnual mean temperatureDifference from the station mean
19186.4 C+0.01 C
19217.7 C+1.33 C
19226.6 C+0.23 C
19235.9 C-0.44 C
19245.1 C-1.28 C
19256.0 C-0.39 C
19276.7 C+0.28 C
19286.2 C-0.16 C
19305.9 C-0.52 C
19316.5 C+0.09 C
19325.8 C-0.56 C
19335.2 C-1.17 C
19348.0 C+1.59 C
19356.2 C-0.18 C
19366.8 C+0.46 C
19376.1 C-0.32 C
19386.3 C-0.12 C
19396.7 C+0.35 C
19495.2 C-1.22 C
19506.4 C-0.03 C
19515.1 C-1.28 C
19525.3 C-1.06 C
19535.3 C-1.11 C
19546.5 C+0.12 C
19555.1 C-1.30 C
19566.2 C-0.19 C
19586.4 C-0.02 C
19596.2 C-0.17 C
19606.0 C-0.36 C
19615.9 C-0.53 C
19626.7 C+0.27 C
19636.8 C+0.46 C
19645.3 C-1.06 C
19655.8 C-0.61 C
19666.4 C+0.06 C
19685.6 C-0.78 C
19696.1 C-0.33 C
19705.8 C-0.59 C
19734.9 C-1.45 C
19746.0 C-0.40 C
19755.1 C-1.31 C
19766.3 C-0.05 C
19776.9 C+0.53 C
19786.1 C-0.27 C
19795.4 C-1.00 C
19806.6 C+0.22 C
19835.8 C-0.62 C
19846.0 C-0.38 C
19856.2 C-0.22 C
19866.8 C+0.43 C
19876.3 C-0.09 C
19886.5 C+0.13 C
19897.0 C+0.63 C
19915.9 C-0.45 C
19926.0 C-0.38 C
19936.0 C-0.34 C
19947.2 C+0.82 C
19957.4 C+1.00 C
19967.4 C+0.98 C
19976.9 C+0.47 C
20007.8 C+1.39 C
20037.5 C+1.14 C
20045.1 C-1.24 C
20057.0 C+0.63 C
20066.8 C+0.41 C
20077.1 C+0.69 C
20085.8 C-0.61 C
20116.9 C+0.48 C
20128.0 C+1.62 C
20158.0 C+1.66 C
20167.8 C+1.43 C
20178.0 C+1.64 C
20187.8 C+1.45 C
20196.5 C+0.16 C
20207.6 C+1.25 C
20236.8 C+0.38 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1918 to 2023. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 76 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ft Lewis
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (0.1 to 0.2) per decade0.2 F (0.1 to 0.3) per decade1918 to 202376Rise
Mean daily maximum0.06 C (0.00 to 0.12) per decade0.11 F (-0.01 to 0.22) per decade1918 to 202376Not clearly different from zero
Mean daily minimum0.2 C (0.1 to 0.2) per decade0.3 F (0.2 to 0.4) per decade1918 to 202376Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1915 to 2026
Yearly extremes at Ft Lewis: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)197331.7 C (89.1 F)103
Coldest night (TNn)-37.2 C (-35.0 F)1963-24.4 C (-11.9 F)103
Wettest day (Rx1day)63.5 mm (2.5 in)192432.3 mm (1.3 in)105
Wettest five days (Rx5day)116.1 mm (4.6 in)202553.5 mm (2.1 in)104
Longest dry spell (CDD)89 days197637 days105

Hottest day (TXx)

Hottest day (TXx) at Ft Lewis by year The hottest day of the year at Ft Lewis, 1915 to 2026. The record is 38.9 C (102.0 F) in 1973, marked on the chart; the median year is 31.7 C (89.1 F). 25303540192019401960198020002020Record: 38.9 C (102.0 F) in 1973
The hottest day of the year at Ft Lewis, 1915 to 2026. The record is 38.9 C (102.0 F) in 1973, marked on the chart; the median year is 31.7 C (89.1 F).
Hottest day (TXx) at Ft Lewis by year
YearHottest day (TXx)
1915n/a
1916n/a
191731.1 C (88.0 F)
191832.8 C (91.0 F)
191930.0 C (86.0 F)
192032.8 C (91.0 F)
192131.7 C (89.1 F)
192237.2 C (99.0 F)
192331.7 C (89.1 F)
192428.9 C (84.0 F)
192532.8 C (91.0 F)
192633.3 C (91.9 F)
192731.1 C (88.0 F)
192830.0 C (86.0 F)
192932.2 C (90.0 F)
193030.0 C (86.0 F)
193132.2 C (90.0 F)
193230.0 C (86.0 F)
193329.4 C (84.9 F)
193432.2 C (90.0 F)
193530.0 C (86.0 F)
193634.4 C (93.9 F)
193731.7 C (89.1 F)
193831.1 C (88.0 F)
193931.7 C (89.1 F)
194027.2 C (81.0 F)
194830.0 C (86.0 F)
194928.9 C (84.0 F)
195030.0 C (86.0 F)
195130.6 C (87.1 F)
195230.6 C (87.1 F)
195330.6 C (87.1 F)
195431.1 C (88.0 F)
195529.4 C (84.9 F)
195630.0 C (86.0 F)
195728.9 C (84.0 F)
195830.6 C (87.1 F)
195931.1 C (88.0 F)
196032.8 C (91.0 F)
196132.2 C (90.0 F)
196231.1 C (88.0 F)
196331.7 C (89.1 F)
196431.7 C (89.1 F)
196529.4 C (84.9 F)
196633.9 C (93.0 F)
196731.7 C (89.1 F)
196832.2 C (90.0 F)
196931.1 C (88.0 F)
197032.8 C (91.0 F)
197133.9 C (93.0 F)
197232.2 C (90.0 F)
197338.9 C (102.0 F)
197437.2 C (99.0 F)
197532.8 C (91.0 F)
197633.3 C (91.9 F)
197730.6 C (87.1 F)
197832.2 C (90.0 F)
197931.7 C (89.1 F)
198031.1 C (88.0 F)
198131.7 C (89.1 F)
198228.9 C (84.0 F)
198329.4 C (84.9 F)
198432.8 C (91.0 F)
198531.7 C (89.1 F)
198631.1 C (88.0 F)
198731.7 C (89.1 F)
198831.7 C (89.1 F)
198933.9 C (93.0 F)
199032.2 C (90.0 F)
199130.6 C (87.1 F)
199230.0 C (86.0 F)
199331.7 C (89.1 F)
199432.2 C (90.0 F)
199533.9 C (93.0 F)
199632.8 C (91.0 F)
199732.8 C (91.0 F)
199832.8 C (91.0 F)
199931.7 C (89.1 F)
200032.2 C (90.0 F)
200132.2 C (90.0 F)
200235.0 C (95.0 F)
200334.4 C (93.9 F)
200430.6 C (87.1 F)
200532.2 C (90.0 F)
200632.2 C (90.0 F)
200732.2 C (90.0 F)
200830.6 C (87.1 F)
200927.8 C (82.0 F)
201032.8 C (91.0 F)
201131.7 C (89.1 F)
201232.8 C (91.0 F)
201331.7 C (89.1 F)
201431.7 C (89.1 F)
201530.0 C (86.0 F)
201632.2 C (90.0 F)
201731.7 C (89.1 F)
201831.7 C (89.1 F)
201930.0 C (86.0 F)
202032.2 C (90.0 F)
202133.3 C (91.9 F)
202232.2 C (90.0 F)
202333.9 C (93.0 F)
202431.1 C (88.0 F)
202531.7 C (89.1 F)
202632.8 C (91.0 F)

Coldest night (TNn)

Coldest night (TNn) at Ft Lewis by year The coldest night of the year at Ft Lewis, 1915 to 2026. The record is -37.2 C (-35.0 F) in 1963, marked on the chart; the median year is -24.4 C (-11.9 F). -40-20020192019401960198020002020Record: -37.2 C (-35.0 F) in 1963
The coldest night of the year at Ft Lewis, 1915 to 2026. The record is -37.2 C (-35.0 F) in 1963, marked on the chart; the median year is -24.4 C (-11.9 F).
Coldest night (TNn) at Ft Lewis by year
YearColdest night (TNn)
1915n/a
1916n/a
1917-18.9 C (-2.0 F)
1918-23.9 C (-11.0 F)
1919-30.0 C (-22.0 F)
1920-16.7 C (1.9 F)
1921-20.6 C (-5.1 F)
1922-26.7 C (-16.1 F)
1923-25.6 C (-14.1 F)
1924-30.0 C (-22.0 F)
1925-27.8 C (-18.0 F)
1926-25.0 C (-13.0 F)
1927-28.3 C (-18.9 F)
1928-24.4 C (-11.9 F)
1929-23.9 C (-11.0 F)
1930-27.8 C (-18.0 F)
1931-28.9 C (-20.0 F)
1932-30.0 C (-22.0 F)
1933-35.6 C (-32.1 F)
1934-18.9 C (-2.0 F)
1935-28.3 C (-18.9 F)
1936-22.8 C (-9.0 F)
1937-29.4 C (-20.9 F)
1938-20.6 C (-5.1 F)
1939-27.8 C (-18.0 F)
19406.7 C (44.1 F)
1948-22.8 C (-9.0 F)
1949-28.9 C (-20.0 F)
1950-26.1 C (-15.0 F)
1951-31.7 C (-25.1 F)
1952-26.1 C (-15.0 F)
1953-25.0 C (-13.0 F)
1954-21.1 C (-6.0 F)
1955-28.9 C (-20.0 F)
1956-25.0 C (-13.0 F)
1957-21.1 C (-6.0 F)
1958-21.7 C (-7.1 F)
1959-22.8 C (-9.0 F)
1960-28.9 C (-20.0 F)
1961-27.8 C (-18.0 F)
1962-27.2 C (-17.0 F)
1963-37.2 C (-35.0 F)
1964-22.8 C (-9.0 F)
1965-26.7 C (-16.1 F)
1966-26.1 C (-15.0 F)
1967-25.6 C (-14.1 F)
1968-27.8 C (-18.0 F)
1969-23.9 C (-11.0 F)
1970-21.7 C (-7.1 F)
1971-32.2 C (-26.0 F)
1972-23.3 C (-9.9 F)
1973-23.9 C (-11.0 F)
1974-24.4 C (-11.9 F)
1975-29.4 C (-20.9 F)
1976-26.7 C (-16.1 F)
1977-24.4 C (-11.9 F)
1978-28.3 C (-18.9 F)
1979-31.7 C (-25.1 F)
1980-18.3 C (-0.9 F)
1981-20.0 C (-4.0 F)
1982-26.7 C (-16.1 F)
1983-23.3 C (-9.9 F)
1984-31.7 C (-25.1 F)
1985-30.0 C (-22.0 F)
1986-22.8 C (-9.0 F)
1987-23.3 C (-9.9 F)
1988-27.2 C (-17.0 F)
1989-28.3 C (-18.9 F)
1990-31.1 C (-24.0 F)
1991-22.2 C (-8.0 F)
1992-22.2 C (-8.0 F)
1993-21.1 C (-6.0 F)
1994-24.4 C (-11.9 F)
1995-20.6 C (-5.1 F)
1996-24.4 C (-11.9 F)
1997-24.4 C (-11.9 F)
1998-23.3 C (-9.9 F)
1999-19.4 C (-2.9 F)
2000-23.9 C (-11.0 F)
2001-21.7 C (-7.1 F)
2002-23.9 C (-11.0 F)
2003-24.4 C (-11.9 F)
2004-27.8 C (-18.0 F)
2005-20.6 C (-5.1 F)
2006-21.1 C (-6.0 F)
2007-25.0 C (-13.0 F)
2008-27.8 C (-18.0 F)
2009-23.3 C (-9.9 F)
2010-21.7 C (-7.1 F)
2011-28.9 C (-20.0 F)
2012-24.4 C (-11.9 F)
2013-30.6 C (-23.1 F)
2014-18.9 C (-2.0 F)
2015-20.6 C (-5.1 F)
2016-20.6 C (-5.1 F)
2017-19.4 C (-2.9 F)
2018-21.1 C (-6.0 F)
2019-22.2 C (-8.0 F)
2020-20.0 C (-4.0 F)
2021-23.3 C (-9.9 F)
2022-22.2 C (-8.0 F)
2023-22.2 C (-8.0 F)
2024-21.7 C (-7.1 F)
2025-21.1 C (-6.0 F)
2026-20.6 C (-5.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Ft Lewis by year The wettest day of the year at Ft Lewis, 1915 to 2026. The record is 63.5 mm (2.5 in) in 1924, marked on the chart; the median year is 32.3 mm (1.3 in). 020406080192019401960198020002020Record: 63.5 mm (2.5 in) in 1924
The wettest day of the year at Ft Lewis, 1915 to 2026. The record is 63.5 mm (2.5 in) in 1924, marked on the chart; the median year is 32.3 mm (1.3 in).
Wettest day (Rx1day) at Ft Lewis by year
YearWettest day (Rx1day)
191544.2 mm (1.7 in)
191634.3 mm (1.4 in)
191725.4 mm (1.0 in)
191833.8 mm (1.3 in)
191935.6 mm (1.4 in)
192029.0 mm (1.1 in)
192122.9 mm (0.9 in)
192222.9 mm (0.9 in)
192327.9 mm (1.1 in)
192463.5 mm (2.5 in)
192532.0 mm (1.3 in)
192621.6 mm (0.9 in)
192743.2 mm (1.7 in)
192848.5 mm (1.9 in)
192942.9 mm (1.7 in)
193026.2 mm (1.0 in)
193151.3 mm (2.0 in)
193231.5 mm (1.2 in)
193315.5 mm (0.6 in)
193431.0 mm (1.2 in)
193526.2 mm (1.0 in)
193654.1 mm (2.1 in)
193735.3 mm (1.4 in)
193826.9 mm (1.1 in)
193924.9 mm (1.0 in)
19400.0 mm (0.00 in)
194833.5 mm (1.3 in)
194956.6 mm (2.2 in)
195032.5 mm (1.3 in)
195138.1 mm (1.5 in)
195231.8 mm (1.3 in)
195338.1 mm (1.5 in)
195429.5 mm (1.2 in)
195528.2 mm (1.1 in)
195617.5 mm (0.7 in)
195740.1 mm (1.6 in)
195823.6 mm (0.9 in)
195952.1 mm (2.1 in)
196021.6 mm (0.9 in)
196134.0 mm (1.3 in)
196224.6 mm (1.0 in)
196332.3 mm (1.3 in)
196420.1 mm (0.8 in)
196530.2 mm (1.2 in)
196662.2 mm (2.4 in)
196732.3 mm (1.3 in)
196826.4 mm (1.0 in)
196939.1 mm (1.5 in)
197035.8 mm (1.4 in)
197126.4 mm (1.0 in)
197253.3 mm (2.1 in)
197317.0 mm (0.7 in)
197433.5 mm (1.3 in)
197516.5 mm (0.6 in)
197627.9 mm (1.1 in)
197736.3 mm (1.4 in)
197839.9 mm (1.6 in)
197931.0 mm (1.2 in)
198042.4 mm (1.7 in)
198141.9 mm (1.6 in)
198225.4 mm (1.0 in)
198331.2 mm (1.2 in)
198420.1 mm (0.8 in)
198522.4 mm (0.9 in)
198641.7 mm (1.6 in)
198728.4 mm (1.1 in)
198823.6 mm (0.9 in)
198932.5 mm (1.3 in)
199039.4 mm (1.6 in)
199142.7 mm (1.7 in)
199243.4 mm (1.7 in)
199335.1 mm (1.4 in)
199442.2 mm (1.7 in)
199533.5 mm (1.3 in)
199642.2 mm (1.7 in)
199758.4 mm (2.3 in)
199841.4 mm (1.6 in)
199953.1 mm (2.1 in)
200030.0 mm (1.2 in)
200125.4 mm (1.0 in)
200225.4 mm (1.0 in)
200349.8 mm (2.0 in)
200456.9 mm (2.2 in)
200550.8 mm (2.0 in)
200621.6 mm (0.9 in)
200734.3 mm (1.4 in)
200836.8 mm (1.4 in)
200933.0 mm (1.3 in)
201038.1 mm (1.5 in)
201129.2 mm (1.1 in)
201216.5 mm (0.6 in)
201330.5 mm (1.2 in)
201431.0 mm (1.2 in)
201519.1 mm (0.8 in)
201647.5 mm (1.9 in)
201716.0 mm (0.6 in)
201813.5 mm (0.5 in)
201923.1 mm (0.9 in)
202022.9 mm (0.9 in)
202126.2 mm (1.0 in)
202241.1 mm (1.6 in)
202333.0 mm (1.3 in)
202428.7 mm (1.1 in)
202532.8 mm (1.3 in)
202631.8 mm (1.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ft Lewis by year The wettest five days of the year at Ft Lewis, 1915 to 2026. The record is 116.1 mm (4.6 in) in 2025, marked on the chart; the median year is 53.5 mm (2.1 in). 255075100125192019401960198020002020Record: 116.1 mm (4.6 in) in 2025
The wettest five days of the year at Ft Lewis, 1915 to 2026. The record is 116.1 mm (4.6 in) in 2025, marked on the chart; the median year is 53.5 mm (2.1 in).
Wettest five days (Rx5day) at Ft Lewis by year
YearWettest five days (Rx5day)
191554.6 mm (2.1 in)
191693.0 mm (3.7 in)
191740.6 mm (1.6 in)
191852.4 mm (2.1 in)
191961.0 mm (2.4 in)
192046.6 mm (1.8 in)
192136.9 mm (1.5 in)
192240.5 mm (1.6 in)
192362.9 mm (2.5 in)
192493.9 mm (3.7 in)
192546.9 mm (1.8 in)
192639.1 mm (1.5 in)
192793.7 mm (3.7 in)
192850.5 mm (2.0 in)
192972.1 mm (2.8 in)
193060.7 mm (2.4 in)
193172.4 mm (2.9 in)
193262.2 mm (2.4 in)
193339.2 mm (1.5 in)
193431.7 mm (1.2 in)
193556.8 mm (2.2 in)
1936101.6 mm (4.0 in)
193760.0 mm (2.4 in)
193848.6 mm (1.9 in)
193971.1 mm (2.8 in)
1940n/a
194856.1 mm (2.2 in)
194965.5 mm (2.6 in)
195048.0 mm (1.9 in)
195155.9 mm (2.2 in)
195252.1 mm (2.1 in)
195355.9 mm (2.2 in)
195446.0 mm (1.8 in)
195540.9 mm (1.6 in)
195651.0 mm (2.0 in)
195751.3 mm (2.0 in)
195837.6 mm (1.5 in)
195982.5 mm (3.2 in)
196067.3 mm (2.6 in)
196140.7 mm (1.6 in)
196274.6 mm (2.9 in)
196348.3 mm (1.9 in)
196438.7 mm (1.5 in)
196553.1 mm (2.1 in)
1966109.9 mm (4.3 in)
196742.8 mm (1.7 in)
196840.7 mm (1.6 in)
196961.8 mm (2.4 in)
197079.5 mm (3.1 in)
197154.1 mm (2.1 in)
1972109.7 mm (4.3 in)
197325.5 mm (1.0 in)
197467.3 mm (2.6 in)
197543.3 mm (1.7 in)
197648.5 mm (1.9 in)
197751.7 mm (2.0 in)
197865.6 mm (2.6 in)
197953.9 mm (2.1 in)
198065.5 mm (2.6 in)
198182.6 mm (3.3 in)
198256.4 mm (2.2 in)
198356.0 mm (2.2 in)
198445.5 mm (1.8 in)
198545.4 mm (1.8 in)
198671.4 mm (2.8 in)
198749.0 mm (1.9 in)
198832.0 mm (1.3 in)
198940.6 mm (1.6 in)
199043.4 mm (1.7 in)
199177.6 mm (3.1 in)
199264.2 mm (2.5 in)
199383.3 mm (3.3 in)
199449.4 mm (1.9 in)
199573.6 mm (2.9 in)
199654.1 mm (2.1 in)
199777.2 mm (3.0 in)
199864.2 mm (2.5 in)
199985.6 mm (3.4 in)
200038.9 mm (1.5 in)
200151.7 mm (2.0 in)
200247.0 mm (1.9 in)
200363.8 mm (2.5 in)
200482.8 mm (3.3 in)
200571.8 mm (2.8 in)
200646.7 mm (1.8 in)
200754.9 mm (2.2 in)
200860.2 mm (2.4 in)
200935.5 mm (1.4 in)
201061.7 mm (2.4 in)
201141.6 mm (1.6 in)
201229.7 mm (1.2 in)
201342.7 mm (1.7 in)
201446.7 mm (1.8 in)
201536.9 mm (1.5 in)
201667.6 mm (2.7 in)
201729.9 mm (1.2 in)
201832.3 mm (1.3 in)
201944.4 mm (1.7 in)
202052.7 mm (2.1 in)
202138.2 mm (1.5 in)
202287.3 mm (3.4 in)
202350.2 mm (2.0 in)
202472.9 mm (2.9 in)
2025116.1 mm (4.6 in)
202631.8 mm (1.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ft Lewis by year The longest dry spell of the year at Ft Lewis, 1915 to 2026. The record is 89 days in 1976, marked on the chart; the median year is 37 days. 0255075100192019401960198020002020Record: 89 days in 1976
The longest dry spell of the year at Ft Lewis, 1915 to 2026. The record is 89 days in 1976, marked on the chart; the median year is 37 days.
Longest dry spell (CDD) at Ft Lewis by year
YearLongest dry spell (CDD)
191541 days
191648 days
191765 days
191839 days
191937 days
192025 days
192131 days
192235 days
192324 days
192442 days
192551 days
192629 days
192733 days
192861 days
192940 days
193039 days
193130 days
193239 days
193327 days
193437 days
193552 days
193632 days
193726 days
193834 days
193949 days
19401 day
194832 days
194927 days
195029 days
195128 days
195233 days
195343 days
195433 days
195554 days
195629 days
195741 days
195830 days
195935 days
196034 days
196138 days
196224 days
196338 days
196449 days
196527 days
196647 days
196755 days
196826 days
196925 days
197037 days
197153 days
197282 days
197339 days
197478 days
197540 days
197689 days
197754 days
197824 days
197927 days
198053 days
198127 days
198237 days
198336 days
198426 days
198526 days
198636 days
198734 days
198832 days
198946 days
199022 days
199141 days
199234 days
199338 days
199426 days
199532 days
199661 days
199734 days
199840 days
199958 days
200028 days
200136 days
200245 days
200342 days
200460 days
200531 days
200642 days
200750 days
200846 days
200922 days
201034 days
201137 days
201265 days
201349 days
201433 days
201547 days
201642 days
201761 days
201827 days
201934 days
202047 days
202123 days
202254 days
202347 days
202429 days
202540 days
202639 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

76 years with a frost

Across 76 years with a frost, the median last spring frost at Ft Lewis falls on 10 June and the median first autumn frost on 19 September, which leaves a median of 102 days between them.

In 1983 to 2023 the median growing season was 105 days. That is 2 days more than in 1918 to 1961.

Fitted over all years, the growing season changes by +0.6 days per decade at this station.

Frost dates and growing season at Ft Lewis
MeasureMedian, all yearsEarliest period (1918 to 1961)Recent period (1983 to 2023)Recent against earliestFitted trend
Last spring frost10 June11 June9 June2 days earlier-0.6 days per decade
First autumn frost19 September20 September20 Septemberno change-0.1 days per decade
Growing days102 days103 days105 days2 days more+0.6 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

93 years, 1916 to 2025

A day with at least 32.2 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 68.0 mm (2.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Ft Lewis: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years32.2 mm (1.3 in)
5 years42.6 mm (1.7 in)
10 years49.1 mm (1.9 in)
25 years57.0 mm (2.2 in)
50 years62.6 mm (2.5 in)
100 years68.0 mm (2.7 in)Longer than the 93 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 93 years of values from 1916 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 63.5 mm (2.5 in) in 1924; 62.2 mm (2.4 in) in 1966; 58.4 mm (2.3 in) in 1997.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2003 to 2023 against 1961 to 1990

Over 2003 to 2023, Ft Lewis had a mean temperature of 7.1 C (44.8 F) and 357.7 mm (14.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Norwood (United States, 102 km away), Panguitch (United States, 392 km away) and Coalville (United States, 501 km away).

Climate twins of Ft Lewis: stations whose 1961 to 1990 climate is closest to its 2003 to 2023 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
NorwoodUnited States102 km (63 mi)6.8 C (44.3 F)380.6 mm (15.0 in)0.54
PanguitchUnited States392 km (244 mi)6.8 C (44.3 F)260.8 mm (10.3 in)0.61
CoalvilleUnited States501 km (311 mi)7.1 C (44.7 F)430.0 mm (16.9 in)0.62

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Ft Lewis standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Ft Lewis threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-13).