Built 2026-10-15 (15 October 2026)

Ft Sumner Weather Records (USC00293294)

Record envelope, standing records and threshold days for Ft Sumner (USC00293294), New Mexico, United States, with 103 years of record.

Key Facts for Ft Sumner

  • Ft Sumner (USC00293294) is a weather station in New Mexico, United States at 34.47 latitude and -104.23 longitude, 1,227 m (4,025 ft) above sea level.
  • The station reports from 1909 to 2011, 103 years of record.
  • 1,464 records set at Ft Sumner still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Ft Sumner set a daily record precipitation of 18.0 mm (0.7 in) on 4 September 2011.

About the Station

  • Location: New Mexico, United States, 34.47 latitude, -104.23 longitude.
  • Elevation: 1,227 m (4,025 ft).
  • Period of record: 1909 to 2011, 103 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Ft Sumner, with 2026 drawn through them The band shows the record high and record low for each calendar day at Ft Sumner. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Ft Sumner. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Ft Sumner, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan26.7 C (80.1 F)-32.8 C (-27.0 F)n/an/a
Feb28.9 C (84.0 F)-26.7 C (-16.1 F)n/an/a
Mar33.3 C (91.9 F)-16.7 C (1.9 F)n/an/a
Apr36.7 C (98.1 F)-10.0 C (14.0 F)n/an/a
May38.9 C (102.0 F)-2.8 C (27.0 F)n/an/a
Jun42.8 C (109.0 F)4.4 C (39.9 F)n/an/a
Jul42.8 C (109.0 F)10.0 C (50.0 F)n/an/a
Aug41.1 C (106.0 F)8.9 C (48.0 F)n/an/a
Sep39.4 C (102.9 F)0.0 C (32.0 F)n/an/a
Oct35.0 C (95.0 F)-11.1 C (12.0 F)n/an/a
Nov31.7 C (89.1 F)-17.8 C (0.0 F)n/an/a
Dec27.8 C (82.0 F)-27.8 C (-18.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Ft Sumner by the year they were set 1,464 records at Ft Sumner still stand. 1911 holds the most, with 37. 0102030401909: 51910: 151911: 371912: 61913: 311914: 181915: 271916: 291917: 171918: 231919: 161920: 81921: 221922: 181923: 91924: 161925: 171926: 91927: 171928: 121929: 171930: 111931: 31932: 121933: 151934: 261935: 151936: 161937: 131938: 151939: 151940: 131941: 31942: 131943: 151944: 61948: 221949: 171950: 201951: 241952: 241953: 191954: 241955: 151956: 141957: 171958: 91959: 151960: 121961: 81962: 171963: 161964: 131965: 121966: 161967: 221968: 91969: 91970: 101971: 161972: 101974: 81975: 101976: 151977: 51978: 161979: 141980: 111981: 201982: 81983: 201984: 141985: 111986: 161987: 211988: 81989: 221990: 171991: 241992: 91993: 31994: 61995: 141996: 141997: 181998: 71999: 72000: 182001: 42002: 92003: 92004: 152005: 142006: 162007: 122008: 312009: 112010: 162011: 211909191919291939195219621972198319932003
1,464 records at Ft Sumner still stand. 1911 holds the most, with 37.
Standing records at Ft Sumner by the year they were set
Year setStanding records
19095
191015
191137
19126
191331
191418
191527
191629
191717
191823
191916
19208
192122
192218
19239
192416
192517
19269
192717
192812
192917
193011
19313
193212
193315
193426
193515
193616
193713
193815
193915
194013
19413
194213
194315
19446
194822
194917
195020
195124
195224
195319
195424
195515
195614
195717
19589
195915
196012
19618
196217
196316
196413
196512
196616
196722
19689
19699
197010
197116
197210
19748
197510
197615
19775
197816
197914
198011
198120
19828
198320
198414
198511
198616
198721
19888
198922
199017
199124
19929
19933
19946
199514
199614
199718
19987
19997
200018
20014
20029
20039
200415
200514
200616
200712
200831
200911
201016
201121

All-Time Record Progression

10 new records
When Ft Sumner set new all-time records 10 all-time records were set at Ft Sumner between 22 September 1941 and 20 June 2008. Each dot is a new record. Record daily precipitationRecord low minimum temperatureRecord low maximum temperatureRecord snow depthRecord high minimum temperature22 September 1941: Record daily precipitation 93.7 mm (3.7 in)1 February 1951: Record low minimum temperature -26.7 C (-16.1 F)6 October 1954: Record daily precipitation 114.6 mm (4.5 in)10 January 1962: Record low maximum temperature -11.7 C (10.9 F)12 January 1963: Record low maximum temperature -13.3 C (8.1 F)12 January 1963: Record low minimum temperature -27.8 C (-18.0 F)13 January 1963: Record low minimum temperature -32.8 C (-27.0 F)15 September 1970: Record daily precipitation 179.6 mm (7.1 in)18 January 1987: Record snow depth 40.6 cm (16.0 in)20 June 2008: Record high minimum temperature 28.9 C (84.0 F)195019601970198019902000
10 all-time records were set at Ft Sumner between 22 September 1941 and 20 June 2008. Each dot is a new record.
When Ft Sumner set new all-time records
DateKindDetail
1941-09-22Record daily precipitationRecord daily precipitation 93.7 mm (3.7 in)
1951-02-01Record low minimum temperatureRecord low minimum temperature -26.7 C (-16.1 F)
1954-10-06Record daily precipitationRecord daily precipitation 114.6 mm (4.5 in)
1962-01-10Record low maximum temperatureRecord low maximum temperature -11.7 C (10.9 F)
1963-01-12Record low maximum temperatureRecord low maximum temperature -13.3 C (8.1 F)
1963-01-12Record low minimum temperatureRecord low minimum temperature -27.8 C (-18.0 F)
1963-01-13Record low minimum temperatureRecord low minimum temperature -32.8 C (-27.0 F)
1970-09-15Record daily precipitationRecord daily precipitation 179.6 mm (7.1 in)
1987-01-18Record snow depthRecord snow depth 40.6 cm (16.0 in)
2008-06-20Record high minimum temperatureRecord high minimum temperature 28.9 C (84.0 F)

Wettest Day of Each Month

Sep: 179.6 mm (7.1 in)
Record daily precipitation for each month at Ft Sumner The wettest day on record for each calendar month at Ft Sumner. The most was 179.6 mm (7.1 in) on 15 September 1970. 050100150200 Jan: 24.4 mm (1.0 in), 20 January 1918 Jan Feb: 35.6 mm (1.4 in), 22 February 1923 Feb Mar: 58.2 mm (2.3 in), 21 March 1919 Mar Apr: 100.3 mm (3.9 in), 29 April 1999 Apr May: 77.5 mm (3.1 in), 28 May 1937 May Jun: 89.9 mm (3.5 in), 28 June 1978 Jun Jul: 80.0 mm (3.1 in), 14 July 1991 Jul Aug: 104.1 mm (4.1 in), 23 August 1986 Aug Sep: 179.6 mm (7.1 in), 15 September 1970 Sep Oct: 114.6 mm (4.5 in), 6 October 1954 Oct Nov: 41.4 mm (1.6 in), 16 November 1964 Nov Dec: 63.0 mm (2.5 in), 11 December 1923 Dec
The wettest day on record for each calendar month at Ft Sumner. The most was 179.6 mm (7.1 in) on 15 September 1970.
Record daily precipitation for each month at Ft Sumner
MonthRecord daily precipitation (mm)Date
Jan24.4 mm (1.0 in)20 January 1918
Feb35.6 mm (1.4 in)22 February 1923
Mar58.2 mm (2.3 in)21 March 1919
Apr100.3 mm (3.9 in)29 April 1999
May77.5 mm (3.1 in)28 May 1937
Jun89.9 mm (3.5 in)28 June 1978
Jul80.0 mm (3.1 in)14 July 1991
Aug104.1 mm (4.1 in)23 August 1986
Sep179.6 mm (7.1 in)15 September 1970
Oct114.6 mm (4.5 in)6 October 1954
Nov41.4 mm (1.6 in)16 November 1964
Dec63.0 mm (2.5 in)11 December 1923

Period of Record Coverage

1909 to 2011
Days with data per year at Ft Sumner 101 years of record at Ft Sumner, 1909 to 2011. 15 years have data for under 90 percent of days and are left out of rankings: 1909, 1910, 1911, 1912, 1921, 1930, 1944, 1947 and others. 1909: 124 of 365 days1910: 314 of 365 days1911: 258 of 365 days1912: 159 of 366 days1913: 365 of 365 days1914: 363 of 365 days1915: 364 of 365 days1916: 365 of 366 days1917: 346 of 365 days1918: 364 of 365 days1919: 364 of 365 days1920: 366 of 366 days1921: 268 of 365 days1922: 365 of 365 days1923: 350 of 365 days1924: 363 of 366 days1925: 334 of 365 days1926: 349 of 365 days1927: 353 of 365 days1928: 363 of 366 days1929: 347 of 365 days1930: 326 of 365 days1931: 351 of 365 days1932: 333 of 366 days1933: 334 of 365 days1934: 365 of 365 days1935: 363 of 365 days1936: 365 of 366 days1937: 332 of 365 days1938: 360 of 365 days1939: 359 of 365 days1940: 357 of 366 days1941: 360 of 365 days1942: 360 of 365 days1943: 358 of 365 days1944: 210 of 366 days1947: 61 of 365 days1948: 355 of 366 days1949: 347 of 365 days1950: 358 of 365 days1951: 357 of 365 days1952: 365 of 366 days1953: 360 of 365 days1954: 361 of 365 days1955: 363 of 365 days1956: 363 of 366 days1957: 360 of 365 days1958: 363 of 365 days1959: 348 of 365 days1960: 357 of 366 days1961: 364 of 365 days1962: 365 of 365 days1963: 358 of 365 days1964: 360 of 366 days1965: 362 of 365 days1966: 362 of 365 days1967: 355 of 365 days1968: 365 of 366 days1969: 325 of 365 days1970: 266 of 365 days1971: 337 of 365 days1972: 352 of 366 days1973: 86 of 365 days1974: 291 of 365 days1975: 347 of 365 days1976: 240 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 364 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 363 of 365 days1983: 363 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 364 of 365 days1987: 365 of 365 days1988: 365 of 366 days1989: 364 of 365 days1990: 365 of 365 days1991: 364 of 365 days1992: 366 of 366 days1993: 364 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 350 of 366 days1997: 362 of 365 days1998: 364 of 365 days1999: 365 of 365 days2000: 340 of 366 days2001: 360 of 365 days2002: 309 of 365 days2003: 356 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 347 of 365 days2007: 364 of 365 days2008: 363 of 366 days2009: 362 of 365 days2010: 354 of 365 days2011: 257 of 365 days1920193519501965198019952010
101 years of record at Ft Sumner, 1909 to 2011. 15 years have data for under 90 percent of days and are left out of rankings: 1909, 1910, 1911, 1912, 1921, 1930, 1944, 1947 and others.
Days with data per year at Ft Sumner
YearDays with dataShare of yearComplete
190912434%No
191031486%No
191125871%No
191215943%No
1913365100%Yes
191436399%Yes
1915364100%Yes
1916365100%Yes
191734695%Yes
1918364100%Yes
1919364100%Yes
1920366100%Yes
192126873%No
1922365100%Yes
192335096%Yes
192436399%Yes
192533492%Yes
192634996%Yes
192735397%Yes
192836399%Yes
192934795%Yes
193032689%No
193135196%Yes
193233391%Yes
193333492%Yes
1934365100%Yes
193536399%Yes
1936365100%Yes
193733291%Yes
193836099%Yes
193935998%Yes
194035798%Yes
194136099%Yes
194236099%Yes
194335898%Yes
194421057%No
19476117%No
194835597%Yes
194934795%Yes
195035898%Yes
195135798%Yes
1952365100%Yes
195336099%Yes
195436199%Yes
195536399%Yes
195636399%Yes
195736099%Yes
195836399%Yes
195934895%Yes
196035798%Yes
1961364100%Yes
1962365100%Yes
196335898%Yes
196436098%Yes
196536299%Yes
196636299%Yes
196735597%Yes
1968365100%Yes
196932589%No
197026673%No
197133792%Yes
197235296%Yes
19738624%No
197429180%No
197534795%Yes
197624066%No
1977365100%Yes
1978365100%Yes
1979364100%Yes
1980366100%Yes
1981365100%Yes
198236399%Yes
198336399%Yes
1984366100%Yes
1985365100%Yes
1986364100%Yes
1987365100%Yes
1988365100%Yes
1989364100%Yes
1990365100%Yes
1991364100%Yes
1992366100%Yes
1993364100%Yes
1994365100%Yes
1995365100%Yes
199635096%Yes
199736299%Yes
1998364100%Yes
1999365100%Yes
200034093%Yes
200136099%Yes
200230985%No
200335698%Yes
2004366100%Yes
2005365100%Yes
200634795%Yes
2007364100%Yes
200836399%Yes
200936299%Yes
201035497%Yes
201125770%No

Latest Records

20
Latest records at Ft Sumner
DateStationRecordValueBeat old record byOld record stoodSignificance
4 September 2011Ft Sumner, USdaily rain18.0 mm (0.7 in)1.5 mm (0.06 in)4 years12 of 100 (Routine)
1 September 2011Ft Sumner, USdaily high min (Tie)20.0 C (68.0 F)tie92 years9 of 100 (Routine)
30 August 2011Ft Sumner, USdaily high min21.7 C (71.1 F)1.1 C (2.0 F)58 years32 of 100 (Routine)
29 August 2011Ft Sumner, USdaily high min22.2 C (72.0 F)1.1 C (2.0 F)4 years16 of 100 (Routine)
26 August 2011Ft Sumner, USdaily high min (Tie)20.0 C (68.0 F)tie58 years6 of 100 (Routine)
22 August 2011Ft Sumner, USdaily high min (Tie)20.0 C (68.0 F)tie50 years6 of 100 (Routine)
17 August 2011Ft Sumner, USdaily high min21.7 C (71.1 F)1.1 C (2.0 F)41 years27 of 100 (Routine)
13 August 2011Ft Sumner, USdaily high min (Tie)21.1 C (70.0 F)tie56 years6 of 100 (Routine)
12 August 2011Ft Sumner, USdaily high min22.8 C (73.0 F)1.7 C (3.1 F)96 years46 of 100 (Notable)
10 August 2011Ft Sumner, USdaily high min21.7 C (71.1 F)0.6 C (1.1 F)4 years13 of 100 (Routine)
6 August 2011Ft Sumner, USdaily high min (Tie)21.1 C (70.0 F)tie56 years6 of 100 (Routine)
23 July 2011Ft Sumner, USdaily high min (Tie)21.7 C (71.1 F)tie2 years2 of 100 (Routine)
21 July 2011Ft Sumner, USdaily high min (Tie)23.3 C (73.9 F)tie2 years2 of 100 (Routine)
2 July 2011Ft Sumner, USdaily high min21.7 C (71.1 F)0.6 C (1.1 F)77 years35 of 100 (Notable)
27 June 2011Ft Sumner, USdaily high min22.8 C (73.0 F)0.6 C (1.1 F)57 years29 of 100 (Routine)
17 June 2011Ft Sumner, USdaily high min21.7 C (71.1 F)0.6 C (1.1 F)76 years35 of 100 (Notable)
4 June 2011Ft Sumner, USdaily high min (Tie)18.3 C (64.9 F)tie77 years8 of 100 (Routine)
2 June 2011Ft Sumner, USdaily high min19.4 C (66.9 F)0.5 C (0.9 F)9 years13 of 100 (Routine)
1 June 2011Ft Sumner, USdaily high min20.0 C (68.0 F)1.1 C (2.0 F)82 years37 of 100 (Notable)
2 May 2011Ft Sumner, USdaily low max10.0 C (50.0 F)3.9 C (7.0 F)17 years23 of 100 (Routine)

Climate Trend

74 complete years, 1913 to 2009
Annual mean temperature at Ft Sumner as warming stripes, 1913 to 2009 One stripe for each of 74 complete years at Ft Sumner, 1913 to 2009. Blue stripes are years cooler than the station's own mean of 14.4 C (58.0 F); red stripes are warmer. The coolest year was 1913, at 12.9 C (55.2 F), and the warmest was 1954, at 17.5 C (63.4 F). The strongest colour marks a difference of 3.1 C (5.6 F). 1913: 12.9 C, -1.5 C from the station mean1914: 14.0 C, -0.5 C from the station mean1915: 13.4 C, -1.0 C from the station mean1916: 14.4 C, 0.0 C from the station mean1918: 14.0 C, -0.4 C from the station mean1919: 13.8 C, -0.6 C from the station mean1920: 13.7 C, -0.7 C from the station mean1922: 14.8 C, +0.4 C from the station mean1924: 13.7 C, -0.8 C from the station mean1927: 15.4 C, +0.9 C from the station mean1928: 14.3 C, -0.1 C from the station mean1931: 15.0 C, +0.5 C from the station mean1934: 16.4 C, +2.0 C from the station mean1935: 15.2 C, +0.7 C from the station mean1936: 14.7 C, +0.2 C from the station mean1938: 14.9 C, +0.4 C from the station mean1939: 14.8 C, +0.4 C from the station mean1940: 14.8 C, +0.4 C from the station mean1941: 14.2 C, -0.2 C from the station mean1942: 14.2 C, -0.3 C from the station mean1943: 15.0 C, +0.6 C from the station mean1948: 14.8 C, +0.4 C from the station mean1949: 14.5 C, 0.0 C from the station mean1950: 15.6 C, +1.1 C from the station mean1951: 15.5 C, +1.1 C from the station mean1952: 15.2 C, +0.8 C from the station mean1954: 17.5 C, +3.0 C from the station mean1955: 15.1 C, +0.7 C from the station mean1956: 15.0 C, +0.6 C from the station mean1957: 15.0 C, +0.6 C from the station mean1958: 14.7 C, +0.3 C from the station mean1959: 14.2 C, -0.2 C from the station mean1960: 13.6 C, -0.8 C from the station mean1961: 13.6 C, -0.8 C from the station mean1962: 14.3 C, -0.1 C from the station mean1963: 14.3 C, -0.1 C from the station mean1964: 14.1 C, -0.4 C from the station mean1965: 14.4 C, 0.0 C from the station mean1966: 13.9 C, -0.6 C from the station mean1967: 14.5 C, +0.1 C from the station mean1968: 13.9 C, -0.5 C from the station mean1971: 14.1 C, -0.3 C from the station mean1972: 14.0 C, -0.4 C from the station mean1975: 13.9 C, -0.6 C from the station mean1977: 14.6 C, +0.2 C from the station mean1978: 13.8 C, -0.6 C from the station mean1979: 13.4 C, -1.0 C from the station mean1980: 14.6 C, +0.1 C from the station mean1981: 14.9 C, +0.5 C from the station mean1982: 13.9 C, -0.5 C from the station mean1983: 13.9 C, -0.5 C from the station mean1984: 13.7 C, -0.8 C from the station mean1985: 14.1 C, -0.3 C from the station mean1986: 14.3 C, -0.1 C from the station mean1987: 13.3 C, -1.2 C from the station mean1988: 13.7 C, -0.7 C from the station mean1989: 14.4 C, 0.0 C from the station mean1990: 14.3 C, -0.2 C from the station mean1991: 13.9 C, -0.5 C from the station mean1992: 13.8 C, -0.6 C from the station mean1993: 13.9 C, -0.5 C from the station mean1994: 14.7 C, +0.3 C from the station mean1995: 14.7 C, +0.3 C from the station mean1997: 13.3 C, -1.1 C from the station mean1998: 14.7 C, +0.2 C from the station mean1999: 14.4 C, 0.0 C from the station mean2001: 14.7 C, +0.3 C from the station mean2003: 15.3 C, +0.8 C from the station mean2004: 14.2 C, -0.2 C from the station mean2005: 14.7 C, +0.2 C from the station mean2006: 15.2 C, +0.7 C from the station mean2007: 14.4 C, 0.0 C from the station mean2008: 14.8 C, +0.4 C from the station mean2009: 14.9 C, +0.4 C from the station mean1913192019301940195019601970198019902000
One stripe for each of 74 complete years at Ft Sumner, 1913 to 2009. Blue stripes are years cooler than the station's own mean of 14.4 C (58.0 F); red stripes are warmer. The coolest year was 1913, at 12.9 C (55.2 F), and the warmest was 1954, at 17.5 C (63.4 F). The strongest colour marks a difference of 3.1 C (5.6 F).
Annual mean temperature at Ft Sumner as warming stripes, 1913 to 2009
YearAnnual mean temperatureDifference from the station mean
191312.9 C-1.54 C
191414.0 C-0.45 C
191513.4 C-0.99 C
191614.4 C+0.02 C
191814.0 C-0.43 C
191913.8 C-0.58 C
192013.7 C-0.70 C
192214.8 C+0.39 C
192413.7 C-0.75 C
192715.4 C+0.93 C
192814.3 C-0.14 C
193115.0 C+0.53 C
193416.4 C+1.99 C
193515.2 C+0.73 C
193614.7 C+0.24 C
193814.9 C+0.43 C
193914.8 C+0.42 C
194014.8 C+0.41 C
194114.2 C-0.21 C
194214.2 C-0.25 C
194315.0 C+0.57 C
194814.8 C+0.36 C
194914.5 C+0.04 C
195015.6 C+1.13 C
195115.5 C+1.08 C
195215.2 C+0.80 C
195417.5 C+3.04 C
195515.1 C+0.71 C
195615.0 C+0.57 C
195715.0 C+0.56 C
195814.7 C+0.31 C
195914.2 C-0.20 C
196013.6 C-0.83 C
196113.6 C-0.80 C
196214.3 C-0.08 C
196314.3 C-0.13 C
196414.1 C-0.35 C
196514.4 C+0.02 C
196613.9 C-0.55 C
196714.5 C+0.07 C
196813.9 C-0.53 C
197114.1 C-0.32 C
197214.0 C-0.44 C
197513.9 C-0.57 C
197714.6 C+0.18 C
197813.8 C-0.62 C
197913.4 C-1.01 C
198014.6 C+0.13 C
198114.9 C+0.50 C
198213.9 C-0.51 C
198313.9 C-0.51 C
198413.7 C-0.76 C
198514.1 C-0.32 C
198614.3 C-0.13 C
198713.3 C-1.16 C
198813.7 C-0.72 C
198914.4 C-0.02 C
199014.3 C-0.15 C
199113.9 C-0.49 C
199213.8 C-0.63 C
199313.9 C-0.53 C
199414.7 C+0.32 C
199514.7 C+0.32 C
199713.3 C-1.12 C
199814.7 C+0.24 C
199914.4 C-0.03 C
200114.7 C+0.26 C
200315.3 C+0.84 C
200414.2 C-0.21 C
200514.7 C+0.25 C
200615.2 C+0.73 C
200714.4 C-0.04 C
200814.8 C+0.36 C
200914.9 C+0.45 C

The fitted trend in annual mean temperature here over 1913 to 2009 is -0.01 C (-0.07 to 0.05) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.03 F (-0.13 to 0.08) per decade. The slope is a straight line fitted to 74 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ft Sumner
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.01 C (-0.07 to 0.05) per decade-0.03 F (-0.13 to 0.08) per decade1913 to 200974Not clearly different from zero
Mean daily maximum-0.12 C (-0.19 to -0.04) per decade-0.2 F (-0.4 to -0.1) per decade1913 to 200974Fall
Mean daily minimum0.09 C (0.03 to 0.15) per decade0.2 F (0.1 to 0.3) per decade1913 to 200974Rise

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

1909 to 2011
Yearly extremes at Ft Sumner: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.8 C (109.0 F)191838.9 C (102.0 F)101
Coldest night (TNn)-32.8 C (-27.0 F)1963-16.7 C (1.9 F)101
Wettest day (Rx1day)179.6 mm (7.1 in)197043.4 mm (1.7 in)101
Wettest five days (Rx5day)205.8 mm (8.1 in)197065.8 mm (2.6 in)101
Longest dry spell (CDD)124 days197248 days101

Hottest day (TXx)

Hottest day (TXx) at Ft Sumner by year The hottest day of the year at Ft Sumner, 1909 to 2011. The record is 42.8 C (109.0 F) in 1918, marked on the chart; the median year is 38.9 C (102.0 F). 20253035404519201940196019802000Record: 42.8 C (109.0 F) in 1918
The hottest day of the year at Ft Sumner, 1909 to 2011. The record is 42.8 C (109.0 F) in 1918, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Ft Sumner by year
YearHottest day (TXx)
190940.6 C (105.1 F)
191040.6 C (105.1 F)
191141.1 C (106.0 F)
191238.9 C (102.0 F)
191340.0 C (104.0 F)
191437.8 C (100.0 F)
191537.2 C (99.0 F)
191640.6 C (105.1 F)
191741.1 C (106.0 F)
191842.8 C (109.0 F)
191939.4 C (102.9 F)
192038.3 C (100.9 F)
192138.3 C (100.9 F)
192239.4 C (102.9 F)
192339.4 C (102.9 F)
192440.6 C (105.1 F)
192540.6 C (105.1 F)
192638.9 C (102.0 F)
192740.0 C (104.0 F)
192840.6 C (105.1 F)
192940.6 C (105.1 F)
193038.9 C (102.0 F)
193138.9 C (102.0 F)
193237.8 C (100.0 F)
193340.6 C (105.1 F)
193442.2 C (108.0 F)
193540.0 C (104.0 F)
193640.6 C (105.1 F)
193739.4 C (102.9 F)
193838.3 C (100.9 F)
193942.2 C (108.0 F)
194042.2 C (108.0 F)
194137.8 C (100.0 F)
194240.0 C (104.0 F)
194340.0 C (104.0 F)
194440.6 C (105.1 F)
194733.3 C (91.9 F)
194839.4 C (102.9 F)
194938.9 C (102.0 F)
195038.9 C (102.0 F)
195141.7 C (107.1 F)
195239.4 C (102.9 F)
195341.1 C (106.0 F)
195440.6 C (105.1 F)
195537.8 C (100.0 F)
195639.4 C (102.9 F)
195742.2 C (108.0 F)
195842.8 C (109.0 F)
195938.9 C (102.0 F)
196041.7 C (107.1 F)
196138.3 C (100.9 F)
196238.3 C (100.9 F)
196340.6 C (105.1 F)
196440.0 C (104.0 F)
196537.2 C (99.0 F)
196639.4 C (102.9 F)
196737.2 C (99.0 F)
196841.7 C (107.1 F)
196938.9 C (102.0 F)
197038.3 C (100.9 F)
197137.8 C (100.0 F)
197237.8 C (100.0 F)
197323.9 C (75.0 F)
197439.4 C (102.9 F)
197538.3 C (100.9 F)
197637.2 C (99.0 F)
197740.0 C (104.0 F)
197840.0 C (104.0 F)
197938.9 C (102.0 F)
198040.0 C (104.0 F)
198141.7 C (107.1 F)
198237.2 C (99.0 F)
198338.3 C (100.9 F)
198436.1 C (97.0 F)
198537.2 C (99.0 F)
198637.2 C (99.0 F)
198736.1 C (97.0 F)
198836.7 C (98.1 F)
198937.8 C (100.0 F)
199041.1 C (106.0 F)
199137.8 C (100.0 F)
199238.9 C (102.0 F)
199337.8 C (100.0 F)
199441.7 C (107.1 F)
199540.6 C (105.1 F)
199638.3 C (100.9 F)
199736.7 C (98.1 F)
199840.0 C (104.0 F)
199937.2 C (99.0 F)
200038.3 C (100.9 F)
200137.2 C (99.0 F)
200238.9 C (102.0 F)
200338.3 C (100.9 F)
200437.8 C (100.0 F)
200537.8 C (100.0 F)
200638.3 C (100.9 F)
200738.9 C (102.0 F)
200842.2 C (108.0 F)
200938.9 C (102.0 F)
201039.4 C (102.9 F)
201139.4 C (102.9 F)

Coldest night (TNn)

Coldest night (TNn) at Ft Sumner by year The coldest night of the year at Ft Sumner, 1909 to 2011. The record is -32.8 C (-27.0 F) in 1963, marked on the chart; the median year is -16.7 C (1.9 F). -40-30-20-1019201940196019802000Record: -32.8 C (-27.0 F) in 1963
The coldest night of the year at Ft Sumner, 1909 to 2011. The record is -32.8 C (-27.0 F) in 1963, marked on the chart; the median year is -16.7 C (1.9 F).
Coldest night (TNn) at Ft Sumner by year
YearColdest night (TNn)
1909-23.9 C (-11.0 F)
1910-20.0 C (-4.0 F)
1911-24.4 C (-11.9 F)
1912-22.2 C (-8.0 F)
1913-21.1 C (-6.0 F)
1914-16.1 C (3.0 F)
1915-18.3 C (-0.9 F)
1916-14.4 C (6.1 F)
1917-13.9 C (7.0 F)
1918-17.8 C (0.0 F)
1919-21.7 C (-7.1 F)
1920-11.7 C (10.9 F)
1921-13.3 C (8.1 F)
1922-16.7 C (1.9 F)
1923-16.1 C (3.0 F)
1924-20.0 C (-4.0 F)
1925-16.1 C (3.0 F)
1926-13.9 C (7.0 F)
1927-17.2 C (1.0 F)
1928-16.7 C (1.9 F)
1929-23.3 C (-9.9 F)
1930-12.8 C (9.0 F)
1931-11.1 C (12.0 F)
1932-15.6 C (3.9 F)
1933-15.0 C (5.0 F)
1934-14.4 C (6.1 F)
1935-15.6 C (3.9 F)
1936-16.7 C (1.9 F)
1937-22.2 C (-8.0 F)
1938-16.7 C (1.9 F)
1939-24.4 C (-11.9 F)
1940-16.7 C (1.9 F)
1941-11.7 C (10.9 F)
1942-17.2 C (1.0 F)
1943-21.1 C (-6.0 F)
1944-13.9 C (7.0 F)
1947-12.2 C (10.0 F)
1948-20.0 C (-4.0 F)
1949-21.7 C (-7.1 F)
1950-16.7 C (1.9 F)
1951-26.7 C (-16.1 F)
1952-12.8 C (9.0 F)
1953-14.4 C (6.1 F)
1954-14.4 C (6.1 F)
1955-12.2 C (10.0 F)
1956-13.9 C (7.0 F)
1957-16.1 C (3.0 F)
1958-13.3 C (8.1 F)
1959-20.0 C (-4.0 F)
1960-23.9 C (-11.0 F)
1961-16.7 C (1.9 F)
1962-23.3 C (-9.9 F)
1963-32.8 C (-27.0 F)
1964-20.6 C (-5.1 F)
1965-13.9 C (7.0 F)
1966-22.2 C (-8.0 F)
1967-17.8 C (0.0 F)
1968-12.2 C (10.0 F)
1969-12.8 C (9.0 F)
1970-16.7 C (1.9 F)
1971-26.1 C (-15.0 F)
1972-16.1 C (3.0 F)
1973-13.3 C (8.1 F)
1974-10.0 C (14.0 F)
1975-17.2 C (1.0 F)
1976-17.8 C (0.0 F)
1977-18.9 C (-2.0 F)
1978-27.8 C (-18.0 F)
1979-23.9 C (-11.0 F)
1980-15.0 C (5.0 F)
1981-17.2 C (1.0 F)
1982-17.8 C (0.0 F)
1983-20.6 C (-5.1 F)
1984-18.3 C (-0.9 F)
1985-20.0 C (-4.0 F)
1986-17.8 C (0.0 F)
1987-21.7 C (-7.1 F)
1988-13.9 C (7.0 F)
1989-16.7 C (1.9 F)
1990-25.6 C (-14.1 F)
1991-12.8 C (9.0 F)
1992-16.7 C (1.9 F)
1993-13.9 C (7.0 F)
1994-15.6 C (3.9 F)
1995-11.1 C (12.0 F)
1996-16.7 C (1.9 F)
1997-21.1 C (-6.0 F)
1998-15.6 C (3.9 F)
1999-16.7 C (1.9 F)
2000-13.3 C (8.1 F)
2001-12.2 C (10.0 F)
2002-15.6 C (3.9 F)
2003-10.6 C (12.9 F)
2004-18.9 C (-2.0 F)
2005-19.4 C (-2.9 F)
2006-13.3 C (8.1 F)
2007-15.6 C (3.9 F)
2008-14.4 C (6.1 F)
2009-13.3 C (8.1 F)
2010-12.2 C (10.0 F)
2011-16.7 C (1.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Ft Sumner by year The wettest day of the year at Ft Sumner, 1909 to 2011. The record is 179.6 mm (7.1 in) in 1970, marked on the chart; the median year is 43.4 mm (1.7 in). 05010015020019201940196019802000Record: 179.6 mm (7.1 in) in 1970
The wettest day of the year at Ft Sumner, 1909 to 2011. The record is 179.6 mm (7.1 in) in 1970, marked on the chart; the median year is 43.4 mm (1.7 in).
Wettest day (Rx1day) at Ft Sumner by year
YearWettest day (Rx1day)
190915.0 mm (0.6 in)
191043.2 mm (1.7 in)
191134.0 mm (1.3 in)
191234.3 mm (1.4 in)
191344.7 mm (1.8 in)
191431.8 mm (1.3 in)
191547.2 mm (1.9 in)
191624.6 mm (1.0 in)
191759.7 mm (2.4 in)
191841.9 mm (1.6 in)
191969.3 mm (2.7 in)
192039.1 mm (1.5 in)
192125.4 mm (1.0 in)
192263.5 mm (2.5 in)
192363.0 mm (2.5 in)
192443.2 mm (1.7 in)
192556.4 mm (2.2 in)
192648.3 mm (1.9 in)
192750.0 mm (2.0 in)
192872.1 mm (2.8 in)
192930.2 mm (1.2 in)
193062.5 mm (2.5 in)
193176.2 mm (3.0 in)
193230.5 mm (1.2 in)
193382.6 mm (3.3 in)
193445.2 mm (1.8 in)
193531.5 mm (1.2 in)
193640.1 mm (1.6 in)
193777.5 mm (3.1 in)
193833.5 mm (1.3 in)
193975.4 mm (3.0 in)
194046.7 mm (1.8 in)
194193.7 mm (3.7 in)
194272.1 mm (2.8 in)
194331.8 mm (1.3 in)
194439.4 mm (1.6 in)
194719.8 mm (0.8 in)
194827.9 mm (1.1 in)
194939.4 mm (1.6 in)
195025.7 mm (1.0 in)
195119.6 mm (0.8 in)
195225.1 mm (1.0 in)
195338.1 mm (1.5 in)
1954114.6 mm (4.5 in)
195513.7 mm (0.5 in)
195613.5 mm (0.5 in)
195728.7 mm (1.1 in)
195846.7 mm (1.8 in)
195937.1 mm (1.5 in)
196084.8 mm (3.3 in)
196134.8 mm (1.4 in)
196258.4 mm (2.3 in)
196363.2 mm (2.5 in)
196452.1 mm (2.1 in)
196540.1 mm (1.6 in)
196655.9 mm (2.2 in)
196789.4 mm (3.5 in)
196828.7 mm (1.1 in)
196961.5 mm (2.4 in)
1970179.6 mm (7.1 in)
197171.6 mm (2.8 in)
197259.2 mm (2.3 in)
197316.0 mm (0.6 in)
197436.8 mm (1.4 in)
197543.4 mm (1.7 in)
197631.2 mm (1.2 in)
197749.5 mm (1.9 in)
197889.9 mm (3.5 in)
197928.4 mm (1.1 in)
198032.0 mm (1.3 in)
198163.8 mm (2.5 in)
198255.9 mm (2.2 in)
198333.5 mm (1.3 in)
198430.5 mm (1.2 in)
198589.4 mm (3.5 in)
1986104.1 mm (4.1 in)
198756.6 mm (2.2 in)
198857.2 mm (2.3 in)
198939.1 mm (1.5 in)
199036.1 mm (1.4 in)
199180.0 mm (3.1 in)
199245.0 mm (1.8 in)
199332.3 mm (1.3 in)
199427.2 mm (1.1 in)
199528.7 mm (1.1 in)
199636.1 mm (1.4 in)
199783.8 mm (3.3 in)
199842.9 mm (1.7 in)
1999100.3 mm (3.9 in)
2000103.4 mm (4.1 in)
200126.7 mm (1.1 in)
200275.9 mm (3.0 in)
200355.9 mm (2.2 in)
200449.0 mm (1.9 in)
200572.6 mm (2.9 in)
200633.5 mm (1.3 in)
200724.6 mm (1.0 in)
200857.2 mm (2.3 in)
200934.3 mm (1.4 in)
201045.2 mm (1.8 in)
201118.0 mm (0.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ft Sumner by year The wettest five days of the year at Ft Sumner, 1909 to 2011. The record is 205.8 mm (8.1 in) in 1970, marked on the chart; the median year is 65.8 mm (2.6 in). 05010015020025019201940196019802000Record: 205.8 mm (8.1 in) in 1970
The wettest five days of the year at Ft Sumner, 1909 to 2011. The record is 205.8 mm (8.1 in) in 1970, marked on the chart; the median year is 65.8 mm (2.6 in).
Wettest five days (Rx5day) at Ft Sumner by year
YearWettest five days (Rx5day)
190921.3 mm (0.8 in)
191052.6 mm (2.1 in)
191158.1 mm (2.3 in)
191250.9 mm (2.0 in)
191365.0 mm (2.6 in)
191466.6 mm (2.6 in)
191585.3 mm (3.4 in)
191636.5 mm (1.4 in)
191779.5 mm (3.1 in)
191881.1 mm (3.2 in)
1919156.5 mm (6.2 in)
192042.4 mm (1.7 in)
192143.2 mm (1.7 in)
192263.5 mm (2.5 in)
192387.0 mm (3.4 in)
192443.2 mm (1.7 in)
192575.7 mm (3.0 in)
192671.8 mm (2.8 in)
192783.7 mm (3.3 in)
192891.0 mm (3.6 in)
192935.3 mm (1.4 in)
193093.2 mm (3.7 in)
1931100.6 mm (4.0 in)
193278.5 mm (3.1 in)
1933194.7 mm (7.7 in)
193452.0 mm (2.0 in)
193536.5 mm (1.4 in)
193653.9 mm (2.1 in)
1937131.6 mm (5.2 in)
1938108.7 mm (4.3 in)
193976.7 mm (3.0 in)
194067.5 mm (2.7 in)
1941133.4 mm (5.3 in)
1942105.4 mm (4.1 in)
194337.4 mm (1.5 in)
194440.4 mm (1.6 in)
194719.8 mm (0.8 in)
194837.3 mm (1.5 in)
194965.3 mm (2.6 in)
195039.7 mm (1.6 in)
195127.8 mm (1.1 in)
195239.1 mm (1.5 in)
195369.9 mm (2.8 in)
1954163.9 mm (6.5 in)
195524.7 mm (1.0 in)
195632.9 mm (1.3 in)
195736.3 mm (1.4 in)
195890.9 mm (3.6 in)
195954.1 mm (2.1 in)
1960184.5 mm (7.3 in)
196151.6 mm (2.0 in)
196265.8 mm (2.6 in)
196378.2 mm (3.1 in)
196455.1 mm (2.2 in)
196543.1 mm (1.7 in)
196680.1 mm (3.2 in)
196789.7 mm (3.5 in)
196874.9 mm (2.9 in)
196973.4 mm (2.9 in)
1970205.8 mm (8.1 in)
197171.6 mm (2.8 in)
1972128.8 mm (5.1 in)
197316.0 mm (0.6 in)
197449.6 mm (2.0 in)
197565.5 mm (2.6 in)
197639.6 mm (1.6 in)
197766.5 mm (2.6 in)
1978130.6 mm (5.1 in)
197952.5 mm (2.1 in)
198053.8 mm (2.1 in)
198185.7 mm (3.4 in)
198255.9 mm (2.2 in)
198345.7 mm (1.8 in)
198450.8 mm (2.0 in)
198592.9 mm (3.7 in)
1986111.7 mm (4.4 in)
198765.7 mm (2.6 in)
198880.5 mm (3.2 in)
198952.8 mm (2.1 in)
199056.7 mm (2.2 in)
1991151.9 mm (6.0 in)
199274.5 mm (2.9 in)
199340.6 mm (1.6 in)
199465.1 mm (2.6 in)
199546.8 mm (1.8 in)
199646.2 mm (1.8 in)
199786.1 mm (3.4 in)
1998102.1 mm (4.0 in)
1999157.2 mm (6.2 in)
2000112.8 mm (4.4 in)
200127.2 mm (1.1 in)
200297.7 mm (3.8 in)
200363.1 mm (2.5 in)
200469.7 mm (2.7 in)
200579.7 mm (3.1 in)
200666.1 mm (2.6 in)
200734.3 mm (1.4 in)
2008141.8 mm (5.6 in)
200940.7 mm (1.6 in)
201078.0 mm (3.1 in)
201120.9 mm (0.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ft Sumner by year The longest dry spell of the year at Ft Sumner, 1909 to 2011. The record is 124 days in 1972, marked on the chart; the median year is 48 days. 05010015019201940196019802000Record: 124 days in 1972
The longest dry spell of the year at Ft Sumner, 1909 to 2011. The record is 124 days in 1972, marked on the chart; the median year is 48 days.
Longest dry spell (CDD) at Ft Sumner by year
YearLongest dry spell (CDD)
190935 days
191062 days
191129 days
191239 days
191342 days
191457 days
191553 days
191662 days
191738 days
191856 days
191928 days
192058 days
1921105 days
192245 days
192331 days
192454 days
192570 days
192657 days
192768 days
192835 days
192947 days
193034 days
193134 days
193248 days
193373 days
193459 days
193560 days
193662 days
193748 days
193844 days
193948 days
194031 days
194122 days
194245 days
194382 days
194425 days
194729 days
194854 days
194932 days
195089 days
195151 days
195240 days
195354 days
195450 days
195590 days
195673 days
195748 days
195833 days
195950 days
196066 days
196147 days
196237 days
196342 days
1964111 days
196544 days
196693 days
196765 days
196849 days
196943 days
197059 days
197152 days
1972124 days
197341 days
1974104 days
197558 days
197633 days
197754 days
197833 days
197937 days
198040 days
198140 days
198242 days
198342 days
198446 days
198527 days
198635 days
198735 days
198855 days
198956 days
199053 days
199162 days
199234 days
199331 days
199459 days
199556 days
1996117 days
199735 days
199834 days
199946 days
200060 days
200137 days
200249 days
200345 days
200448 days
200573 days
200662 days
200751 days
200848 days
200940 days
201056 days
201189 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

74 years with a frost

Across 74 years with a frost, the median last spring frost at Ft Sumner falls on 18 April and the median first autumn frost on 22 October, which leaves a median of 189 days between them.

In 1977 to 2009 the median growing season was 187 days. That is 7 days fewer than in 1913 to 1957.

Fitted over all years, the growing season changes by -0.4 days per decade at this station.

Frost dates and growing season at Ft Sumner
MeasureMedian, all yearsEarliest period (1913 to 1957)Recent period (1977 to 2009)Recent against earliestFitted trend
Last spring frost18 April14 April19 April5 days later-0.1 days per decade
First autumn frost22 October26 October19 October7 days earlier-0.5 days per decade
Growing days189 days194 days187 days7 days fewer-0.4 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

87 years, 1910 to 2010

A day with at least 47.1 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 126.6 mm (5.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Ft Sumner: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years47.1 mm (1.9 in)
5 years67.7 mm (2.7 in)
10 years81.6 mm (3.2 in)
25 years99.5 mm (3.9 in)
50 years113.0 mm (4.4 in)
100 years126.6 mm (5.0 in)Longer than the 87 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, 87 years of values from 1910 to 2010.

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: 114.6 mm (4.5 in) in 1954; 104.1 mm (4.1 in) in 1986; 103.4 mm (4.1 in) in 2000.

Station Changes

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

Download the Data

  • Data for Ft Sumner standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Ft Sumner 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).