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Leo 6 SW Weather Records (USC00485525)

Record envelope, standing records and threshold days for Leo 6 SW (USC00485525), Wyoming, United States, with 97 years of record.

Key Facts for Leo 6 SW

  • Leo 6 SW (USC00485525) is a weather station in Wyoming, United States at 42.20 latitude and -106.86 longitude, 1,840 m (6,035 ft) above sea level.
  • The station reports from 1930 to 2026, 97 years of record.
  • 1,464 records set at Leo 6 SW still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Leo 6 SW set a daily record high minimum temperature of 15.6 C (60.1 F) on 31 August 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Wyoming, United States, 42.20 latitude, -106.86 longitude.
  • Elevation: 1,840 m (6,035 ft).
  • Period of record: 1930 to 2026, 97 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 Leo 6 SW, with 2026 drawn through them The band shows the record high and record low for each calendar day at Leo 6 SW. 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 Leo 6 SW. 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 Leo 6 SW, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan15.6 C (60.1 F)-40.0 C (-40.0 F)11.7 C (53.1 F)-23.3 C (-9.9 F)
Feb23.9 C (75.0 F)-40.0 C (-40.0 F)15.6 C (60.1 F)-16.1 C (3.0 F)
Mar27.8 C (82.0 F)-31.7 C (-25.1 F)27.8 C (82.0 F)-12.2 C (10.0 F)
Apr28.3 C (82.9 F)-21.7 C (-7.1 F)25.0 C (77.0 F)-6.7 C (19.9 F)
May35.0 C (95.0 F)-15.0 C (5.0 F)30.0 C (86.0 F)-7.2 C (19.0 F)
Jun37.2 C (99.0 F)-8.9 C (16.0 F)33.3 C (91.9 F)1.1 C (34.0 F)
Jul38.9 C (102.0 F)-3.9 C (25.0 F)37.8 C (100.0 F)4.4 C (39.9 F)
Aug38.3 C (100.9 F)-1.7 C (28.9 F)38.3 C (100.9 F)5.0 C (41.0 F)
Sep36.7 C (98.1 F)-12.2 C (10.0 F)n/an/a
Oct28.9 C (84.0 F)-26.7 C (-16.1 F)n/an/a
Nov23.9 C (75.0 F)-31.1 C (-24.0 F)n/an/a
Dec17.2 C (63.0 F)-35.6 C (-32.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Leo 6 SW by the year they were set 1,464 records at Leo 6 SW still stand. 2015 holds the most, with 56. 02040601930: 281931: 301932: 381933: 371934: 421935: 481936: 371937: 281938: 131939: 341940: 261941: 161942: 251943: 311944: 161945: 161946: 331947: 271948: 271949: 181950: 351951: 261952: 191953: 171954: 161955: 191956: 171957: 141958: 191959: 191960: 181961: 181962: 391963: 141965: 11967: 11968: 21970: 31971: 21973: 41978: 181979: 61980: 52012: 472013: 372014: 522015: 562016: 332017: 252018: 322019: 312020: 502021: 432022: 372023: 232024: 192025: 392026: 381930193619421948195419601968198020172023
1,464 records at Leo 6 SW still stand. 2015 holds the most, with 56.
Standing records at Leo 6 SW by the year they were set
Year setStanding records
193028
193130
193238
193337
193442
193548
193637
193728
193813
193934
194026
194116
194225
194331
194416
194516
194633
194727
194827
194918
195035
195126
195219
195317
195416
195519
195617
195714
195819
195919
196018
196118
196239
196314
19651
19671
19682
19703
19712
19734
197818
19796
19805
201247
201337
201452
201556
201633
201725
201832
201931
202050
202143
202237
202323
202419
202539
202638

All-Time Record Progression

6 new records
When Leo 6 SW set new all-time records 6 all-time records were set at Leo 6 SW between 14 March 1973 and 4 April 2023. Each dot is a new record. Record daily snowfallRecord snow depthRecord high minimum temperatureRecord high maximum temperature14 March 1973: Record daily snowfall 50.8 cm (20.0 in)6 May 2007: Record snow depth 53.3 cm (21.0 in)21 July 2012: Record high minimum temperature 23.3 C (73.9 F)6 July 2014: Record high maximum temperature 38.9 C (102.0 F)17 July 2022: Record high minimum temperature 26.1 C (79.0 F)4 April 2023: Record snow depth 58.4 cm (23.0 in)19801990200020102020
6 all-time records were set at Leo 6 SW between 14 March 1973 and 4 April 2023. Each dot is a new record.
When Leo 6 SW set new all-time records
DateKindDetail
1973-03-14Record daily snowfallRecord daily snowfall 50.8 cm (20.0 in)
2007-05-06Record snow depthRecord snow depth 53.3 cm (21.0 in)
2012-07-21Record high minimum temperatureRecord high minimum temperature 23.3 C (73.9 F)
2014-07-06Record high maximum temperatureRecord high maximum temperature 38.9 C (102.0 F)
2022-07-17Record high minimum temperatureRecord high minimum temperature 26.1 C (79.0 F)
2023-04-04Record snow depthRecord snow depth 58.4 cm (23.0 in)

Wettest Day of Each Month

Jun: 60.2 mm (2.4 in)
Record daily precipitation for each month at Leo 6 SW The wettest day on record for each calendar month at Leo 6 SW. The most was 60.2 mm (2.4 in) on 18 June 1946. 020406080 Jan: 16.3 mm (0.6 in), 23 January 1949 Jan Feb: 27.9 mm (1.1 in), 22 February 2023 Feb Mar: 31.8 mm (1.3 in), 14 March 1973 Mar Apr: 48.5 mm (1.9 in), 30 April 1973 Apr May: 54.1 mm (2.1 in), 14 May 1965 May Jun: 60.2 mm (2.4 in), 18 June 1946 Jun Jul: 44.5 mm (1.8 in), 12 July 1937 Jul Aug: 41.4 mm (1.6 in), 1 August 1994 Aug Sep: 40.1 mm (1.6 in), 30 September 2007 Sep Oct: 55.4 mm (2.2 in), 6 October 1962 Oct Nov: 31.5 mm (1.2 in), 1 November 2011 Nov Dec: 20.6 mm (0.8 in), 16 December 2016 Dec
The wettest day on record for each calendar month at Leo 6 SW. The most was 60.2 mm (2.4 in) on 18 June 1946.
Record daily precipitation for each month at Leo 6 SW
MonthRecord daily precipitation (mm)Date
Jan16.3 mm (0.6 in)23 January 1949
Feb27.9 mm (1.1 in)22 February 2023
Mar31.8 mm (1.3 in)14 March 1973
Apr48.5 mm (1.9 in)30 April 1973
May54.1 mm (2.1 in)14 May 1965
Jun60.2 mm (2.4 in)18 June 1946
Jul44.5 mm (1.8 in)12 July 1937
Aug41.4 mm (1.6 in)1 August 1994
Sep40.1 mm (1.6 in)30 September 2007
Oct55.4 mm (2.2 in)6 October 1962
Nov31.5 mm (1.2 in)1 November 2011
Dec20.6 mm (0.8 in)16 December 2016

Period of Record Coverage

1930 to 2026
Days with data per year at Leo 6 SW 60 years of record at Leo 6 SW, 1930 to 2026. 30 years have data for under 90 percent of days and are left out of rankings: 1930, 1938, 1939, 1941, 1950, 1951, 1952, 1953 and others. 1930: 310 of 365 days1931: 353 of 365 days1932: 365 of 366 days1933: 363 of 365 days1934: 354 of 365 days1935: 359 of 365 days1936: 365 of 366 days1937: 364 of 365 days1938: 234 of 365 days1939: 300 of 365 days1940: 354 of 366 days1941: 301 of 365 days1942: 359 of 365 days1943: 350 of 365 days1944: 365 of 366 days1945: 334 of 365 days1946: 363 of 365 days1947: 364 of 365 days1948: 350 of 366 days1949: 331 of 365 days1950: 326 of 365 days1951: 297 of 365 days1952: 295 of 366 days1953: 243 of 365 days1954: 230 of 365 days1955: 218 of 365 days1956: 254 of 366 days1957: 274 of 365 days1958: 280 of 365 days1959: 287 of 365 days1960: 298 of 366 days1961: 297 of 365 days1962: 316 of 365 days1963: 298 of 365 days1964: 58 of 366 days1965: 31 of 365 days1967: 28 of 365 days1968: 29 of 366 days1970: 83 of 365 days1971: 27 of 365 days1973: 23 of 365 days1976: 28 of 366 days1978: 183 of 365 days1979: 31 of 365 days1980: 88 of 366 days2012: 364 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 364 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 364 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 243 of 365 days1930194019501960197019802020
60 years of record at Leo 6 SW, 1930 to 2026. 30 years have data for under 90 percent of days and are left out of rankings: 1930, 1938, 1939, 1941, 1950, 1951, 1952, 1953 and others.
Days with data per year at Leo 6 SW
YearDays with dataShare of yearComplete
193031085%No
193135397%Yes
1932365100%Yes
193336399%Yes
193435497%Yes
193535998%Yes
1936365100%Yes
1937364100%Yes
193823464%No
193930082%No
194035497%Yes
194130182%No
194235998%Yes
194335096%Yes
1944365100%Yes
194533492%Yes
194636399%Yes
1947364100%Yes
194835096%Yes
194933191%Yes
195032689%No
195129781%No
195229581%No
195324367%No
195423063%No
195521860%No
195625469%No
195727475%No
195828077%No
195928779%No
196029881%No
196129781%No
196231687%No
196329882%No
19645816%No
1965318%No
1967288%No
1968298%No
19708323%No
1971277%No
1973236%No
1976288%No
197818350%No
1979318%No
19808824%No
201236499%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017364100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022364100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202624367%No

Latest Records

20
Latest records at Leo 6 SW
DateStationRecordValueBeat old record byOld record stoodSignificance
31 August 2026Leo 6 SW, USdaily high min (Provisional)15.6 C (60.1 F)1.2 C (2.2 F)88 years38 of 100 (Notable)
27 August 2026Leo 6 SW, USdaily high max (Tie, Provisional)32.8 C (91.0 F)tie13 years3 of 100 (Routine)
21 August 2026Leo 6 SW, USdaily high max (Provisional)36.1 C (97.0 F)1.7 C (3.1 F)0 years13 of 100 (Routine)
17 August 2026Leo 6 SW, USdaily high min (Provisional)20.6 C (69.1 F)3.4 C (6.1 F)4 years18 of 100 (Routine)
10 August 2026Leo 6 SW, USdaily high min17.2 C (63.0 F)0.5 C (0.9 F)92 years37 of 100 (Notable)
9 August 2026Leo 6 SW, USdaily high max (Tie)35.0 C (95.0 F)tie89 years8 of 100 (Routine)
8 August 2026Leo 6 SW, USdaily high max36.1 C (97.0 F)1.1 C (2.0 F)89 years38 of 100 (Notable)
2 August 2026Leo 6 SW, USmonthly high max38.3 C (100.9 F)1.6 C (2.9 F)12 years26 of 100 (Routine)
31 July 2026Leo 6 SW, USdaily high max (Tie)33.9 C (93.0 F)tie85 years8 of 100 (Routine)
27 July 2026Leo 6 SW, USdaily high min (Tie)17.8 C (64.0 F)tie7 years2 of 100 (Routine)
26 July 2026Leo 6 SW, USdaily high max (Tie)37.2 C (99.0 F)tie1 year2 of 100 (Routine)
23 July 2026Leo 6 SW, USdaily high min (Tie)17.2 C (63.0 F)tie13 years3 of 100 (Routine)
22 July 2026Leo 6 SW, USdaily high min (Tie)16.7 C (62.1 F)tie8 years2 of 100 (Routine)
21 July 2026Leo 6 SW, USdaily high max36.7 C (98.1 F)1.1 C (2.0 F)12 years15 of 100 (Routine)
20 July 2026Leo 6 SW, USdaily high max (Tie)36.7 C (98.1 F)tie8 years2 of 100 (Routine)
15 July 2026Leo 6 SW, USdaily high max36.7 C (98.1 F)1.7 C (3.1 F)13 years18 of 100 (Routine)
14 July 2026Leo 6 SW, USdaily high max37.2 C (99.0 F)0.5 C (0.9 F)0 years10 of 100 (Routine)
13 July 2026Leo 6 SW, USdaily high max37.8 C (100.0 F)0.6 C (1.1 F)72 years31 of 100 (Routine)
12 July 2026Leo 6 SW, USdaily high max (Tie)37.8 C (100.0 F)tie72 years7 of 100 (Routine)
24 June 2026Leo 6 SW, USdaily rain22.4 mm (0.9 in)1.1 mm (0.04 in)44 years20 of 100 (Routine)

Climate Trend

29 complete years, 1931 to 2025
Annual mean temperature at Leo 6 SW as warming stripes, 1931 to 2025 One stripe for each of 29 complete years at Leo 6 SW, 1931 to 2025. Blue stripes are years cooler than the station's own mean of 7.7 C (45.9 F); red stripes are warmer. The coolest year was 1932, at 6.0 C (42.7 F), and the warmest was 2025, at 9.3 C (48.7 F). The strongest colour marks a difference of 1.8 C (3.2 F). 1931: 7.4 C, -0.3 C from the station mean1932: 6.0 C, -1.8 C from the station mean1933: 8.0 C, +0.2 C from the station mean1934: 9.2 C, +1.5 C from the station mean1935: 8.1 C, +0.3 C from the station mean1937: 6.9 C, -0.9 C from the station mean1940: 7.7 C, 0.0 C from the station mean1942: 6.6 C, -1.2 C from the station mean1943: 6.9 C, -0.8 C from the station mean1944: 6.1 C, -1.6 C from the station mean1946: 7.4 C, -0.3 C from the station mean1947: 6.8 C, -0.9 C from the station mean1948: 6.9 C, -0.8 C from the station mean1949: 6.6 C, -1.1 C from the station mean1962: 7.2 C, -0.5 C from the station mean2012: 8.9 C, +1.2 C from the station mean2013: 6.9 C, -0.8 C from the station mean2014: 8.3 C, +0.5 C from the station mean2015: 9.3 C, +1.5 C from the station mean2016: 8.8 C, +1.1 C from the station mean2017: 8.7 C, +1.0 C from the station mean2018: 8.2 C, +0.5 C from the station mean2019: 6.8 C, -0.9 C from the station mean2020: 8.1 C, +0.4 C from the station mean2021: 8.6 C, +0.9 C from the station mean2022: 7.8 C, +0.1 C from the station mean2023: 7.5 C, -0.3 C from the station mean2024: 9.2 C, +1.5 C from the station mean2025: 9.3 C, +1.5 C from the station mean1931194019501960197019801990200020102020
One stripe for each of 29 complete years at Leo 6 SW, 1931 to 2025. Blue stripes are years cooler than the station's own mean of 7.7 C (45.9 F); red stripes are warmer. The coolest year was 1932, at 6.0 C (42.7 F), and the warmest was 2025, at 9.3 C (48.7 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Leo 6 SW as warming stripes, 1931 to 2025
YearAnnual mean temperatureDifference from the station mean
19317.4 C-0.32 C
19326.0 C-1.77 C
19338.0 C+0.24 C
19349.2 C+1.50 C
19358.1 C+0.34 C
19376.9 C-0.85 C
19407.7 C+0.01 C
19426.6 C-1.17 C
19436.9 C-0.84 C
19446.1 C-1.63 C
19467.4 C-0.29 C
19476.8 C-0.91 C
19486.9 C-0.82 C
19496.6 C-1.14 C
19627.2 C-0.54 C
20128.9 C+1.20 C
20136.9 C-0.83 C
20148.3 C+0.53 C
20159.3 C+1.54 C
20168.8 C+1.11 C
20178.7 C+1.02 C
20188.2 C+0.47 C
20196.8 C-0.94 C
20208.1 C+0.41 C
20218.6 C+0.90 C
20227.8 C+0.12 C
20237.5 C-0.27 C
20249.2 C+1.52 C
20259.3 C+1.55 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1930 to 2026
Yearly extremes at Leo 6 SW: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)201434.4 C (93.9 F)60
Coldest night (TNn)-40.0 C (-40.0 F)1930-30.0 C (-22.0 F)60
Wettest day (Rx1day)60.2 mm (2.4 in)194624.6 mm (1.0 in)97
Wettest five days (Rx5day)86.1 mm (3.4 in)199537.3 mm (1.5 in)97
Longest dry spell (CDD)63 days196935 days97

Hottest day (TXx)

Hottest day (TXx) at Leo 6 SW by year The hottest day of the year at Leo 6 SW, 1930 to 2026. The record is 38.9 C (102.0 F) in 2014, marked on the chart; the median year is 34.4 C (93.9 F). 01020304019401960198020002020Record: 38.9 C (102.0 F) in 2014
The hottest day of the year at Leo 6 SW, 1930 to 2026. The record is 38.9 C (102.0 F) in 2014, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Leo 6 SW by year
YearHottest day (TXx)
193036.7 C (98.1 F)
193137.2 C (99.0 F)
193233.3 C (91.9 F)
193336.1 C (97.0 F)
193433.3 C (91.9 F)
193537.8 C (100.0 F)
193636.7 C (98.1 F)
193733.9 C (93.0 F)
193831.7 C (89.1 F)
193934.4 C (93.9 F)
194036.7 C (98.1 F)
194135.6 C (96.1 F)
194235.0 C (95.0 F)
194334.4 C (93.9 F)
194432.2 C (90.0 F)
194534.4 C (93.9 F)
194634.4 C (93.9 F)
194735.0 C (95.0 F)
194833.9 C (93.0 F)
194935.6 C (96.1 F)
195032.2 C (90.0 F)
195133.3 C (91.9 F)
195233.9 C (93.0 F)
195334.4 C (93.9 F)
195437.8 C (100.0 F)
195532.8 C (91.0 F)
195633.3 C (91.9 F)
195733.3 C (91.9 F)
195833.3 C (91.9 F)
195935.0 C (95.0 F)
196034.4 C (93.9 F)
196134.4 C (93.9 F)
196233.3 C (91.9 F)
196334.4 C (93.9 F)
196421.1 C (70.0 F)
196531.7 C (89.1 F)
1966n/a
196733.3 C (91.9 F)
196822.2 C (72.0 F)
1969n/a
197033.3 C (91.9 F)
197128.3 C (82.9 F)
1972n/a
197317.8 C (64.0 F)
1974n/a
1975n/a
197636.1 C (97.0 F)
1977n/a
197833.9 C (93.0 F)
19795.0 C (41.0 F)
198032.8 C (91.0 F)
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
201236.1 C (97.0 F)
201335.6 C (96.1 F)
201438.9 C (102.0 F)
201535.0 C (95.0 F)
201637.2 C (99.0 F)
201737.2 C (99.0 F)
201837.2 C (99.0 F)
201936.1 C (97.0 F)
202036.7 C (98.1 F)
202137.2 C (99.0 F)
202236.7 C (98.1 F)
202337.8 C (100.0 F)
202437.2 C (99.0 F)
202536.7 C (98.1 F)
202638.3 C (100.9 F)

Coldest night (TNn)

Coldest night (TNn) at Leo 6 SW by year The coldest night of the year at Leo 6 SW, 1930 to 2026. The record is -40.0 C (-40.0 F) in 1930, marked on the chart; the median year is -30.0 C (-22.0 F). -40-2002019401960198020002020Record: -40.0 C (-40.0 F) in 1930
The coldest night of the year at Leo 6 SW, 1930 to 2026. The record is -40.0 C (-40.0 F) in 1930, marked on the chart; the median year is -30.0 C (-22.0 F).
Coldest night (TNn) at Leo 6 SW by year
YearColdest night (TNn)
1930-40.0 C (-40.0 F)
1931-26.1 C (-15.0 F)
1932-35.6 C (-32.1 F)
1933-37.8 C (-36.0 F)
1934-23.3 C (-9.9 F)
1935-33.3 C (-27.9 F)
1936-34.4 C (-29.9 F)
1937-35.0 C (-31.0 F)
1938-31.1 C (-24.0 F)
1939-30.6 C (-23.1 F)
1940-34.4 C (-29.9 F)
1941-30.0 C (-22.0 F)
1942-32.8 C (-27.0 F)
1943-37.2 C (-35.0 F)
1944-26.1 C (-15.0 F)
1945-33.9 C (-29.0 F)
1946-31.1 C (-24.0 F)
1947-27.8 C (-18.0 F)
1948-34.4 C (-29.9 F)
1949-31.1 C (-24.0 F)
1950-29.4 C (-20.9 F)
1951-31.7 C (-25.1 F)
1952-25.6 C (-14.1 F)
1953-25.6 C (-14.1 F)
1954-25.0 C (-13.0 F)
1955-28.9 C (-20.0 F)
1956-28.3 C (-18.9 F)
1957-31.7 C (-25.1 F)
1958-21.7 C (-7.1 F)
1959-33.3 C (-27.9 F)
1960-30.0 C (-22.0 F)
1961-30.0 C (-22.0 F)
1962-36.7 C (-34.1 F)
1963-38.3 C (-36.9 F)
1964-27.2 C (-17.0 F)
19654.4 C (39.9 F)
1966n/a
19675.0 C (41.0 F)
1968-17.2 C (1.0 F)
1969n/a
1970-19.4 C (-2.9 F)
1971-5.0 C (23.0 F)
1972n/a
1973-18.3 C (-0.9 F)
1974n/a
1975n/a
19764.4 C (39.9 F)
1977n/a
1978-31.7 C (-25.1 F)
1979-33.3 C (-27.9 F)
1980-15.6 C (3.9 F)
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
2012-26.1 C (-15.0 F)
2013-36.7 C (-34.1 F)
2014-40.0 C (-40.0 F)
2015-26.1 C (-15.0 F)
2016-30.0 C (-22.0 F)
2017-32.2 C (-26.0 F)
2018-26.1 C (-15.0 F)
2019-27.2 C (-17.0 F)
2020-23.3 C (-9.9 F)
2021-25.6 C (-14.1 F)
2022-35.6 C (-32.1 F)
2023-33.3 C (-27.9 F)
2024-34.4 C (-29.9 F)
2025-30.6 C (-23.1 F)
2026-23.3 C (-9.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Leo 6 SW by year The wettest day of the year at Leo 6 SW, 1930 to 2026. The record is 60.2 mm (2.4 in) in 1946, marked on the chart; the median year is 24.6 mm (1.0 in). 02040608019401960198020002020Record: 60.2 mm (2.4 in) in 1946
The wettest day of the year at Leo 6 SW, 1930 to 2026. The record is 60.2 mm (2.4 in) in 1946, marked on the chart; the median year is 24.6 mm (1.0 in).
Wettest day (Rx1day) at Leo 6 SW by year
YearWettest day (Rx1day)
193019.3 mm (0.8 in)
193127.9 mm (1.1 in)
193220.6 mm (0.8 in)
193327.2 mm (1.1 in)
193413.7 mm (0.5 in)
193519.8 mm (0.8 in)
193622.9 mm (0.9 in)
193744.5 mm (1.8 in)
193826.7 mm (1.1 in)
193925.4 mm (1.0 in)
194024.6 mm (1.0 in)
194132.0 mm (1.3 in)
194240.6 mm (1.6 in)
194321.8 mm (0.9 in)
194420.3 mm (0.8 in)
194516.8 mm (0.7 in)
194660.2 mm (2.4 in)
194725.9 mm (1.0 in)
194824.6 mm (1.0 in)
194916.3 mm (0.6 in)
195036.1 mm (1.4 in)
195116.3 mm (0.6 in)
195221.6 mm (0.9 in)
195327.4 mm (1.1 in)
195419.6 mm (0.8 in)
195520.1 mm (0.8 in)
195637.8 mm (1.5 in)
195719.1 mm (0.8 in)
195818.0 mm (0.7 in)
195915.2 mm (0.6 in)
196020.6 mm (0.8 in)
196112.7 mm (0.5 in)
196255.4 mm (2.2 in)
196318.8 mm (0.7 in)
196418.8 mm (0.7 in)
196554.1 mm (2.1 in)
196624.1 mm (0.9 in)
196735.3 mm (1.4 in)
196816.3 mm (0.6 in)
196928.2 mm (1.1 in)
197032.0 mm (1.3 in)
197128.2 mm (1.1 in)
197231.2 mm (1.2 in)
197348.5 mm (1.9 in)
197429.0 mm (1.1 in)
197529.2 mm (1.1 in)
197617.8 mm (0.7 in)
197728.4 mm (1.1 in)
197826.7 mm (1.1 in)
197929.5 mm (1.2 in)
198030.2 mm (1.2 in)
198117.8 mm (0.7 in)
198221.3 mm (0.8 in)
198336.8 mm (1.4 in)
198418.3 mm (0.7 in)
198554.1 mm (2.1 in)
198630.5 mm (1.2 in)
198715.5 mm (0.6 in)
198825.1 mm (1.0 in)
198917.3 mm (0.7 in)
199021.8 mm (0.9 in)
199137.8 mm (1.5 in)
199231.5 mm (1.2 in)
199325.7 mm (1.0 in)
199441.4 mm (1.6 in)
199539.4 mm (1.6 in)
199619.6 mm (0.8 in)
199716.3 mm (0.6 in)
199826.9 mm (1.1 in)
199940.6 mm (1.6 in)
200032.3 mm (1.3 in)
200117.3 mm (0.7 in)
200219.3 mm (0.8 in)
200323.6 mm (0.9 in)
200421.3 mm (0.8 in)
200519.1 mm (0.8 in)
200620.8 mm (0.8 in)
200740.1 mm (1.6 in)
200843.7 mm (1.7 in)
200922.9 mm (0.9 in)
201019.1 mm (0.8 in)
201131.5 mm (1.2 in)
201214.0 mm (0.6 in)
201333.8 mm (1.3 in)
201414.7 mm (0.6 in)
201520.3 mm (0.8 in)
201628.4 mm (1.1 in)
201719.6 mm (0.8 in)
201840.9 mm (1.6 in)
201925.7 mm (1.0 in)
202019.8 mm (0.8 in)
202122.9 mm (0.9 in)
202216.8 mm (0.7 in)
202327.9 mm (1.1 in)
202416.3 mm (0.6 in)
202525.4 mm (1.0 in)
202639.1 mm (1.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Leo 6 SW by year The wettest five days of the year at Leo 6 SW, 1930 to 2026. The record is 86.1 mm (3.4 in) in 1995, marked on the chart; the median year is 37.3 mm (1.5 in). 02040608010019401960198020002020Record: 86.1 mm (3.4 in) in 1995
The wettest five days of the year at Leo 6 SW, 1930 to 2026. The record is 86.1 mm (3.4 in) in 1995, marked on the chart; the median year is 37.3 mm (1.5 in).
Wettest five days (Rx5day) at Leo 6 SW by year
YearWettest five days (Rx5day)
193031.9 mm (1.3 in)
193137.1 mm (1.5 in)
193224.2 mm (1.0 in)
193344.7 mm (1.8 in)
193419.1 mm (0.8 in)
193525.6 mm (1.0 in)
193639.1 mm (1.5 in)
193779.3 mm (3.1 in)
193832.0 mm (1.3 in)
193926.9 mm (1.1 in)
194019.3 mm (0.8 in)
194146.2 mm (1.8 in)
194259.9 mm (2.4 in)
194328.9 mm (1.1 in)
194428.7 mm (1.1 in)
194525.8 mm (1.0 in)
194660.2 mm (2.4 in)
194736.6 mm (1.4 in)
194840.6 mm (1.6 in)
194927.5 mm (1.1 in)
195044.0 mm (1.7 in)
195134.0 mm (1.3 in)
195230.3 mm (1.2 in)
195341.4 mm (1.6 in)
195429.8 mm (1.2 in)
195520.1 mm (0.8 in)
195648.0 mm (1.9 in)
195737.3 mm (1.5 in)
195822.8 mm (0.9 in)
195930.6 mm (1.2 in)
196025.5 mm (1.0 in)
196125.2 mm (1.0 in)
196255.4 mm (2.2 in)
196332.5 mm (1.3 in)
196439.4 mm (1.6 in)
196554.1 mm (2.1 in)
196631.5 mm (1.2 in)
196755.6 mm (2.2 in)
196823.8 mm (0.9 in)
196942.5 mm (1.7 in)
197045.7 mm (1.8 in)
197138.4 mm (1.5 in)
197245.2 mm (1.8 in)
197358.7 mm (2.3 in)
197435.4 mm (1.4 in)
197544.8 mm (1.8 in)
197623.9 mm (0.9 in)
197746.2 mm (1.8 in)
197855.6 mm (2.2 in)
197944.0 mm (1.7 in)
198052.8 mm (2.1 in)
198130.2 mm (1.2 in)
198235.8 mm (1.4 in)
198340.6 mm (1.6 in)
198437.3 mm (1.5 in)
198584.9 mm (3.3 in)
198630.5 mm (1.2 in)
198727.1 mm (1.1 in)
198844.5 mm (1.8 in)
198928.2 mm (1.1 in)
199027.4 mm (1.1 in)
199159.5 mm (2.3 in)
199254.4 mm (2.1 in)
199328.5 mm (1.1 in)
199482.8 mm (3.3 in)
199586.1 mm (3.4 in)
199644.4 mm (1.7 in)
199730.5 mm (1.2 in)
199848.5 mm (1.9 in)
199947.5 mm (1.9 in)
200054.7 mm (2.2 in)
200123.1 mm (0.9 in)
200222.7 mm (0.9 in)
200346.8 mm (1.8 in)
200430.2 mm (1.2 in)
200541.5 mm (1.6 in)
200627.0 mm (1.1 in)
200753.1 mm (2.1 in)
200863.2 mm (2.5 in)
200940.5 mm (1.6 in)
201055.2 mm (2.2 in)
201132.5 mm (1.3 in)
201217.6 mm (0.7 in)
201337.3 mm (1.5 in)
201424.1 mm (0.9 in)
201542.9 mm (1.7 in)
201641.7 mm (1.6 in)
201723.7 mm (0.9 in)
201863.3 mm (2.5 in)
201931.5 mm (1.2 in)
202019.9 mm (0.8 in)
202138.1 mm (1.5 in)
202233.8 mm (1.3 in)
202335.6 mm (1.4 in)
202428.2 mm (1.1 in)
202544.9 mm (1.8 in)
202641.4 mm (1.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Leo 6 SW by year The longest dry spell of the year at Leo 6 SW, 1930 to 2026. The record is 63 days in 1969, marked on the chart; the median year is 35 days. 02040608019401960198020002020Record: 63 days in 1969
The longest dry spell of the year at Leo 6 SW, 1930 to 2026. The record is 63 days in 1969, marked on the chart; the median year is 35 days.
Longest dry spell (CDD) at Leo 6 SW by year
YearLongest dry spell (CDD)
19302 days
193136 days
193249 days
193346 days
193455 days
193524 days
193631 days
193731 days
193832 days
193954 days
194037 days
194119 days
194241 days
194340 days
194454 days
194534 days
194626 days
194723 days
194835 days
194933 days
195052 days
195124 days
195237 days
195342 days
195437 days
195534 days
195654 days
195737 days
195843 days
195956 days
196027 days
196130 days
196241 days
196339 days
196448 days
196529 days
196628 days
196756 days
196831 days
196963 days
197034 days
197146 days
197228 days
197327 days
197433 days
197528 days
197637 days
197741 days
197833 days
197956 days
198033 days
198145 days
198227 days
198324 days
198418 days
198528 days
198635 days
198747 days
198851 days
198944 days
199030 days
199123 days
199235 days
199333 days
199445 days
199533 days
199648 days
199730 days
199830 days
199938 days
200038 days
200131 days
200235 days
200329 days
200435 days
200539 days
200627 days
200727 days
200833 days
200942 days
201038 days
201121 days
201246 days
201343 days
201428 days
201547 days
201645 days
201738 days
201833 days
201938 days
202046 days
202143 days
202221 days
202337 days
202438 days
202529 days
202651 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

29 years with a frost

Across 29 years with a frost, the median last spring frost at Leo 6 SW falls on 1 June and the median first autumn frost on 18 September, which leaves a median of 106 days between them.

Fitted over all years, the growing season changes by +4.0 days per decade at this station.

Frost dates and growing season at Leo 6 SW
MeasureMedian, all yearsEarliest periodRecent period (1931 to 2025)Recent against earliestFitted trend
Last spring frost1 Junen/a1 Junen/a-1.1 days per decade
First autumn frost18 Septembern/a18 Septembern/a+2.9 days per decade
Growing days106 daysn/a106 daysn/a+4.0 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

85 years, 1932 to 2025

A day with at least 23.8 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 66.2 mm (2.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Leo 6 SW: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years23.8 mm (0.9 in)
5 years32.7 mm (1.3 in)
10 years39.5 mm (1.6 in)
25 years49.2 mm (1.9 in)
50 years57.3 mm (2.3 in)
100 years66.2 mm (2.6 in)Longer than the 85 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, 85 years of values from 1932 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: 60.2 mm (2.4 in) in 1946; 55.4 mm (2.2 in) in 1962; 54.1 mm (2.1 in) in 1965.

Download the Data

  • Data for Leo 6 SW standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Leo 6 SW 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).