Built 2026-10-19 (19 October 2026)

Willow Creek Pass Weather Records (USS0006J05S)

Record envelope, standing records and threshold days for Willow Creek Pass (USS0006J05S), Colorado, United States, with 49 years of record.

Key Facts for Willow Creek Pass

  • Willow Creek Pass (USS0006J05S) is a weather station in Colorado, United States at 40.35 latitude and -106.09 longitude, 2,908 m (9,540 ft) above sea level.
  • The station reports from 1978 to 2026, 49 years of record.
  • 1,464 records set at Willow Creek Pass still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Willow Creek Pass set a daily record high minimum temperature of 0.3 C (32.5 F) on 13 October 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, 40.35 latitude, -106.09 longitude.
  • Elevation: 2,908 m (9,540 ft).
  • Period of record: 1978 to 2026, 49 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

26 days at or beyond a record
Daily record high and record low at Willow Creek Pass, with 2026 drawn through them The band shows the record high and record low for each calendar day at Willow Creek Pass. The lines show the 2026 daily maximum and minimum. 26 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 Willow Creek Pass. The lines show the 2026 daily maximum and minimum. 26 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Willow Creek Pass, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan9.7 C (49.5 F)-34.6 C (-30.3 F)3.7 C (38.7 F)-31.0 C (-23.8 F)
Feb10.9 C (51.6 F)-37.3 C (-35.1 F)7.4 C (45.3 F)-22.0 C (-7.6 F)
Mar18.3 C (64.9 F)-29.4 C (-20.9 F)18.3 C (64.9 F)-20.5 C (-4.9 F)
Apr19.5 C (67.1 F)-26.7 C (-16.1 F)16.8 C (62.2 F)-17.6 C (0.3 F)
May24.6 C (76.3 F)-18.1 C (-0.6 F)21.9 C (71.4 F)-11.8 C (10.8 F)
Jun28.6 C (83.5 F)-8.2 C (17.2 F)24.8 C (76.6 F)-3.3 C (26.1 F)
Jul29.6 C (85.3 F)-5.3 C (22.5 F)29.2 C (84.6 F)-0.5 C (31.1 F)
Aug27.5 C (81.5 F)-7.0 C (19.4 F)27.5 C (81.5 F)1.9 C (35.4 F)
Sep26.0 C (78.8 F)-14.2 C (6.4 F)24.4 C (75.9 F)-2.5 C (27.5 F)
Oct20.3 C (68.5 F)-25.4 C (-13.7 F)19.4 C (66.9 F)-2.8 C (27.0 F)
Nov13.3 C (55.9 F)-31.2 C (-24.2 F)n/an/a
Dec10.2 C (50.4 F)-36.5 C (-33.7 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Willow Creek Pass by the year they were set 1,464 records at Willow Creek Pass still stand. 2025 holds the most, with 52. 02040601986: 61987: 431988: 391989: 511990: 401991: 261992: 341993: 431994: 181995: 401996: 381997: 391998: 231999: 462000: 342001: 262002: 372003: 422004: 332005: 392006: 342007: 242008: 362009: 372010: 432011: 242012: 312013: 492014: 342015: 342016: 282017: 382018: 422019: 342020: 442021: 422022: 382023: 332024: 232025: 522026: 47198619911996200120062011201620212026
1,464 records at Willow Creek Pass still stand. 2025 holds the most, with 52.
Standing records at Willow Creek Pass by the year they were set
Year setStanding records
19866
198743
198839
198951
199040
199126
199234
199343
199418
199540
199638
199739
199823
199946
200034
200126
200237
200342
200433
200539
200634
200724
200836
200937
201043
201124
201231
201349
201434
201534
201628
201738
201842
201934
202044
202142
202238
202333
202423
202552
202647

Wettest Day of Each Month

Jun: 48.3 mm (1.9 in)
Record daily precipitation for each month at Willow Creek Pass The wettest day on record for each calendar month at Willow Creek Pass. The most was 48.3 mm (1.9 in) on 4 June 2005. 0204060 Jan: 38.1 mm (1.5 in), 30 January 1980 Jan Feb: 40.6 mm (1.6 in), 19 February 1986 Feb Mar: 33.0 mm (1.3 in), 5 March 1983 Mar Apr: 43.2 mm (1.7 in), 23 April 2003 Apr May: 38.1 mm (1.5 in), 8 May 1995 May Jun: 48.3 mm (1.9 in), 4 June 2005 Jun Jul: 35.6 mm (1.4 in), 24 July 1989 Jul Aug: 43.2 mm (1.7 in), 24 August 2023 Aug Sep: 35.6 mm (1.4 in), 21 September 2004 Sep Oct: 38.1 mm (1.5 in), 9 October 1982 Oct Nov: 25.4 mm (1.0 in), 8 November 1985 Nov Dec: 27.9 mm (1.1 in), 16 December 2016 Dec
The wettest day on record for each calendar month at Willow Creek Pass. The most was 48.3 mm (1.9 in) on 4 June 2005.
Record daily precipitation for each month at Willow Creek Pass
MonthRecord daily precipitation (mm)Date
Jan38.1 mm (1.5 in)30 January 1980
Feb40.6 mm (1.6 in)19 February 1986
Mar33.0 mm (1.3 in)5 March 1983
Apr43.2 mm (1.7 in)23 April 2003
May38.1 mm (1.5 in)8 May 1995
Jun48.3 mm (1.9 in)4 June 2005
Jul35.6 mm (1.4 in)24 July 1989
Aug43.2 mm (1.7 in)24 August 2023
Sep35.6 mm (1.4 in)21 September 2004
Oct38.1 mm (1.5 in)9 October 1982
Nov25.4 mm (1.0 in)8 November 1985
Dec27.9 mm (1.1 in)16 December 2016

Period of Record Coverage

1986 to 2026
Days with data per year at Willow Creek Pass 41 years of record at Willow Creek Pass, 1986 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1986, 2016, 2026. 1986: 122 of 365 days1987: 359 of 365 days1988: 362 of 366 days1989: 357 of 365 days1990: 357 of 365 days1991: 362 of 365 days1992: 358 of 366 days1993: 347 of 365 days1994: 337 of 365 days1995: 364 of 365 days1996: 365 of 366 days1997: 363 of 365 days1998: 364 of 365 days1999: 363 of 365 days2000: 365 of 366 days2001: 365 of 365 days2002: 364 of 365 days2003: 365 of 365 days2004: 365 of 366 days2005: 365 of 365 days2006: 363 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 364 of 365 days2016: 329 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 363 of 365 days2022: 362 of 365 days2023: 363 of 365 days2024: 364 of 366 days2025: 364 of 365 days2026: 286 of 365 days1990200020102020
41 years of record at Willow Creek Pass, 1986 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1986, 2016, 2026.
Days with data per year at Willow Creek Pass
YearDays with dataShare of yearComplete
198612233%No
198735998%Yes
198836299%Yes
198935798%Yes
199035798%Yes
199136299%Yes
199235898%Yes
199334795%Yes
199433792%Yes
1995364100%Yes
1996365100%Yes
199736399%Yes
1998364100%Yes
199936399%Yes
2000365100%Yes
2001365100%Yes
2002364100%Yes
2003365100%Yes
2004365100%Yes
2005365100%Yes
200636399%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015364100%Yes
201632990%No
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
202136399%Yes
202236299%Yes
202336399%Yes
202436499%Yes
2025364100%Yes
202628678%No

Latest Records

20
Latest records at Willow Creek Pass
DateStationRecordValueBeat old record byOld record stoodSignificance
13 October 2026Willow Creek Pass, USdaily high min (Provisional)0.3 C (32.5 F)0.2 C (0.4 F)39 years15 of 100 (Routine)
12 October 2026Willow Creek Pass, USdaily high min (Provisional)2.8 C (37.0 F)4.4 C (7.9 F)32 years22 of 100 (Routine)
11 October 2026Willow Creek Pass, USdaily high max (Provisional)18.7 C (65.7 F)0.5 C (0.9 F)29 years12 of 100 (Routine)
7 October 2026Willow Creek Pass, USdaily high min (Provisional)-0.5 C (31.1 F)0.3 C (0.5 F)20 years10 of 100 (Routine)
5 October 2026Willow Creek Pass, USdaily high max (Provisional)18.9 C (66.0 F)1.0 C (1.8 F)4 years6 of 100 (Routine)
24 September 2026Willow Creek Pass, USdaily high min (Provisional)3.2 C (37.8 F)2.3 C (4.1 F)27 years19 of 100 (Routine)
23 September 2026Willow Creek Pass, USdaily high min (Provisional)3.2 C (37.8 F)1.7 C (3.1 F)12 years12 of 100 (Routine)
17 September 2026Willow Creek Pass, USmonthly high min (Tie, Provisional)7.6 C (45.7 F)tie13 years4 of 100 (Routine)
16 September 2026Willow Creek Pass, USdaily high min (Provisional)5.6 C (42.1 F)1.9 C (3.4 F)36 years20 of 100 (Routine)
14 September 2026Willow Creek Pass, USdaily high min (Provisional)3.3 C (37.9 F)0.1 C (0.2 F)12 years7 of 100 (Routine)
13 September 2026Willow Creek Pass, USdaily high min (Provisional)3.2 C (37.8 F)0.6 C (1.1 F)12 years8 of 100 (Routine)
7 September 2026Willow Creek Pass, USdaily high min (Provisional)5.9 C (42.6 F)0.8 C (1.4 F)35 years16 of 100 (Routine)
30 August 2026Willow Creek Pass, USdaily rain (Provisional)12.7 mm (0.5 in)7.6 mm (0.30 in)24 years20 of 100 (Routine)
30 August 2026Willow Creek Pass, USdaily low max (Provisional)11.6 C (52.9 F)1.0 C (1.8 F)32 years16 of 100 (Routine)
30 August 2026Willow Creek Pass, USdaily high min (Provisional)6.0 C (42.8 F)0.9 C (1.6 F)8 years9 of 100 (Routine)
29 August 2026Willow Creek Pass, USdaily high min (Provisional)7.0 C (44.6 F)3.4 C (6.1 F)31 years27 of 100 (Routine)
28 August 2026Willow Creek Pass, USdaily high max (Provisional)23.7 C (74.7 F)0.3 C (0.5 F)4 years5 of 100 (Routine)
14 August 2026Willow Creek Pass, USdaily high min6.6 C (43.9 F)0.7 C (1.3 F)24 years14 of 100 (Routine)
10 August 2026Willow Creek Pass, USdaily high min8.3 C (46.9 F)1.2 C (2.2 F)13 years13 of 100 (Routine)
8 August 2026Willow Creek Pass, USdaily high max25.9 C (78.6 F)1.2 C (2.2 F)31 years16 of 100 (Routine)

Climate Trend

37 complete years, 1988 to 2025
Annual mean temperature at Willow Creek Pass as warming stripes, 1988 to 2025 One stripe for each of 37 complete years at Willow Creek Pass, 1988 to 2025. Blue stripes are years cooler than the station's own mean of 0.3 C (32.5 F); red stripes are warmer. The coolest year was 1993, at -1.3 C (29.7 F), and the warmest was 2025, at 1.7 C (35.0 F). The strongest colour marks a difference of 1.6 C (2.9 F). 1988: -0.2 C, -0.6 C from the station mean1989: 0.0 C, -0.3 C from the station mean1990: 0.0 C, -0.3 C from the station mean1991: -0.7 C, -1.0 C from the station mean1992: -0.4 C, -0.7 C from the station mean1993: -1.3 C, -1.6 C from the station mean1994: 0.2 C, -0.1 C from the station mean1995: -0.1 C, -0.4 C from the station mean1996: -0.2 C, -0.5 C from the station mean1997: -0.5 C, -0.8 C from the station mean1998: 0.2 C, -0.1 C from the station mean1999: 0.2 C, -0.1 C from the station mean2000: 0.5 C, +0.2 C from the station mean2001: 0.5 C, +0.2 C from the station mean2002: -0.1 C, -0.4 C from the station mean2003: 0.6 C, +0.3 C from the station mean2004: 0.0 C, -0.3 C from the station mean2005: 0.2 C, -0.1 C from the station mean2006: 0.1 C, -0.2 C from the station mean2007: 0.8 C, +0.5 C from the station mean2008: -0.6 C, -1.0 C from the station mean2009: 0.0 C, -0.3 C from the station mean2010: 0.3 C, 0.0 C from the station mean2011: -0.1 C, -0.4 C from the station mean2012: 1.5 C, +1.2 C from the station mean2013: -0.2 C, -0.5 C from the station mean2014: 0.6 C, +0.3 C from the station mean2015: 1.4 C, +1.1 C from the station mean2017: 1.6 C, +1.3 C from the station mean2018: 1.1 C, +0.8 C from the station mean2019: 0.2 C, -0.2 C from the station mean2020: 1.0 C, +0.7 C from the station mean2021: 1.4 C, +1.1 C from the station mean2022: 0.2 C, -0.2 C from the station mean2023: 0.3 C, 0.0 C from the station mean2024: 1.3 C, +0.9 C from the station mean2025: 1.7 C, +1.4 C from the station mean19881995200020052010201520202025
One stripe for each of 37 complete years at Willow Creek Pass, 1988 to 2025. Blue stripes are years cooler than the station's own mean of 0.3 C (32.5 F); red stripes are warmer. The coolest year was 1993, at -1.3 C (29.7 F), and the warmest was 2025, at 1.7 C (35.0 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Willow Creek Pass as warming stripes, 1988 to 2025
YearAnnual mean temperatureDifference from the station mean
1988-0.2 C-0.55 C
19890.0 C-0.30 C
19900.0 C-0.30 C
1991-0.7 C-1.01 C
1992-0.4 C-0.66 C
1993-1.3 C-1.58 C
19940.2 C-0.13 C
1995-0.1 C-0.40 C
1996-0.2 C-0.48 C
1997-0.5 C-0.84 C
19980.2 C-0.11 C
19990.2 C-0.07 C
20000.5 C+0.19 C
20010.5 C+0.22 C
2002-0.1 C-0.41 C
20030.6 C+0.30 C
20040.0 C-0.27 C
20050.2 C-0.08 C
20060.1 C-0.21 C
20070.8 C+0.47 C
2008-0.6 C-0.95 C
20090.0 C-0.30 C
20100.3 C-0.03 C
2011-0.1 C-0.37 C
20121.5 C+1.24 C
2013-0.2 C-0.46 C
20140.6 C+0.26 C
20151.4 C+1.13 C
20171.6 C+1.29 C
20181.1 C+0.82 C
20190.2 C-0.15 C
20201.0 C+0.66 C
20211.4 C+1.08 C
20220.2 C-0.15 C
20230.3 C0.00 C
20241.3 C+0.95 C
20251.7 C+1.36 C

The annual mean temperature here has risen by 0.4 C (0.3 to 0.6) per decade over 1988 to 2025. In Fahrenheit: 0.7 F (0.5 to 1.0) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Willow Creek Pass
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.4 C (0.3 to 0.6) per decade0.7 F (0.5 to 1.0) per decade1988 to 202537Rise
Mean daily maximum0.3 C (0.2 to 0.5) per decade0.6 F (0.3 to 1.0) per decade1988 to 202537Rise
Mean daily minimum0.5 C (0.3 to 0.6) per decade0.9 F (0.6 to 1.1) per decade1988 to 202537Rise

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

1978 to 2026
Yearly extremes at Willow Creek Pass: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)29.6 C (85.3 F)198926.7 C (80.1 F)41
Coldest night (TNn)-37.3 C (-35.1 F)1989-30.9 C (-23.6 F)41
Wettest day (Rx1day)48.3 mm (1.9 in)200527.9 mm (1.1 in)49
Wettest five days (Rx5day)104.3 mm (4.1 in)200548.2 mm (1.9 in)49
Longest dry spell (CDD)87 days198020 days49

Hottest day (TXx)

Hottest day (TXx) at Willow Creek Pass by year The hottest day of the year at Willow Creek Pass, 1978 to 2026. The record is 29.6 C (85.3 F) in 1989, marked on the chart; the median year is 26.7 C (80.1 F). 2022.52527.53019801990200020102020Record: 29.6 C (85.3 F) in 1989
The hottest day of the year at Willow Creek Pass, 1978 to 2026. The record is 29.6 C (85.3 F) in 1989, marked on the chart; the median year is 26.7 C (80.1 F).
Hottest day (TXx) at Willow Creek Pass by year
YearHottest day (TXx)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
198621.0 C (69.8 F)
198728.8 C (83.8 F)
198827.4 C (81.3 F)
198929.6 C (85.3 F)
199028.0 C (82.4 F)
199125.5 C (77.9 F)
199223.9 C (75.0 F)
199324.5 C (76.1 F)
199425.0 C (77.0 F)
199526.6 C (79.9 F)
199623.9 C (75.0 F)
199724.5 C (76.1 F)
199827.2 C (81.0 F)
199925.4 C (77.7 F)
200026.1 C (79.0 F)
200126.9 C (80.4 F)
200227.5 C (81.5 F)
200327.5 C (81.5 F)
200426.3 C (79.3 F)
200527.4 C (81.3 F)
200627.7 C (81.9 F)
200726.7 C (80.1 F)
200827.1 C (80.8 F)
200925.2 C (77.4 F)
201025.1 C (77.2 F)
201125.0 C (77.0 F)
201228.6 C (83.5 F)
201327.5 C (81.5 F)
201426.1 C (79.0 F)
201525.8 C (78.4 F)
201627.0 C (80.6 F)
201725.8 C (78.4 F)
201827.4 C (81.3 F)
201925.6 C (78.1 F)
202026.1 C (79.0 F)
202127.1 C (80.8 F)
202226.4 C (79.5 F)
202327.5 C (81.5 F)
202426.7 C (80.1 F)
202527.3 C (81.1 F)
202629.2 C (84.6 F)

Coldest night (TNn)

Coldest night (TNn) at Willow Creek Pass by year The coldest night of the year at Willow Creek Pass, 1978 to 2026. The record is -37.3 C (-35.1 F) in 1989, marked on the chart; the median year is -30.9 C (-23.6 F). -40-35-30-2519801990200020102020Record: -37.3 C (-35.1 F) in 1989
The coldest night of the year at Willow Creek Pass, 1978 to 2026. The record is -37.3 C (-35.1 F) in 1989, marked on the chart; the median year is -30.9 C (-23.6 F).
Coldest night (TNn) at Willow Creek Pass by year
YearColdest night (TNn)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986-32.2 C (-26.0 F)
1987-30.3 C (-22.5 F)
1988-32.8 C (-27.0 F)
1989-37.3 C (-35.1 F)
1990-36.5 C (-33.7 F)
1991-30.4 C (-22.7 F)
1992-29.0 C (-20.2 F)
1993-29.3 C (-20.7 F)
1994-30.3 C (-22.5 F)
1995-30.6 C (-23.1 F)
1996-32.6 C (-26.7 F)
1997-28.9 C (-20.0 F)
1998-30.9 C (-23.6 F)
1999-28.0 C (-18.4 F)
2000-27.5 C (-17.5 F)
2001-28.9 C (-20.0 F)
2002-32.0 C (-25.6 F)
2003-30.9 C (-23.6 F)
2004-31.4 C (-24.5 F)
2005-29.4 C (-20.9 F)
2006-32.2 C (-26.0 F)
2007-31.2 C (-24.2 F)
2008-33.2 C (-27.8 F)
2009-30.1 C (-22.2 F)
2010-31.2 C (-24.2 F)
2011-31.2 C (-24.2 F)
2012-30.6 C (-23.1 F)
2013-32.3 C (-26.1 F)
2014-28.6 C (-19.5 F)
2015-27.5 C (-17.5 F)
2016-30.9 C (-23.6 F)
2017-31.9 C (-25.4 F)
2018-26.8 C (-16.2 F)
2019-28.5 C (-19.3 F)
2020-31.4 C (-24.5 F)
2021-27.2 C (-17.0 F)
2022-31.1 C (-24.0 F)
2023-30.4 C (-22.7 F)
2024-33.0 C (-27.4 F)
2025-34.6 C (-30.3 F)
2026-31.0 C (-23.8 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Willow Creek Pass by year The wettest day of the year at Willow Creek Pass, 1978 to 2026. The record is 48.3 mm (1.9 in) in 2005, marked on the chart; the median year is 27.9 mm (1.1 in). 102030405019801990200020102020Record: 48.3 mm (1.9 in) in 2005
The wettest day of the year at Willow Creek Pass, 1978 to 2026. The record is 48.3 mm (1.9 in) in 2005, marked on the chart; the median year is 27.9 mm (1.1 in).
Wettest day (Rx1day) at Willow Creek Pass by year
YearWettest day (Rx1day)
197825.4 mm (1.0 in)
197930.5 mm (1.2 in)
198038.1 mm (1.5 in)
198117.8 mm (0.7 in)
198238.1 mm (1.5 in)
198333.0 mm (1.3 in)
198427.9 mm (1.1 in)
198525.4 mm (1.0 in)
198640.6 mm (1.6 in)
198722.9 mm (0.9 in)
198822.9 mm (0.9 in)
198935.6 mm (1.4 in)
199022.9 mm (0.9 in)
199127.9 mm (1.1 in)
199220.3 mm (0.8 in)
199325.4 mm (1.0 in)
199412.7 mm (0.5 in)
199538.1 mm (1.5 in)
199620.3 mm (0.8 in)
199733.0 mm (1.3 in)
199817.8 mm (0.7 in)
199920.3 mm (0.8 in)
200020.3 mm (0.8 in)
200127.9 mm (1.1 in)
200215.2 mm (0.6 in)
200343.2 mm (1.7 in)
200435.6 mm (1.4 in)
200548.3 mm (1.9 in)
200617.8 mm (0.7 in)
200722.9 mm (0.9 in)
200825.4 mm (1.0 in)
200917.8 mm (0.7 in)
201033.0 mm (1.3 in)
201130.5 mm (1.2 in)
201225.4 mm (1.0 in)
201333.0 mm (1.3 in)
201435.6 mm (1.4 in)
201527.9 mm (1.1 in)
201633.0 mm (1.3 in)
201733.0 mm (1.3 in)
201822.9 mm (0.9 in)
201935.6 mm (1.4 in)
202030.5 mm (1.2 in)
202122.9 mm (0.9 in)
202227.9 mm (1.1 in)
202343.2 mm (1.7 in)
202422.9 mm (0.9 in)
202515.2 mm (0.6 in)
202635.6 mm (1.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Willow Creek Pass by year The wettest five days of the year at Willow Creek Pass, 1978 to 2026. The record is 104.3 mm (4.1 in) in 2005, marked on the chart; the median year is 48.2 mm (1.9 in). 2040608010012019801990200020102020Record: 104.3 mm (4.1 in) in 2005
The wettest five days of the year at Willow Creek Pass, 1978 to 2026. The record is 104.3 mm (4.1 in) in 2005, marked on the chart; the median year is 48.2 mm (1.9 in).
Wettest five days (Rx5day) at Willow Creek Pass by year
YearWettest five days (Rx5day)
197861.0 mm (2.4 in)
197953.3 mm (2.1 in)
198038.1 mm (1.5 in)
198135.6 mm (1.4 in)
198258.5 mm (2.3 in)
198350.8 mm (2.0 in)
198443.2 mm (1.7 in)
198561.0 mm (2.4 in)
198678.8 mm (3.1 in)
198735.5 mm (1.4 in)
198838.1 mm (1.5 in)
198963.5 mm (2.5 in)
199043.2 mm (1.7 in)
199145.7 mm (1.8 in)
199250.7 mm (2.0 in)
199335.5 mm (1.4 in)
199438.1 mm (1.5 in)
199566.0 mm (2.6 in)
199645.7 mm (1.8 in)
199773.7 mm (2.9 in)
199838.1 mm (1.5 in)
199968.6 mm (2.7 in)
200048.3 mm (1.9 in)
200138.0 mm (1.5 in)
200238.1 mm (1.5 in)
200388.8 mm (3.5 in)
200476.2 mm (3.0 in)
2005104.3 mm (4.1 in)
200640.6 mm (1.6 in)
200738.1 mm (1.5 in)
200858.4 mm (2.3 in)
200938.0 mm (1.5 in)
201063.4 mm (2.5 in)
201153.3 mm (2.1 in)
201243.2 mm (1.7 in)
201381.3 mm (3.2 in)
201448.2 mm (1.9 in)
201548.2 mm (1.9 in)
201645.7 mm (1.8 in)
201783.8 mm (3.3 in)
201840.7 mm (1.6 in)
201955.9 mm (2.2 in)
202048.3 mm (1.9 in)
202158.5 mm (2.3 in)
202238.0 mm (1.5 in)
202363.4 mm (2.5 in)
202440.7 mm (1.6 in)
202538.1 mm (1.5 in)
202640.5 mm (1.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Willow Creek Pass by year The longest dry spell of the year at Willow Creek Pass, 1978 to 2026. The record is 87 days in 1980, marked on the chart; the median year is 20 days. 02040608010019801990200020102020Record: 87 days in 1980
The longest dry spell of the year at Willow Creek Pass, 1978 to 2026. The record is 87 days in 1980, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Willow Creek Pass by year
YearLongest dry spell (CDD)
197818 days
197943 days
198087 days
198120 days
198215 days
198340 days
198412 days
198524 days
198627 days
198744 days
198820 days
198926 days
199019 days
199122 days
199219 days
199317 days
199410 days
199514 days
199613 days
199718 days
199823 days
199913 days
200014 days
200118 days
200222 days
200320 days
200421 days
200524 days
200625 days
200743 days
200830 days
200914 days
201016 days
201122 days
201236 days
201334 days
201422 days
201517 days
201618 days
201735 days
201844 days
201932 days
202029 days
202117 days
202216 days
202315 days
202420 days
202513 days
202626 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

37 years with a frost

Across 37 years with a frost, the median last spring frost at Willow Creek Pass falls on 28 June and the median first autumn frost on 6 July, which leaves a median of 14 days between them.

Fitted over all years, the growing season changes by +7.6 days per decade at this station.

Frost dates and growing season at Willow Creek Pass
MeasureMedian, all yearsEarliest periodRecent period (1995 to 2025)Recent against earliestFitted trend
Last spring frost28 Junen/a29 Junen/a+0.1 days per decade
First autumn frost6 Julyn/a12 Julyn/a+7.7 days per decade
Growing days14 daysn/a15 daysn/a+7.6 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

47 years, 1979 to 2025

A day with at least 27.5 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 49.7 mm (2.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Willow Creek Pass: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years27.5 mm (1.1 in)
5 years35.1 mm (1.4 in)
10 years39.3 mm (1.5 in)
25 years44.0 mm (1.7 in)
50 years47.0 mm (1.9 in)Longer than the 47 years of record
100 years49.7 mm (2.0 in)Longer than the 47 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, 47 years of values from 1979 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: 48.3 mm (1.9 in) in 2005; 43.2 mm (1.7 in) in 2003; 43.2 mm (1.7 in) in 2023.

Download the Data

  • Data for Willow Creek Pass standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Willow Creek Pass 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-17).