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Built 2026-10-18 (18 October 2026)

Grouse Creek Divide Weather Records (USS0049L14S)

Record envelope, standing records and threshold days for Grouse Creek Divide (USS0049L14S), Alaska, United States, with 39 years of record.

Key Facts for Grouse Creek Divide

  • Grouse Creek Divide (USS0049L14S) is a weather station in Alaska, United States at 60.26 latitude and -149.34 longitude, 213 m (700 ft) above sea level.
  • The station reports from 1988 to 2026, 39 years of record.
  • 1,464 records set at Grouse Creek Divide still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Grouse Creek Divide set a daily record precipitation of 27.9 mm (1.1 in) on 20 July 2026.

About the Station

  • Location: Alaska, United States, 60.26 latitude, -149.34 longitude.
  • Elevation: 213 m (700 ft).
  • Period of record: 1988 to 2026, 39 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

25 days at or beyond a record
Daily record high and record low at Grouse Creek Divide, with 2026 drawn through them The band shows the record high and record low for each calendar day at Grouse Creek Divide. The lines show the 2026 daily maximum and minimum. 25 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 Grouse Creek Divide. The lines show the 2026 daily maximum and minimum. 25 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Grouse Creek Divide, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan14.2 C (57.6 F)-28.4 C (-19.1 F)3.9 C (39.0 F)-24.4 C (-11.9 F)
Feb12.3 C (54.1 F)-31.0 C (-23.8 F)5.6 C (42.1 F)-22.2 C (-8.0 F)
Mar16.5 C (61.7 F)-25.2 C (-13.4 F)3.3 C (37.9 F)-23.3 C (-9.9 F)
Apr22.3 C (72.1 F)-19.7 C (-3.5 F)8.9 C (48.0 F)-12.2 C (10.0 F)
May30.8 C (87.4 F)-5.3 C (22.5 F)13.3 C (55.9 F)-2.2 C (28.0 F)
Jun32.4 C (90.3 F)-2.2 C (28.0 F)25.6 C (78.1 F)0.6 C (33.1 F)
Jul34.1 C (93.4 F)1.1 C (34.0 F)25.0 C (77.0 F)1.7 C (35.1 F)
Aug29.8 C (85.6 F)-1.1 C (30.0 F)23.9 C (75.0 F)2.2 C (36.0 F)
Sep25.9 C (78.6 F)-6.1 C (21.0 F)18.3 C (64.9 F)-2.2 C (28.0 F)
Oct17.0 C (62.6 F)-14.0 C (6.8 F)7.8 C (46.0 F)-2.8 C (27.0 F)
Nov10.1 C (50.2 F)-23.9 C (-11.0 F)n/an/a
Dec10.8 C (51.4 F)-25.0 C (-13.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Grouse Creek Divide by the year they were set 1,464 records at Grouse Creek Divide still stand. 2010 holds the most, with 174. 0501001502001997: 131998: 351999: 472000: 342001: 372002: 282003: 352004: 312005: 182006: 622007: 632008: 382009: 1012010: 1742011: 1542012: 1282013: 592014: 392015: 302016: 152017: 322018: 242019: 312020: 282021: 532022: 252023: 222024: 292025: 282026: 511997200020032006200920122015201820212024
1,464 records at Grouse Creek Divide still stand. 2010 holds the most, with 174.
Standing records at Grouse Creek Divide by the year they were set
Year setStanding records
199713
199835
199947
200034
200137
200228
200335
200431
200518
200662
200763
200838
2009101
2010174
2011154
2012128
201359
201439
201530
201615
201732
201824
201931
202028
202153
202225
202322
202429
202528
202651

All-Time Record Progression

1 new records
When Grouse Creek Divide set new all-time records 1 all-time records were set at Grouse Creek Divide between 30 October 2021 and 30 October 2021. Each dot is a new record. Record daily precipitation30 October 2021: Record daily precipitation 165.1 mm (6.5 in)
1 all-time records were set at Grouse Creek Divide between 30 October 2021 and 30 October 2021. Each dot is a new record.
When Grouse Creek Divide set new all-time records
DateKindDetail
2021-10-30Record daily precipitationRecord daily precipitation 165.1 mm (6.5 in)

Wettest Day of Each Month

Oct: 165.1 mm (6.5 in)
Record daily precipitation for each month at Grouse Creek Divide The wettest day on record for each calendar month at Grouse Creek Divide. The most was 165.1 mm (6.5 in) on 30 October 2021. 050100150200 Jan: 109.2 mm (4.3 in), 12 January 2025 Jan Feb: 76.2 mm (3.0 in), 4 February 2003 Feb Mar: 81.3 mm (3.2 in), 11 March 2014 Mar Apr: 61.0 mm (2.4 in), 19 April 2015 Apr May: 50.8 mm (2.0 in), 10 May 2019 May Jun: 58.4 mm (2.3 in), 17 June 2004 Jun Jul: 61.0 mm (2.4 in), 19 July 2026 Jul Aug: 91.4 mm (3.6 in), 25 August 1989 Aug Sep: 116.8 mm (4.6 in), 19 September 2011 Sep Oct: 165.1 mm (6.5 in), 30 October 2021 Oct Nov: 111.8 mm (4.4 in), 25 November 2015 Nov Dec: 147.3 mm (5.8 in), 1 December 2020 Dec
The wettest day on record for each calendar month at Grouse Creek Divide. The most was 165.1 mm (6.5 in) on 30 October 2021.
Record daily precipitation for each month at Grouse Creek Divide
MonthRecord daily precipitation (mm)Date
Jan109.2 mm (4.3 in)12 January 2025
Feb76.2 mm (3.0 in)4 February 2003
Mar81.3 mm (3.2 in)11 March 2014
Apr61.0 mm (2.4 in)19 April 2015
May50.8 mm (2.0 in)10 May 2019
Jun58.4 mm (2.3 in)17 June 2004
Jul61.0 mm (2.4 in)19 July 2026
Aug91.4 mm (3.6 in)25 August 1989
Sep116.8 mm (4.6 in)19 September 2011
Oct165.1 mm (6.5 in)30 October 2021
Nov111.8 mm (4.4 in)25 November 2015
Dec147.3 mm (5.8 in)1 December 2020

Period of Record Coverage

1997 to 2026
Days with data per year at Grouse Creek Divide 30 years of record at Grouse Creek Divide, 1997 to 2026. 13 years have data for under 90 percent of days and are left out of rankings: 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2005 and others. 1997: 124 of 365 days1998: 355 of 365 days1999: 262 of 365 days2000: 263 of 366 days2001: 281 of 365 days2002: 310 of 365 days2003: 313 of 365 days2004: 318 of 366 days2005: 323 of 365 days2006: 324 of 365 days2007: 354 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 358 of 366 days2013: 364 of 365 days2014: 361 of 365 days2015: 259 of 365 days2016: 303 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 364 of 365 days2020: 366 of 366 days2021: 351 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 361 of 366 days2025: 312 of 365 days2026: 282 of 365 days200020052010201520202025
30 years of record at Grouse Creek Divide, 1997 to 2026. 13 years have data for under 90 percent of days and are left out of rankings: 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2005 and others.
Days with data per year at Grouse Creek Divide
YearDays with dataShare of yearComplete
199712434%No
199835597%Yes
199926272%No
200026372%No
200128177%No
200231085%No
200331386%No
200431887%No
200532388%No
200632489%No
200735497%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
201235898%Yes
2013364100%Yes
201436199%Yes
201525971%No
201630383%No
2017365100%Yes
2018365100%Yes
2019364100%Yes
2020366100%Yes
202135196%Yes
2022365100%Yes
2023365100%Yes
202436199%Yes
202531285%No
202628277%No

Latest Records

20
Latest records at Grouse Creek Divide
DateStationRecordValueBeat old record byOld record stoodSignificance
20 July 2026Grouse Creek Divide, USdaily rain27.9 mm (1.1 in)22.8 mm (0.9 in)36 years52 of 100 (Notable)
19 July 2026Grouse Creek Divide, USmonthly rain61.0 mm (2.4 in)20.4 mm (0.8 in)3 years47 of 100 (Notable)
14 July 2026Grouse Creek Divide, USdaily rain10.2 mm (0.4 in)2.6 mm (0.10 in)8 years9 of 100 (Routine)
12 July 2026Grouse Creek Divide, USdaily rain22.9 mm (0.9 in)17.8 mm (0.7 in)36 years20 of 100 (Routine)
14 June 2026Grouse Creek Divide, USdaily rain17.8 mm (0.7 in)12.7 mm (0.5 in)36 years20 of 100 (Routine)
1 May 2026Grouse Creek Divide, USdaily rain25.4 mm (1.0 in)10.2 mm (0.4 in)4 years18 of 100 (Routine)
5 February 2026Grouse Creek Divide, USdaily rain22.9 mm (0.9 in)2.6 mm (0.10 in)20 years11 of 100 (Routine)
3 February 2026Grouse Creek Divide, USdaily rain33.0 mm (1.3 in)2.5 mm (0.10 in)26 years12 of 100 (Routine)
29 January 2026Grouse Creek Divide, USdaily rain40.6 mm (1.6 in)25.4 mm (1.0 in)6 years22 of 100 (Routine)
15 January 2026Grouse Creek Divide, USdaily rain (Tie)43.2 mm (1.7 in)tie11 years1 of 100 (Routine)
6 November 2025Grouse Creek Divide, USdaily rain (Tie)17.8 mm (0.7 in)tie32 years3 of 100 (Routine)
10 September 2025Grouse Creek Divide, USdaily rain38.1 mm (1.5 in)15.2 mm (0.6 in)30 years22 of 100 (Routine)
9 June 2025Grouse Creek Divide, USdaily rain (Tie)17.8 mm (0.7 in)tie19 years2 of 100 (Routine)
3 June 2025Grouse Creek Divide, USdaily rain38.1 mm (1.5 in)25.4 mm (1.0 in)10 years42 of 100 (Notable)
2 March 2025Grouse Creek Divide, USdaily rain (Tie)15.2 mm (0.6 in)tie15 years1 of 100 (Routine)
25 January 2025Grouse Creek Divide, USdaily rain35.6 mm (1.4 in)5.1 mm (0.20 in)36 years17 of 100 (Routine)
12 January 2025Grouse Creek Divide, USmonthly rain109.2 mm (4.3 in)25.4 mm (1.0 in)0 years33 of 100 (Routine)
11 January 2025Grouse Creek Divide, USdaily rain45.7 mm (1.8 in)20.3 mm (0.8 in)35 years29 of 100 (Routine)
6 January 2025Grouse Creek Divide, USmonthly rain83.8 mm (3.3 in)7.6 mm (0.30 in)23 years26 of 100 (Routine)
5 January 2025Grouse Creek Divide, USdaily rain33.0 mm (1.3 in)7.6 mm (0.30 in)13 years12 of 100 (Routine)

Climate Trend

20 complete years, 1998 to 2024
Annual mean temperature at Grouse Creek Divide as warming stripes, 1998 to 2024 One stripe for each of 20 complete years at Grouse Creek Divide, 1998 to 2024. Blue stripes are years cooler than the station's own mean of 3.6 C (38.4 F); red stripes are warmer. The coolest year was 2021, at 1.2 C (34.1 F), and the warmest was 2010, at 7.8 C (46.0 F). The strongest colour marks a difference of 4.2 C (7.6 F). 1998: 2.9 C, -0.7 C from the station mean2003: 3.3 C, -0.3 C from the station mean2004: 2.8 C, -0.7 C from the station mean2005: 3.4 C, -0.2 C from the station mean2007: 3.3 C, -0.3 C from the station mean2008: 4.3 C, +0.7 C from the station mean2009: 6.2 C, +2.6 C from the station mean2010: 7.8 C, +4.2 C from the station mean2011: 7.2 C, +3.6 C from the station mean2012: 4.9 C, +1.4 C from the station mean2013: 2.5 C, -1.0 C from the station mean2014: 3.6 C, 0.0 C from the station mean2017: 1.5 C, -2.0 C from the station mean2018: 3.1 C, -0.5 C from the station mean2019: 4.2 C, +0.6 C from the station mean2020: 1.7 C, -1.8 C from the station mean2021: 1.2 C, -2.4 C from the station mean2022: 3.0 C, -0.6 C from the station mean2023: 2.2 C, -1.3 C from the station mean2024: 2.3 C, -1.3 C from the station mean199820002005201020152020
One stripe for each of 20 complete years at Grouse Creek Divide, 1998 to 2024. Blue stripes are years cooler than the station's own mean of 3.6 C (38.4 F); red stripes are warmer. The coolest year was 2021, at 1.2 C (34.1 F), and the warmest was 2010, at 7.8 C (46.0 F). The strongest colour marks a difference of 4.2 C (7.6 F).
Annual mean temperature at Grouse Creek Divide as warming stripes, 1998 to 2024
YearAnnual mean temperatureDifference from the station mean
19982.9 C-0.67 C
20033.3 C-0.27 C
20042.8 C-0.74 C
20053.4 C-0.18 C
20073.3 C-0.28 C
20084.3 C+0.73 C
20096.2 C+2.60 C
20107.8 C+4.19 C
20117.2 C+3.64 C
20124.9 C+1.37 C
20132.5 C-1.02 C
20143.6 C+0.02 C
20171.5 C-2.03 C
20183.1 C-0.49 C
20194.2 C+0.63 C
20201.7 C-1.84 C
20211.2 C-2.39 C
20223.0 C-0.55 C
20232.2 C-1.34 C
20242.3 C-1.30 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

1988 to 2026
Yearly extremes at Grouse Creek Divide: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)34.1 C (93.4 F)200927.8 C (82.0 F)30
Coldest night (TNn)-31.0 C (-23.8 F)1999-23.3 C (-10.0 F)30
Wettest day (Rx1day)165.1 mm (6.5 in)202178.7 mm (3.1 in)39
Wettest five days (Rx5day)332.7 mm (13.1 in)2012167.6 mm (6.6 in)39
Longest dry spell (CDD)43 days200219 days39

Hottest day (TXx)

Hottest day (TXx) at Grouse Creek Divide by year The hottest day of the year at Grouse Creek Divide, 1988 to 2026. The record is 34.1 C (93.4 F) in 2009, marked on the chart; the median year is 27.8 C (82.0 F). 202530351990200020102020Record: 34.1 C (93.4 F) in 2009
The hottest day of the year at Grouse Creek Divide, 1988 to 2026. The record is 34.1 C (93.4 F) in 2009, marked on the chart; the median year is 27.8 C (82.0 F).
Hottest day (TXx) at Grouse Creek Divide by year
YearHottest day (TXx)
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
199721.0 C (69.8 F)
199825.0 C (77.0 F)
199930.4 C (86.7 F)
200023.7 C (74.7 F)
200126.0 C (78.8 F)
200226.2 C (79.2 F)
200328.4 C (83.1 F)
200431.0 C (87.8 F)
200527.4 C (81.3 F)
200625.4 C (77.7 F)
200730.8 C (87.4 F)
200826.5 C (79.7 F)
200934.1 C (93.4 F)
201030.8 C (87.4 F)
201130.1 C (86.2 F)
201231.3 C (88.3 F)
201332.4 C (90.3 F)
201426.9 C (80.4 F)
201529.9 C (85.8 F)
201629.0 C (84.2 F)
201728.1 C (82.6 F)
201829.4 C (84.9 F)
201930.7 C (87.3 F)
202027.8 C (82.0 F)
202127.2 C (81.0 F)
202227.8 C (82.0 F)
202325.0 C (77.0 F)
202425.6 C (78.1 F)
202526.1 C (79.0 F)
202625.6 C (78.1 F)

Coldest night (TNn)

Coldest night (TNn) at Grouse Creek Divide by year The coldest night of the year at Grouse Creek Divide, 1988 to 2026. The record is -31.0 C (-23.8 F) in 1999, marked on the chart; the median year is -23.3 C (-10.0 F). -35-30-25-20-151990200020102020Record: -31.0 C (-23.8 F) in 1999
The coldest night of the year at Grouse Creek Divide, 1988 to 2026. The record is -31.0 C (-23.8 F) in 1999, marked on the chart; the median year is -23.3 C (-10.0 F).
Coldest night (TNn) at Grouse Creek Divide by year
YearColdest night (TNn)
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997-20.0 C (-4.0 F)
1998-24.0 C (-11.2 F)
1999-31.0 C (-23.8 F)
2000-23.0 C (-9.4 F)
2001-23.7 C (-10.7 F)
2002-21.7 C (-7.1 F)
2003-20.9 C (-5.6 F)
2004-28.4 C (-19.1 F)
2005-22.5 C (-8.5 F)
2006-27.3 C (-17.1 F)
2007-27.8 C (-18.0 F)
2008-22.0 C (-7.6 F)
2009-24.8 C (-12.6 F)
2010-15.7 C (3.7 F)
2011-19.4 C (-2.9 F)
2012-24.3 C (-11.7 F)
2013-22.8 C (-9.0 F)
2014-18.7 C (-1.7 F)
2015-19.4 C (-2.9 F)
2016-20.1 C (-4.2 F)
2017-25.2 C (-13.4 F)
2018-20.9 C (-5.6 F)
2019-23.0 C (-9.4 F)
2020-23.9 C (-11.0 F)
2021-25.0 C (-13.0 F)
2022-24.4 C (-11.9 F)
2023-23.9 C (-11.0 F)
2024-26.7 C (-16.1 F)
2025-22.2 C (-8.0 F)
2026-24.4 C (-11.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Grouse Creek Divide by year The wettest day of the year at Grouse Creek Divide, 1988 to 2026. The record is 165.1 mm (6.5 in) in 2021, marked on the chart; the median year is 78.7 mm (3.1 in). 0501001502001990200020102020Record: 165.1 mm (6.5 in) in 2021
The wettest day of the year at Grouse Creek Divide, 1988 to 2026. The record is 165.1 mm (6.5 in) in 2021, marked on the chart; the median year is 78.7 mm (3.1 in).
Wettest day (Rx1day) at Grouse Creek Divide by year
YearWettest day (Rx1day)
198855.9 mm (2.2 in)
198991.4 mm (3.6 in)
199043.2 mm (1.7 in)
199148.3 mm (1.9 in)
199266.0 mm (2.6 in)
199355.9 mm (2.2 in)
199445.7 mm (1.8 in)
199576.2 mm (3.0 in)
199678.7 mm (3.1 in)
199753.3 mm (2.1 in)
199881.3 mm (3.2 in)
199945.7 mm (1.8 in)
200043.2 mm (1.7 in)
200196.5 mm (3.8 in)
200299.1 mm (3.9 in)
200381.3 mm (3.2 in)
200473.7 mm (2.9 in)
200555.9 mm (2.2 in)
2006101.6 mm (4.0 in)
2007101.6 mm (4.0 in)
200881.3 mm (3.2 in)
200981.3 mm (3.2 in)
2010106.7 mm (4.2 in)
2011116.8 mm (4.6 in)
201294.0 mm (3.7 in)
201366.0 mm (2.6 in)
201481.3 mm (3.2 in)
2015111.8 mm (4.4 in)
201678.7 mm (3.1 in)
201766.0 mm (2.6 in)
2018116.8 mm (4.6 in)
201966.0 mm (2.6 in)
2020147.3 mm (5.8 in)
2021165.1 mm (6.5 in)
202248.3 mm (1.9 in)
202345.7 mm (1.8 in)
202461.0 mm (2.4 in)
2025109.2 mm (4.3 in)
202661.0 mm (2.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Grouse Creek Divide by year The wettest five days of the year at Grouse Creek Divide, 1988 to 2026. The record is 332.7 mm (13.1 in) in 2012, marked on the chart; the median year is 167.6 mm (6.6 in). 01002003004001990200020102020Record: 332.7 mm (13.1 in) in 2012
The wettest five days of the year at Grouse Creek Divide, 1988 to 2026. The record is 332.7 mm (13.1 in) in 2012, marked on the chart; the median year is 167.6 mm (6.6 in).
Wettest five days (Rx5day) at Grouse Creek Divide by year
YearWettest five days (Rx5day)
1988116.9 mm (4.6 in)
1989180.3 mm (7.1 in)
1990101.5 mm (4.0 in)
1991116.7 mm (4.6 in)
1992124.5 mm (4.9 in)
1993121.9 mm (4.8 in)
199455.8 mm (2.2 in)
1995205.6 mm (8.1 in)
1996114.2 mm (4.5 in)
1997165.2 mm (6.5 in)
1998147.3 mm (5.8 in)
1999127.1 mm (5.0 in)
2000137.2 mm (5.4 in)
2001220.9 mm (8.7 in)
2002259.0 mm (10.2 in)
2003190.6 mm (7.5 in)
2004149.9 mm (5.9 in)
2005111.7 mm (4.4 in)
2006175.3 mm (6.9 in)
2007243.9 mm (9.6 in)
2008167.6 mm (6.6 in)
2009200.6 mm (7.9 in)
2010289.5 mm (11.4 in)
2011210.8 mm (8.3 in)
2012332.7 mm (13.1 in)
2013185.5 mm (7.3 in)
2014188.0 mm (7.4 in)
2015261.6 mm (10.3 in)
2016170.2 mm (6.7 in)
2017157.5 mm (6.2 in)
2018172.8 mm (6.8 in)
2019155.0 mm (6.1 in)
2020251.5 mm (9.9 in)
2021279.5 mm (11.0 in)
202299.0 mm (3.9 in)
2023114.4 mm (4.5 in)
2024127.0 mm (5.0 in)
2025182.8 mm (7.2 in)
2026116.9 mm (4.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Grouse Creek Divide by year The longest dry spell of the year at Grouse Creek Divide, 1988 to 2026. The record is 43 days in 2002, marked on the chart; the median year is 19 days. 010203040501990200020102020Record: 43 days in 2002
The longest dry spell of the year at Grouse Creek Divide, 1988 to 2026. The record is 43 days in 2002, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Grouse Creek Divide by year
YearLongest dry spell (CDD)
19888 days
198918 days
199019 days
199115 days
199217 days
199319 days
19948 days
199517 days
199624 days
19979 days
199816 days
199921 days
200016 days
200123 days
200243 days
200314 days
200434 days
200518 days
200616 days
200720 days
200816 days
200924 days
201013 days
201135 days
201223 days
201325 days
201418 days
201517 days
201615 days
201732 days
201819 days
201927 days
202020 days
202120 days
202222 days
202318 days
202414 days
202522 days
202619 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

20 years with a frost

Across 20 years with a frost, the median last spring frost at Grouse Creek Divide falls on 23 May and the median first autumn frost on 22 September, which leaves a median of 120 days between them.

Frost dates and growing season at Grouse Creek Divide
MeasureMedian, all yearsEarliest periodRecent period (1998 to 2024)Recent against earliestFitted trend
Last spring frost23 Mayn/a23 Mayn/an/a
First autumn frost22 Septembern/a22 Septembern/an/a
Growing days120 daysn/a120 daysn/an/a

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

32 years, 1989 to 2024

A day with at least 78.2 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 172.3 mm (6.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Grouse Creek Divide: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years78.2 mm (3.1 in)
5 years104.9 mm (4.1 in)
10 years122.0 mm (4.8 in)
25 years142.9 mm (5.6 in)
50 years157.9 mm (6.2 in)Longer than the 32 years of record
100 years172.3 mm (6.8 in)Longer than the 32 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, 32 years of values from 1989 to 2024.

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: 165.1 mm (6.5 in) in 2021; 147.3 mm (5.8 in) in 2020; 116.8 mm (4.6 in) in 2011.

Download the Data

  • Data for Grouse Creek Divide standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Grouse Creek Divide 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 (2026-10-12).