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Gross Rsvr Weather Records (USC00053629)

Record envelope, standing records and threshold days for Gross Rsvr (USC00053629), Colorado, United States, with 49 years of record.

Key Facts for Gross Rsvr

  • Gross Rsvr (USC00053629) is a weather station in Colorado, United States at 39.94 latitude and -105.35 longitude, 2,099 m (6,885 ft) above sea level.
  • The station reports from 1978 to 2026, 49 years of record.
  • 1,464 records set at Gross Rsvr still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Gross Rsvr set a daily record precipitation of 12.7 mm (0.5 in) on 17 September 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, 39.94 latitude, -105.35 longitude.
  • Elevation: 2,099 m (6,885 ft).
  • Period of record: 1978 to 2026, 49 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

51 days at or beyond a record
Daily record high and record low at Gross Rsvr, with 2026 drawn through them The band shows the record high and record low for each calendar day at Gross Rsvr. The lines show the 2026 daily maximum and minimum. 51 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 Gross Rsvr. The lines show the 2026 daily maximum and minimum. 51 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Gross Rsvr, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan19.4 C (66.9 F)-27.8 C (-18.0 F)14.4 C (57.9 F)-22.2 C (-8.0 F)
Feb18.3 C (64.9 F)-31.1 C (-24.0 F)16.1 C (61.0 F)-13.9 C (7.0 F)
Mar26.7 C (80.1 F)-19.4 C (-2.9 F)26.7 C (80.1 F)-12.8 C (9.0 F)
Apr25.6 C (78.1 F)-17.8 C (0.0 F)23.9 C (75.0 F)-6.1 C (21.0 F)
May30.0 C (86.0 F)-11.7 C (10.9 F)26.7 C (80.1 F)-3.9 C (25.0 F)
Jun34.4 C (93.9 F)-2.2 C (28.0 F)32.2 C (90.0 F)3.9 C (39.0 F)
Jul35.0 C (95.0 F)1.7 C (35.1 F)32.8 C (91.0 F)7.8 C (46.0 F)
Aug35.0 C (95.0 F)-2.8 C (27.0 F)35.0 C (95.0 F)5.0 C (41.0 F)
Sep32.8 C (91.0 F)-8.9 C (16.0 F)30.0 C (86.0 F)4.4 C (39.9 F)
Oct26.7 C (80.1 F)-18.3 C (-0.9 F)27.8 C (82.0 F)3.3 C (37.9 F)
Nov21.7 C (71.1 F)-25.6 C (-14.1 F)n/an/a
Dec17.8 C (64.0 F)-28.3 C (-18.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Gross Rsvr by the year they were set 1,464 records at Gross Rsvr still stand. 2006 holds the most, with 86. 02550751001978: 571979: 72003: 22004: 692005: 662006: 862007: 622008: 662009: 822010: 462011: 592012: 702013: 772014: 782015: 642016: 572017: 592018: 422019: 332020: 652021: 482022: 632023: 522024: 392025: 522026: 63197820042007201020132016201920222025
1,464 records at Gross Rsvr still stand. 2006 holds the most, with 86.
Standing records at Gross Rsvr by the year they were set
Year setStanding records
197857
19797
20032
200469
200566
200686
200762
200866
200982
201046
201159
201270
201377
201478
201564
201657
201759
201842
201933
202065
202148
202263
202352
202439
202552
202663

All-Time Record Progression

1 new records
When Gross Rsvr set new all-time records 1 all-time records were set at Gross Rsvr between 12 September 2013 and 12 September 2013. Each dot is a new record. Record daily precipitation12 September 2013: Record daily precipitation 154.2 mm (6.1 in)
1 all-time records were set at Gross Rsvr between 12 September 2013 and 12 September 2013. Each dot is a new record.
When Gross Rsvr set new all-time records
DateKindDetail
2013-09-12Record daily precipitationRecord daily precipitation 154.2 mm (6.1 in)

Wettest Day of Each Month

Sep: 154.2 mm (6.1 in)
Record daily precipitation for each month at Gross Rsvr The wettest day on record for each calendar month at Gross Rsvr. The most was 154.2 mm (6.1 in) on 12 September 2013. 050100150200 Jan: 28.7 mm (1.1 in), 6 January 1998 Jan Feb: 35.1 mm (1.4 in), 26 February 1984 Feb Mar: 78.5 mm (3.1 in), 19 March 2003 Mar Apr: 105.4 mm (4.1 in), 3 April 1986 Apr May: 66.0 mm (2.6 in), 12 May 1982 May Jun: 71.4 mm (2.8 in), 9 June 1987 Jun Jul: 66.5 mm (2.6 in), 21 July 1991 Jul Aug: 88.1 mm (3.5 in), 5 August 1999 Aug Sep: 154.2 mm (6.1 in), 12 September 2013 Sep Oct: 44.5 mm (1.8 in), 25 October 1997 Oct Nov: 34.3 mm (1.4 in), 20 November 1979 Nov Dec: 49.5 mm (1.9 in), 21 December 2006 Dec
The wettest day on record for each calendar month at Gross Rsvr. The most was 154.2 mm (6.1 in) on 12 September 2013.
Record daily precipitation for each month at Gross Rsvr
MonthRecord daily precipitation (mm)Date
Jan28.7 mm (1.1 in)6 January 1998
Feb35.1 mm (1.4 in)26 February 1984
Mar78.5 mm (3.1 in)19 March 2003
Apr105.4 mm (4.1 in)3 April 1986
May66.0 mm (2.6 in)12 May 1982
Jun71.4 mm (2.8 in)9 June 1987
Jul66.5 mm (2.6 in)21 July 1991
Aug88.1 mm (3.5 in)5 August 1999
Sep154.2 mm (6.1 in)12 September 2013
Oct44.5 mm (1.8 in)25 October 1997
Nov34.3 mm (1.4 in)20 November 1979
Dec49.5 mm (1.9 in)21 December 2006

Period of Record Coverage

1978 to 2026
Days with data per year at Gross Rsvr 26 years of record at Gross Rsvr, 1978 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 1978, 1979, 2003, 2019, 2026. 1978: 153 of 365 days1979: 30 of 365 days2003: 31 of 365 days2004: 363 of 366 days2005: 365 of 365 days2006: 364 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 333 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: 365 of 366 days2017: 364 of 365 days2018: 361 of 365 days2019: 320 of 365 days2020: 365 of 366 days2021: 365 of 365 days2022: 360 of 365 days2023: 359 of 365 days2024: 363 of 366 days2025: 362 of 365 days2026: 283 of 365 days20052010201520202025
26 years of record at Gross Rsvr, 1978 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 1978, 1979, 2003, 2019, 2026.
Days with data per year at Gross Rsvr
YearDays with dataShare of yearComplete
197815342%No
1979308%No
2003318%No
200436399%Yes
2005365100%Yes
2006364100%Yes
2007365100%Yes
2008366100%Yes
200933391%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015364100%Yes
2016365100%Yes
2017364100%Yes
201836199%Yes
201932088%No
2020365100%Yes
2021365100%Yes
202236099%Yes
202335998%Yes
202436399%Yes
202536299%Yes
202628378%No

Latest Records

20
Latest records at Gross Rsvr
DateStationRecordValueBeat old record byOld record stoodSignificance
17 September 2026Gross Rsvr, USdaily rain (Provisional)12.7 mm (0.5 in)7.9 mm (0.31 in)39 years20 of 100 (Routine)
26 June 2026Gross Rsvr, USdaily rain (Tie)28.4 mm (1.1 in)tie40 years4 of 100 (Routine)
9 January 2026Gross Rsvr, USdaily snowfall13.7 cm (5.4 in)8.6 cm (3.4 in)39 years28 of 100 (Routine)
9 January 2026Gross Rsvr, USdaily rain7.6 mm (0.30 in)5.1 mm (0.20 in)39 years20 of 100 (Routine)
24 September 2025Gross Rsvr, USdaily rain27.2 mm (1.1 in)6.1 mm (0.24 in)8 years11 of 100 (Routine)
17 September 2025Gross Rsvr, USdaily rain (Tie)4.8 mm (0.19 in)tie38 years3 of 100 (Routine)
27 August 2025Gross Rsvr, USdaily rain14.7 mm (0.6 in)4.3 mm (0.17 in)46 years20 of 100 (Routine)
7 May 2025Gross Rsvr, USdaily rain50.5 mm (2.0 in)34.5 mm (1.4 in)12 years43 of 100 (Notable)
30 March 2025Gross Rsvr, USdaily rain30.0 mm (1.2 in)17.8 mm (0.7 in)6 years20 of 100 (Routine)
21 February 2025Gross Rsvr, USdaily rain13.0 mm (0.5 in)2.1 mm (0.08 in)10 years11 of 100 (Routine)
21 February 2025Gross Rsvr, USdaily snowfall16.5 cm (6.5 in)1.3 cm (0.5 in)10 years8 of 100 (Routine)
25 January 2025Gross Rsvr, USdaily snowfall (Tie)5.1 cm (2.0 in)tie34 years3 of 100 (Routine)
18 January 2025Gross Rsvr, USdaily snowfall14.0 cm (5.5 in)3.8 cm (1.5 in)35 years20 of 100 (Routine)
18 January 2025Gross Rsvr, USdaily rain8.4 mm (0.33 in)1.8 mm (0.07 in)2 years8 of 100 (Routine)
9 November 2024Gross Rsvr, USdaily snow depth33.0 cm (13.0 in)17.8 cm (7.0 in)39 years32 of 100 (Routine)
9 November 2024Gross Rsvr, USdaily rain17.5 mm (0.7 in)4.3 mm (0.17 in)1 year11 of 100 (Routine)
8 November 2024Gross Rsvr, USdaily snow depth20.3 cm (8.0 in)2.5 cm (1.0 in)34 years16 of 100 (Routine)
7 November 2024Gross Rsvr, USdaily snow depth30.5 cm (12.0 in)5.1 cm (2.0 in)34 years18 of 100 (Routine)
6 November 2024Gross Rsvr, USdaily rain12.4 mm (0.5 in)1.2 mm (0.05 in)34 years16 of 100 (Routine)
6 November 2024Gross Rsvr, USdaily snow depth (Tie)22.9 cm (9.0 in)tie34 years3 of 100 (Routine)

Climate Trend

20 complete years, 2004 to 2025
Annual mean temperature at Gross Rsvr as warming stripes, 2004 to 2025 One stripe for each of 20 complete years at Gross Rsvr, 2004 to 2025. Blue stripes are years cooler than the station's own mean of 7.2 C (45.0 F); red stripes are warmer. The coolest year was 2023, at 6.3 C (43.4 F), and the warmest was 2012, at 8.3 C (47.0 F). The strongest colour marks a difference of 1.2 C (2.2 F). 2004: 6.9 C, -0.3 C from the station mean2005: 7.3 C, +0.1 C from the station mean2006: 7.3 C, +0.1 C from the station mean2007: 7.1 C, -0.1 C from the station mean2008: 6.4 C, -0.8 C from the station mean2010: 7.0 C, -0.2 C from the station mean2011: 6.9 C, -0.3 C from the station mean2012: 8.3 C, +1.1 C from the station mean2013: 6.5 C, -0.7 C from the station mean2014: 7.1 C, -0.1 C from the station mean2015: 7.6 C, +0.4 C from the station mean2016: 7.9 C, +0.7 C from the station mean2017: 7.4 C, +0.2 C from the station mean2018: 6.9 C, -0.3 C from the station mean2020: 7.2 C, 0.0 C from the station mean2021: 7.5 C, +0.3 C from the station mean2022: 7.0 C, -0.2 C from the station mean2023: 6.3 C, -0.9 C from the station mean2024: 7.7 C, +0.5 C from the station mean2025: 7.7 C, +0.5 C from the station mean20042006200820102012201420162018202020222024
One stripe for each of 20 complete years at Gross Rsvr, 2004 to 2025. Blue stripes are years cooler than the station's own mean of 7.2 C (45.0 F); red stripes are warmer. The coolest year was 2023, at 6.3 C (43.4 F), and the warmest was 2012, at 8.3 C (47.0 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Gross Rsvr as warming stripes, 2004 to 2025
YearAnnual mean temperatureDifference from the station mean
20046.9 C-0.33 C
20057.3 C+0.14 C
20067.3 C+0.10 C
20077.1 C-0.06 C
20086.4 C-0.79 C
20107.0 C-0.21 C
20116.9 C-0.33 C
20128.3 C+1.13 C
20136.5 C-0.70 C
20147.1 C-0.14 C
20157.6 C+0.37 C
20167.9 C+0.70 C
20177.4 C+0.20 C
20186.9 C-0.31 C
20207.2 C-0.02 C
20217.5 C+0.32 C
20227.0 C-0.19 C
20236.3 C-0.86 C
20247.7 C+0.49 C
20257.7 C+0.47 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

1978 to 2026
Yearly extremes at Gross Rsvr: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.0 C (95.0 F)202432.8 C (91.0 F)26
Coldest night (TNn)-31.1 C (-24.0 F)2011-24.7 C (-12.5 F)26
Wettest day (Rx1day)154.2 mm (6.1 in)201344.5 mm (1.8 in)49
Wettest five days (Rx5day)310.7 mm (12.2 in)201363.7 mm (2.5 in)49
Longest dry spell (CDD)51 days198428 days49

Hottest day (TXx)

Hottest day (TXx) at Gross Rsvr by year The hottest day of the year at Gross Rsvr, 1978 to 2026. The record is 35.0 C (95.0 F) in 2024, marked on the chart; the median year is 32.8 C (91.0 F). 152025303519801990200020102020Record: 35.0 C (95.0 F) in 2024
The hottest day of the year at Gross Rsvr, 1978 to 2026. The record is 35.0 C (95.0 F) in 2024, marked on the chart; the median year is 32.8 C (91.0 F).
Hottest day (TXx) at Gross Rsvr by year
YearHottest day (TXx)
197833.3 C (91.9 F)
197930.6 C (87.1 F)
1980n/a
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
200315.6 C (60.1 F)
200432.2 C (90.0 F)
200533.9 C (93.0 F)
200633.3 C (91.9 F)
200732.2 C (90.0 F)
200832.8 C (91.0 F)
200931.7 C (89.1 F)
201032.8 C (91.0 F)
201132.2 C (90.0 F)
201234.4 C (93.9 F)
201332.8 C (91.0 F)
201433.3 C (91.9 F)
201532.2 C (90.0 F)
201634.4 C (93.9 F)
201731.7 C (89.1 F)
201832.8 C (91.0 F)
201932.2 C (90.0 F)
202032.8 C (91.0 F)
202132.8 C (91.0 F)
202233.3 C (91.9 F)
202332.8 C (91.0 F)
202435.0 C (95.0 F)
202533.3 C (91.9 F)
202635.0 C (95.0 F)

Coldest night (TNn)

Coldest night (TNn) at Gross Rsvr by year The coldest night of the year at Gross Rsvr, 1978 to 2026. The record is -31.1 C (-24.0 F) in 2011, marked on the chart; the median year is -24.7 C (-12.5 F). -40-30-20-10019801990200020102020Record: -31.1 C (-24.0 F) in 2011
The coldest night of the year at Gross Rsvr, 1978 to 2026. The record is -31.1 C (-24.0 F) in 2011, marked on the chart; the median year is -24.7 C (-12.5 F).
Coldest night (TNn) at Gross Rsvr by year
YearColdest night (TNn)
1978-7.2 C (19.0 F)
1979-0.6 C (30.9 F)
1980n/a
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
2003-15.6 C (3.9 F)
2004-23.9 C (-11.0 F)
2005-27.2 C (-17.0 F)
2006-26.7 C (-16.1 F)
2007-22.2 C (-8.0 F)
2008-22.8 C (-9.0 F)
2009-25.6 C (-14.1 F)
2010-22.8 C (-9.0 F)
2011-31.1 C (-24.0 F)
2012-18.9 C (-2.0 F)
2013-25.0 C (-13.0 F)
2014-28.9 C (-20.0 F)
2015-22.8 C (-9.0 F)
2016-24.4 C (-11.9 F)
2017-25.0 C (-13.0 F)
2018-26.1 C (-15.0 F)
2019-20.6 C (-5.1 F)
2020-22.2 C (-8.0 F)
2021-26.1 C (-15.0 F)
2022-28.3 C (-18.9 F)
2023-25.0 C (-13.0 F)
2024-27.8 C (-18.0 F)
2025-25.0 C (-13.0 F)
2026-22.2 C (-8.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Gross Rsvr by year The wettest day of the year at Gross Rsvr, 1978 to 2026. The record is 154.2 mm (6.1 in) in 2013, marked on the chart; the median year is 44.5 mm (1.8 in). 05010015020019801990200020102020Record: 154.2 mm (6.1 in) in 2013
The wettest day of the year at Gross Rsvr, 1978 to 2026. The record is 154.2 mm (6.1 in) in 2013, marked on the chart; the median year is 44.5 mm (1.8 in).
Wettest day (Rx1day) at Gross Rsvr by year
YearWettest day (Rx1day)
197847.5 mm (1.9 in)
197938.9 mm (1.5 in)
198048.0 mm (1.9 in)
198135.6 mm (1.4 in)
198266.0 mm (2.6 in)
198362.2 mm (2.4 in)
198455.9 mm (2.2 in)
198535.1 mm (1.4 in)
1986105.4 mm (4.1 in)
198771.4 mm (2.8 in)
198841.9 mm (1.6 in)
198923.9 mm (0.9 in)
199076.2 mm (3.0 in)
199166.5 mm (2.6 in)
199255.9 mm (2.2 in)
199340.1 mm (1.6 in)
199417.0 mm (0.7 in)
199552.1 mm (2.1 in)
199635.6 mm (1.4 in)
199753.3 mm (2.1 in)
199835.1 mm (1.4 in)
199988.1 mm (3.5 in)
200038.4 mm (1.5 in)
200132.3 mm (1.3 in)
200244.5 mm (1.8 in)
200378.5 mm (3.1 in)
200444.5 mm (1.8 in)
200543.2 mm (1.7 in)
200649.5 mm (1.9 in)
200720.3 mm (0.8 in)
200831.0 mm (1.2 in)
200964.3 mm (2.5 in)
201050.3 mm (2.0 in)
201134.8 mm (1.4 in)
201233.0 mm (1.3 in)
2013154.2 mm (6.1 in)
201432.3 mm (1.3 in)
201554.9 mm (2.2 in)
201638.4 mm (1.5 in)
201747.0 mm (1.9 in)
201833.8 mm (1.3 in)
201938.1 mm (1.5 in)
202052.3 mm (2.1 in)
202130.7 mm (1.2 in)
202221.1 mm (0.8 in)
202347.2 mm (1.9 in)
202453.3 mm (2.1 in)
202550.5 mm (2.0 in)
202628.4 mm (1.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Gross Rsvr by year The wettest five days of the year at Gross Rsvr, 1978 to 2026. The record is 310.7 mm (12.2 in) in 2013, marked on the chart; the median year is 63.7 mm (2.5 in). 010020030040019801990200020102020Record: 310.7 mm (12.2 in) in 2013
The wettest five days of the year at Gross Rsvr, 1978 to 2026. The record is 310.7 mm (12.2 in) in 2013, marked on the chart; the median year is 63.7 mm (2.5 in).
Wettest five days (Rx5day) at Gross Rsvr by year
YearWettest five days (Rx5day)
197874.2 mm (2.9 in)
197960.2 mm (2.4 in)
198063.4 mm (2.5 in)
198173.3 mm (2.9 in)
1982101.3 mm (4.0 in)
198384.7 mm (3.3 in)
198472.5 mm (2.9 in)
198542.0 mm (1.7 in)
1986134.3 mm (5.3 in)
198771.9 mm (2.8 in)
198883.5 mm (3.3 in)
198943.1 mm (1.7 in)
199096.3 mm (3.8 in)
199184.0 mm (3.3 in)
199284.9 mm (3.3 in)
199353.8 mm (2.1 in)
199429.5 mm (1.2 in)
199568.4 mm (2.7 in)
199679.8 mm (3.1 in)
199796.4 mm (3.8 in)
199861.0 mm (2.4 in)
1999101.1 mm (4.0 in)
200045.3 mm (1.8 in)
200156.3 mm (2.2 in)
200248.8 mm (1.9 in)
2003160.5 mm (6.3 in)
200456.2 mm (2.2 in)
200563.7 mm (2.5 in)
200664.6 mm (2.5 in)
200738.6 mm (1.5 in)
200865.3 mm (2.6 in)
200992.5 mm (3.6 in)
201055.8 mm (2.2 in)
201153.4 mm (2.1 in)
201255.1 mm (2.2 in)
2013310.7 mm (12.2 in)
201460.1 mm (2.4 in)
201582.6 mm (3.3 in)
201663.3 mm (2.5 in)
201786.7 mm (3.4 in)
201849.5 mm (1.9 in)
201940.9 mm (1.6 in)
202058.9 mm (2.3 in)
202160.4 mm (2.4 in)
202234.6 mm (1.4 in)
2023106.9 mm (4.2 in)
202488.9 mm (3.5 in)
202559.6 mm (2.3 in)
202652.5 mm (2.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Gross Rsvr by year The longest dry spell of the year at Gross Rsvr, 1978 to 2026. The record is 51 days in 1984, marked on the chart; the median year is 28 days. 10203040506019801990200020102020Record: 51 days in 1984
The longest dry spell of the year at Gross Rsvr, 1978 to 2026. The record is 51 days in 1984, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at Gross Rsvr by year
YearLongest dry spell (CDD)
197828 days
197927 days
198036 days
198125 days
198222 days
198330 days
198451 days
198520 days
198629 days
198725 days
198828 days
198925 days
199019 days
199120 days
199238 days
199336 days
199446 days
199523 days
199633 days
199732 days
199840 days
199933 days
200030 days
200123 days
200236 days
200328 days
200428 days
200526 days
200621 days
200720 days
200838 days
200932 days
201031 days
201125 days
201239 days
201326 days
201428 days
201525 days
201629 days
201727 days
201849 days
201921 days
202043 days
202136 days
202234 days
202343 days
202426 days
202535 days
202625 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 Gross Rsvr falls on 19 May and the median first autumn frost on 3 October, which leaves a median of 131 days between them.

Frost dates and growing season at Gross Rsvr
MeasureMedian, all yearsEarliest periodRecent period (2004 to 2025)Recent against earliestFitted trend
Last spring frost19 Mayn/a19 Mayn/an/a
First autumn frost3 Octobern/a3 Octobern/an/a
Growing days131 daysn/a131 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

46 years, 1979 to 2025

A day with at least 44.1 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 136.0 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Gross Rsvr: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years44.1 mm (1.7 in)
5 years63.0 mm (2.5 in)
10 years77.6 mm (3.1 in)
25 years98.6 mm (3.9 in)
50 years116.3 mm (4.6 in)Longer than the 46 years of record
100 years136.0 mm (5.4 in)Longer than the 46 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, 46 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: 154.2 mm (6.1 in) in 2013; 105.4 mm (4.1 in) in 1986; 88.1 mm (3.5 in) in 1999.

Download the Data

  • Data for Gross Rsvr standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Gross Rsvr 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).