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Valley NWS Weather Records (USC00258795)

Record envelope, standing records and threshold days for Valley NWS (USC00258795), Nebraska, United States, with 33 years of record.

Key Facts for Valley NWS

  • Valley NWS (USC00258795) is a weather station in Nebraska, United States at 41.32 latitude and -96.37 longitude, 349 m (1,145 ft) above sea level.
  • The station reports from 1994 to 2026, 33 years of record.
  • 1,464 records set at Valley NWS still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Valley NWS set a daily record high minimum temperature of 18.9 C (66.0 F) on 11 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Nebraska, United States, 41.32 latitude, -96.37 longitude.
  • Elevation: 349 m (1,145 ft).
  • Period of record: 1994 to 2026, 33 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

34 days at or beyond a record
Daily record high and record low at Valley NWS, with 2026 drawn through them The band shows the record high and record low for each calendar day at Valley NWS. The lines show the 2026 daily maximum and minimum. 34 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Valley NWS. The lines show the 2026 daily maximum and minimum. 34 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Valley NWS, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan20.6 C (69.1 F)-29.4 C (-20.9 F)18.3 C (64.9 F)-21.7 C (-7.1 F)
Feb25.6 C (78.1 F)-31.1 C (-24.0 F)22.2 C (72.0 F)-17.8 C (0.0 F)
Mar35.0 C (95.0 F)-23.3 C (-9.9 F)35.0 C (95.0 F)-13.3 C (8.1 F)
Apr33.9 C (93.0 F)-10.0 C (14.0 F)30.6 C (87.1 F)-0.6 C (30.9 F)
May37.8 C (100.0 F)-1.1 C (30.0 F)33.3 C (91.9 F)0.6 C (33.1 F)
Jun38.9 C (102.0 F)4.4 C (39.9 F)35.0 C (95.0 F)12.2 C (54.0 F)
Jul40.6 C (105.1 F)9.4 C (48.9 F)38.9 C (102.0 F)17.8 C (64.0 F)
Aug38.9 C (102.0 F)7.8 C (46.0 F)33.3 C (91.9 F)16.1 C (61.0 F)
Sep39.4 C (102.9 F)-1.7 C (28.9 F)35.6 C (96.1 F)13.9 C (57.0 F)
Oct33.9 C (93.0 F)-10.0 C (14.0 F)32.2 C (90.0 F)7.8 C (46.0 F)
Nov28.9 C (84.0 F)-16.7 C (1.9 F)n/an/a
Dec22.8 C (73.0 F)-25.6 C (-14.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Valley NWS by the year they were set 1,464 records at Valley NWS still stand. 2012 holds the most, with 93. 02550751001994: 121995: 591996: 681997: 491998: 561999: 362000: 572001: 342002: 522003: 542004: 572005: 412006: 402007: 282008: 262009: 532010: 292011: 372012: 932013: 372014: 612015: 412016: 392017: 402018: 472019: 382020: 442021: 442022: 462023: 302024: 362025: 442026: 36199419982002200620102014201820222026
1,464 records at Valley NWS still stand. 2012 holds the most, with 93.
Standing records at Valley NWS by the year they were set
Year setStanding records
199412
199559
199668
199749
199856
199936
200057
200134
200252
200354
200457
200541
200640
200728
200826
200953
201029
201137
201293
201337
201461
201541
201639
201740
201847
201938
202044
202144
202246
202330
202436
202544
202636

All-Time Record Progression

1 new records
When Valley NWS set new all-time records 1 all-time records were set at Valley NWS between 21 June 2025 and 21 June 2025. Each dot is a new record. Record high minimum temperature21 June 2025: Record high minimum temperature 27.2 C (81.0 F)2025
1 all-time records were set at Valley NWS between 21 June 2025 and 21 June 2025. Each dot is a new record.
When Valley NWS set new all-time records
DateKindDetail
2025-06-21Record high minimum temperatureRecord high minimum temperature 27.2 C (81.0 F)

Wettest Day of Each Month

Jun: 112.8 mm (4.4 in)
Record daily precipitation for each month at Valley NWS The wettest day on record for each calendar month at Valley NWS. The most was 112.8 mm (4.4 in) on 18 June 2016. 050100150 Jan: 24.6 mm (1.0 in), 22 January 2018 Jan Feb: 45.5 mm (1.8 in), 13 February 2005 Feb Mar: 81.5 mm (3.2 in), 31 March 2006 Mar Apr: 79.0 mm (3.1 in), 26 April 2024 Apr May: 90.2 mm (3.6 in), 21 May 2024 May Jun: 112.8 mm (4.4 in), 18 June 2016 Jun Jul: 93.7 mm (3.7 in), 1 July 2023 Jul Aug: 106.4 mm (4.2 in), 31 August 2021 Aug Sep: 85.3 mm (3.4 in), 2 September 1997 Sep Oct: 78.7 mm (3.1 in), 24 October 2021 Oct Nov: 46.5 mm (1.8 in), 29 November 1997 Nov Dec: 49.5 mm (1.9 in), 13 December 2015 Dec
The wettest day on record for each calendar month at Valley NWS. The most was 112.8 mm (4.4 in) on 18 June 2016.
Record daily precipitation for each month at Valley NWS
MonthRecord daily precipitation (mm)Date
Jan24.6 mm (1.0 in)22 January 2018
Feb45.5 mm (1.8 in)13 February 2005
Mar81.5 mm (3.2 in)31 March 2006
Apr79.0 mm (3.1 in)26 April 2024
May90.2 mm (3.6 in)21 May 2024
Jun112.8 mm (4.4 in)18 June 2016
Jul93.7 mm (3.7 in)1 July 2023
Aug106.4 mm (4.2 in)31 August 2021
Sep85.3 mm (3.4 in)2 September 1997
Oct78.7 mm (3.1 in)24 October 2021
Nov46.5 mm (1.8 in)29 November 1997
Dec49.5 mm (1.9 in)13 December 2015

Period of Record Coverage

1994 to 2026
Days with data per year at Valley NWS 33 years of record at Valley NWS, 1994 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1994, 2026. 1994: 176 of 365 days1995: 364 of 365 days1996: 365 of 366 days1997: 334 of 365 days1998: 364 of 365 days1999: 360 of 365 days2000: 355 of 366 days2001: 359 of 365 days2002: 365 of 365 days2003: 362 of 365 days2004: 364 of 366 days2005: 364 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 365 of 366 days2009: 363 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 335 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 362 of 365 days2026: 284 of 365 days1995200020052010201520202025
33 years of record at Valley NWS, 1994 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1994, 2026.
Days with data per year at Valley NWS
YearDays with dataShare of yearComplete
199417648%No
1995364100%Yes
1996365100%Yes
199733492%Yes
1998364100%Yes
199936099%Yes
200035597%Yes
200135998%Yes
2002365100%Yes
200336299%Yes
200436499%Yes
2005364100%Yes
2006365100%Yes
2007365100%Yes
2008365100%Yes
200936399%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
201333592%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
202536299%Yes
202628478%No

Latest Records

20
Latest records at Valley NWS
DateStationRecordValueBeat old record byOld record stoodSignificance
11 October 2026Valley NWS, USdaily high min (Provisional)18.9 C (66.0 F)3.9 C (7.0 F)23 years16 of 100 (Routine)
10 October 2026Valley NWS, USdaily high min (Provisional)17.2 C (63.0 F)2.2 C (4.0 F)15 years11 of 100 (Routine)
10 October 2026Valley NWS, USdaily high max (Provisional)31.7 C (89.1 F)1.1 C (2.0 F)1 year4 of 100 (Routine)
9 October 2026Valley NWS, USdaily high min (Tie, Provisional)17.2 C (63.0 F)tie5 years1 of 100 (Routine)
6 October 2026Valley NWS, USdaily high max (Tie, Provisional)30.0 C (86.0 F)tie28 years2 of 100 (Routine)
30 September 2026Valley NWS, USmonthly rain (Provisional)107.2 mm (4.2 in)21.9 mm (0.9 in)29 years36 of 100 (Notable)
28 September 2026Valley NWS, USdaily high min (Tie, Provisional)17.2 C (63.0 F)tie11 years1 of 100 (Routine)
26 September 2026Valley NWS, USdaily rain (Provisional)8.4 mm (0.33 in)2.8 mm (0.11 in)24 years11 of 100 (Routine)
18 September 2026Valley NWS, USdaily high max (Provisional)34.4 C (93.9 F)1.6 C (2.9 F)25 years13 of 100 (Routine)
15 September 2026Valley NWS, USdaily rain (Provisional)31.0 mm (1.2 in)11.2 mm (0.4 in)9 years12 of 100 (Routine)
14 September 2026Valley NWS, USdaily rain (Provisional)48.0 mm (1.9 in)33.3 mm (1.3 in)24 years33 of 100 (Routine)
8 September 2026Valley NWS, USdaily high min (Provisional)22.2 C (72.0 F)2.2 C (4.0 F)24 years14 of 100 (Routine)
5 September 2026Valley NWS, USdaily high min (Provisional)23.9 C (75.0 F)1.1 C (2.0 F)11 years8 of 100 (Routine)
4 September 2026Valley NWS, USmonthly high min (Provisional)24.4 C (75.9 F)0.5 C (0.9 F)10 years17 of 100 (Routine)
3 September 2026Valley NWS, USmonthly high min (Tie, Provisional)23.9 C (75.0 F)tie10 years4 of 100 (Routine)
2 September 2026Valley NWS, USdaily high min (Provisional)22.2 C (72.0 F)0.5 C (0.9 F)15 years8 of 100 (Routine)
2 September 2026Valley NWS, USdaily high max (Provisional)35.6 C (96.1 F)0.6 C (1.1 F)3 years4 of 100 (Routine)
1 September 2026Valley NWS, USdaily high min (Provisional)23.3 C (73.9 F)2.2 C (4.0 F)11 years10 of 100 (Routine)
30 August 2026Valley NWS, USdaily high min (Provisional)24.4 C (75.9 F)1.6 C (2.9 F)12 years11 of 100 (Routine)
13 August 2026Valley NWS, USdaily rain50.5 mm (2.0 in)30.9 mm (1.2 in)24 years29 of 100 (Routine)

Climate Trend

28 complete years, 1995 to 2025
Annual mean temperature at Valley NWS as warming stripes, 1995 to 2025 One stripe for each of 28 complete years at Valley NWS, 1995 to 2025. Blue stripes are years cooler than the station's own mean of 10.9 C (51.6 F); red stripes are warmer. The coolest year was 1996, at 8.7 C (47.6 F), and the warmest was 2012, at 13.1 C (55.5 F). The strongest colour marks a difference of 2.3 C (4.1 F). 1995: 10.0 C, -0.9 C from the station mean1996: 8.7 C, -2.2 C from the station mean1998: 11.3 C, +0.4 C from the station mean1999: 10.8 C, 0.0 C from the station mean2000: 10.3 C, -0.5 C from the station mean2002: 10.4 C, -0.5 C from the station mean2003: 9.9 C, -1.0 C from the station mean2004: 10.1 C, -0.7 C from the station mean2005: 10.8 C, 0.0 C from the station mean2006: 11.1 C, +0.2 C from the station mean2007: 10.2 C, -0.7 C from the station mean2008: 9.4 C, -1.5 C from the station mean2009: 9.6 C, -1.3 C from the station mean2010: 10.3 C, -0.6 C from the station mean2011: 10.4 C, -0.5 C from the station mean2012: 13.1 C, +2.2 C from the station mean2014: 10.0 C, -0.8 C from the station mean2015: 11.6 C, +0.7 C from the station mean2016: 12.4 C, +1.5 C from the station mean2017: 11.9 C, +1.0 C from the station mean2018: 10.4 C, -0.5 C from the station mean2019: 10.3 C, -0.6 C from the station mean2020: 11.6 C, +0.7 C from the station mean2021: 12.1 C, +1.2 C from the station mean2022: 11.2 C, +0.3 C from the station mean2023: 12.2 C, +1.3 C from the station mean2024: 12.6 C, +1.8 C from the station mean2025: 11.8 C, +0.9 C from the station mean1995200020052010201520202025
One stripe for each of 28 complete years at Valley NWS, 1995 to 2025. Blue stripes are years cooler than the station's own mean of 10.9 C (51.6 F); red stripes are warmer. The coolest year was 1996, at 8.7 C (47.6 F), and the warmest was 2012, at 13.1 C (55.5 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Valley NWS as warming stripes, 1995 to 2025
YearAnnual mean temperatureDifference from the station mean
199510.0 C-0.88 C
19968.7 C-2.23 C
199811.3 C+0.39 C
199910.8 C-0.05 C
200010.3 C-0.54 C
200210.4 C-0.53 C
20039.9 C-0.98 C
200410.1 C-0.74 C
200510.8 C-0.05 C
200611.1 C+0.22 C
200710.2 C-0.69 C
20089.4 C-1.51 C
20099.6 C-1.30 C
201010.3 C-0.56 C
201110.4 C-0.48 C
201213.1 C+2.19 C
201410.0 C-0.85 C
201511.6 C+0.72 C
201612.4 C+1.50 C
201711.9 C+1.04 C
201810.4 C-0.46 C
201910.3 C-0.56 C
202011.6 C+0.68 C
202112.1 C+1.23 C
202211.2 C+0.34 C
202312.2 C+1.32 C
202412.6 C+1.76 C
202511.8 C+0.91 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

1994 to 2026
Yearly extremes at Valley NWS: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.6 C (105.1 F)199536.7 C (98.1 F)33
Coldest night (TNn)-31.1 C (-24.0 F)2021-24.4 C (-11.9 F)33
Wettest day (Rx1day)112.8 mm (4.4 in)201669.1 mm (2.7 in)33
Wettest five days (Rx5day)161.4 mm (6.4 in)2017100.9 mm (4.0 in)33
Longest dry spell (CDD)63 days199928 days33

Hottest day (TXx)

Hottest day (TXx) at Valley NWS by year The hottest day of the year at Valley NWS, 1994 to 2026. The record is 40.6 C (105.1 F) in 1995, marked on the chart; the median year is 36.7 C (98.1 F). 323436384042200020102020Record: 40.6 C (105.1 F) in 1995
The hottest day of the year at Valley NWS, 1994 to 2026. The record is 40.6 C (105.1 F) in 1995, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Valley NWS by year
YearHottest day (TXx)
199433.9 C (93.0 F)
199540.6 C (105.1 F)
199635.0 C (95.0 F)
199736.1 C (97.0 F)
199836.1 C (97.0 F)
199936.1 C (97.0 F)
200039.4 C (102.9 F)
200135.6 C (96.1 F)
200238.3 C (100.9 F)
200337.8 C (100.0 F)
200435.6 C (96.1 F)
200537.2 C (99.0 F)
200637.8 C (100.0 F)
200735.6 C (96.1 F)
200836.7 C (98.1 F)
200935.6 C (96.1 F)
201035.6 C (96.1 F)
201137.8 C (100.0 F)
201240.0 C (104.0 F)
201337.8 C (100.0 F)
201434.4 C (93.9 F)
201535.0 C (95.0 F)
201635.6 C (96.1 F)
201736.7 C (98.1 F)
201836.7 C (98.1 F)
201936.7 C (98.1 F)
202035.6 C (96.1 F)
202138.3 C (100.9 F)
202238.9 C (102.0 F)
202338.9 C (102.0 F)
202437.2 C (99.0 F)
202536.7 C (98.1 F)
202638.9 C (102.0 F)

Coldest night (TNn)

Coldest night (TNn) at Valley NWS by year The coldest night of the year at Valley NWS, 1994 to 2026. The record is -31.1 C (-24.0 F) in 2021, marked on the chart; the median year is -24.4 C (-11.9 F). -35-30-25-20-15200020102020Record: -31.1 C (-24.0 F) in 2021
The coldest night of the year at Valley NWS, 1994 to 2026. The record is -31.1 C (-24.0 F) in 2021, marked on the chart; the median year is -24.4 C (-11.9 F).
Coldest night (TNn) at Valley NWS by year
YearColdest night (TNn)
1994-22.2 C (-8.0 F)
1995-23.3 C (-9.9 F)
1996-30.0 C (-22.0 F)
1997-24.4 C (-11.9 F)
1998-23.3 C (-9.9 F)
1999-23.9 C (-11.0 F)
2000-25.0 C (-13.0 F)
2001-25.0 C (-13.0 F)
2002-19.4 C (-2.9 F)
2003-24.4 C (-11.9 F)
2004-23.9 C (-11.0 F)
2005-25.6 C (-14.1 F)
2006-21.7 C (-7.1 F)
2007-25.6 C (-14.1 F)
2008-24.4 C (-11.9 F)
2009-24.4 C (-11.9 F)
2010-27.2 C (-17.0 F)
2011-22.2 C (-8.0 F)
2012-18.9 C (-2.0 F)
2013-21.1 C (-6.0 F)
2014-23.9 C (-11.0 F)
2015-20.6 C (-5.1 F)
2016-24.4 C (-11.9 F)
2017-25.0 C (-13.0 F)
2018-27.8 C (-18.0 F)
2019-24.4 C (-11.9 F)
2020-20.0 C (-4.0 F)
2021-31.1 C (-24.0 F)
2022-25.6 C (-14.1 F)
2023-17.2 C (1.0 F)
2024-27.8 C (-18.0 F)
2025-27.8 C (-18.0 F)
2026-21.7 C (-7.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Valley NWS by year The wettest day of the year at Valley NWS, 1994 to 2026. The record is 112.8 mm (4.4 in) in 2016, marked on the chart; the median year is 69.1 mm (2.7 in). 20406080100120200020102020Record: 112.8 mm (4.4 in) in 2016
The wettest day of the year at Valley NWS, 1994 to 2026. The record is 112.8 mm (4.4 in) in 2016, marked on the chart; the median year is 69.1 mm (2.7 in).
Wettest day (Rx1day) at Valley NWS by year
YearWettest day (Rx1day)
199435.8 mm (1.4 in)
199536.3 mm (1.4 in)
199643.7 mm (1.7 in)
199785.3 mm (3.4 in)
199878.2 mm (3.1 in)
199967.3 mm (2.6 in)
200088.6 mm (3.5 in)
200150.5 mm (2.0 in)
200256.1 mm (2.2 in)
200343.4 mm (1.7 in)
200469.1 mm (2.7 in)
200579.0 mm (3.1 in)
200681.5 mm (3.2 in)
200788.6 mm (3.5 in)
200870.4 mm (2.8 in)
200964.5 mm (2.5 in)
201052.1 mm (2.1 in)
201143.7 mm (1.7 in)
201250.8 mm (2.0 in)
201343.7 mm (1.7 in)
201476.7 mm (3.0 in)
201559.4 mm (2.3 in)
2016112.8 mm (4.4 in)
201756.4 mm (2.2 in)
201873.2 mm (2.9 in)
201978.2 mm (3.1 in)
202041.1 mm (1.6 in)
2021106.4 mm (4.2 in)
202242.9 mm (1.7 in)
202393.7 mm (3.7 in)
202490.2 mm (3.6 in)
202570.4 mm (2.8 in)
2026107.2 mm (4.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Valley NWS by year The wettest five days of the year at Valley NWS, 1994 to 2026. The record is 161.4 mm (6.4 in) in 2017, marked on the chart; the median year is 100.9 mm (4.0 in). 50100150200200020102020Record: 161.4 mm (6.4 in) in 2017
The wettest five days of the year at Valley NWS, 1994 to 2026. The record is 161.4 mm (6.4 in) in 2017, marked on the chart; the median year is 100.9 mm (4.0 in).
Wettest five days (Rx5day) at Valley NWS by year
YearWettest five days (Rx5day)
199452.6 mm (2.1 in)
199557.2 mm (2.3 in)
199667.0 mm (2.6 in)
1997125.2 mm (4.9 in)
1998111.0 mm (4.4 in)
1999101.5 mm (4.0 in)
2000106.6 mm (4.2 in)
2001129.1 mm (5.1 in)
200297.8 mm (3.9 in)
200376.9 mm (3.0 in)
200474.2 mm (2.9 in)
200595.0 mm (3.7 in)
2006105.7 mm (4.2 in)
2007112.3 mm (4.4 in)
200883.6 mm (3.3 in)
200970.6 mm (2.8 in)
201086.2 mm (3.4 in)
201162.5 mm (2.5 in)
201263.0 mm (2.5 in)
201384.8 mm (3.3 in)
2014150.6 mm (5.9 in)
2015102.8 mm (4.0 in)
2016123.4 mm (4.9 in)
2017161.4 mm (6.4 in)
2018156.0 mm (6.1 in)
201997.0 mm (3.8 in)
202062.5 mm (2.5 in)
2021142.3 mm (5.6 in)
202270.7 mm (2.8 in)
2023126.0 mm (5.0 in)
2024152.4 mm (6.0 in)
2025100.9 mm (4.0 in)
2026116.9 mm (4.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Valley NWS by year The longest dry spell of the year at Valley NWS, 1994 to 2026. The record is 63 days in 1999, marked on the chart; the median year is 28 days. 020406080200020102020Record: 63 days in 1999
The longest dry spell of the year at Valley NWS, 1994 to 2026. The record is 63 days in 1999, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at Valley NWS by year
YearLongest dry spell (CDD)
199423 days
199525 days
199625 days
199727 days
199849 days
199963 days
200028 days
200131 days
200235 days
200321 days
200423 days
200529 days
200626 days
200733 days
200819 days
200937 days
201030 days
201125 days
201235 days
201323 days
201433 days
201530 days
201629 days
201732 days
201823 days
201920 days
202021 days
202129 days
202226 days
202326 days
202428 days
202542 days
202641 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

28 years with a frost

Across 28 years with a frost, the median last spring frost at Valley NWS falls on 18 April and the median first autumn frost on 15 October, which leaves a median of 182 days between them.

Fitted over all years, the growing season changes by +6.8 days per decade at this station.

Frost dates and growing season at Valley NWS
MeasureMedian, all yearsEarliest periodRecent period (1995 to 2025)Recent against earliestFitted trend
Last spring frost18 Apriln/a18 Apriln/a-1.7 days per decade
First autumn frost15 Octobern/a15 Octobern/a+5.2 days per decade
Growing days182 daysn/a182 daysn/a+6.8 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

31 years, 1995 to 2025

A day with at least 66.0 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 121.7 mm (4.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Valley NWS: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years66.0 mm (2.6 in)
5 years84.7 mm (3.3 in)
10 years95.4 mm (3.8 in)
25 years107.2 mm (4.2 in)
50 years114.9 mm (4.5 in)Longer than the 31 years of record
100 years121.7 mm (4.8 in)Longer than the 31 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, 31 years of values from 1995 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: 112.8 mm (4.4 in) in 2016; 106.4 mm (4.2 in) in 2021; 93.7 mm (3.7 in) in 2023.

Download the Data

  • Data for Valley NWS standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Valley NWS 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).