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Built 2026-10-19 (19 October 2026)

Grassy Lake Threshold Days by Year (USS0010E15S)

10 fixed thresholds counted per year at Grassy Lake (USS0010E15S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grassy Lake Thresholds

  • Grassy Lake: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1982 with 71.
  • Grassy Lake: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1986 with 19.
  • Grassy Lake: days with a maximum temperature at or below 0 C (32 F) in 35 years, most in 2022 with 121.
  • Grassy Lake: nights with a minimum temperature at or below 0 C (32 F) in 30 years, most in 2008 with 294.
  • 10 fixed thresholds have at least one qualifying day at Grassy Lake.
22 years with a qualifying day
Days at or above 30 C (86 F) per year at Grassy Lake Days per year at Grassy Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 17 in 2003. 051015201989: 21990: 21994: 22000: 32001: 32002: 52003: 172005: 32006: 62007: 152012: 22013: 52015: 42016: 12017: 32018: 32020: 12021: 52022: 52023: 22024: 42026: 119892000200320072015201820222026
Days per year at Grassy Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 17 in 2003.
Days at or above 30 C (86 F) per year at Grassy Lake
YearDaysDecade average
198922
199022
199422
200037.4
200137.4
200257.4
2003177.4
200537.4
200667.4
2007157.4
201223
201353
201543
201613
201733
201833
202013
202153
202253
202323
202443
202613
First to last qualifying date each year at Grassy Lake For each year, a bar from the first to the last day at Grassy Lake meeting 30 C (86 F). 1989: 20 July 1989 to 31 July 19891990: 7 August 1990 to 8 August 19901994: 22 July 1994 to 5 August 19942000: 30 July 2000 to 1 August 20002001: 6 August 2001 to 8 August 20012002: 11 July 2002 to 15 July 20022003: 15 July 2003 to 15 August 20032005: 13 July 2005 to 7 August 20052006: 15 July 2006 to 29 July 20062007: 4 July 2007 to 14 August 20072012: 12 July 2012 to 9 August 20122013: 29 June 2013 to 17 August 20132015: 27 June 2015 to 2 August 20152016: 21 July 2016 to 21 July 20162017: 5 July 2017 to 3 September 20172018: 9 August 2018 to 11 August 20182020: 17 August 2020 to 17 August 20202021: 18 July 2021 to 14 August 20212022: 31 July 2022 to 6 September 20222023: 23 July 2023 to 29 July 20232024: 11 July 2024 to 3 August 20242026: 21 August 2026 to 21 August 202619892000200320072015201820222026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Grassy Lake meeting 30 C (86 F).
First to last qualifying date each year at Grassy Lake
YearFirst dateLast date
19891989-07-201989-07-31
19901990-08-071990-08-08
19941994-07-221994-08-05
20002000-07-302000-08-01
20012001-08-062001-08-08
20022002-07-112002-07-15
20032003-07-152003-08-15
20052005-07-132005-08-07
20062006-07-152006-07-29
20072007-07-042007-08-14
20122012-07-122012-08-09
20132013-06-292013-08-17
20152015-06-272015-08-02
20162016-07-212016-07-21
20172017-07-052017-09-03
20182018-08-092018-08-11
20202020-08-172020-08-17
20212021-07-182021-08-14
20222022-07-312022-09-06
20232023-07-232023-07-29
20242024-07-112024-08-03
20262026-08-212026-08-21

Every Fixed Threshold

Fixed thresholds at Grassy Lake
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days221720031
90 F (32.2 C): Days7420031
0 C (32 F): Ice days (max35121202222
0 C (32 F): Frost days (min30294200865
-10 C (14 F): Days with min30141200826
-20 C (-4 F): Days with min305120228
-30 C (-22 F): Days with min20620132
10 mm (0.39 in): Days with 10 mm or more rain4671198229
25 mm (0.98 in): Days with 25 mm or more rain461919865
50 mm (1.97 in): Days with 50 mm or more rain13219972

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1989.

Download the Data

  • Data for Grassy Lake 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). Threshold counts are computed by this site.

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