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Built 2026-10-19 (19 October 2026)

Surprise Lakes Threshold Days by Year (USS0021C13S)

15 fixed thresholds counted per year at Surprise Lakes (USS0021C13S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Surprise Lakes Thresholds

  • Surprise Lakes: days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 1996 with 121.
  • Surprise Lakes: days with 25 mm (0.98 in) or more of precipitation in 45 years, most in 1996 with 55.
  • Surprise Lakes: days with 50 mm (1.97 in) or more of precipitation in 45 years, most in 1996 with 13.
  • Surprise Lakes: days with a maximum temperature at or below 0 C (32 F) in 37 years, most in 1985 with 81.
  • 15 fixed thresholds have at least one qualifying day at Surprise Lakes.
25 years with a qualifying day
Days at or above 30 C (86 F) per year at Surprise Lakes Days per year at Surprise Lakes with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 55 in 1987. 02040601985: 101986: 401987: 551990: 21992: 91994: 31996: 71998: 92000: 12001: 32002: 52003: 82004: 32005: 12006: 52009: 22015: 42017: 22020: 12021: 52022: 72023: 22024: 22025: 12026: 1198519901996200120042009202020232026
Days per year at Surprise Lakes with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 55 in 1987.
Days at or above 30 C (86 F) per year at Surprise Lakes
YearDaysDecade average
19851035
19864035
19875535
199026
199296
199436
199676
199896
200013.5
200133.5
200253.5
200383.5
200433.5
200513.5
200653.5
200923.5
201543
201723
202012.7
202152.7
202272.7
202322.7
202422.7
202512.7
202612.7
First to last qualifying date each year at Surprise Lakes For each year, a bar from the first to the last day at Surprise Lakes meeting 30 C (86 F). 1985: 18 June 1985 to 25 September 19851986: 7 April 1986 to 7 October 19861987: 27 April 1987 to 30 September 19871990: 11 July 1990 to 8 August 19901992: 21 June 1992 to 17 August 19921994: 20 July 1994 to 22 July 19941996: 14 July 1996 to 25 August 19961998: 22 July 1998 to 3 September 19982000: 30 July 2000 to 30 July 20002001: 12 August 2001 to 15 August 20012002: 26 June 2002 to 13 August 20022003: 21 July 2003 to 4 September 20032004: 24 July 2004 to 13 August 20042005: 27 July 2005 to 27 July 20052006: 26 June 2006 to 24 July 20062009: 28 July 2009 to 1 August 20092015: 26 June 2015 to 1 August 20152017: 2 September 2017 to 3 September 20172020: 30 July 2020 to 30 July 20202021: 27 June 2021 to 13 August 20212022: 26 July 2022 to 8 August 20222023: 15 August 2023 to 16 August 20232024: 8 July 2024 to 9 July 20242025: 25 August 2025 to 25 August 20252026: 22 July 2026 to 22 July 20261985199220002004201520222026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Surprise Lakes meeting 30 C (86 F).
First to last qualifying date each year at Surprise Lakes
YearFirst dateLast date
19851985-06-181985-09-25
19861986-04-071986-10-07
19871987-04-271987-09-30
19901990-07-111990-08-08
19921992-06-211992-08-17
19941994-07-201994-07-22
19961996-07-141996-08-25
19981998-07-221998-09-03
20002000-07-302000-07-30
20012001-08-122001-08-15
20022002-06-262002-08-13
20032003-07-212003-09-04
20042004-07-242004-08-13
20052005-07-272005-07-27
20062006-06-262006-07-24
20092009-07-282009-08-01
20152015-06-262015-08-01
20172017-09-022017-09-03
20202020-07-302020-07-30
20212021-06-272021-08-13
20222022-07-262022-08-08
20232023-08-152023-08-16
20242024-07-082024-07-09
20252025-08-252025-08-25
20262026-07-222026-07-22

Every Fixed Threshold

Fixed thresholds at Surprise Lakes
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days255519871
35 C (95 F): Days42719871
40 C (104 F): Days2719863
90 F (32.2 C): Days134019872
100 F (37.8 C): Days21619868
0 C (32 F): Ice days (max378119856
0 C (32 F): Frost days (min33214199970
-10 C (14 F): Days with min301619964
-20 C (-4 F): Days with min4319983
20 C (68 F): Tropical nights (min1220212
10 mm (0.39 in): Days with 10 mm or more rain45121199644
25 mm (0.98 in): Days with 25 mm or more rain4555199618
50 mm (1.97 in): Days with 50 mm or more rain451319963
100 mm (3.94 in): Days with 100 mm or more rain14119861
200 mm (7.87 in): Days with 200 mm or more rain10n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1985.

Download the Data

  • Data for Surprise Lakes 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).