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Built 2026-10-19 (19 October 2026)

Gustavus Threshold Days by Year (USW00025322)

12 fixed thresholds counted per year at Gustavus (USW00025322): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Gustavus Thresholds

  • Gustavus: days with a maximum temperature at or below 0 C (32 F) in 54 years, most in 1951 with 78.
  • Gustavus: days with 10 mm (0.39 in) or more of precipitation in 53 years, most in 2008 with 65.
  • Gustavus: nights with a minimum temperature at or below 0 C (32 F) in 52 years, most in 2012 with 191.
  • Gustavus: nights with a minimum temperature at or below -10 C (14 F) in 52 years, most in 1950 with 62.
  • 12 fixed thresholds have at least one qualifying day at Gustavus.
5 years with a qualifying day
Days at or above 30 C (86 F) per year at Gustavus Days per year at Gustavus with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 2 in 2009. 011221956: 11957: 12004: 12009: 22012: 119561957200420092012
Days per year at Gustavus with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 2 in 2009.
Days at or above 30 C (86 F) per year at Gustavus
YearDaysDecade average
195611
195711
200411.5
200921.5
201211
First to last qualifying date each year at Gustavus For each year, a bar from the first to the last day at Gustavus meeting 30 C (86 F). 1956: 14 July 1956 to 14 July 19561957: 8 August 1957 to 8 August 19572004: 20 June 2004 to 20 June 20042009: 7 July 2009 to 8 July 20092012: 24 June 2012 to 24 June 201219561957200420092012JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Gustavus meeting 30 C (86 F).
First to last qualifying date each year at Gustavus
YearFirst dateLast date
19561956-07-141956-07-14
19571957-08-081957-08-08
20042004-06-202004-06-20
20092009-07-072009-07-08
20122012-06-242012-06-24

Every Fixed Threshold

Fixed thresholds at Gustavus
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days5220091
0 C (32 F): Ice days (max5478195123
0 C (32 F): Frost days (min52191201279
-10 C (14 F): Days with min5262195014
-20 C (-4 F): Days with min401419501
20 C (68 F): Tropical nights (min1119901
10 mm (0.39 in): Days with 10 mm or more rain536520088
25 mm (0.98 in): Days with 25 mm or more rain521320049
50 mm (1.97 in): Days with 50 mm or more rain26319441
10 cm (3.9 in): Days with 10 cm or more snowfall461219489
25 cm (9.8 in): Days with 25 cm or more snowfall20220062
50 cm (19.7 in): Days with 50 cm or more snowfall1119571

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1956.

Download the Data

  • Data for Gustavus 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).