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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Beloit Threshold Days by Year

12 fixed thresholds counted per year at Beloit (USC00330600): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Beloit Thresholds

  • Beloit: days with a maximum temperature at or above 30 C (86 F) in 5 years, most in 1913 with 51.
  • Beloit: days with a maximum temperature at or above 90 F (32.2 C) in 5 years, most in 1913 with 23.
  • Beloit: days with a maximum temperature at or below 0 C (32 F) in 5 years, most in 1912 with 67.
  • Beloit: nights with a minimum temperature at or below 0 C (32 F) in 5 years, most in 1917 with 164.
  • 12 fixed thresholds have at least one qualifying day at Beloit.
5 years with a qualifying day
Days at or above 30 C (86 F) per year at Beloit Days per year at Beloit with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 51 in 1913. 02040601912: 251913: 511914: 411915: 161917: 2119121913191419151917
Days per year at Beloit with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 51 in 1913.
Days at or above 30 C (86 F) per year at Beloit
YearDaysDecade average
19122530.8
19135130.8
19144130.8
19151630.8
19172130.8
First to last qualifying date each year at Beloit For each year, a bar from the first to the last day at Beloit meeting 30 C (86 F). 1912: 28 May 1912 to 10 September 19121913: 4 May 1913 to 7 September 19131914: 25 May 1914 to 22 September 19141915: 7 June 1915 to 16 September 19151917: 26 June 1917 to 21 August 191719121913191419151917JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Beloit meeting 30 C (86 F).
First to last qualifying date each year at Beloit
YearFirst dateLast date
19121912-05-281912-09-10
19131913-05-041913-09-07
19141914-05-251914-09-22
19151915-06-071915-09-16
19171917-06-261917-08-21

Every Fixed Threshold

Fixed thresholds at Beloit
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days551191321
35 C (95 F): Days4319121
90 F (32.2 C): Days52319137
0 C (32 F): Ice days (max567191262
0 C (32 F): Frost days (min51641917164
-10 C (14 F): Days with min554191245
-20 C (-4 F): Days with min414191714
-30 C (-22 F): Days with min1119121
20 C (68 F): Tropical nights (min3519134
10 mm (0.39 in): Days with 10 mm or more rain538191529
25 mm (0.98 in): Days with 25 mm or more rain51119136
50 mm (1.97 in): Days with 50 mm or more rain2119141

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1912.

Download the Data

  • Data for Beloit 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 (2025-12-31).