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

Brattleboro Threshold Days by Year (USC00430841)

12 fixed thresholds counted per year at Brattleboro (USC00430841): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Brattleboro Thresholds

  • Brattleboro: days with a maximum temperature at or above 30 C (86 F) in 16 years, most in 1937 with 38.
  • Brattleboro: days with a maximum temperature at or above 90 F (32.2 C) in 16 years, most in 1933 with 17.
  • Brattleboro: days with a maximum temperature at or below 0 C (32 F) in 16 years, most in 1940 with 63.
  • Brattleboro: days with 10 mm (0.39 in) or more of precipitation in 16 years, most in 1928 with 46.
  • 12 fixed thresholds have at least one qualifying day at Brattleboro.
16 years with a qualifying day
Days at or above 30 C (86 F) per year at Brattleboro Days per year at Brattleboro with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 38 in 1937. 0102030401893: 251894: 341895: 261927: 111928: 241930: 361931: 251932: 281933: 341934: 371935: 341936: 241937: 381939: 301940: 231941: 2818931895192819311933193519371940
Days per year at Brattleboro with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 38 in 1937.
Days at or above 30 C (86 F) per year at Brattleboro
YearDaysDecade average
18932528.3
18943428.3
18952628.3
19271117.5
19282417.5
19303631.8
19312531.8
19322831.8
19333431.8
19343731.8
19353431.8
19362431.8
19373831.8
19393031.8
19402325.5
19412825.5
First to last qualifying date each year at Brattleboro For each year, a bar from the first to the last day at Brattleboro meeting 30 C (86 F). 1893: 5 June 1893 to 27 August 18931894: 10 June 1894 to 9 September 18941895: 7 May 1895 to 23 September 18951927: 10 June 1927 to 2 October 19271928: 3 July 1928 to 12 October 19281930: 2 May 1930 to 14 October 19301931: 29 May 1931 to 23 September 19311932: 16 May 1932 to 6 September 19321933: 19 May 1933 to 28 August 19331934: 6 May 1934 to 27 September 19341935: 28 April 1935 to 22 August 19351936: 2 May 1936 to 17 August 19361937: 30 May 1937 to 5 September 19371939: 8 May 1939 to 11 October 19391940: 4 June 1940 to 19 August 19401941: 16 April 1941 to 6 October 194118931895192819311933193519371940JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Brattleboro meeting 30 C (86 F).
First to last qualifying date each year at Brattleboro
YearFirst dateLast date
18931893-06-051893-08-27
18941894-06-101894-09-09
18951895-05-071895-09-23
19271927-06-101927-10-02
19281928-07-031928-10-12
19301930-05-021930-10-14
19311931-05-291931-09-23
19321932-05-161932-09-06
19331933-05-191933-08-28
19341934-05-061934-09-27
19351935-04-281935-08-22
19361936-05-021936-08-17
19371937-05-301937-09-05
19391939-05-081939-10-11
19401940-06-041940-08-19
19411941-04-161941-10-06

Every Fixed Threshold

Fixed thresholds at Brattleboro
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1638193728
35 C (95 F): Days10519314
90 F (32.2 C): Days1617193315
0 C (32 F): Ice days (max1663194047
0 C (32 F): Frost days (min111791936165
-10 C (14 F): Days with min1173193661
-20 C (-4 F): Days with min1020193619
20 C (68 F): Tropical nights (min9819333
10 mm (0.39 in): Days with 10 mm or more rain1646192822
25 mm (0.98 in): Days with 25 mm or more rain161319377
50 mm (1.97 in): Days with 50 mm or more rain13619372
100 mm (3.94 in): Days with 100 mm or more rain1119271

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

  • Data for Brattleboro 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).