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Built 2026-10-19 (19 October 2026)

Fitchburg Muni AP Threshold Days by Year (USW00004780)

14 fixed thresholds counted per year at Fitchburg Muni AP (USW00004780): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Fitchburg Muni AP Thresholds

  • Fitchburg Muni AP: days with a maximum temperature at or above 30 C (86 F) in 28 years, most in 2016 with 62.
  • Fitchburg Muni AP: days with a maximum temperature at or above 90 F (32.2 C) in 28 years, most in 2002 with 30.
  • Fitchburg Muni AP: days with a maximum temperature at or below 0 C (32 F) in 28 years, most in 2003 with 52.
  • Fitchburg Muni AP: nights with a minimum temperature at or below 0 C (32 F) in 28 years, most in 2001 with 148.
  • 14 fixed thresholds have at least one qualifying day at Fitchburg Muni AP.
28 years with a qualifying day
Days at or above 30 C (86 F) per year at Fitchburg Muni AP Days per year at Fitchburg Muni AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 62 in 2016. 0204060801998: 221999: 442000: 162001: 352002: 432003: 222004: 192005: 392006: 262007: 412008: 202009: 232010: 542011: 412012: 412013: 312014: 372015: 512016: 622017: 452018: 422019: 322020: 512021: 342022: 472023: 352024: 432025: 341998200120042007201020132016201920222025
Days per year at Fitchburg Muni AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 62 in 2016.
Days at or above 30 C (86 F) per year at Fitchburg Muni AP
YearDaysDecade average
19982233
19994433
20001628.4
20013528.4
20024328.4
20032228.4
20041928.4
20053928.4
20062628.4
20074128.4
20082028.4
20092328.4
20105443.6
20114143.6
20124143.6
20133143.6
20143743.6
20155143.6
20166243.6
20174543.6
20184243.6
20193243.6
20205140.7
20213440.7
20224740.7
20233540.7
20244340.7
20253440.7
First to last qualifying date each year at Fitchburg Muni AP For each year, a bar from the first to the last day at Fitchburg Muni AP meeting 30 C (86 F). 1998: 28 March 1998 to 20 September 19981999: 29 May 1999 to 4 September 19992000: 7 May 2000 to 1 September 20002001: 24 April 2001 to 9 September 20012002: 16 April 2002 to 14 September 20022003: 24 June 2003 to 22 August 20032004: 19 April 2004 to 30 August 20042005: 20 April 2005 to 14 September 20052006: 29 May 2006 to 7 August 20062007: 23 April 2007 to 6 October 20072008: 27 May 2008 to 5 September 20082009: 25 April 2009 to 26 August 20092010: 7 April 2010 to 24 September 20102011: 27 May 2011 to 9 October 20112012: 16 April 2012 to 7 September 20122013: 30 May 2013 to 12 September 20132014: 12 May 2014 to 28 September 20142015: 4 May 2015 to 18 September 20152016: 25 May 2016 to 22 September 20162017: 11 April 2017 to 27 September 20172018: 2 May 2018 to 16 September 20182019: 26 May 2019 to 23 September 20192020: 26 May 2020 to 9 September 20202021: 21 May 2021 to 30 August 20212022: 13 May 2022 to 10 September 20222023: 13 April 2023 to 9 September 20232024: 21 May 2024 to 17 September 20242025: 3 May 2025 to 17 August 20251998200220062010201420182022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Fitchburg Muni AP meeting 30 C (86 F).
First to last qualifying date each year at Fitchburg Muni AP
YearFirst dateLast date
19981998-03-281998-09-20
19991999-05-291999-09-04
20002000-05-072000-09-01
20012001-04-242001-09-09
20022002-04-162002-09-14
20032003-06-242003-08-22
20042004-04-192004-08-30
20052005-04-202005-09-14
20062006-05-292006-08-07
20072007-04-232007-10-06
20082008-05-272008-09-05
20092009-04-252009-08-26
20102010-04-072010-09-24
20112011-05-272011-10-09
20122012-04-162012-09-07
20132013-05-302013-09-12
20142014-05-122014-09-28
20152015-05-042015-09-18
20162016-05-252016-09-22
20172017-04-112017-09-27
20182018-05-022018-09-16
20192019-05-262019-09-23
20202020-05-262020-09-09
20212021-05-212021-08-30
20222022-05-132022-09-10
20232023-04-132023-09-09
20242024-05-212024-09-17
20252025-05-032025-08-17

Every Fixed Threshold

Fixed thresholds at Fitchburg Muni AP
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2862201634
35 C (95 F): Days20820164
90 F (32.2 C): Days2830200223
100 F (37.8 C): Days4120061
0 C (32 F): Ice days (max2852200342
0 C (32 F): Frost days (min281482001146
-10 C (14 F): Days with min2855200335
-20 C (-4 F): Days with min16920152
20 C (68 F): Tropical nights (min2827201313
25 C (77 F): Days with min4120061
10 mm (0.39 in): Days with 10 mm or more rain2651200831
25 mm (0.98 in): Days with 25 mm or more rain2619201810
50 mm (1.97 in): Days with 50 mm or more rain21520013
100 mm (3.94 in): Days with 100 mm or more rain2120011

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1998.

Download the Data

  • Data for Fitchburg Muni AP 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).