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

Chassiron Threshold Days by Year (FRM00007314)

8 fixed thresholds counted per year at Chassiron (FRM00007314): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chassiron Thresholds

  • Chassiron: days with a maximum temperature at or above 30 C (86 F) in 21 years, most in 2003 with 8.
  • Chassiron: days with 10 mm (0.39 in) or more of precipitation in 16 years, most in 2014 with 28.
  • Chassiron: days with 25 mm (0.98 in) or more of precipitation in 13 years, most in 2014 with 4.
  • Chassiron: days with a maximum temperature at or above 90 F (32.2 C) in 11 years, most in 2003 with 4.
  • 8 fixed thresholds have at least one qualifying day at Chassiron.
21 years with a qualifying day
Days at or above 30 C (86 F) per year at Chassiron Days per year at Chassiron with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 8 in 2003. 024681992: 21995: 31996: 11997: 21998: 21999: 22000: 32001: 12002: 12003: 82004: 32005: 32011: 22012: 42013: 12014: 12015: 12016: 52018: 12019: 52023: 51992199720002003201120142018
Days per year at Chassiron with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 8 in 2003.
Days at or above 30 C (86 F) per year at Chassiron
YearDaysDecade average
199222
199532
199612
199722
199822
199922
200033.2
200113.2
200213.2
200383.2
200433.2
200533.2
201122.5
201242.5
201312.5
201412.5
201512.5
201652.5
201812.5
201952.5
202355
First to last qualifying date each year at Chassiron For each year, a bar from the first to the last day at Chassiron meeting 30 C (86 F). 1992: 28 June 1992 to 8 August 19921995: 19 July 1995 to 25 July 19951996: 22 July 1996 to 22 July 19961997: 9 August 1997 to 10 August 19971998: 20 June 1998 to 31 August 19981999: 2 July 1999 to 26 July 19992000: 16 June 2000 to 19 June 20002001: 25 June 2001 to 25 June 20012002: 16 May 2002 to 16 May 20022003: 21 June 2003 to 10 August 20032004: 1 August 2004 to 8 September 20042005: 18 June 2005 to 27 July 20052011: 26 June 2011 to 27 June 20112012: 27 June 2012 to 17 August 20122013: 20 July 2013 to 20 July 20132014: 17 July 2014 to 17 July 20142015: 30 June 2015 to 30 June 20152016: 22 June 2016 to 25 August 20162018: 3 August 2018 to 3 August 20182019: 26 June 2019 to 23 August 20192023: 7 July 2023 to 4 September 20231992199720002003201120142018JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Chassiron meeting 30 C (86 F).
First to last qualifying date each year at Chassiron
YearFirst dateLast date
19921992-06-281992-08-08
19951995-07-191995-07-25
19961996-07-221996-07-22
19971997-08-091997-08-10
19981998-06-201998-08-31
19991999-07-021999-07-26
20002000-06-162000-06-19
20012001-06-252001-06-25
20022002-05-162002-05-16
20032003-06-212003-08-10
20042004-08-012004-09-08
20052005-06-182005-07-27
20112011-06-262011-06-27
20122012-06-272012-08-17
20132013-07-202013-07-20
20142014-07-172014-07-17
20152015-06-302015-06-30
20162016-06-222016-08-25
20182018-08-032018-08-03
20192019-06-262019-08-23
20232023-07-072023-09-04

Every Fixed Threshold

Fixed thresholds at Chassiron
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days21820035
35 C (95 F): Days2220192
90 F (32.2 C): Days11420034
0 C (32 F): Ice days (max5219971
0 C (32 F): Frost days (min1519985
10 mm (0.39 in): Days with 10 mm or more rain1628201419
25 mm (0.98 in): Days with 25 mm or more rain13420141
50 mm (1.97 in): Days with 50 mm or more rain1120181

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1992.

Download the Data

  • Data for Chassiron 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).