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

Idalia Threshold Days by Year (USC00054242)

16 fixed thresholds counted per year at Idalia (USC00054242): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Idalia Thresholds

  • Idalia: days with 10 mm (0.39 in) or more of precipitation in 64 years, most in 1944 with 23.
  • Idalia: days with 25 mm (0.98 in) or more of precipitation in 62 years, most in 1957 with 8.
  • Idalia: days with 10 cm (3.9 in) or more of snowfall in 42 years, most in 1944 with 9.
  • Idalia: days with 50 mm (1.97 in) or more of precipitation in 30 years, most in 1948 with 2.
  • 16 fixed thresholds have at least one qualifying day at Idalia.
24 years with a qualifying day
Days at or above 30 C (86 F) per year at Idalia Days per year at Idalia with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 91 in 2020. 02550751001988: 641991: 451992: 361993: 371995: 571996: 531997: 741998: 731999: 582000: 872001: 812002: 772003: 772005: 792007: 712009: 502013: 722014: 552015: 792016: 642017: 692018: 712019: 682020: 9119881993199720002003200920152018
Days per year at Idalia with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 91 in 2020.
Days at or above 30 C (86 F) per year at Idalia
YearDaysDecade average
19886464
19914554.1
19923654.1
19933754.1
19955754.1
19965354.1
19977454.1
19987354.1
19995854.1
20008774.6
20018174.6
20027774.6
20037774.6
20057974.6
20077174.6
20095074.6
20137268.3
20145568.3
20157968.3
20166468.3
20176968.3
20187168.3
20196868.3
20209191
First to last qualifying date each year at Idalia For each year, a bar from the first to the last day at Idalia meeting 30 C (86 F). 1988: 13 May 1988 to 25 September 19881991: 15 May 1991 to 18 October 19911992: 30 April 1992 to 3 October 19921993: 7 June 1993 to 5 October 19931995: 7 June 1995 to 15 October 19951996: 11 April 1996 to 14 October 19961997: 7 May 1997 to 11 October 19971998: 14 May 1998 to 30 September 19981999: 20 May 1999 to 13 October 19992000: 19 April 2000 to 19 September 20002001: 30 April 2001 to 3 October 20012002: 16 April 2002 to 9 September 20022003: 28 May 2003 to 30 October 20032005: 11 May 2005 to 4 October 20052007: 30 April 2007 to 21 October 20072009: 19 May 2009 to 1 October 20092013: 14 May 2013 to 26 September 20132014: 4 May 2014 to 25 September 20142015: 2 June 2015 to 12 October 20152016: 23 May 2016 to 4 October 20162017: 8 May 2017 to 23 September 20172018: 11 May 2018 to 4 October 20182019: 21 April 2019 to 1 October 20192020: 2 May 2020 to 10 October 202019881993199720002003200920152018JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Idalia meeting 30 C (86 F).
First to last qualifying date each year at Idalia
YearFirst dateLast date
19881988-05-131988-09-25
19911991-05-151991-10-18
19921992-04-301992-10-03
19931993-06-071993-10-05
19951995-06-071995-10-15
19961996-04-111996-10-14
19971997-05-071997-10-11
19981998-05-141998-09-30
19991999-05-201999-10-13
20002000-04-192000-09-19
20012001-04-302001-10-03
20022002-04-162002-09-09
20032003-05-282003-10-30
20052005-05-112005-10-04
20072007-04-302007-10-21
20092009-05-192009-10-01
20132013-05-142013-09-26
20142014-05-042014-09-25
20152015-06-022015-10-12
20162016-05-232016-10-04
20172017-05-082017-09-23
20182018-05-112018-10-04
20192019-04-212019-10-01
20202020-05-022020-10-10

Every Fixed Threshold

Fixed thresholds at Idalia
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2491202091
35 C (95 F): Days2438200032
40 C (104 F): Days6220051
90 F (32.2 C): Days2471200060
100 F (37.8 C): Days211120051
0 C (32 F): Ice days (max2447199324
0 C (32 F): Frost days (min211792019167
-10 C (14 F): Days with min2158200731
-20 C (-4 F): Days with min161219965
20 C (68 F): Tropical nights (min9520012
10 mm (0.39 in): Days with 10 mm or more rain642319447
25 mm (0.98 in): Days with 25 mm or more rain62819572
50 mm (1.97 in): Days with 50 mm or more rain30219481
100 mm (3.94 in): Days with 100 mm or more rain3119461
10 cm (3.9 in): Days with 10 cm or more snowfall42919443
25 cm (9.8 in): Days with 25 cm or more snowfall5219442

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1988.

Download the Data

  • Data for Idalia 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).