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Built 2026-10-19 (19 October 2026)

Hart Threshold Days by Year (USC00413972)

17 fixed thresholds counted per year at Hart (USC00413972): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hart Thresholds

  • Hart: days with 10 mm (0.39 in) or more of precipitation in 65 years, most in 2015 with 28.
  • Hart: days with 25 mm (0.98 in) or more of precipitation in 62 years, most in 2015 with 12.
  • Hart: days with a maximum temperature at or above 30 C (86 F) in 40 years, most in 2011 with 140.
  • Hart: days with a maximum temperature at or above 35 C (95 F) in 40 years, most in 2011 with 86.
  • 17 fixed thresholds have at least one qualifying day at Hart.
40 years with a qualifying day
Days at or above 30 C (86 F) per year at Hart Days per year at Hart with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 140 in 2011. 0501001501987: 821988: 831989: 961990: 981991: 831992: 741993: 1011994: 991995: 871996: 881997: 921998: 1291999: 992000: 1162001: 1082002: 1132003: 972004: 852005: 1032006: 1152007: 862008: 922009: 852010: 1162011: 1402012: 1322013: 1012014: 822015: 902016: 932017: 772018: 1082019: 1002020: 1342021: 802022: 1112023: 982024: 1232025: 1032026: 1261987199119951999200320072011201520192023
Days per year at Hart with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 140 in 2011.
Days at or above 30 C (86 F) per year at Hart
YearDaysDecade average
19878287
19888387
19899687
19909895
19918395
19927495
199310195
19949995
19958795
19968895
19979295
199812995
19999995
2000116100
2001108100
2002113100
200397100
200485100
2005103100
2006115100
200786100
200892100
200985100
2010116103.9
2011140103.9
2012132103.9
2013101103.9
201482103.9
201590103.9
201693103.9
201777103.9
2018108103.9
2019100103.9
2020134110.7
202180110.7
2022111110.7
202398110.7
2024123110.7
2025103110.7
2026126110.7
First to last qualifying date each year at Hart For each year, a bar from the first to the last day at Hart meeting 30 C (86 F). 1987: 18 April 1987 to 9 October 19871988: 7 May 1988 to 18 October 19881989: 11 March 1989 to 16 October 19891990: 17 April 1990 to 17 October 19901991: 8 April 1991 to 18 October 19911992: 11 April 1992 to 14 October 19921993: 19 April 1993 to 6 October 19931994: 18 April 1994 to 4 October 19941995: 22 March 1995 to 19 October 19951996: 18 April 1996 to 13 October 19961997: 22 March 1997 to 19 October 19971998: 26 March 1998 to 18 October 19981999: 21 April 1999 to 25 October 19992000: 6 April 2000 to 4 October 20002001: 5 April 2001 to 9 October 20012002: 14 March 2002 to 12 October 20022003: 2 April 2003 to 30 October 20032004: 20 March 2004 to 22 October 20042005: 10 May 2005 to 19 October 20052006: 1 March 2006 to 10 November 20062007: 5 May 2007 to 21 October 20072008: 16 April 2008 to 11 October 20082009: 5 March 2009 to 20 October 20092010: 31 March 2010 to 31 October 20102011: 18 March 2011 to 18 October 20112012: 16 March 2012 to 25 October 20122013: 16 March 2013 to 4 October 20132014: 10 April 2014 to 17 October 20142015: 8 April 2015 to 16 October 20152016: 19 February 2016 to 1 November 20162017: 20 March 2017 to 14 October 20172018: 24 March 2018 to 6 October 20182019: 10 April 2019 to 28 September 20192020: 28 April 2020 to 23 October 20202021: 3 May 2021 to 10 October 20212022: 28 March 2022 to 25 September 20222023: 8 May 2023 to 7 November 20232024: 1 May 2024 to 29 October 20242025: 4 February 2025 to 6 October 20252026: 20 March 2026 to 29 September 202619871992199720022007201220172022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Hart meeting 30 C (86 F).
First to last qualifying date each year at Hart
YearFirst dateLast date
19871987-04-181987-10-09
19881988-05-071988-10-18
19891989-03-111989-10-16
19901990-04-171990-10-17
19911991-04-081991-10-18
19921992-04-111992-10-14
19931993-04-191993-10-06
19941994-04-181994-10-04
19951995-03-221995-10-19
19961996-04-181996-10-13
19971997-03-221997-10-19
19981998-03-261998-10-18
19991999-04-211999-10-25
20002000-04-062000-10-04
20012001-04-052001-10-09
20022002-03-142002-10-12
20032003-04-022003-10-30
20042004-03-202004-10-22
20052005-05-102005-10-19
20062006-03-012006-11-10
20072007-05-052007-10-21
20082008-04-162008-10-11
20092009-03-052009-10-20
20102010-03-312010-10-31
20112011-03-182011-10-18
20122012-03-162012-10-25
20132013-03-162013-10-04
20142014-04-102014-10-17
20152015-04-082015-10-16
20162016-02-192016-11-01
20172017-03-202017-10-14
20182018-03-242018-10-06
20192019-04-102019-09-28
20202020-04-282020-10-23
20212021-05-032021-10-10
20222022-03-282022-09-25
20232023-05-082023-11-07
20242024-05-012024-10-29
20252025-02-042025-10-06
20262026-03-202026-09-29

Every Fixed Threshold

Fixed thresholds at Hart
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days401402011126
35 C (95 F): Days4086201170
40 C (104 F): Days14720111
90 F (32.2 C): Days401242011108
100 F (37.8 C): Days3334201119
110 F (43.3 C): Days2119941
0 C (32 F): Ice days (max401920154
0 C (32 F): Frost days (min40147201955
-10 C (14 F): Days with min404120229
-20 C (-4 F): Days with min7219872
20 C (68 F): Tropical nights (min3213201112
10 mm (0.39 in): Days with 10 mm or more rain6528201511
25 mm (0.98 in): Days with 25 mm or more rain621220155
50 mm (1.97 in): Days with 50 mm or more rain32319711
100 mm (3.94 in): Days with 100 mm or more rain2119651
10 cm (3.9 in): Days with 10 cm or more snowfall12320151
25 cm (9.8 in): Days with 25 cm or more snowfall1120041

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1987.

Download the Data

  • Data for Hart 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 (2026-10-17).