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Built 2026-10-19 (19 October 2026)

Hawthorne Threshold Days by Year (USC00263512)

14 fixed thresholds counted per year at Hawthorne (USC00263512): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hawthorne Thresholds

  • Hawthorne: days with 10 mm (0.39 in) or more of precipitation in 28 years, most in 1962 with 6.
  • Hawthorne: nights with a minimum temperature at or below 0 C (32 F) in 23 years, most in 1964 with 147.
  • Hawthorne: nights with a minimum temperature at or above 20 C (68 F) in 23 years, most in 2021 with 37.
  • Hawthorne: days with a maximum temperature at or above 30 C (86 F) in 22 years, most in 2024 with 123.
  • 14 fixed thresholds have at least one qualifying day at Hawthorne.
22 years with a qualifying day
Days at or above 30 C (86 F) per year at Hawthorne Days per year at Hawthorne with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 123 in 2024. 0501001501962: 1081963: 971964: 1031994: 1121995: 922004: 1062005: 942007: 1142009: 932010: 872011: 902012: 1152013: 1072014: 1142019: 822020: 1182021: 1222022: 1082023: 862024: 1232025: 1082026: 10219621994200520102013202020232026
Days per year at Hawthorne with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 123 in 2024.
Days at or above 30 C (86 F) per year at Hawthorne
YearDaysDecade average
1962108102.7
196397102.7
1964103102.7
1994112102
199592102
2004106101.8
200594101.8
2007114101.8
200993101.8
20108799.2
20119099.2
201211599.2
201310799.2
201411499.2
20198299.2
2020118109.6
2021122109.6
2022108109.6
202386109.6
2024123109.6
2025108109.6
2026102109.6
First to last qualifying date each year at Hawthorne For each year, a bar from the first to the last day at Hawthorne meeting 30 C (86 F). 1962: 13 April 1962 to 10 October 19621963: 17 May 1963 to 3 October 19631964: 12 May 1964 to 8 October 19641994: 20 April 1994 to 28 September 19941995: 30 May 1995 to 10 October 19952004: 2 May 2004 to 8 October 20042005: 20 May 2005 to 1 October 20052007: 28 April 2007 to 15 September 20072009: 16 May 2009 to 29 September 20092010: 4 June 2010 to 2 October 20102011: 14 June 2011 to 2 October 20112012: 21 April 2012 to 3 October 20122013: 11 May 2013 to 21 September 20132014: 2 May 2014 to 26 September 20142019: 4 June 2019 to 27 September 20192020: 28 April 2020 to 7 October 20202021: 29 April 2021 to 27 September 20212022: 25 March 2022 to 29 September 20222023: 28 April 2023 to 16 October 20232024: 13 May 2024 to 9 October 20242025: 8 May 2025 to 27 September 20252026: 18 March 2026 to 2 October 202619621994200520102013202020232026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Hawthorne meeting 30 C (86 F).
First to last qualifying date each year at Hawthorne
YearFirst dateLast date
19621962-04-131962-10-10
19631963-05-171963-10-03
19641964-05-121964-10-08
19941994-04-201994-09-28
19951995-05-301995-10-10
20042004-05-022004-10-08
20052005-05-202005-10-01
20072007-04-282007-09-15
20092009-05-162009-09-29
20102010-06-042010-10-02
20112011-06-142011-10-02
20122012-04-212012-10-03
20132013-05-112013-09-21
20142014-05-022014-09-26
20192019-06-042019-09-27
20202020-04-282020-10-07
20212021-04-292021-09-27
20222022-03-252022-09-29
20232023-04-282023-10-16
20242024-05-132024-10-09
20252025-05-082025-09-27
20262026-03-182026-10-02

Every Fixed Threshold

Fixed thresholds at Hawthorne
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days221232024102
35 C (95 F): Days2271202161
40 C (104 F): Days118201311
90 F (32.2 C): Days2298202484
100 F (37.8 C): Days2234202129
110 F (43.3 C): Days1120231
0 C (32 F): Ice days (max191820131
0 C (32 F): Frost days (min23147196451
-10 C (14 F): Days with min192420131
20 C (68 F): Tropical nights (min2337202126
25 C (77 F): Days with min3119951
10 mm (0.39 in): Days with 10 mm or more rain28619621
25 mm (0.98 in): Days with 25 mm or more rain4319621
10 cm (3.9 in): Days with 10 cm or more snowfall6320231

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1962.

Download the Data

  • Data for Hawthorne 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).