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Built 2026-10-19 (19 October 2026)

Harper 3ENE Threshold Days by Year (USC00413954)

15 fixed thresholds counted per year at Harper 3ENE (USC00413954): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Harper 3ENE Thresholds

  • Harper 3ENE: days with 10 mm (0.39 in) or more of precipitation in 79 years, most in 1968 with 31.
  • Harper 3ENE: days with 25 mm (0.98 in) or more of precipitation in 79 years, most in 1957 with 14.
  • Harper 3ENE: days with 50 mm (1.97 in) or more of precipitation in 69 years, most in 1990 with 5.
  • Harper 3ENE: days with 100 mm (3.94 in) or more of precipitation in 22 years, most in 1978 with 2.
  • 15 fixed thresholds have at least one qualifying day at Harper 3ENE.
15 years with a qualifying day
Days at or above 30 C (86 F) per year at Harper 3ENE Days per year at Harper 3ENE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 166 in 2011. 0501001502002011: 1662012: 1322013: 1272014: 1362015: 1292016: 1092017: 1022018: 1112019: 1282020: 1202021: 1062022: 1472024: 1482025: 1472026: 12920112013201520172019202120242026
Days per year at Harper 3ENE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 166 in 2011.
Days at or above 30 C (86 F) per year at Harper 3ENE
YearDaysDecade average
2011166126.7
2012132126.7
2013127126.7
2014136126.7
2015129126.7
2016109126.7
2017102126.7
2018111126.7
2019128126.7
2020120132.8
2021106132.8
2022147132.8
2024148132.8
2025147132.8
2026129132.8
First to last qualifying date each year at Harper 3ENE For each year, a bar from the first to the last day at Harper 3ENE meeting 30 C (86 F). 2011: 27 March 2011 to 25 October 20112012: 31 March 2012 to 22 October 20122013: 5 March 2013 to 13 October 20132014: 2 March 2014 to 18 October 20142015: 24 March 2015 to 16 October 20152016: 15 March 2016 to 19 October 20162017: 24 February 2017 to 3 November 20172018: 11 March 2018 to 26 September 20182019: 10 April 2019 to 16 December 20192020: 26 March 2020 to 20 October 20202021: 9 April 2021 to 26 December 20212022: 26 March 2022 to 17 October 20222024: 26 February 2024 to 28 October 20242025: 13 March 2025 to 17 November 20252026: 26 February 2026 to 1 October 202620112013201520172019202120242026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Harper 3ENE meeting 30 C (86 F).
First to last qualifying date each year at Harper 3ENE
YearFirst dateLast date
20112011-03-272011-10-25
20122012-03-312012-10-22
20132013-03-052013-10-13
20142014-03-022014-10-18
20152015-03-242015-10-16
20162016-03-152016-10-19
20172017-02-242017-11-03
20182018-03-112018-09-26
20192019-04-102019-12-16
20202020-03-262020-10-20
20212021-04-092021-12-26
20222022-03-262022-10-17
20242024-02-262024-10-28
20252025-03-132025-11-17
20262026-02-262026-10-01

Every Fixed Threshold

Fixed thresholds at Harper 3ENE
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days151662011129
35 C (95 F): Days15101201122
40 C (104 F): Days3120111
90 F (32.2 C): Days15145201189
100 F (37.8 C): Days112020111
0 C (32 F): Ice days (max14820213
0 C (32 F): Frost days (min1566201315
-10 C (14 F): Days with min11820113
20 C (68 F): Tropical nights (min151162024121
25 C (77 F): Days with min3120111
10 mm (0.39 in): Days with 10 mm or more rain7931196825
25 mm (0.98 in): Days with 25 mm or more rain7914195713
50 mm (1.97 in): Days with 50 mm or more rain69519904
100 mm (3.94 in): Days with 100 mm or more rain22219781
200 mm (7.87 in): Days with 200 mm or more rain1119591

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2011.

Download the Data

  • Data for Harper 3ENE 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 (2026-10-12).