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

Louisville McAlpine Threshold Days by Year (USC00154955)

16 fixed thresholds counted per year at Louisville McAlpine (USC00154955): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Louisville McAlpine Thresholds

  • Louisville McAlpine: days with 10 mm (0.39 in) or more of precipitation in 74 years, most in 2018 with 55.
  • Louisville McAlpine: days with 25 mm (0.98 in) or more of precipitation in 74 years, most in 2018 with 21.
  • Louisville McAlpine: days with 50 mm (1.97 in) or more of precipitation in 58 years, most in 2018 with 8.
  • Louisville McAlpine: days with 10 cm (3.9 in) or more of snowfall in 19 years, most in 1960 with 3.
  • 16 fixed thresholds have at least one qualifying day at Louisville McAlpine.
16 years with a qualifying day
Days at or above 30 C (86 F) per year at Louisville McAlpine Days per year at Louisville McAlpine with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 100 in 2019. 02550751002011: 902012: 892013: 712014: 732015: 732016: 972017: 782018: 992019: 1002020: 682021: 732022: 812023: 622024: 852025: 712026: 6720112013201520172019202120232025
Days per year at Louisville McAlpine with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 100 in 2019.
Days at or above 30 C (86 F) per year at Louisville McAlpine
YearDaysDecade average
20119085.6
20128985.6
20137185.6
20147385.6
20157385.6
20169785.6
20177885.6
20189985.6
201910085.6
20206872.4
20217372.4
20228172.4
20236272.4
20248572.4
20257172.4
20266772.4
First to last qualifying date each year at Louisville McAlpine For each year, a bar from the first to the last day at Louisville McAlpine meeting 30 C (86 F). 2011: 10 April 2011 to 14 September 20112012: 19 March 2012 to 22 September 20122013: 3 May 2013 to 5 October 20132014: 6 May 2014 to 3 October 20142015: 8 May 2015 to 19 September 20152016: 26 April 2016 to 20 October 20162017: 30 April 2017 to 28 September 20172018: 3 May 2018 to 10 October 20182019: 9 May 2019 to 5 October 20192020: 24 May 2020 to 11 September 20202021: 22 May 2021 to 11 October 20212022: 24 April 2022 to 22 September 20222023: 21 April 2023 to 5 October 20232024: 16 April 2024 to 7 October 20242025: 16 May 2025 to 1 October 20252026: 23 March 2026 to 2 October 202620112013201520172019202120232025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Louisville McAlpine meeting 30 C (86 F).
First to last qualifying date each year at Louisville McAlpine
YearFirst dateLast date
20112011-04-102011-09-14
20122012-03-192012-09-22
20132013-05-032013-10-05
20142014-05-062014-10-03
20152015-05-082015-09-19
20162016-04-262016-10-20
20172017-04-302017-09-28
20182018-05-032018-10-10
20192019-05-092019-10-05
20202020-05-242020-09-11
20212021-05-222021-10-11
20222022-04-242022-09-22
20232023-04-212023-10-05
20242024-04-162024-10-07
20252025-05-162025-10-01
20262026-03-232026-10-02

Every Fixed Threshold

Fixed thresholds at Louisville McAlpine
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days16100201967
35 C (95 F): Days1528201211
40 C (104 F): Days1720127
90 F (32.2 C): Days1660201936
100 F (37.8 C): Days31220121
0 C (32 F): Ice days (max1622201418
0 C (32 F): Frost days (min16102201349
-10 C (14 F): Days with min1322201414
-20 C (-4 F): Days with min3120151
20 C (68 F): Tropical nights (min16106201884
25 C (77 F): Days with min1512201113
10 mm (0.39 in): Days with 10 mm or more rain7455201833
25 mm (0.98 in): Days with 25 mm or more rain742120187
50 mm (1.97 in): Days with 50 mm or more rain58820183
100 mm (3.94 in): Days with 100 mm or more rain12219641
10 cm (3.9 in): Days with 10 cm or more snowfall19319601

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 Louisville McAlpine 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).