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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Louisavale Threshold Days by Year

5 fixed thresholds counted per year at Louisavale (ASN00040305): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Louisavale Thresholds

  • Louisavale: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 1938 with 40.
  • Louisavale: days with 25 mm (0.98 in) or more of precipitation in 21 years, most in 1964 with 11.
  • Louisavale: days with 50 mm (1.97 in) or more of precipitation in 18 years, most in 1978 with 5.
  • Louisavale: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 1974 with 3.
  • 5 fixed thresholds have at least one qualifying day at Louisavale.
21 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Louisavale Days per year at Louisavale with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 40 in 1938. 0102030401937: 271938: 401939: 221940: 201962: 251963: 191964: 251965: 221966: 231967: 221968: 221969: 271970: 261971: 211972: 221973: 191974: 201975: 131976: 151977: 141978: 311937194019641967197019731976
Days per year at Louisavale with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 40 in 1938.
Days with 10 mm (0.39 in) or more of precipitation per year at Louisavale
YearDaysDecade average
19372729.7
19384029.7
19392229.7
19402020
19622523.1
19631923.1
19642523.1
19652223.1
19662323.1
19672223.1
19682223.1
19692723.1
19702620.1
19712120.1
19722220.1
19731920.1
19742020.1
19751320.1
19761520.1
19771420.1
19783120.1
First to last qualifying date each year at Louisavale For each year, a bar from the first to the last day at Louisavale meeting 10 mm (0.39 in). 1937: 12 February 1937 to 16 December 19371938: 4 January 1938 to 30 November 19381939: 22 January 1939 to 27 December 19391940: 18 January 1940 to 15 November 19401962: 8 January 1962 to 31 December 19621963: 1 January 1963 to 15 December 19631964: 1 January 1964 to 26 December 19641965: 12 January 1965 to 19 December 19651966: 1 February 1966 to 31 December 19661967: 2 January 1967 to 24 December 19671968: 8 January 1968 to 25 December 19681969: 2 January 1969 to 24 December 19691970: 2 January 1970 to 23 December 19701971: 20 January 1971 to 15 December 19711972: 20 January 1972 to 29 December 19721973: 10 January 1973 to 21 December 19731974: 8 January 1974 to 12 December 19741975: 13 January 1975 to 23 December 19751976: 15 January 1976 to 10 November 19761977: 18 January 1977 to 8 December 19771978: 5 January 1978 to 31 December 19781937194019641967197019731976JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Louisavale meeting 10 mm (0.39 in).
First to last qualifying date each year at Louisavale
YearFirst dateLast date
19371937-02-121937-12-16
19381938-01-041938-11-30
19391939-01-221939-12-27
19401940-01-181940-11-15
19621962-01-081962-12-31
19631963-01-011963-12-15
19641964-01-011964-12-26
19651965-01-121965-12-19
19661966-02-011966-12-31
19671967-01-021967-12-24
19681968-01-081968-12-25
19691969-01-021969-12-24
19701970-01-021970-12-23
19711971-01-201971-12-15
19721972-01-201972-12-29
19731973-01-101973-12-21
19741974-01-081974-12-12
19751975-01-131975-12-23
19761976-01-151976-11-10
19771977-01-181977-12-08
19781978-01-051978-12-31

Every Fixed Threshold

Fixed thresholds at Louisavale
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2140193831
25 mm (0.98 in): Days with 25 mm or more rain2111196410
50 mm (1.97 in): Days with 50 mm or more rain18519785
100 mm (3.94 in): Days with 100 mm or more rain4319743
200 mm (7.87 in): Days with 200 mm or more rain1119741

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1937.

Download the Data

  • Data for Louisavale 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).