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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Hermel Threshold Days by Year (LEE00147738)

2 fixed thresholds counted per year at Hermel (LEE00147738): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hermel Thresholds

  • Hermel: days with 10 mm (0.39 in) or more of precipitation in 9 years, most in 1939 with 11.
  • Hermel: days with 25 mm (0.98 in) or more of precipitation in 5 years, most in 1967 with 2.
  • 2 fixed thresholds have at least one qualifying day at Hermel.
9 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Hermel Days per year at Hermel with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 11 in 1939. 0510151934: 41936: 31938: 71939: 111965: 81967: 91968: 71969: 31970: 2193419361938193919651967196819691970
Days per year at Hermel with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 11 in 1939.
Days with 10 mm (0.39 in) or more of precipitation per year at Hermel
YearDaysDecade average
193446.3
193636.3
193876.3
1939116.3
196586.8
196796.8
196876.8
196936.8
197022
First to last qualifying date each year at Hermel For each year, a bar from the first to the last day at Hermel meeting 10 mm (0.39 in). 1934: 13 January 1934 to 23 February 19341936: 3 December 1936 to 29 December 19361938: 16 January 1938 to 30 December 19381939: 18 February 1939 to 23 December 19391965: 8 January 1965 to 27 December 19651967: 28 January 1967 to 22 December 19671968: 9 January 1968 to 14 December 19681969: 27 January 1969 to 12 October 19691970: 23 January 1970 to 25 January 197019341938196519681970JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Hermel meeting 10 mm (0.39 in).
First to last qualifying date each year at Hermel
YearFirst dateLast date
19341934-01-131934-02-23
19361936-12-031936-12-29
19381938-01-161938-12-30
19391939-02-181939-12-23
19651965-01-081965-12-27
19671967-01-281967-12-22
19681968-01-091968-12-14
19691969-01-271969-10-12
19701970-01-231970-01-25

Every Fixed Threshold

Fixed thresholds at Hermel
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain91119392
25 mm (0.98 in): Days with 25 mm or more rain5219671

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1934.

Download the Data

  • Data for Hermel 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 (2025-12-31).