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

St Mawgan Threshold Days by Year (UKE00105872)

7 fixed thresholds counted per year at St Mawgan (UKE00105872): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St Mawgan Thresholds

  • St Mawgan: nights with a minimum temperature at or below 0 C (32 F) in 49 years, most in 1963 with 57.
  • St Mawgan: days with 10 mm (0.39 in) or more of precipitation in 49 years, most in 1993 with 53.
  • St Mawgan: days with 25 mm (0.98 in) or more of precipitation in 45 years, most in 1969 with 6.
  • St Mawgan: days with a maximum temperature at or below 0 C (32 F) in 11 years, most in 1963 with 4.
  • 7 fixed thresholds have at least one qualifying day at St Mawgan.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at St Mawgan Days per year at St Mawgan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 2 in 1976. 011221975: 11976: 21983: 11995: 11975197619831995
Days per year at St Mawgan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 2 in 1976.
Days at or above 30 C (86 F) per year at St Mawgan
YearDaysDecade average
197511.5
197621.5
198311
199511
First to last qualifying date each year at St Mawgan For each year, a bar from the first to the last day at St Mawgan meeting 30 C (86 F). 1975: 2 August 1975 to 2 August 19751976: 27 June 1976 to 30 June 19761983: 11 July 1983 to 11 July 19831995: 2 August 1995 to 2 August 19951975197619831995JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at St Mawgan meeting 30 C (86 F).
First to last qualifying date each year at St Mawgan
YearFirst dateLast date
19751975-08-021975-08-02
19761976-06-271976-06-30
19831983-07-111983-07-11
19951995-08-021995-08-02

Every Fixed Threshold

Fixed thresholds at St Mawgan
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4219761
0 C (32 F): Ice days (max11419631
0 C (32 F): Frost days (min495719631
20 C (68 F): Tropical nights (min4219951
10 mm (0.39 in): Days with 10 mm or more rain4953199325
25 mm (0.98 in): Days with 25 mm or more rain45619691
50 mm (1.97 in): Days with 50 mm or more rain5119691

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1975.

Download the Data

  • Data for St Mawgan 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).