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Built 2026-10-17 (17 October 2026)

Frogmore Threshold Days by Year

12 fixed thresholds counted per year at Frogmore (ASN00070034): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Frogmore Thresholds

  • Frogmore: days with 10 mm (0.39 in) or more of precipitation in 67 years, most in 1973 with 37.
  • Frogmore: days with 25 mm (0.98 in) or more of precipitation in 65 years, most in 1931 with 11.
  • Frogmore: days with 50 mm (1.97 in) or more of precipitation in 23 years, most in 1974 with 3.
  • Frogmore: days with a maximum temperature at or above 30 C (86 F) in 14 years, most in 1979 with 74.
  • 12 fixed thresholds have at least one qualifying day at Frogmore.
14 years with a qualifying day
Days at or above 30 C (86 F) per year at Frogmore Days per year at Frogmore with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 74 in 1979. 0204060801970: 431971: 281972: 271973: 421974: 381975: 531976: 371977: 651978: 351979: 741980: 711981: 401982: 681983: 521970197219741976197819801982
Days per year at Frogmore with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 74 in 1979.
Days at or above 30 C (86 F) per year at Frogmore
YearDaysDecade average
19704344.2
19712844.2
19722744.2
19734244.2
19743844.2
19755344.2
19763744.2
19776544.2
19783544.2
19797444.2
19807157.8
19814057.8
19826857.8
19835257.8
First to last qualifying date each year at Frogmore For each year, a bar from the first to the last day at Frogmore meeting 30 C (86 F). 1970: 10 January 1970 to 28 December 19701971: 6 January 1971 to 30 December 19711972: 9 January 1972 to 31 December 19721973: 1 January 1973 to 29 December 19731974: 2 January 1974 to 31 December 19741975: 1 January 1975 to 31 December 19751976: 1 January 1976 to 31 December 19761977: 7 January 1977 to 31 December 19771978: 1 January 1978 to 31 December 19781979: 1 January 1979 to 27 December 19791980: 5 January 1980 to 31 December 19801981: 1 January 1981 to 31 December 19811982: 1 January 1982 to 31 December 19821983: 1 January 1983 to 25 December 19831970197219741976197819801982JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Frogmore meeting 30 C (86 F).
First to last qualifying date each year at Frogmore
YearFirst dateLast date
19701970-01-101970-12-28
19711971-01-061971-12-30
19721972-01-091972-12-31
19731973-01-011973-12-29
19741974-01-021974-12-31
19751975-01-011975-12-31
19761976-01-011976-12-31
19771977-01-071977-12-31
19781978-01-011978-12-31
19791979-01-011979-12-27
19801980-01-051980-12-31
19811981-01-011981-12-31
19821982-01-011982-12-31
19831983-01-011983-12-25

Every Fixed Threshold

Fixed thresholds at Frogmore
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1474197952
35 C (95 F): Days1422198218
40 C (104 F): Days2319823
90 F (32.2 C): Days1451198242
100 F (37.8 C): Days10719797
0 C (32 F): Frost days (min1348197119
20 C (68 F): Tropical nights (min1320198320
25 C (77 F): Days with min3419834
10 mm (0.39 in): Days with 10 mm or more rain6737197320
25 mm (0.98 in): Days with 25 mm or more rain651119314
50 mm (1.97 in): Days with 50 mm or more rain23319742
100 mm (3.94 in): Days with 100 mm or more rain10n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1970.

Download the Data

  • Data for Frogmore 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 (2026-10-16).