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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

St Flavien Threshold Days by Year (CA007027259)

14 fixed thresholds counted per year at St Flavien (CA007027259): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St Flavien Thresholds

  • St Flavien: nights with a minimum temperature at or below 0 C (32 F) in 19 years, most in 1965 with 201.
  • St Flavien: nights with a minimum temperature at or below -10 C (14 F) in 19 years, most in 1967 with 103.
  • St Flavien: nights with a minimum temperature at or below -20 C (-4 F) in 19 years, most in 1976 with 49.
  • St Flavien: days with a maximum temperature at or below 0 C (32 F) in 18 years, most in 1971 with 117.
  • 14 fixed thresholds have at least one qualifying day at St Flavien.
15 years with a qualifying day
Days at or above 30 C (86 F) per year at St Flavien Days per year at St Flavien with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 11 in 1963. 0510151963: 111964: 31966: 21967: 21968: 31969: 21970: 51971: 21972: 11973: 21975: 61976: 11981: 11982: 31983: 919631966196819701972197519811983
Days per year at St Flavien with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 11 in 1963.
Days at or above 30 C (86 F) per year at St Flavien
YearDaysDecade average
1963113.8
196433.8
196623.8
196723.8
196833.8
196923.8
197052.8
197122.8
197212.8
197322.8
197562.8
197612.8
198114.3
198234.3
198394.3
First to last qualifying date each year at St Flavien For each year, a bar from the first to the last day at St Flavien meeting 30 C (86 F). 1963: 24 June 1963 to 29 July 19631964: 30 June 1964 to 28 July 19641966: 3 July 1966 to 9 August 19661967: 3 June 1967 to 4 June 19671968: 15 July 1968 to 18 July 19681969: 27 June 1969 to 16 July 19691970: 27 July 1970 to 16 August 19701971: 19 May 1971 to 30 June 19711972: 15 July 1972 to 15 July 19721973: 24 July 1973 to 18 August 19731975: 23 June 1975 to 2 August 19751976: 6 July 1976 to 6 July 19761981: 8 July 1981 to 8 July 19811982: 7 July 1982 to 18 July 19821983: 13 June 1983 to 5 August 198319631966196819701972197519811983JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at St Flavien meeting 30 C (86 F).
First to last qualifying date each year at St Flavien
YearFirst dateLast date
19631963-06-241963-07-29
19641964-06-301964-07-28
19661966-07-031966-08-09
19671967-06-031967-06-04
19681968-07-151968-07-18
19691969-06-271969-07-16
19701970-07-271970-08-16
19711971-05-191971-06-30
19721972-07-151972-07-15
19731973-07-241973-08-18
19751975-06-231975-08-02
19761976-07-061976-07-06
19811981-07-081981-07-08
19821982-07-071982-07-18
19831983-06-131983-08-05

Every Fixed Threshold

Fixed thresholds at St Flavien
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days151119639
90 F (32.2 C): Days4219752
0 C (32 F): Ice days (max18117197193
0 C (32 F): Frost days (min192011965188
-10 C (14 F): Days with min19103196778
-20 C (-4 F): Days with min1949197627
-30 C (-22 F): Days with min181019824
20 C (68 F): Tropical nights (min15819753
10 mm (0.39 in): Days with 10 mm or more rain1343198343
25 mm (0.98 in): Days with 25 mm or more rain131019717
50 mm (1.97 in): Days with 50 mm or more rain4219631
10 cm (3.9 in): Days with 10 cm or more snowfall1717197114
25 cm (9.8 in): Days with 25 cm or more snowfall12419714
50 cm (19.7 in): Days with 50 cm or more snowfall2119631

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1963.

Download the Data

  • Data for St Flavien 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 (2026-10-17).