Daily records
Page built 2026-10-18
Data as of 2025-12-31
Search
Built 2026-10-18 (18 October 2026)

St Alphonse Threshold Days by Year

5 fixed thresholds counted per year at St Alphonse (CA005012545): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St Alphonse Thresholds

  • St Alphonse: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 1971 with 22.
  • St Alphonse: days with 25 mm (0.98 in) or more of precipitation in 19 years, most in 1977 with 7.
  • St Alphonse: days with 10 cm (3.9 in) or more of snowfall in 19 years, most in 1979 with 9.
  • St Alphonse: days with 50 mm (1.97 in) or more of precipitation in 6 years, most in 1968 with 2.
  • 5 fixed thresholds have at least one qualifying day at St Alphonse.
21 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at St Alphonse Days per year at St Alphonse with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 22 in 1971. 01020301963: 101964: 141965: 171966: 81967: 131968: 181969: 191970: 171971: 221972: 121973: 201974: 121975: 181976: 141977: 221978: 181979: 141980: 141981: 181982: 141983: 111963196619691972197519781981
Days per year at St Alphonse with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 22 in 1971.
Days with 10 mm (0.39 in) or more of precipitation per year at St Alphonse
YearDaysDecade average
19631014.1
19641414.1
19651714.1
1966814.1
19671314.1
19681814.1
19691914.1
19701716.9
19712216.9
19721216.9
19732016.9
19741216.9
19751816.9
19761416.9
19772216.9
19781816.9
19791416.9
19801414.3
19811814.3
19821414.3
19831114.3
First to last qualifying date each year at St Alphonse For each year, a bar from the first to the last day at St Alphonse meeting 10 mm (0.39 in). 1963: 2 April 1963 to 25 July 19631964: 18 March 1964 to 23 December 19641965: 10 April 1965 to 30 December 19651966: 28 February 1966 to 7 August 19661967: 28 January 1967 to 17 December 19671968: 28 January 1968 to 2 September 19681969: 15 January 1969 to 31 December 19691970: 2 March 1970 to 25 October 19701971: 12 January 1971 to 30 October 19711972: 16 February 1972 to 20 August 19721973: 4 May 1973 to 16 December 19731974: 25 January 1974 to 22 December 19741975: 4 March 1975 to 12 December 19751976: 23 January 1976 to 31 August 19761977: 18 January 1977 to 17 December 19771978: 5 April 1978 to 28 December 19781979: 22 February 1979 to 27 November 19791980: 5 January 1980 to 22 October 19801981: 25 January 1981 to 3 October 19811982: 2 April 1982 to 1 December 19821983: 5 March 1983 to 30 September 19831963196619691972197519781981JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at St Alphonse meeting 10 mm (0.39 in).
First to last qualifying date each year at St Alphonse
YearFirst dateLast date
19631963-04-021963-07-25
19641964-03-181964-12-23
19651965-04-101965-12-30
19661966-02-281966-08-07
19671967-01-281967-12-17
19681968-01-281968-09-02
19691969-01-151969-12-31
19701970-03-021970-10-25
19711971-01-121971-10-30
19721972-02-161972-08-20
19731973-05-041973-12-16
19741974-01-251974-12-22
19751975-03-041975-12-12
19761976-01-231976-08-31
19771977-01-181977-12-17
19781978-04-051978-12-28
19791979-02-221979-11-27
19801980-01-051980-10-22
19811981-01-251981-10-03
19821982-04-021982-12-01
19831983-03-051983-09-30

Every Fixed Threshold

Fixed thresholds at St Alphonse
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2122197111
25 mm (0.98 in): Days with 25 mm or more rain19719771
50 mm (1.97 in): Days with 50 mm or more rain6219681
10 cm (3.9 in): Days with 10 cm or more snowfall19919791
25 cm (9.8 in): Days with 25 cm or more snowfall3219751

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 Alphonse 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).