Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Grosse Isle Threshold Days by Year (CA005021225)

5 fixed thresholds counted per year at Grosse Isle (CA005021225): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grosse Isle Thresholds

  • Grosse Isle: days with 10 mm (0.39 in) or more of precipitation in 18 years, most in 1971 with 23.
  • Grosse Isle: days with 25 mm (0.98 in) or more of precipitation in 17 years, most in 1977 with 5.
  • Grosse Isle: days with 10 cm (3.9 in) or more of snowfall in 16 years, most in 1970 with 6.
  • Grosse Isle: days with 50 mm (1.97 in) or more of precipitation in 5 years, most in 1968 with 2.
  • 5 fixed thresholds have at least one qualifying day at Grosse Isle.
18 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Grosse Isle Days per year at Grosse Isle with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 23 in 1971. 01020301965: 131967: 191968: 141969: 161970: 161971: 231972: 71973: 191974: 151975: 111976: 101977: 161978: 201979: 91980: 111981: 171982: 161983: 11196519681970197219741976197819801982
Days per year at Grosse Isle with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 23 in 1971.
Days with 10 mm (0.39 in) or more of precipitation per year at Grosse Isle
YearDaysDecade average
19651315.5
19671915.5
19681415.5
19691615.5
19701614.6
19712314.6
1972714.6
19731914.6
19741514.6
19751114.6
19761014.6
19771614.6
19782014.6
1979914.6
19801113.8
19811713.8
19821613.8
19831113.8
First to last qualifying date each year at Grosse Isle For each year, a bar from the first to the last day at Grosse Isle meeting 10 mm (0.39 in). 1965: 10 March 1965 to 24 November 19651967: 20 March 1967 to 12 October 19671968: 8 January 1968 to 15 October 19681969: 22 January 1969 to 30 September 19691970: 14 January 1970 to 1 December 19701971: 31 March 1971 to 5 November 19711972: 18 July 1972 to 29 December 19721973: 20 April 1973 to 8 December 19731974: 25 January 1974 to 29 September 19741975: 10 January 1975 to 12 December 19751976: 5 January 1976 to 26 August 19761977: 25 February 1977 to 18 December 19771978: 5 April 1978 to 28 December 19781979: 29 March 1979 to 27 June 19791980: 10 January 1980 to 16 October 19801981: 25 January 1981 to 12 October 19811982: 30 March 1982 to 1 December 19821983: 13 June 1983 to 3 October 1983196519691972197519781981JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Grosse Isle meeting 10 mm (0.39 in).
First to last qualifying date each year at Grosse Isle
YearFirst dateLast date
19651965-03-101965-11-24
19671967-03-201967-10-12
19681968-01-081968-10-15
19691969-01-221969-09-30
19701970-01-141970-12-01
19711971-03-311971-11-05
19721972-07-181972-12-29
19731973-04-201973-12-08
19741974-01-251974-09-29
19751975-01-101975-12-12
19761976-01-051976-08-26
19771977-02-251977-12-18
19781978-04-051978-12-28
19791979-03-291979-06-27
19801980-01-101980-10-16
19811981-01-251981-10-12
19821982-03-301982-12-01
19831983-06-131983-10-03

Every Fixed Threshold

Fixed thresholds at Grosse Isle
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain1823197111
25 mm (0.98 in): Days with 25 mm or more rain17519772
50 mm (1.97 in): Days with 50 mm or more rain5219681
10 cm (3.9 in): Days with 10 cm or more snowfall16619701
25 cm (9.8 in): Days with 25 cm or more snowfall1119711

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1965.

Download the Data

  • Data for Grosse Isle 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).