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Built 2026-10-19 (19 October 2026)

St Ambroise Threshold Days by Year (CA005042546)

13 fixed thresholds counted per year at St Ambroise (CA005042546): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St Ambroise Thresholds

  • St Ambroise: days with 10 mm (0.39 in) or more of precipitation in 11 years, most in 1975 with 22.
  • St Ambroise: days with 10 cm (3.9 in) or more of snowfall in 9 years, most in 1975 with 6.
  • St Ambroise: days with a maximum temperature at or above 30 C (86 F) in 8 years, most in 1976 with 17.
  • St Ambroise: days with a maximum temperature at or above 90 F (32.2 C) in 8 years, most in 1975 with 6.
  • 13 fixed thresholds have at least one qualifying day at St Ambroise.
8 years with a qualifying day
Days at or above 30 C (86 F) per year at St Ambroise Days per year at St Ambroise with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 17 in 1976. 051015201971: 91972: 121973: 81974: 111975: 111976: 171977: 111978: 1119711972197319741975197619771978
Days per year at St Ambroise with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 17 in 1976.
Days at or above 30 C (86 F) per year at St Ambroise
YearDaysDecade average
1971911.3
19721211.3
1973811.3
19741111.3
19751111.3
19761711.3
19771111.3
19781111.3
First to last qualifying date each year at St Ambroise For each year, a bar from the first to the last day at St Ambroise meeting 30 C (86 F). 1971: 3 June 1971 to 28 August 19711972: 16 May 1972 to 30 August 19721973: 2 June 1973 to 31 August 19731974: 25 June 1974 to 7 August 19741975: 20 June 1975 to 30 July 19751976: 2 June 1976 to 6 September 19761977: 30 April 1977 to 22 July 19771978: 23 May 1978 to 10 September 197819711972197319741975197619771978JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at St Ambroise meeting 30 C (86 F).
First to last qualifying date each year at St Ambroise
YearFirst dateLast date
19711971-06-031971-08-28
19721972-05-161972-08-30
19731973-06-021973-08-31
19741974-06-251974-08-07
19751975-06-201975-07-30
19761976-06-021976-09-06
19771977-04-301977-07-22
19781978-05-231978-09-10

Every Fixed Threshold

Fixed thresholds at St Ambroise
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days817197611
35 C (95 F): Days4319783
90 F (32.2 C): Days8619754
0 C (32 F): Ice days (max81421972134
0 C (32 F): Frost days (min82051972183
-10 C (14 F): Days with min81261978126
-20 C (-4 F): Days with min882197281
-30 C (-22 F): Days with min829197225
-40 C (-40 F): Days with min1219742
20 C (68 F): Tropical nights (min4319751
10 mm (0.39 in): Days with 10 mm or more rain112219757
25 mm (0.98 in): Days with 25 mm or more rain8419713
10 cm (3.9 in): Days with 10 cm or more snowfall9619752

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1971.

Download the Data

  • Data for St Ambroise 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).