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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

St John's A Threshold Days by Year (CA008403506)

13 fixed thresholds counted per year at St John's A (CA008403506): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St John's A Thresholds

  • St John's A: days with a maximum temperature at or below 0 C (32 F) in 42 years, most in 1959 with 90.
  • St John's A: nights with a minimum temperature at or below 0 C (32 F) in 42 years, most in 1974 with 200.
  • St John's A: nights with a minimum temperature at or below -10 C (14 F) in 42 years, most in 1972 with 68.
  • St John's A: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1955 with 70.
  • 13 fixed thresholds have at least one qualifying day at St John's A.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at St John's A Days per year at St John's A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 2 in 1944. 011221944: 21963: 11982: 11983: 11944196319821983
Days per year at St John's A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 2 in 1944.
Days at or above 30 C (86 F) per year at St John's A
YearDaysDecade average
194422
196311
198211
198311
First to last qualifying date each year at St John's A For each year, a bar from the first to the last day at St John's A meeting 30 C (86 F). 1944: 13 August 1944 to 14 August 19441963: 14 July 1963 to 14 July 19631982: 9 July 1982 to 9 July 19821983: 6 July 1983 to 6 July 19831944196319821983JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at St John's A meeting 30 C (86 F).
First to last qualifying date each year at St John's A
YearFirst dateLast date
19441944-08-131944-08-14
19631963-07-141963-07-14
19821982-07-091982-07-09
19831983-07-061983-07-06

Every Fixed Threshold

Fixed thresholds at St John's A
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4219441
0 C (32 F): Ice days (max4290195960
0 C (32 F): Frost days (min422001974153
-10 C (14 F): Days with min4268197226
-20 C (-4 F): Days with min13619751
20 C (68 F): Tropical nights (min1119701
10 mm (0.39 in): Days with 10 mm or more rain4270195558
25 mm (0.98 in): Days with 25 mm or more rain4223197012
50 mm (1.97 in): Days with 50 mm or more rain34419421
100 mm (3.94 in): Days with 100 mm or more rain2119421
10 cm (3.9 in): Days with 10 cm or more snowfall422219555
25 cm (9.8 in): Days with 25 cm or more snowfall33419431
50 cm (19.7 in): Days with 50 cm or more snowfall2119431

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1944.

Download the Data

  • Data for St John's A 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).