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

Saint John A Threshold Days by Year (CA008104900)

14 fixed thresholds counted per year at Saint John A (CA008104900): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Saint John A Thresholds

  • Saint John A: days with a maximum temperature at or below 0 C (32 F) in 35 years, most in 1955 with 87.
  • Saint John A: nights with a minimum temperature at or below 0 C (32 F) in 35 years, most in 1948 with 205.
  • Saint John A: nights with a minimum temperature at or below -10 C (14 F) in 35 years, most in 1967 with 83.
  • Saint John A: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 1979 with 68.
  • 14 fixed thresholds have at least one qualifying day at Saint John A.
18 years with a qualifying day
Days at or above 30 C (86 F) per year at Saint John A Days per year at Saint John A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 1963. 02461948: 11949: 31952: 11953: 31957: 11959: 21960: 11963: 51968: 11969: 11970: 31973: 31974: 11975: 21976: 21977: 11979: 11983: 2194819521957196019681970197419761979
Days per year at Saint John A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 1963.
Days at or above 30 C (86 F) per year at Saint John A
YearDaysDecade average
194812
194932
195211.8
195331.8
195711.8
195921.8
196012
196352
196812
196912
197031.9
197331.9
197411.9
197521.9
197621.9
197711.9
197911.9
198322
First to last qualifying date each year at Saint John A For each year, a bar from the first to the last day at Saint John A meeting 30 C (86 F). 1948: 26 August 1948 to 26 August 19481949: 28 July 1949 to 27 August 19491952: 15 July 1952 to 15 July 19521953: 20 June 1953 to 29 August 19531957: 20 July 1957 to 20 July 19571959: 28 May 1959 to 28 July 19591960: 19 August 1960 to 19 August 19601963: 25 June 1963 to 28 July 19631968: 16 July 1968 to 16 July 19681969: 18 July 1969 to 18 July 19691970: 23 July 1970 to 25 July 19701973: 9 July 1973 to 31 August 19731974: 9 June 1974 to 9 June 19741975: 23 June 1975 to 2 August 19751976: 21 August 1976 to 22 August 19761977: 21 July 1977 to 21 July 19771979: 16 June 1979 to 16 June 19791983: 22 June 1983 to 23 June 1983194819531960196919741977JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Saint John A meeting 30 C (86 F).
First to last qualifying date each year at Saint John A
YearFirst dateLast date
19481948-08-261948-08-26
19491949-07-281949-08-27
19521952-07-151952-07-15
19531953-06-201953-08-29
19571957-07-201957-07-20
19591959-05-281959-07-28
19601960-08-191960-08-19
19631963-06-251963-07-28
19681968-07-161968-07-16
19691969-07-181969-07-18
19701970-07-231970-07-25
19731973-07-091973-08-31
19741974-06-091974-06-09
19751975-06-231975-08-02
19761976-08-211976-08-22
19771977-07-211977-07-21
19791979-06-161979-06-16
19831983-06-221983-06-23

Every Fixed Threshold

Fixed thresholds at Saint John A
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days18519632
90 F (32.2 C): Days5119631
0 C (32 F): Ice days (max3587195549
0 C (32 F): Frost days (min352051948149
-10 C (14 F): Days with min3583196758
-20 C (-4 F): Days with min343819487
-30 C (-22 F): Days with min10519481
10 mm (0.39 in): Days with 10 mm or more rain3568197944
25 mm (0.98 in): Days with 25 mm or more rain3523195918
50 mm (1.97 in): Days with 50 mm or more rain33519631
100 mm (3.94 in): Days with 100 mm or more rain5119621
10 cm (3.9 in): Days with 10 cm or more snowfall351519675
25 cm (9.8 in): Days with 25 cm or more snowfall22319641
50 cm (19.7 in): Days with 50 cm or more snowfall1119601

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

Download the Data

  • Data for Saint John 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).