Saint John Threshold Days by Year (CA008104800)

15 fixed thresholds counted per year at Saint John (CA008104800): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Saint John Thresholds

Saint John: days with a maximum temperature at or below 0 C (32 F) in 94 years, most in 1882 with 88.
Saint John: nights with a minimum temperature at or below 0 C (32 F) in 94 years, most in 1875 with 179.
Saint John: nights with a minimum temperature at or below -10 C (14 F) in 94 years, most in 1875 with 84.
Saint John: days with 10 mm (0.39 in) or more of precipitation in 94 years, most in 1954 with 61.
15 fixed thresholds have at least one qualifying day at Saint John.

Days at or above 30 C (86 F)

22 years with a qualifying day

Days per year at Saint John with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 3 in 1900.

Days at or above 30 C (86 F) per year at Saint John
Year	Days	Decade average
1886	1	1
1887	1	1
1889	1	1
1892	1	1
1893	1	1
1895	1	1
1900	3	3
1917	1	1
1921	1	1
1925	1	1
1930	1	1.7
1935	2	1.7
1937	2	1.7
1940	1	1.3
1941	1	1.3
1943	1	1.3
1945	2	1.3
1948	1	1.3
1949	2	1.3
1953	2	2
1968	1	1.5
1969	2	1.5

For each year, a bar from the first to the last day at Saint John meeting 30 C (86 F).

First to last qualifying date each year at Saint John
Year	First date	Last date
1886	1886-07-02	1886-07-02
1887	1887-07-03	1887-07-03
1889	1889-06-30	1889-06-30
1892	1892-06-14	1892-06-14
1893	1893-07-21	1893-07-21
1895	1895-06-02	1895-06-02
1900	1900-05-30	1900-08-27
1917	1917-07-31	1917-07-31
1921	1921-09-03	1921-09-03
1925	1925-06-04	1925-06-04
1930	1930-06-04	1930-06-04
1935	1935-08-16	1935-08-17
1937	1937-07-08	1937-08-28
1940	1940-07-27	1940-07-27
1941	1941-06-22	1941-06-22
1943	1943-06-25	1943-06-25
1945	1945-08-22	1945-09-08
1948	1948-08-26	1948-08-26
1949	1949-08-06	1949-08-27
1953	1953-07-17	1953-08-29
1968	1968-07-16	1968-07-16
1969	1969-07-17	1969-07-18

Every Fixed Threshold

Fixed thresholds at Saint John
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	22	3	1900	2
90 F (32.2 C): Days	2	1	1935	1
0 C (32 F): Ice days (max	94	88	1882	50
0 C (32 F): Frost days (min	94	179	1875	144
-10 C (14 F): Days with min	94	84	1875	33
-20 C (-4 F): Days with min	92	23	1875	18
-30 C (-22 F): Days with min	1	1	1957	1
20 C (68 F): Tropical nights (min	1	1	1908	1
10 mm (0.39 in): Days with 10 mm or more rain	94	61	1954	40
25 mm (0.98 in): Days with 25 mm or more rain	94	18	1954	12
50 mm (1.97 in): Days with 50 mm or more rain	69	6	1887	3
100 mm (3.94 in): Days with 100 mm or more rain	7	1	1900	1
10 cm (3.9 in): Days with 10 cm or more snowfall	93	14	1879	6
25 cm (9.8 in): Days with 25 cm or more snowfall	38	3	1874	1
50 cm (19.7 in): Days with 50 cm or more snowfall	3	1	1878	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1886.

Download the Data

Data for Saint John 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Saint John Threshold Days by Year (CA008104800)

Key Facts for Saint John Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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