St. Catharine Threshold Days by Year (USC00237388)

18 fixed thresholds counted per year at St. Catharine (USC00237388): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St. Catharine Thresholds

St. Catharine: days with 10 mm (0.39 in) or more of precipitation in 14 years, most in 1915 with 41.
St. Catharine: days with 25 mm (0.98 in) or more of precipitation in 14 years, most in 1915 with 14.
St. Catharine: days with a maximum temperature at or above 30 C (86 F) in 12 years, most in 1914 with 71.
St. Catharine: days with a maximum temperature at or above 90 F (32.2 C) in 12 years, most in 1914 with 41.
18 fixed thresholds have at least one qualifying day at St. Catharine.

Days at or above 30 C (86 F)

12 years with a qualifying day

Days per year at St. Catharine with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 71 in 1914.

Days at or above 30 C (86 F) per year at St. Catharine
Year	Days	Decade average
1914	71	48.7
1915	7	48.7
1916	58	48.7
1917	40	48.7
1918	60	48.7
1919	56	48.7
1920	41	50.3
1921	66	50.3
1922	59	50.3
1923	48	50.3
1924	29	50.3
1925	59	50.3

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

First to last qualifying date each year at St. Catharine
Year	First date	Last date
1914	1914-05-24	1914-09-05
1915	1915-05-13	1915-09-13
1916	1916-06-22	1916-10-08
1917	1917-06-12	1917-09-16
1918	1918-05-25	1918-08-29
1919	1919-06-16	1919-10-02
1920	1920-06-12	1920-09-25
1921	1921-05-21	1921-09-16
1922	1922-06-06	1922-10-04
1923	1923-05-31	1923-09-04
1924	1924-06-14	1924-08-30
1925	1925-04-23	1925-09-19

Every Fixed Threshold

Fixed thresholds at St. Catharine
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	12	71	1914	59
35 C (95 F): Days	10	25	1918	9
40 C (104 F): Days	1	2	1918	2
90 F (32.2 C): Days	12	41	1914	34
100 F (37.8 C): Days	3	8	1918	1
0 C (32 F): Ice days (max	12	43	1924	23
0 C (32 F): Frost days (min	12	131	1917	131
-10 C (14 F): Days with min	12	45	1916	31
-20 C (-4 F): Days with min	9	12	1918	2
-30 C (-22 F): Days with min	2	1	1918	1
20 C (68 F): Tropical nights (min	12	62	1914	40
25 C (77 F): Days with min	3	9	1914	1
10 mm (0.39 in): Days with 10 mm or more rain	14	41	1915	27
25 mm (0.98 in): Days with 25 mm or more rain	14	14	1915	6
50 mm (1.97 in): Days with 50 mm or more rain	12	4	1916	2
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1922	1
10 cm (3.9 in): Days with 10 cm or more snowfall	4	6	1924	2
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1925	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1914.

Download the Data

Data for St. Catharine 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).

St. Catharine Threshold Days by Year (USC00237388)

Key Facts for St. Catharine Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related