Clarence Threshold Days by Year (USC00131528)

19 fixed thresholds counted per year at Clarence (USC00131528): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Clarence Thresholds

Clarence: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1973 with 47.
Clarence: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 1973 with 13.
Clarence: days with 10 cm (3.9 in) or more of snowfall in 33 years, most in 1951 with 7.
Clarence: days with 50 mm (1.97 in) or more of precipitation in 32 years, most in 1961 with 5.
19 fixed thresholds have at least one qualifying day at Clarence.

Days at or above 30 C (86 F)

14 years with a qualifying day

Days per year at Clarence with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 72 in 1936.

Days at or above 30 C (86 F) per year at Clarence
Year	Days	Decade average
1934	61	58.2
1935	55	58.2
1936	72	58.2
1937	61	58.2
1938	45	58.2
1939	55	58.2
1940	51	47.1
1941	60	47.1
1942	46	47.1
1943	50	47.1
1944	42	47.1
1945	35	47.1
1946	34	47.1
1947	59	47.1

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

First to last qualifying date each year at Clarence
Year	First date	Last date
1934	1934-05-03	1934-08-18
1935	1935-06-12	1935-09-24
1936	1936-05-06	1936-09-22
1937	1937-05-29	1937-10-29
1938	1938-05-03	1938-10-09
1939	1939-05-21	1939-10-07
1940	1940-05-13	1940-09-21
1941	1941-05-15	1941-09-22
1942	1942-04-29	1942-09-16
1943	1943-05-29	1943-10-09
1944	1944-05-15	1944-09-17
1945	1945-06-23	1945-09-09
1946	1946-06-07	1946-09-06
1947	1947-06-09	1947-10-15

Every Fixed Threshold

Fixed thresholds at Clarence
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	14	72	1936	59
35 C (95 F): Days	14	28	1936	21
40 C (104 F): Days	2	8	1936	1
90 F (32.2 C): Days	14	50	1936	39
100 F (37.8 C): Days	5	19	1936	6
110 F (43.3 C): Days	1	2	1936	2
0 C (32 F): Ice days (max	14	73	1937	44
0 C (32 F): Frost days (min	14	161	1936	117
-10 C (14 F): Days with min	14	66	1936	40
-20 C (-4 F): Days with min	14	33	1936	6
-30 C (-22 F): Days with min	3	3	1936	3
20 C (68 F): Tropical nights (min	14	27	1936	21
25 C (77 F): Days with min	2	1	1936	1
10 mm (0.39 in): Days with 10 mm or more rain	41	47	1973	30
25 mm (0.98 in): Days with 25 mm or more rain	41	13	1973	8
50 mm (1.97 in): Days with 50 mm or more rain	32	5	1961	2
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1941	1
10 cm (3.9 in): Days with 10 cm or more snowfall	33	7	1951	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1953	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1934.

Download the Data

Data for Clarence 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).

Clarence Threshold Days by Year (USC00131528)

Key Facts for Clarence Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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