Clarence Threshold Days by Year (CA008200860)

13 fixed thresholds counted per year at Clarence (CA008200860): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Clarence Thresholds

Clarence: days with a maximum temperature at or below 0 C (32 F) in 25 years, most in 1965 with 72.
Clarence: nights with a minimum temperature at or below 0 C (32 F) in 25 years, most in 1972 with 184.
Clarence: nights with a minimum temperature at or below -10 C (14 F) in 25 years, most in 1962 with 65.
Clarence: days with 10 cm (3.9 in) or more of snowfall in 25 years, most in 1972 with 16.
13 fixed thresholds have at least one qualifying day at Clarence.

Days at or above 30 C (86 F)

17 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 8 in 1963.

Days at or above 30 C (86 F) per year at Clarence
Year	Days	Decade average
1959	5	5
1960	6	3.5
1961	2	3.5
1963	8	3.5
1964	1	3.5
1965	3	3.5
1969	1	3.5
1970	5	2.6
1971	1	2.6
1972	1	2.6
1973	1	2.6
1975	5	2.6
1976	2	2.6
1977	4	2.6
1978	2	2.6
1982	1	2
1983	3	2

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
1959	1959-07-23	1959-08-17
1960	1960-07-11	1960-09-09
1961	1961-08-10	1961-08-11
1963	1963-06-25	1963-07-30
1964	1964-07-27	1964-07-27
1965	1965-08-08	1965-09-23
1969	1969-09-01	1969-09-01
1970	1970-07-24	1970-08-16
1971	1971-07-01	1971-07-01
1972	1972-07-16	1972-07-16
1973	1973-07-09	1973-07-09
1975	1975-06-24	1975-08-11
1976	1976-06-24	1976-08-22
1977	1977-05-23	1977-08-29
1978	1978-07-21	1978-07-23
1982	1982-07-19	1982-07-19
1983	1983-06-22	1983-09-07

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	17	8	1963	3
90 F (32.2 C): Days	4	4	1963	1
0 C (32 F): Ice days (max	25	72	1965	47
0 C (32 F): Frost days (min	25	184	1972	137
-10 C (14 F): Days with min	25	65	1962	38
-20 C (-4 F): Days with min	24	10	1961	2
20 C (68 F): Tropical nights (min	12	4	1973	1
10 mm (0.39 in): Days with 10 mm or more rain	24	58	1972	34
25 mm (0.98 in): Days with 25 mm or more rain	24	15	1959	8
50 mm (1.97 in): Days with 50 mm or more rain	13	4	1959	2
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1976	1
10 cm (3.9 in): Days with 10 cm or more snowfall	25	16	1972	6
25 cm (9.8 in): Days with 25 cm or more snowfall	17	4	1967	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1959.

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 (CA008200860)

Key Facts for Clarence Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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