Thorsby Threshold Days by Year (CA003016440)

16 fixed thresholds counted per year at Thorsby (CA003016440): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Thorsby Thresholds

Thorsby: nights with a minimum temperature at or below 0 C (32 F) in 24 years, most in 1945 with 211.
Thorsby: nights with a minimum temperature at or below -10 C (14 F) in 24 years, most in 1948 with 126.
Thorsby: nights with a minimum temperature at or below -20 C (-4 F) in 24 years, most in 1936 with 73.
Thorsby: nights with a minimum temperature at or below -30 C (-22 F) in 24 years, most in 1936 with 24.
16 fixed thresholds have at least one qualifying day at Thorsby.

Days at or above 30 C (86 F)

19 years with a qualifying day

Days per year at Thorsby with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 1939.

Days at or above 30 C (86 F) per year at Thorsby
Year	Days	Decade average
1933	7	6
1935	3	6
1936	7	6
1937	4	6
1938	5	6
1939	10	6
1940	6	3.8
1941	5	3.8
1942	5	3.8
1944	1	3.8
1945	5	3.8
1946	2	3.8
1947	5	3.8
1948	1	3.8
1949	4	3.8
1954	1	2.8
1955	3	2.8
1956	3	2.8
1958	4	2.8

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

First to last qualifying date each year at Thorsby
Year	First date	Last date
1933	1933-06-14	1933-08-28
1935	1935-07-13	1935-07-23
1936	1936-05-26	1936-07-22
1937	1937-06-28	1937-08-04
1938	1938-07-21	1938-09-04
1939	1939-04-28	1939-08-14
1940	1940-05-22	1940-08-31
1941	1941-07-15	1941-07-19
1942	1942-07-15	1942-07-19
1944	1944-07-21	1944-07-21
1945	1945-05-29	1945-08-15
1946	1946-07-20	1946-08-23
1947	1947-07-07	1947-08-01
1948	1948-06-07	1948-06-07
1949	1949-06-06	1949-07-15
1954	1954-07-06	1954-07-06
1955	1955-07-14	1955-07-18
1956	1956-05-31	1956-07-20
1958	1958-05-28	1958-08-25

Every Fixed Threshold

Fixed thresholds at Thorsby
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	19	10	1939	4
35 C (95 F): Days	1	1	1937	1
90 F (32.2 C): Days	11	6	1936	1
0 C (32 F): Ice days (max	23	113	1955	96
0 C (32 F): Frost days (min	24	211	1945	200
-10 C (14 F): Days with min	24	126	1948	97
-20 C (-4 F): Days with min	24	73	1936	27
-30 C (-22 F): Days with min	24	24	1936	3
-40 C (-40 F): Days with min	11	6	1936	1
20 C (68 F): Tropical nights (min	1	1	1942	1
10 mm (0.39 in): Days with 10 mm or more rain	23	22	1953	9
25 mm (0.98 in): Days with 25 mm or more rain	21	7	1948	2
50 mm (1.97 in): Days with 50 mm or more rain	6	3	1944	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1944	1
10 cm (3.9 in): Days with 10 cm or more snowfall	22	10	1935	1
25 cm (9.8 in): Days with 25 cm or more snowfall	4	2	1948	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1933.

Download the Data

Data for Thorsby 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Thorsby Threshold Days by Year (CA003016440)

Key Facts for Thorsby Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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