Sheldon Threshold Days by Year (USC00267443)

13 fixed thresholds counted per year at Sheldon (USC00267443): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sheldon Thresholds

Sheldon: days with a maximum temperature at or below 0 C (32 F) in 37 years, most in 1952 with 78.
Sheldon: days with 10 mm (0.39 in) or more of precipitation in 37 years, most in 1944 with 14.
Sheldon: nights with a minimum temperature at or below 0 C (32 F) in 36 years, most in 1944 with 243.
Sheldon: nights with a minimum temperature at or below -10 C (14 F) in 36 years, most in 1964 with 70.
13 fixed thresholds have at least one qualifying day at Sheldon.

Days at or above 30 C (86 F)

33 years with a qualifying day

Days per year at Sheldon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 28 in 1934.

Days at or above 30 C (86 F) per year at Sheldon
Year	Days	Decade average
1934	28	11.2
1935	6	11.2
1936	9	11.2
1937	5	11.2
1938	5	11.2
1939	14	11.2
1940	16	7
1941	2	7
1942	12	7
1943	5	7
1944	2	7
1945	6	7
1946	9	7
1947	4	7
1951	6	6.8
1953	2	6.8
1954	7	6.8
1955	10	6.8
1956	1	6.8
1957	1	6.8
1958	5	6.8
1959	22	6.8
1960	17	10.3
1961	19	10.3
1962	1	10.3
1963	1	10.3
1964	4	10.3
1966	15	10.3
1967	18	10.3
1968	10	10.3
1969	8	10.3
1970	11	9
1971	7	9

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

First to last qualifying date each year at Sheldon
Year	First date	Last date
1934	1934-06-30	1934-09-04
1935	1935-07-12	1935-08-13
1936	1936-07-16	1936-08-01
1937	1937-06-28	1937-08-12
1938	1938-07-21	1938-07-25
1939	1939-07-08	1939-08-22
1940	1940-06-11	1940-08-19
1941	1941-07-21	1941-07-22
1942	1942-07-21	1942-08-23
1943	1943-07-30	1943-08-16
1944	1944-09-08	1944-09-11
1945	1945-07-25	1945-08-05
1946	1946-07-20	1946-08-19
1947	1947-07-17	1947-07-20
1951	1951-07-17	1951-08-17
1953	1953-07-12	1953-08-12
1954	1954-06-22	1954-08-02
1955	1955-07-14	1955-09-06
1956	1956-07-24	1956-07-24
1957	1957-09-06	1957-09-06
1958	1958-07-28	1958-08-15
1959	1959-06-20	1959-08-16
1960	1960-06-13	1960-08-11
1961	1961-06-19	1961-08-22
1962	1962-07-21	1962-07-21
1963	1963-08-07	1963-08-07
1964	1964-07-25	1964-08-11
1966	1966-07-17	1966-08-24
1967	1967-07-02	1967-08-30
1968	1968-06-26	1968-08-07
1969	1969-07-19	1969-09-01
1970	1970-06-03	1970-08-22
1971	1971-07-28	1971-08-12

Every Fixed Threshold

Fixed thresholds at Sheldon
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	33	28	1934	7
35 C (95 F): Days	3	2	1934	2
90 F (32.2 C): Days	16	6	1934	2
100 F (37.8 C): Days	1	1	1967	1
0 C (32 F): Ice days (max	37	78	1952	50
0 C (32 F): Frost days (min	36	243	1944	233
-10 C (14 F): Days with min	36	70	1964	54
-20 C (-4 F): Days with min	28	14	1949	5
-30 C (-22 F): Days with min	1	1	1962	1
10 mm (0.39 in): Days with 10 mm or more rain	37	14	1944	10
25 mm (0.98 in): Days with 25 mm or more rain	13	3	1971	3
10 cm (3.9 in): Days with 10 cm or more snowfall	35	12	1970	11
25 cm (9.8 in): Days with 25 cm or more snowfall	7	3	1971	3

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 Sheldon 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).

Sheldon Threshold Days by Year (USC00267443)

Key Facts for Sheldon Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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