Spencer Threshold Days by Year (USC00108604)

13 fixed thresholds counted per year at Spencer (USC00108604): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Spencer Thresholds

Spencer: days with 10 mm (0.39 in) or more of precipitation in 33 years, most in 1938 with 22.
Spencer: nights with a minimum temperature at or below 0 C (32 F) in 27 years, most in 1950 with 246.
Spencer: nights with a minimum temperature at or below -10 C (14 F) in 27 years, most in 1944 with 111.
Spencer: nights with a minimum temperature at or below -20 C (-4 F) in 27 years, most in 1955 with 37.
13 fixed thresholds have at least one qualifying day at Spencer.

Days at or above 30 C (86 F)

26 years with a qualifying day

Days per year at Spencer with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 39 in 2007.

Days at or above 30 C (86 F) per year at Spencer
Year	Days	Decade average
1918	10	10
1920	11	11
1937	28	22.3
1938	8	22.3
1939	31	22.3
1940	38	18.6
1941	14	18.6
1942	28	18.6
1943	16	18.6
1944	1	18.6
1945	13	18.6
1946	20	18.6
1947	24	18.6
1948	13	18.6
1949	19	18.6
1950	9	15.4
1951	19	15.4
1952	11	15.4
1953	24	15.4
1954	23	15.4
1955	21	15.4
1956	13	15.4
1957	5	15.4
1958	11	15.4
1959	18	15.4
2007	39	39

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

First to last qualifying date each year at Spencer
Year	First date	Last date
1918	1918-06-09	1918-07-31
1920	1920-07-20	1920-08-24
1937	1937-06-22	1937-09-20
1938	1938-07-15	1938-08-22
1939	1939-06-30	1939-08-24
1940	1940-06-13	1940-08-31
1941	1941-06-23	1941-08-08
1942	1942-07-04	1942-09-04
1943	1943-07-07	1943-09-14
1944	1944-07-18	1944-07-18
1945	1945-07-20	1945-08-17
1946	1946-07-11	1946-08-22
1947	1947-07-06	1947-09-05
1948	1948-07-10	1948-09-14
1949	1949-07-02	1949-08-22
1950	1950-07-01	1950-09-07
1951	1951-07-13	1951-08-18
1952	1952-07-09	1952-08-22
1953	1953-07-07	1953-09-12
1954	1954-06-22	1954-08-30
1955	1955-07-14	1955-09-07
1956	1956-06-26	1956-08-23
1957	1957-07-09	1957-08-10
1958	1958-07-12	1958-09-01
1959	1959-06-12	1959-08-17
2007	2007-06-20	2007-09-03

Every Fixed Threshold

Fixed thresholds at Spencer
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	26	39	2007	39
35 C (95 F): Days	3	2	2007	2
90 F (32.2 C): Days	23	18	1940	14
0 C (32 F): Ice days (max	26	112	1952	64
0 C (32 F): Frost days (min	27	246	1950	218
-10 C (14 F): Days with min	27	111	1944	77
-20 C (-4 F): Days with min	27	37	1955	12
-30 C (-22 F): Days with min	11	5	1950	1
10 mm (0.39 in): Days with 10 mm or more rain	33	22	1938	6
25 mm (0.98 in): Days with 25 mm or more rain	23	6	1946	1
50 mm (1.97 in): Days with 50 mm or more rain	2	1	1918	1
10 cm (3.9 in): Days with 10 cm or more snowfall	22	19	1952	12
25 cm (9.8 in): Days with 25 cm or more snowfall	8	4	1959	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1918.

Download the Data

Data for Spencer 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).

Spencer Threshold Days by Year (USC00108604)

Key Facts for Spencer Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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