Spearman Threshold Days by Year (USC00418523)

19 fixed thresholds counted per year at Spearman (USC00418523): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Spearman Thresholds

Spearman: days with 10 mm (0.39 in) or more of precipitation in 80 years, most in 1950 with 29.
Spearman: days with 25 mm (0.98 in) or more of precipitation in 78 years, most in 1950 with 11.
Spearman: nights with a minimum temperature at or below 0 C (32 F) in 72 years, most in 1947 with 142.
Spearman: nights with a minimum temperature at or below -10 C (14 F) in 72 years, most in 1978 with 36.
19 fixed thresholds have at least one qualifying day at Spearman.

Days at or above 30 C (86 F)

64 years with a qualifying day

Days per year at Spearman with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 154 in 2001.

Days at or above 30 C (86 F) per year at Spearman
Year	Days	Decade average
1928	97	93.5
1929	90	93.5
1930	105	108.2
1931	116	108.2
1932	86	108.2
1933	119	108.2
1934	121	108.2
1935	95	108.2
1936	103	108.2
1938	109	108.2
1939	120	108.2
1940	108	97.9
1942	86	97.9
1943	113	97.9
1944	84	97.9
1945	100	97.9
1947	98	97.9
1948	114	97.9
1949	80	97.9
1950	79	110.3
1951	98	110.3
1952	122	110.3
1953	125	110.3
1954	123	110.3
1955	119	110.3
1956	140	110.3
1957	89	110.3
1958	105	110.3
1959	103	110.3
1960	95	114.3
1963	151	114.3
1964	132	114.3
1965	98	114.3
1966	104	114.3
1967	115	114.3
1968	117	114.3
1969	102	114.3
1970	122	118.1
1971	107	118.1
1972	136	118.1
1973	107	118.1
1974	113	118.1
1975	126	118.1
1976	103	118.1
1977	124	118.1
1978	118	118.1
1979	125	118.1
1980	125	107.5
1981	116	107.5
1986	114	107.5
1987	89	107.5
1988	95	107.5
1989	106	107.5
1990	110	112.7
1991	125	112.7
1992	100	112.7
1993	116	112.7
1995	93	112.7
1996	104	112.7
1997	108	112.7
1998	149	112.7
1999	109	112.7
2000	146	150
2001	154	150

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

First to last qualifying date each year at Spearman
Year	First date	Last date
1928	1928-04-28	1928-10-10
1929	1929-05-10	1929-10-09
1930	1930-04-09	1930-10-09
1931	1931-05-15	1931-10-26
1932	1932-04-03	1932-10-17
1933	1933-04-17	1933-09-30
1934	1934-04-09	1934-10-22
1935	1935-05-11	1935-10-12
1936	1936-04-13	1936-10-19
1938	1938-04-30	1938-10-05
1939	1939-04-23	1939-10-24
1940	1940-03-31	1940-10-21
1942	1942-04-04	1942-10-01
1943	1943-03-29	1943-10-29
1944	1944-05-22	1944-09-30
1945	1945-04-09	1945-09-27
1947	1947-05-03	1947-10-22
1948	1948-04-11	1948-10-16
1949	1949-04-26	1949-10-09
1950	1950-03-26	1950-11-01
1951	1951-04-25	1951-10-16
1952	1952-04-08	1952-10-31
1953	1953-04-22	1953-10-13
1954	1954-04-06	1954-10-19
1955	1955-04-16	1955-12-25
1956	1956-03-26	1956-10-25
1957	1957-04-19	1957-10-06
1958	1958-05-22	1958-10-20
1959	1959-04-07	1959-10-26
1960	1960-03-28	1960-10-06
1963	1963-02-01	1963-10-26
1964	1964-04-01	1964-10-17
1965	1965-04-17	1965-10-15
1966	1966-03-31	1966-10-21
1967	1967-03-29	1967-10-23
1968	1968-03-29	1968-10-30
1969	1969-04-22	1969-10-10
1970	1970-02-17	1970-10-06
1971	1971-03-27	1971-09-28
1972	1972-02-29	1972-10-17
1973	1973-04-29	1973-10-08
1974	1974-03-30	1974-10-05
1975	1975-03-20	1975-10-27
1976	1976-03-25	1976-10-12
1977	1977-04-09	1977-10-01
1978	1978-03-22	1978-10-11
1979	1979-04-07	1979-10-27
1980	1980-04-19	1980-11-08
1981	1981-02-20	1981-10-01
1986	1986-03-30	1986-09-27
1987	1987-04-17	1987-10-09
1988	1988-04-07	1988-10-18
1989	1989-03-10	1989-10-16
1990	1990-04-23	1990-10-16
1991	1991-04-07	1991-10-22
1992	1992-04-10	1992-10-14
1993	1993-04-18	1993-10-07
1995	1995-03-21	1995-10-22
1996	1996-04-17	1996-10-13
1997	1997-05-13	1997-10-06
1998	1998-03-23	1998-11-25
1999	1999-04-20	1999-11-09
2000	2000-04-05	2000-10-04
2001	2001-04-14	2001-10-31

Every Fixed Threshold

Fixed thresholds at Spearman
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	64	154	2001	154
35 C (95 F): Days	64	108	2000	75
40 C (104 F): Days	48	29	2001	29
90 F (32.2 C): Days	64	133	2000	116
100 F (37.8 C): Days	63	60	2000	47
110 F (43.3 C): Days	3	2	1936	2
0 C (32 F): Ice days (max	64	25	1948	3
0 C (32 F): Frost days (min	72	142	1947	90
-10 C (14 F): Days with min	72	36	1978	5
-20 C (-4 F): Days with min	30	6	1948	1
-30 C (-22 F): Days with min	1	1	1959	1
20 C (68 F): Tropical nights (min	72	58	2000	51
25 C (77 F): Days with min	12	9	1934	1
10 mm (0.39 in): Days with 10 mm or more rain	80	29	1950	14
25 mm (0.98 in): Days with 25 mm or more rain	78	11	1950	4
50 mm (1.97 in): Days with 50 mm or more rain	50	3	1923	2
100 mm (3.94 in): Days with 100 mm or more rain	7	1	1936	1
10 cm (3.9 in): Days with 10 cm or more snowfall	57	5	1932	2
25 cm (9.8 in): Days with 25 cm or more snowfall	7	2	1987	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1928.

Download the Data

Data for Spearman 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).

Spearman Threshold Days by Year (USC00418523)

Key Facts for Spearman Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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