Spokane Threshold Days by Year (USC00457933)

14 fixed thresholds counted per year at Spokane (USC00457933): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Spokane Thresholds

Spokane: days with a maximum temperature at or above 30 C (86 F) in 27 years, most in 1967 with 80.
Spokane: days with a maximum temperature at or above 35 C (95 F) in 27 years, most in 1958 with 32.
Spokane: days with a maximum temperature at or above 90 F (32.2 C) in 27 years, most in 1958 with 63.
Spokane: days with a maximum temperature at or below 0 C (32 F) in 27 years, most in 1979 with 42.
14 fixed thresholds have at least one qualifying day at Spokane.

Days at or above 30 C (86 F)

27 years with a qualifying day

Days per year at Spokane with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 80 in 1967.

Days at or above 30 C (86 F) per year at Spokane
Year	Days	Decade average
1954	34	52.3
1955	57	52.3
1956	60	52.3
1957	50	52.3
1958	78	52.3
1959	35	52.3
1960	49	50.7
1961	65	50.7
1962	38	50.7
1963	55	50.7
1964	34	50.7
1965	40	50.7
1966	51	50.7
1967	80	50.7
1968	46	50.7
1969	49	50.7
1970	60	39.5
1971	45	39.5
1972	34	39.5
1973	43	39.5
1974	27	39.5
1975	20	39.5
1976	32	39.5
1977	47	39.5
1978	32	39.5
1979	55	39.5
1980	24	24

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

First to last qualifying date each year at Spokane
Year	First date	Last date
1954	1954-05-18	1954-09-11
1955	1955-06-09	1955-09-11
1956	1956-05-16	1956-09-19
1957	1957-04-29	1957-09-26
1958	1958-05-18	1958-09-11
1959	1959-06-02	1959-09-12
1960	1960-05-11	1960-09-14
1961	1961-05-25	1961-08-30
1962	1962-06-24	1962-09-27
1963	1963-05-22	1963-09-29
1964	1964-06-25	1964-09-16
1965	1965-05-28	1965-08-19
1966	1966-05-02	1966-09-23
1967	1967-06-15	1967-09-29
1968	1968-06-18	1968-09-11
1969	1969-05-23	1969-09-13
1970	1970-05-03	1970-09-01
1971	1971-05-03	1971-09-10
1972	1972-05-29	1972-09-04
1973	1973-05-14	1973-09-11
1974	1974-06-12	1974-08-31
1975	1975-07-03	1975-09-15
1976	1976-06-28	1976-09-04
1977	1977-04-23	1977-08-21
1978	1978-06-03	1978-08-10
1979	1979-06-02	1979-09-22
1980	1980-05-05	1980-10-07

Every Fixed Threshold

Fixed thresholds at Spokane
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	27	80	1967	24
35 C (95 F): Days	27	32	1958	5
40 C (104 F): Days	10	4	1961	2
90 F (32.2 C): Days	27	63	1958	14
100 F (37.8 C): Days	21	12	1967	2
0 C (32 F): Ice days (max	27	42	1979	32
0 C (32 F): Frost days (min	27	142	1975	105
-10 C (14 F): Days with min	27	24	1979	19
-20 C (-4 F): Days with min	13	7	1979	7
-30 C (-22 F): Days with min	1	1	1979	1
20 C (68 F): Tropical nights (min	19	5	1958	2
10 mm (0.39 in): Days with 10 mm or more rain	22	14	1975	8
25 mm (0.98 in): Days with 25 mm or more rain	12	3	1968	2
10 cm (3.9 in): Days with 10 cm or more snowfall	1	2	1954	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1954.

Download the Data

Data for Spokane 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).

Spokane Threshold Days by Year (USC00457933)

Key Facts for Spokane Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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