Clearwater Threshold Days by Year (USC00081632)

11 fixed thresholds counted per year at Clearwater (USC00081632): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Clearwater Thresholds

Clearwater: days with a maximum temperature at or above 30 C (86 F) in 38 years, most in 1935 with 182.
Clearwater: days with a maximum temperature at or above 90 F (32.2 C) in 38 years, most in 1944 with 122.
Clearwater: nights with a minimum temperature at or above 20 C (68 F) in 38 years, most in 1947 with 197.
Clearwater: nights with a minimum temperature at or above 25 C (77 F) in 38 years, most in 1941 with 49.
11 fixed thresholds have at least one qualifying day at Clearwater.

Days at or above 30 C (86 F)

38 years with a qualifying day

Days per year at Clearwater with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 182 in 1935.

Days at or above 30 C (86 F) per year at Clearwater
Year	Days	Decade average
1932	141	160
1933	153	160
1934	162	160
1935	182	160
1936	168	160
1937	158	160
1938	161	160
1939	155	160
1940	125	150.9
1941	160	150.9
1942	127	150.9
1943	128	150.9
1944	171	150.9
1945	171	150.9
1946	164	150.9
1947	154	150.9
1949	158	150.9
1950	132	134.3
1951	141	134.3
1952	132	134.3
1953	132	134.3
1960	134	143.8
1961	151	143.8
1962	147	143.8
1963	134	143.8
1964	128	143.8
1965	148	143.8
1966	144	143.8
1967	145	143.8
1968	156	143.8
1969	151	143.8
1970	150	151.9
1971	160	151.9
1972	155	151.9
1973	152	151.9
1974	153	151.9
1975	177	151.9
1976	116	151.9

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

First to last qualifying date each year at Clearwater
Year	First date	Last date
1932	1932-04-25	1932-10-31
1933	1933-04-30	1933-10-29
1934	1934-04-03	1934-11-03
1935	1935-03-04	1935-11-11
1936	1936-04-09	1936-11-07
1937	1937-01-20	1937-10-18
1938	1938-03-25	1938-11-18
1939	1939-02-09	1939-10-29
1940	1940-04-07	1940-11-12
1941	1941-04-18	1941-11-01
1942	1942-04-07	1942-11-07
1943	1943-04-17	1943-11-07
1944	1944-03-06	1944-10-09
1945	1945-03-15	1945-10-22
1946	1946-04-15	1946-11-12
1947	1947-04-01	1947-10-27
1949	1949-03-25	1949-10-30
1950	1950-04-04	1950-11-01
1951	1951-03-06	1951-10-29
1952	1952-03-13	1952-10-05
1953	1953-03-03	1953-10-13
1960	1960-04-02	1960-10-27
1961	1961-02-21	1961-11-16
1962	1962-04-10	1962-10-15
1963	1963-03-19	1963-10-05
1964	1964-04-13	1964-11-14
1965	1965-04-11	1965-10-12
1966	1966-04-28	1966-10-23
1967	1967-04-12	1967-10-24
1968	1968-04-02	1968-10-16
1969	1969-04-04	1969-10-22
1970	1970-04-16	1970-10-16
1971	1971-02-26	1971-12-17
1972	1972-04-15	1972-11-13
1973	1973-03-15	1973-11-21
1974	1974-03-08	1974-11-06
1975	1975-03-28	1975-11-09
1976	1976-03-29	1976-10-19

Every Fixed Threshold

Fixed thresholds at Clearwater
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	38	182	1935	116
35 C (95 F): Days	21	10	1944	1
90 F (32.2 C): Days	38	122	1944	35
0 C (32 F): Frost days (min	21	6	1960	2
20 C (68 F): Tropical nights (min	38	197	1947	136
25 C (77 F): Days with min	38	49	1941	1
10 mm (0.39 in): Days with 10 mm or more rain	38	53	1973	37
25 mm (0.98 in): Days with 25 mm or more rain	38	22	1940	14
50 mm (1.97 in): Days with 50 mm or more rain	38	11	1945	3
100 mm (3.94 in): Days with 100 mm or more rain	23	3	1937	1
200 mm (7.87 in): Days with 200 mm or more rain	5	2	1937	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1932.

Download the Data

Data for Clearwater 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).

Clearwater Threshold Days by Year (USC00081632)

Key Facts for Clearwater Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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