Keeline 3 W Threshold Days by Year (USC00485085)

15 fixed thresholds counted per year at Keeline 3 W (USC00485085): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Keeline 3 W Thresholds

Keeline 3 W: days with 10 mm (0.39 in) or more of precipitation in 33 years, most in 1967 with 19.
Keeline 3 W: days with 10 cm (3.9 in) or more of snowfall in 32 years, most in 1967 with 11.
Keeline 3 W: nights with a minimum temperature at or below 0 C (32 F) in 31 years, most in 1970 with 201.
Keeline 3 W: nights with a minimum temperature at or below -10 C (14 F) in 31 years, most in 1978 with 101.
15 fixed thresholds have at least one qualifying day at Keeline 3 W.

Days at or above 30 C (86 F)

29 years with a qualifying day

Days per year at Keeline 3 W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 63 in 1980.

Days at or above 30 C (86 F) per year at Keeline 3 W
Year	Days	Decade average
1956	42	38
1957	30	38
1958	30	38
1959	50	38
1960	54	40.5
1961	41	40.5
1962	28	40.5
1963	49	40.5
1964	51	40.5
1965	17	40.5
1966	57	40.5
1967	26	40.5
1968	33	40.5
1969	49	40.5
1970	56	43.3
1971	38	43.3
1972	27	43.3
1973	35	43.3
1974	50	43.3
1977	43	43.3
1978	50	43.3
1979	47	43.3
1980	63	52.4
1981	53	52.4
1982	39	52.4
1983	60	52.4
1984	56	52.4
1985	58	52.4
1986	38	52.4

For each year, a bar from the first to the last day at Keeline 3 W meeting 30 C (86 F).

First to last qualifying date each year at Keeline 3 W
Year	First date	Last date
1956	1956-06-04	1956-09-20
1957	1957-06-30	1957-09-29
1958	1958-05-29	1958-09-23
1959	1959-06-06	1959-09-14
1960	1960-06-03	1960-09-05
1961	1961-06-09	1961-08-29
1962	1962-06-27	1962-09-12
1963	1963-05-07	1963-10-04
1964	1964-05-20	1964-09-09
1965	1965-07-07	1965-08-29
1966	1966-05-04	1966-09-23
1967	1967-06-03	1967-09-06
1968	1968-06-03	1968-08-22
1969	1969-05-25	1969-09-04
1970	1970-06-22	1970-09-05
1971	1971-06-23	1971-09-13
1972	1972-06-29	1972-08-17
1973	1973-06-09	1973-08-31
1974	1974-06-13	1974-09-10
1977	1977-06-02	1977-09-08
1978	1978-06-13	1978-09-10
1979	1979-06-12	1979-09-19
1980	1980-06-11	1980-09-30
1981	1981-06-06	1981-09-19
1982	1982-07-03	1982-09-10
1983	1983-06-18	1983-09-16
1984	1984-06-15	1984-09-19
1985	1985-06-07	1985-09-01
1986	1986-06-07	1986-08-29

Every Fixed Threshold

Fixed thresholds at Keeline 3 W
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	29	63	1980	38
35 C (95 F): Days	27	18	1980	3
90 F (32.2 C): Days	29	44	1980	17
100 F (37.8 C): Days	10	3	1981	1
0 C (32 F): Ice days (max	29	69	1978	17
0 C (32 F): Frost days (min	31	201	1970	178
-10 C (14 F): Days with min	31	101	1978	46
-20 C (-4 F): Days with min	31	26	1978	12
-30 C (-22 F): Days with min	16	6	1972	4
20 C (68 F): Tropical nights (min	5	1	1966	1
10 mm (0.39 in): Days with 10 mm or more rain	33	19	1967	12
25 mm (0.98 in): Days with 25 mm or more rain	20	5	1965	3
50 mm (1.97 in): Days with 50 mm or more rain	4	1	1971	1
10 cm (3.9 in): Days with 10 cm or more snowfall	32	11	1967	7
25 cm (9.8 in): Days with 25 cm or more snowfall	7	2	1983	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1956.

Download the Data

Data for Keeline 3 W 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).

Keeline 3 W Threshold Days by Year (USC00485085)

Key Facts for Keeline 3 W Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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