W Glacier Threshold Days by Year (USC00248809)

16 fixed thresholds counted per year at W Glacier (USC00248809): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for W Glacier Thresholds

W Glacier: nights with a minimum temperature at or below 0 C (32 F) in 77 years, most in 1970 with 216.
W Glacier: nights with a minimum temperature at or below -10 C (14 F) in 77 years, most in 1951 with 72.
W Glacier: days with a maximum temperature at or above 30 C (86 F) in 76 years, most in 2021 with 50.
W Glacier: days with a maximum temperature at or below 0 C (32 F) in 76 years, most in 1955 with 84.
16 fixed thresholds have at least one qualifying day at W Glacier.

Days at or above 30 C (86 F)

76 years with a qualifying day

Days per year at W Glacier with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 50 in 2021.

Days at or above 30 C (86 F) per year at W Glacier
Year	Days	Decade average
1950	8	12.1
1951	17	12.1
1952	7	12.1
1953	17	12.1
1954	4	12.1
1955	11	12.1
1956	16	12.1
1957	5	12.1
1958	20	12.1
1959	16	12.1
1960	14	16.6
1961	25	16.6
1962	6	16.6
1963	12	16.6
1964	3	16.6
1965	12	16.6
1966	19	16.6
1967	42	16.6
1968	18	16.6
1969	15	16.6
1970	27	19.3
1971	26	19.3
1972	15	19.3
1973	40	19.3
1974	27	19.3
1975	18	19.3
1976	3	19.3
1977	9	19.3
1978	9	19.3
1980	3	15.9
1981	16	15.9
1982	4	15.9
1983	9	15.9
1984	18	15.9
1985	25	15.9
1986	22	15.9
1987	10	15.9
1988	31	15.9
1989	21	15.9
1990	18	13.6
1991	12	13.6
1992	17	13.6
1993	1	13.6
1994	28	13.6
1995	1	13.6
1996	16	13.6
1997	6	13.6
1998	27	13.6
1999	10	13.6
2000	22	27.1
2001	24	27.1
2002	16	27.1
2003	47	27.1
2004	18	27.1
2005	21	27.1
2006	41	27.1
2007	42	27.1
2008	22	27.1
2009	18	27.1
2010	4	17.8
2011	7	17.8
2012	21	17.8
2013	17	17.8
2014	14	17.8
2015	32	17.8
2016	16	17.8
2017	33	17.8
2018	22	17.8
2019	12	17.8
2020	26	30
2021	50	30
2022	38	30
2023	27	30
2024	22	30
2025	24	30
2026	23	30

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

First to last qualifying date each year at W Glacier
Year	First date	Last date
1950	1950-06-30	1950-09-04
1951	1951-07-13	1951-08-04
1952	1952-07-09	1952-08-05
1953	1953-07-08	1953-08-20
1954	1954-07-05	1954-07-20
1955	1955-06-22	1955-09-03
1956	1956-06-10	1956-08-23
1957	1957-06-05	1957-07-25
1958	1958-06-23	1958-09-12
1959	1959-06-12	1959-08-08
1960	1960-07-07	1960-08-09
1961	1961-06-16	1961-08-24
1962	1962-07-23	1962-08-17
1963	1963-07-03	1963-09-28
1964	1964-07-09	1964-07-13
1965	1965-07-01	1965-08-10
1966	1966-05-26	1966-09-10
1967	1967-07-03	1967-09-06
1968	1968-06-19	1968-08-04
1969	1969-06-03	1969-09-11
1970	1970-06-03	1970-08-26
1971	1971-06-22	1971-08-28
1972	1972-07-29	1972-08-30
1973	1973-06-22	1973-09-11
1974	1974-06-12	1974-08-06
1975	1975-07-03	1975-08-15
1976	1976-06-29	1976-07-18
1977	1977-06-06	1977-08-19
1978	1978-06-21	1978-08-10
1980	1980-07-23	1980-07-29
1981	1981-07-04	1981-09-16
1982	1982-07-28	1982-07-31
1983	1983-05-29	1983-08-08
1984	1984-06-28	1984-08-23
1985	1985-06-28	1985-07-27
1986	1986-05-26	1986-08-29
1987	1987-06-14	1987-07-30
1988	1988-06-16	1988-09-07
1989	1989-07-07	1989-08-13
1990	1990-06-24	1990-08-16
1991	1991-07-03	1991-08-31
1992	1992-06-22	1992-08-19
1993	1993-05-12	1993-05-12
1994	1994-06-22	1994-08-21
1995	1995-07-10	1995-07-10
1996	1996-06-07	1996-08-29
1997	1997-07-28	1997-08-07
1998	1998-07-10	1998-09-07
1999	1999-07-12	1999-08-27
2000	2000-06-30	2000-08-24
2001	2001-07-03	2001-08-28
2002	2002-06-26	2002-08-24
2003	2003-06-18	2003-09-07
2004	2004-06-23	2004-08-17
2005	2005-06-21	2005-08-21
2006	2006-05-18	2006-09-07
2007	2007-06-02	2007-08-31
2008	2008-06-21	2008-08-19
2009	2009-07-04	2009-09-03
2010	2010-07-25	2010-08-27
2011	2011-07-18	2011-08-29
2012	2012-07-07	2012-08-29
2013	2013-06-30	2013-09-02
2014	2014-07-03	2014-08-12
2015	2015-06-08	2015-08-27
2016	2016-06-06	2016-08-17
2017	2017-07-05	2017-09-04
2018	2018-07-06	2018-08-12
2019	2019-07-23	2019-08-22
2020	2020-05-30	2020-09-06
2021	2021-06-02	2021-08-17
2022	2022-06-28	2022-09-07
2023	2023-07-01	2023-08-30
2024	2024-07-08	2024-08-19
2025	2025-05-31	2025-09-04
2026	2026-05-28	2026-08-28

Every Fixed Threshold

Fixed thresholds at W Glacier
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	76	50	2021	23
35 C (95 F): Days	22	9	2007	6
90 F (32.2 C): Days	62	33	2003	4
100 F (37.8 C): Days	1	1	2018	1
0 C (32 F): Ice days (max	76	84	1955	16
0 C (32 F): Frost days (min	77	216	1970	98
-10 C (14 F): Days with min	77	72	1951	10
-20 C (-4 F): Days with min	73	25	1950	4
-30 C (-22 F): Days with min	31	7	1950	2
20 C (68 F): Tropical nights (min	3	2	2021	2
10 mm (0.39 in): Days with 10 mm or more rain	76	37	1995	21
25 mm (0.98 in): Days with 25 mm or more rain	66	8	1964	5
50 mm (1.97 in): Days with 50 mm or more rain	7	2	1964	1
10 cm (3.9 in): Days with 10 cm or more snowfall	71	24	1996	4
25 cm (9.8 in): Days with 25 cm or more snowfall	41	5	1957	1
50 cm (19.7 in): Days with 50 cm or more snowfall	2	1	1992	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.

Download the Data

Data for W Glacier 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

W Glacier Threshold Days by Year (USC00248809)

Key Facts for W Glacier Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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