Cass Lake Threshold Days by Year (USC00211374)

18 fixed thresholds counted per year at Cass Lake (USC00211374): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cass Lake Thresholds

Cass Lake: days with 10 mm (0.39 in) or more of precipitation in 73 years, most in 2019 with 30.
Cass Lake: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 1962 with 10.
Cass Lake: days with a maximum temperature at or above 30 C (86 F) in 66 years, most in 1988 with 39.
Cass Lake: days with a maximum temperature at or below 0 C (32 F) in 66 years, most in 1972 with 122.
18 fixed thresholds have at least one qualifying day at Cass Lake.

Days at or above 30 C (86 F)

66 years with a qualifying day

Days per year at Cass Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 39 in 1988.

Days at or above 30 C (86 F) per year at Cass Lake
Year	Days	Decade average
1957	11	14.7
1958	12	14.7
1959	21	14.7
1960	17	15.2
1961	22	15.2
1962	4	15.2
1963	16	15.2
1964	20	15.2
1965	5	15.2
1966	23	15.2
1967	15	15.2
1968	9	15.2
1969	21	15.2
1970	30	15.1
1971	13	15.1
1972	15	15.1
1973	10	15.1
1974	12	15.1
1975	13	15.1
1977	17	15.1
1978	16	15.1
1979	10	15.1
1980	25	21.5
1981	7	21.5
1982	12	21.5
1983	30	21.5
1984	20	21.5
1985	6	21.5
1986	16	21.5
1987	31	21.5
1988	39	21.5
1989	29	21.5
1990	13	11.6
1991	18	11.6
1992	9	11.6
1993	6	11.6
1994	2	11.6
1995	21	11.6
1998	13	11.6
1999	11	11.6
2001	23	14.2
2002	15	14.2
2003	15	14.2
2004	7	14.2
2005	24	14.2
2006	20	14.2
2007	19	14.2
2008	3	14.2
2009	2	14.2
2010	12	15.6
2011	20	15.6
2012	24	15.6
2013	18	15.6
2014	10	15.6
2015	14	15.6
2016	13	15.6
2017	12	15.6
2018	18	15.6
2019	15	15.6
2020	17	17.7
2021	34	17.7
2022	11	17.7
2023	16	17.7
2024	13	17.7
2025	14	17.7
2026	19	17.7

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

First to last qualifying date each year at Cass Lake
Year	First date	Last date
1957	1957-07-08	1957-08-09
1958	1958-06-29	1958-08-14
1959	1959-05-02	1959-08-21
1960	1960-07-09	1960-09-06
1961	1961-06-09	1961-09-03
1962	1962-04-26	1962-08-28
1963	1963-06-06	1963-10-06
1964	1964-05-22	1964-08-07
1965	1965-07-23	1965-08-14
1966	1966-06-20	1966-08-28
1967	1967-07-11	1967-09-08
1968	1968-07-07	1968-08-08
1969	1969-05-28	1969-09-13
1970	1970-06-05	1970-09-20
1971	1971-06-13	1971-09-04
1972	1972-05-17	1972-08-30
1973	1973-06-10	1973-08-31
1974	1974-06-29	1974-08-20
1975	1975-05-21	1975-08-25
1977	1977-04-11	1977-07-24
1978	1978-05-26	1978-09-07
1979	1979-06-15	1979-09-17
1980	1980-04-22	1980-09-09
1981	1981-07-06	1981-08-14
1982	1982-07-05	1982-09-05
1983	1983-06-26	1983-09-03
1984	1984-07-03	1984-09-20
1985	1985-05-10	1985-08-09
1986	1986-05-29	1986-08-16
1987	1987-04-19	1987-08-12
1988	1988-05-30	1988-08-17
1989	1989-06-20	1989-08-19
1990	1990-06-26	1990-09-01
1991	1991-05-15	1991-08-29
1992	1992-05-08	1992-10-02
1993	1993-06-12	1993-08-26
1994	1994-05-20	1994-06-15
1995	1995-06-15	1995-09-05
1998	1998-05-19	1998-09-11
1999	1999-05-30	1999-08-28
2001	2001-06-09	2001-09-05
2002	2002-06-24	2002-09-08
2003	2003-07-02	2003-09-07
2004	2004-04-28	2004-09-03
2005	2005-06-19	2005-09-10
2006	2006-05-28	2006-08-27
2007	2007-06-11	2007-09-06
2008	2008-08-18	2008-09-02
2009	2009-08-13	2009-08-15
2010	2010-05-25	2010-08-31
2011	2011-06-07	2011-09-12
2012	2012-05-19	2012-09-05
2013	2013-05-15	2013-09-07
2014	2014-05-25	2014-08-16
2015	2015-06-10	2015-10-12
2016	2016-05-06	2016-08-24
2017	2017-06-03	2017-08-30
2018	2018-05-08	2018-09-17
2019	2019-05-31	2019-08-05
2020	2020-06-02	2020-08-24
2021	2021-06-04	2021-09-20
2022	2022-06-20	2022-09-02
2023	2023-06-02	2023-10-03
2024	2024-06-13	2024-09-29
2025	2025-05-12	2025-08-08
2026	2026-05-26	2026-10-11

Every Fixed Threshold

Fixed thresholds at Cass Lake
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	66	39	1988	19
35 C (95 F): Days	26	7	1988	2
40 C (104 F): Days	1	1	1988	1
90 F (32.2 C): Days	62	21	1988	8
100 F (37.8 C): Days	6	3	1988	1
0 C (32 F): Ice days (max	66	122	1972	52
0 C (32 F): Frost days (min	66	212	1967	118
-10 C (14 F): Days with min	66	126	1970	57
-20 C (-4 F): Days with min	66	78	1989	32
-30 C (-22 F): Days with min	65	33	1985	4
-40 C (-40 F): Days with min	25	6	1982	1
20 C (68 F): Tropical nights (min	53	15	2001	11
10 mm (0.39 in): Days with 10 mm or more rain	73	30	2019	17
25 mm (0.98 in): Days with 25 mm or more rain	72	10	1962	5
50 mm (1.97 in): Days with 50 mm or more rain	39	3	1962	2
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1974	1
10 cm (3.9 in): Days with 10 cm or more snowfall	63	10	1995	4
25 cm (9.8 in): Days with 25 cm or more snowfall	9	2	1995	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1957.

Download the Data

Data for Cass Lake 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).

Cass Lake Threshold Days by Year (USC00211374)

Key Facts for Cass Lake Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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