Summer Lake 1 S Threshold Days by Year (USC00358173)

16 fixed thresholds counted per year at Summer Lake 1 S (USC00358173): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Summer Lake 1 S Thresholds

Summer Lake 1 S: days with a maximum temperature at or above 30 C (86 F) in 67 years, most in 2017 with 89.
Summer Lake 1 S: days with a maximum temperature at or above 90 F (32.2 C) in 67 years, most in 2021 with 65.
Summer Lake 1 S: nights with a minimum temperature at or below 0 C (32 F) in 67 years, most in 2013 with 186.
Summer Lake 1 S: nights with a minimum temperature at or below -10 C (14 F) in 67 years, most in 2013 with 42.
16 fixed thresholds have at least one qualifying day at Summer Lake 1 S.

Days at or above 30 C (86 F)

67 years with a qualifying day

Days per year at Summer Lake 1 S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 89 in 2017.

Days at or above 30 C (86 F) per year at Summer Lake 1 S
Year	Days	Decade average
1958	41	43.5
1959	46	43.5
1960	44	39.8
1961	54	39.8
1962	38	39.8
1963	29	39.8
1964	32	39.8
1965	22	39.8
1966	37	39.8
1967	63	39.8
1968	45	39.8
1969	34	39.8
1970	61	46.1
1971	45	46.1
1972	44	46.1
1973	54	46.1
1974	49	46.1
1975	47	46.1
1976	29	46.1
1977	52	46.1
1978	35	46.1
1979	45	46.1
1980	32	47.2
1981	53	47.2
1982	33	47.2
1983	33	47.2
1984	55	47.2
1986	59	47.2
1987	55	47.2
1988	61	47.2
1989	44	47.2
1990	66	56.3
1991	53	56.3
1992	60	56.3
1993	32	56.3
1994	75	56.3
1995	51	56.3
1996	62	56.3
1997	55	56.3
1998	52	56.3
1999	57	56.3
2000	65	67.3
2001	45	67.3
2002	68	67.3
2003	81	67.3
2004	63	67.3
2005	61	67.3
2006	71	67.3
2007	66	67.3
2008	77	67.3
2009	76	67.3
2010	62	70.6
2011	65	70.6
2012	78	70.6
2013	71	70.6
2014	66	70.6
2015	77	70.6
2016	64	70.6
2017	89	70.6
2018	68	70.6
2019	66	70.6
2020	71	74.5
2021	85	74.5
2022	87	74.5
2023	66	74.5
2024	77	74.5
2026	61	74.5

For each year, a bar from the first to the last day at Summer Lake 1 S meeting 30 C (86 F).

First to last qualifying date each year at Summer Lake 1 S
Year	First date	Last date
1958	1958-06-21	1958-10-04
1959	1959-06-11	1959-09-12
1960	1960-06-02	1960-09-26
1961	1961-06-14	1961-08-24
1962	1962-06-23	1962-09-24
1963	1963-06-14	1963-10-02
1964	1964-06-23	1964-08-25
1965	1965-06-10	1965-10-08
1966	1966-05-25	1966-09-21
1967	1967-05-21	1967-09-28
1968	1968-06-16	1968-09-07
1969	1969-06-02	1969-09-12
1970	1970-06-01	1970-10-03
1971	1971-07-14	1971-09-12
1972	1972-05-28	1972-09-03
1973	1973-05-13	1973-09-12
1974	1974-06-11	1974-09-25
1975	1975-05-31	1975-09-16
1976	1976-05-13	1976-09-10
1977	1977-06-05	1977-09-10
1978	1978-06-05	1978-09-25
1979	1979-06-03	1979-10-06
1980	1980-07-15	1980-10-07
1981	1981-06-24	1981-09-18
1982	1982-06-16	1982-09-08
1983	1983-05-24	1983-09-15
1984	1984-05-28	1984-09-18
1986	1986-05-25	1986-09-07
1987	1987-04-27	1987-10-02
1988	1988-06-14	1988-10-02
1989	1989-06-11	1989-09-24
1990	1990-05-05	1990-10-01
1991	1991-06-10	1991-10-11
1992	1992-05-04	1992-09-30
1993	1993-06-18	1993-09-30
1994	1994-05-10	1994-09-28
1995	1995-06-24	1995-09-19
1996	1996-06-02	1996-10-09
1997	1997-05-11	1997-09-24
1998	1998-07-06	1998-09-16
1999	1999-05-22	1999-09-23
2000	2000-05-21	2000-09-18
2001	2001-05-11	2001-10-02
2002	2002-06-12	2002-09-24
2003	2003-05-22	2003-09-28
2004	2004-06-04	2004-09-25
2005	2005-06-24	2005-09-20
2006	2006-05-15	2006-09-30
2007	2007-05-30	2007-09-12
2008	2008-05-15	2008-09-30
2009	2009-05-17	2009-09-27
2010	2010-06-26	2010-10-03
2011	2011-06-21	2011-09-30
2012	2012-05-13	2012-09-22
2013	2013-06-05	2013-09-15
2014	2014-06-04	2014-10-07
2015	2015-06-06	2015-10-15
2016	2016-06-01	2016-09-28
2017	2017-05-23	2017-09-13
2018	2018-06-03	2018-09-28
2019	2019-06-10	2019-09-14
2020	2020-05-27	2020-10-07
2021	2021-05-29	2021-09-25
2022	2022-05-15	2022-10-12
2023	2023-05-18	2023-10-19
2024	2024-05-16	2024-10-07
2026	2026-05-06	2026-08-31

Every Fixed Threshold

Fixed thresholds at Summer Lake 1 S
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	67	89	2017	61
35 C (95 F): Days	64	47	2022	17
40 C (104 F): Days	8	5	2024	5
90 F (32.2 C): Days	67	65	2021	47
100 F (37.8 C): Days	35	16	2024	2
0 C (32 F): Ice days (max	64	23	1993	5
0 C (32 F): Frost days (min	67	186	2013	59
-10 C (14 F): Days with min	67	42	2013	2
-20 C (-4 F): Days with min	20	6	1989	2
-30 C (-22 F): Days with min	1	1	1962	1
20 C (68 F): Tropical nights (min	7	3	2024	3
10 mm (0.39 in): Days with 10 mm or more rain	65	14	1964	4
25 mm (0.98 in): Days with 25 mm or more rain	40	4	1964	1
50 mm (1.97 in): Days with 50 mm or more rain	6	2	1964	1
10 cm (3.9 in): Days with 10 cm or more snowfall	35	4	1964	3
25 cm (9.8 in): Days with 25 cm or more snowfall	7	1	1961	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

Data for Summer Lake 1 S 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).

Summer Lake 1 S Threshold Days by Year (USC00358173)

Key Facts for Summer Lake 1 S Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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