Keiser Threshold Days by Year

17 fixed thresholds counted per year at Keiser (USC00033821): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Keiser Thresholds

Keiser: days with 10 mm (0.39 in) or more of precipitation in 67 years, most in 2018 with 56.
Keiser: days with 25 mm (0.98 in) or more of precipitation in 67 years, most in 2019 with 31.
Keiser: days with a maximum temperature at or above 30 C (86 F) in 66 years, most in 2007 with 134.
Keiser: days with a maximum temperature at or above 35 C (95 F) in 66 years, most in 1980 with 59.
17 fixed thresholds have at least one qualifying day at Keiser.

Days at or above 30 C (86 F)

66 years with a qualifying day

Days per year at Keiser with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 134 in 2007.

Days at or above 30 C (86 F) per year at Keiser
Year	Days	Decade average
1960	99	96.4
1961	88	96.4
1962	103	96.4
1963	124	96.4
1964	105	96.4
1965	105	96.4
1966	79	96.4
1967	69	96.4
1968	88	96.4
1969	104	96.4
1970	101	92
1971	98	92
1972	100	92
1973	93	92
1974	68	92
1975	95	92
1976	71	92
1977	116	92
1978	101	92
1979	77	92
1980	112	96.9
1981	74	96.9
1982	87	96.9
1983	101	96.9
1984	87	96.9
1985	90	96.9
1986	110	96.9
1987	126	96.9
1988	102	96.9
1989	80	96.9
1990	92	96.9
1991	105	96.9
1992	73	96.9
1993	98	96.9
1994	93	96.9
1995	97	96.9
1996	91	96.9
1997	88	96.9
1998	127	96.9
1999	105	96.9
2000	99	104.8
2001	109	104.8
2002	113	104.8
2003	83	104.8
2004	87	104.8
2005	125	104.8
2006	116	104.8
2007	134	104.8
2008	100	104.8
2009	82	104.8
2010	134	111.9
2011	116	111.9
2012	113	111.9
2013	93	111.9
2014	99	111.9
2015	101	111.9
2016	120	111.9
2017	101	111.9
2018	124	111.9
2019	118	111.9
2020	91	94.7
2022	93	94.7
2023	90	94.7
2024	89	94.7
2025	115	94.7
2026	90	94.7

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

First to last qualifying date each year at Keiser
Year	First date	Last date
1960	1960-04-16	1960-10-03
1961	1961-05-29	1961-09-30
1962	1962-05-07	1962-10-12
1963	1963-04-20	1963-10-27
1964	1964-05-17	1964-09-23
1965	1965-04-21	1965-10-18
1966	1966-05-08	1966-10-10
1967	1967-04-06	1967-10-07
1968	1968-04-19	1968-09-24
1969	1969-05-06	1969-10-21
1970	1970-05-01	1970-09-24
1971	1971-04-18	1971-10-30
1972	1972-04-14	1972-09-21
1973	1973-05-11	1973-10-05
1974	1974-05-14	1974-09-13
1975	1975-05-19	1975-10-15
1976	1976-04-24	1976-10-05
1977	1977-04-15	1977-10-02
1978	1978-04-09	1978-10-13
1979	1979-05-09	1979-10-22
1980	1980-04-23	1980-10-11
1981	1981-05-01	1981-10-06
1982	1982-05-13	1982-10-06
1983	1983-06-06	1983-10-04
1984	1984-04-28	1984-09-15
1985	1985-05-13	1985-10-14
1986	1986-05-01	1986-10-05
1987	1987-05-01	1987-09-29
1988	1988-04-24	1988-09-24
1989	1989-04-23	1989-10-14
1990	1990-05-16	1990-10-04
1991	1991-05-14	1991-10-04
1992	1992-04-15	1992-09-17
1993	1993-05-07	1993-09-24
1994	1994-04-22	1994-10-04
1995	1995-04-09	1995-10-01
1996	1996-04-20	1996-09-24
1997	1997-05-18	1997-10-09
1998	1998-05-13	1998-10-17
1999	1999-05-10	1999-10-14
2000	2000-04-20	2000-10-26
2001	2001-04-08	2001-09-24
2002	2002-04-16	2002-10-05
2003	2003-04-15	2003-09-27
2004	2004-05-06	2004-10-27
2005	2005-04-22	2005-10-20
2006	2006-04-14	2006-10-19
2007	2007-03-30	2007-10-09
2008	2008-05-20	2008-10-07
2009	2009-04-24	2009-10-09
2010	2010-04-15	2010-10-19
2011	2011-04-10	2011-10-17
2012	2012-04-01	2012-09-28
2013	2013-04-17	2013-10-06
2014	2014-05-05	2014-10-27
2015	2015-05-05	2015-10-16
2016	2016-05-08	2016-11-02
2017	2017-04-14	2017-10-15
2018	2018-05-03	2018-10-10
2019	2019-05-01	2019-10-11
2020	2020-04-09	2020-10-08
2022	2022-05-10	2022-09-26
2023	2023-05-07	2023-10-22
2024	2024-05-02	2024-10-29
2025	2025-04-03	2025-10-19
2026	2026-03-23	2026-08-31

Every Fixed Threshold

Fixed thresholds at Keiser
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	66	134	2007	90
35 C (95 F): Days	66	59	1980	19
40 C (104 F): Days	6	6	1980	1
90 F (32.2 C): Days	66	102	2010	56
100 F (37.8 C): Days	33	24	1980	1
0 C (32 F): Ice days (max	65	31	1978	8
0 C (32 F): Frost days (min	65	96	1960	39
-10 C (14 F): Days with min	56	24	1963	10
-20 C (-4 F): Days with min	6	3	1989	3
20 C (68 F): Tropical nights (min	65	129	2018	90
25 C (77 F): Days with min	46	44	2010	9
10 mm (0.39 in): Days with 10 mm or more rain	67	56	2018	17
25 mm (0.98 in): Days with 25 mm or more rain	67	31	2019	11
50 mm (1.97 in): Days with 50 mm or more rain	66	10	2019	5
100 mm (3.94 in): Days with 100 mm or more rain	14	2	1978	1
10 cm (3.9 in): Days with 10 cm or more snowfall	10	2	1965	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1982	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.

Download the Data

Data for Keiser 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 2026-10-13 (13 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-14. Last revised 14 October 2026 (2026-10-14).

Keiser Threshold Days by Year

Key Facts for Keiser Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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