John Glenn Intl AP Threshold Days by Year

18 fixed thresholds counted per year at John Glenn Intl AP (USW00014821): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for John Glenn Intl AP Thresholds

John Glenn Intl AP: days with a maximum temperature at or above 30 C (86 F) in 79 years, most in 1991 with 88.
John Glenn Intl AP: days with a maximum temperature at or above 90 F (32.2 C) in 79 years, most in 1955 with 49.
John Glenn Intl AP: days with a maximum temperature at or below 0 C (32 F) in 79 years, most in 1978 with 60.
John Glenn Intl AP: nights with a minimum temperature at or below 0 C (32 F) in 79 years, most in 1976 with 144.
18 fixed thresholds have at least one qualifying day at John Glenn Intl AP.

Days at or above 30 C (86 F)

79 years with a qualifying day

Days per year at John Glenn Intl AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 88 in 1991.

Days at or above 30 C (86 F) per year at John Glenn Intl AP
Year	Days	Decade average
1948	57	61
1949	65	61
1950	24	56
1951	49	56
1952	70	56
1953	68	56
1954	51	56
1955	70	56
1956	49	56
1957	54	56
1958	42	56
1959	83	56
1960	45	41.9
1961	47	41.9
1962	43	41.9
1963	43	41.9
1964	55	41.9
1965	40	41.9
1966	48	41.9
1967	30	41.9
1968	39	41.9
1969	29	41.9
1970	40	33.3
1971	30	33.3
1972	15	33.3
1973	37	33.3
1974	31	33.3
1975	55	33.3
1976	19	33.3
1977	43	33.3
1978	41	33.3
1979	22	33.3
1980	45	40.1
1981	12	40.1
1982	28	40.1
1983	60	40.1
1984	37	40.1
1985	31	40.1
1986	45	40.1
1987	57	40.1
1988	60	40.1
1989	26	40.1
1990	40	49.3
1991	88	49.3
1992	15	49.3
1993	53	49.3
1994	53	49.3
1995	58	49.3
1996	37	49.3
1997	28	49.3
1998	57	49.3
1999	64	49.3
2000	21	42.1
2001	40	42.1
2002	67	42.1
2003	22	42.1
2004	27	42.1
2005	56	42.1
2006	39	42.1
2007	76	42.1
2008	46	42.1
2009	27	42.1
2010	63	56.4
2011	57	56.4
2012	73	56.4
2013	46	56.4
2014	48	56.4
2015	41	56.4
2016	67	56.4
2017	45	56.4
2018	62	56.4
2019	62	56.4
2020	60	56.6
2021	64	56.6
2022	46	56.6
2023	39	56.6
2024	77	56.6
2025	61	56.6
2026	49	56.6

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

First to last qualifying date each year at John Glenn Intl AP
Year	First date	Last date
1948	1948-04-25	1948-09-19
1949	1949-05-04	1949-10-10
1950	1950-05-05	1950-09-01
1951	1951-05-01	1951-10-05
1952	1952-05-05	1952-10-01
1953	1953-05-25	1953-10-03
1954	1954-05-31	1954-09-29
1955	1955-05-03	1955-09-19
1956	1956-05-12	1956-09-13
1957	1957-04-24	1957-09-11
1958	1958-05-18	1958-09-24
1959	1959-05-02	1959-10-05
1960	1960-04-23	1960-09-23
1961	1961-06-01	1961-09-24
1962	1962-05-13	1962-09-13
1963	1963-05-09	1963-10-07
1964	1964-05-19	1964-09-17
1965	1965-05-06	1965-09-22
1966	1966-06-04	1966-09-03
1967	1967-05-27	1967-09-16
1968	1968-06-06	1968-09-23
1969	1969-05-28	1969-09-06
1970	1970-04-30	1970-09-24
1971	1971-06-03	1971-09-29
1972	1972-06-19	1972-09-17
1973	1973-06-03	1973-09-27
1974	1974-05-14	1974-08-27
1975	1975-05-19	1975-09-05
1976	1976-06-08	1976-08-23
1977	1977-05-17	1977-09-05
1978	1978-05-27	1978-09-21
1979	1979-05-08	1979-09-04
1980	1980-05-05	1980-09-21
1981	1981-06-14	1981-08-04
1982	1982-05-06	1982-09-13
1983	1983-06-12	1983-09-19
1984	1984-05-19	1984-09-22
1985	1985-04-21	1985-09-23
1986	1986-04-26	1986-09-30
1987	1987-04-21	1987-09-10
1988	1988-05-15	1988-08-18
1989	1989-06-01	1989-09-09
1990	1990-04-25	1990-09-06
1991	1991-05-12	1991-09-16
1992	1992-05-22	1992-08-27
1993	1993-05-09	1993-09-14
1994	1994-04-26	1994-09-16
1995	1995-05-24	1995-09-06
1996	1996-05-18	1996-09-05
1997	1997-06-20	1997-10-05
1998	1998-05-14	1998-09-27
1999	1999-05-12	1999-09-28
2000	2000-05-12	2000-09-02
2001	2001-05-03	2001-09-09
2002	2002-05-31	2002-10-03
2003	2003-06-23	2003-08-29
2004	2004-05-10	2004-09-06
2005	2005-05-11	2005-09-22
2006	2006-05-28	2006-08-26
2007	2007-05-01	2007-10-08
2008	2008-05-31	2008-09-14
2009	2009-04-24	2009-08-26
2010	2010-05-26	2010-10-10
2011	2011-05-12	2011-09-03
2012	2012-05-02	2012-09-13
2013	2013-04-18	2013-09-20
2014	2014-05-07	2014-10-02
2015	2015-05-07	2015-09-08
2016	2016-05-27	2016-09-23
2017	2017-05-16	2017-10-04
2018	2018-05-12	2018-10-09
2019	2019-05-18	2019-10-03
2020	2020-05-24	2020-09-12
2021	2021-05-20	2021-10-14
2022	2022-05-20	2022-09-21
2023	2023-05-29	2023-10-04
2024	2024-05-02	2024-10-06
2025	2025-06-04	2025-09-29
2026	2026-03-22	2026-10-01

Every Fixed Threshold

Fixed thresholds at John Glenn Intl AP
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	79	88	1991	49
35 C (95 F): Days	46	16	1955	6
40 C (104 F): Days	1	1	1954	1
90 F (32.2 C): Days	79	49	1955	25
100 F (37.8 C): Days	9	6	1988	4
0 C (32 F): Ice days (max	79	60	1978	27
0 C (32 F): Frost days (min	79	144	1976	66
-10 C (14 F): Days with min	79	50	1978	20
-20 C (-4 F): Days with min	38	13	1977	3
-30 C (-22 F): Days with min	1	1	1994	1
20 C (68 F): Tropical nights (min	79	65	2018	50
25 C (77 F): Days with min	6	3	1999	1
10 mm (0.39 in): Days with 10 mm or more rain	79	53	2011	42
25 mm (0.98 in): Days with 25 mm or more rain	79	15	2018	12
50 mm (1.97 in): Days with 50 mm or more rain	55	4	1964	3
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1959	1
10 cm (3.9 in): Days with 10 cm or more snowfall	56	4	1978	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1987	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

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Data for John Glenn Intl AP 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

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

John Glenn Intl AP Threshold Days by Year

Key Facts for John Glenn Intl AP Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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