Upton Threshold Days by Year (USC00489205)

19 fixed thresholds counted per year at Upton (USC00489205): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Upton Thresholds

Upton: days with 10 mm (0.39 in) or more of precipitation in 77 years, most in 1927 with 24.
Upton: days with a maximum temperature at or above 30 C (86 F) in 72 years, most in 2021 with 77.
Upton: days with a maximum temperature at or above 90 F (32.2 C) in 72 years, most in 2021 with 54.
Upton: days with a maximum temperature at or below 0 C (32 F) in 72 years, most in 1955 with 80.
19 fixed thresholds have at least one qualifying day at Upton.

Days at or above 30 C (86 F)

72 years with a qualifying day

Days per year at Upton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 77 in 2021.

Days at or above 30 C (86 F) per year at Upton
Year	Days	Decade average
1914	46	30
1915	14	30
1927	25	25
1953	61	58.3
1954	64	58.3
1955	65	58.3
1956	51	58.3
1957	42	58.3
1958	51	58.3
1959	74	58.3
1960	54	43.5
1961	59	43.5
1962	27	43.5
1963	60	43.5
1964	50	43.5
1965	19	43.5
1966	54	43.5
1967	33	43.5
1968	37	43.5
1969	42	43.5
1970	63	45.2
1971	50	45.2
1972	33	45.2
1973	39	45.2
1974	47	45.2
1975	43	45.2
1976	43	45.2
1977	46	45.2
1979	43	45.2
1980	58	53
1981	45	53
1982	43	53
1983	65	53
1984	59	53
1985	58	53
1986	38	53
1987	43	53
1988	67	53
1989	54	53
1990	52	42.1
1993	13	42.1
1994	59	42.1
1995	44	42.1
1996	38	42.1
1997	40	42.1
1998	49	42.1
1999	42	42.1
2000	64	55.1
2001	67	55.1
2002	65	55.1
2003	61	55.1
2004	39	55.1
2005	56	55.1
2006	57	55.1
2007	63	55.1
2008	39	55.1
2009	40	55.1
2010	49	50.3
2011	58	50.3
2012	45	50.3
2013	58	50.3
2014	42	50.3
2015	46	50.3
2016	62	50.3
2017	55	50.3
2019	38	50.3
2020	66	61.8
2021	77	61.8
2022	66	61.8
2023	43	61.8
2024	71	61.8
2026	48	61.8

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

First to last qualifying date each year at Upton
Year	First date	Last date
1914	1914-06-02	1914-10-18
1915	1915-07-11	1915-10-16
1927	1927-04-28	1927-09-11
1953	1953-06-10	1953-10-01
1954	1954-05-20	1954-10-08
1955	1955-05-13	1955-09-16
1956	1956-06-04	1956-09-27
1957	1957-06-05	1957-09-29
1958	1958-05-20	1958-09-23
1959	1959-06-05	1959-09-14
1960	1960-05-12	1960-09-20
1961	1961-06-08	1961-08-31
1962	1962-06-27	1962-09-11
1963	1963-06-19	1963-10-05
1964	1964-05-17	1964-09-17
1965	1965-07-04	1965-08-28
1966	1966-05-04	1966-09-23
1967	1967-07-05	1967-09-02
1968	1968-06-03	1968-09-14
1969	1969-05-26	1969-09-03
1970	1970-06-07	1970-09-19
1971	1971-06-17	1971-09-13
1972	1972-05-17	1972-09-18
1973	1973-06-09	1973-08-31
1974	1974-06-03	1974-09-26
1975	1975-06-24	1975-10-06
1976	1976-05-14	1976-09-17
1977	1977-06-01	1977-09-07
1979	1979-05-16	1979-09-19
1980	1980-04-21	1980-09-30
1981	1981-06-06	1981-09-28
1982	1982-06-22	1982-09-10
1983	1983-06-10	1983-09-26
1984	1984-05-23	1984-09-19
1985	1985-05-03	1985-09-16
1986	1986-05-31	1986-08-29
1987	1987-05-15	1987-09-26
1988	1988-05-13	1988-09-06
1989	1989-04-22	1989-09-30
1990	1990-06-04	1990-09-25
1993	1993-07-29	1993-09-11
1994	1994-06-06	1994-09-28
1995	1995-06-13	1995-09-05
1996	1996-06-09	1996-09-05
1997	1997-06-22	1997-10-01
1998	1998-07-02	1998-09-18
1999	1999-06-20	1999-09-06
2000	2000-05-05	2000-09-17
2001	2001-05-13	2001-09-28
2002	2002-05-30	2002-09-16
2003	2003-05-28	2003-09-07
2004	2004-06-04	2004-09-18
2005	2005-06-18	2005-10-01
2006	2006-05-22	2006-09-14
2007	2007-05-27	2007-09-22
2008	2008-06-24	2008-08-31
2009	2009-05-18	2009-09-16
2010	2010-05-27	2010-10-04
2011	2011-06-05	2011-10-04
2012	2012-05-16	2012-09-14
2013	2013-05-13	2013-09-22
2014	2014-05-28	2014-09-26
2015	2015-06-09	2015-09-24
2016	2016-05-05	2016-09-20
2017	2017-06-01	2017-09-13
2019	2019-06-27	2019-09-19
2020	2020-05-19	2020-09-24
2021	2021-06-03	2021-09-27
2022	2022-06-17	2022-09-29
2023	2023-06-19	2023-09-18
2024	2024-06-12	2024-09-29
2026	2026-03-21	2026-08-17

Every Fixed Threshold

Fixed thresholds at Upton
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	72	77	2021	48
35 C (95 F): Days	71	28	2021	28
40 C (104 F): Days	10	4	1954	4
90 F (32.2 C): Days	72	54	2021	37
100 F (37.8 C): Days	45	10	1954	12
110 F (43.3 C): Days	1	1	1954	1
0 C (32 F): Ice days (max	72	80	1955	13
0 C (32 F): Frost days (min	72	225	1974	104
-10 C (14 F): Days with min	72	116	1955	20
-20 C (-4 F): Days with min	72	38	1985	6
-30 C (-22 F): Days with min	50	10	1972	4
-40 C (-40 F): Days with min	4	2	1983	1
20 C (68 F): Tropical nights (min	41	8	2003	7
25 C (77 F): Days with min	1	1	2024	1
10 mm (0.39 in): Days with 10 mm or more rain	77	24	1927	3
25 mm (0.98 in): Days with 25 mm or more rain	61	6	1993	4
50 mm (1.97 in): Days with 50 mm or more rain	10	2	1976	1
10 cm (3.9 in): Days with 10 cm or more snowfall	61	12	1971	1
25 cm (9.8 in): Days with 25 cm or more snowfall	8	2	2013	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1914.

Download the Data

Data for Upton 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Upton Threshold Days by Year (USC00489205)

Key Facts for Upton Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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