Chester Threshold Days by Year (USC00111491)

16 fixed thresholds counted per year at Chester (USC00111491): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chester Thresholds

Chester: days with 10 mm (0.39 in) or more of precipitation in 79 years, most in 1951 with 52.
Chester: days with 25 mm (0.98 in) or more of precipitation in 79 years, most in 1990 with 22.
Chester: days with 50 mm (1.97 in) or more of precipitation in 71 years, most in 1982 with 8.
Chester: days with 10 cm (3.9 in) or more of snowfall in 44 years, most in 1960 with 4.
16 fixed thresholds have at least one qualifying day at Chester.

Days with 10 mm (0.39 in) or more of precipitation

79 years with a qualifying day

Days per year at Chester with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 52 in 1951.

Days with 10 mm (0.39 in) or more of precipitation per year at Chester
Year	Days	Decade average
1907	41	41
1908	41	41
1950	34	34.8
1951	52	34.8
1952	34	34.8
1953	23	34.8
1954	34	34.8
1955	27	34.8
1956	37	34.8
1957	33	34.8
1958	37	34.8
1959	37	34.8
1960	29	30.9
1961	43	30.9
1962	29	30.9
1963	22	30.9
1964	29	30.9
1965	28	30.9
1966	24	30.9
1967	35	30.9
1968	35	30.9
1969	35	30.9
1970	29	34.7
1971	30	34.7
1972	37	34.7
1973	45	34.7
1974	35	34.7
1975	43	34.7
1976	28	34.7
1977	32	34.7
1978	31	34.7
1979	37	34.7
1980	26	36.3
1981	34	36.3
1982	43	36.3
1983	42	36.3
1984	39	36.3
1985	44	36.3
1986	36	36.3
1987	36	36.3
1988	32	36.3
1989	31	36.3
1990	47	38.2
1991	35	38.2
1992	33	38.2
1993	43	38.2
1994	36	38.2
1995	35	38.2
1996	39	38.2
1997	39	38.2
1998	41	38.2
1999	34	38.2
2000	31	35.7
2001	37	35.7
2002	37	35.7
2003	26	35.7
2004	38	35.7
2005	31	35.7
2006	32	35.7
2007	38	35.7
2008	42	35.7
2009	45	35.7
2010	30	36
2011	47	36
2012	22	36
2013	37	36
2014	32	36
2015	44	36
2016	30	36
2017	30	36
2018	45	36
2019	43	36
2020	38	33.3
2021	35	33.3
2022	35	33.3
2023	31	33.3
2024	35	33.3
2025	35	33.3
2026	24	33.3

For each year, a bar from the first to the last day at Chester meeting 10 mm (0.39 in).

First to last qualifying date each year at Chester
Year	First date	Last date
1907	1907-01-02	1907-12-23
1908	1908-01-11	1908-11-30
1950	1950-01-31	1950-12-03
1951	1951-01-03	1951-12-09
1952	1952-01-04	1952-12-20
1953	1953-01-08	1953-11-22
1954	1954-01-20	1954-12-29
1955	1955-01-11	1955-11-16
1956	1956-01-30	1956-12-20
1957	1957-02-06	1957-12-20
1958	1958-01-21	1958-12-05
1959	1959-01-01	1959-12-27
1960	1960-01-15	1960-12-12
1961	1961-01-15	1961-12-17
1962	1962-01-06	1962-12-29
1963	1963-03-01	1963-12-08
1964	1964-01-09	1964-12-25
1965	1965-01-02	1965-12-25
1966	1966-01-01	1966-12-28
1967	1967-01-27	1967-12-22
1968	1968-01-28	1968-12-28
1969	1969-01-18	1969-12-31
1970	1970-02-02	1970-12-21
1971	1971-01-04	1971-12-30
1972	1972-01-04	1972-12-31
1973	1973-01-04	1973-12-27
1974	1974-01-10	1974-11-24
1975	1975-01-03	1975-12-30
1976	1976-01-25	1976-12-07
1977	1977-01-10	1977-12-14
1978	1978-01-16	1978-12-31
1979	1979-01-01	1979-12-25
1980	1980-01-11	1980-12-09
1981	1981-01-21	1981-12-23
1982	1982-01-03	1982-12-25
1983	1983-01-21	1983-12-22
1984	1984-01-23	1984-12-30
1985	1985-01-01	1985-12-11
1986	1986-02-03	1986-12-09
1987	1987-01-10	1987-12-28
1988	1988-01-17	1988-12-28
1989	1989-01-06	1989-12-08
1990	1990-01-20	1990-12-30
1991	1991-01-06	1991-12-21
1992	1992-01-08	1992-12-16
1993	1993-01-01	1993-12-04
1994	1994-01-17	1994-12-09
1995	1995-01-06	1995-12-19
1996	1996-01-02	1996-12-15
1997	1997-01-09	1997-12-23
1998	1998-01-05	1998-12-22
1999	1999-01-02	1999-12-12
2000	2000-01-03	2000-12-14
2001	2001-01-30	2001-12-17
2002	2002-01-24	2002-12-31
2003	2003-02-14	2003-12-29
2004	2004-01-05	2004-12-07
2005	2005-01-05	2005-11-28
2006	2006-01-10	2006-12-31
2007	2007-01-05	2007-12-23
2008	2008-01-09	2008-12-28
2009	2009-01-10	2009-12-25
2010	2010-01-22	2010-11-30
2011	2011-01-01	2011-12-27
2012	2012-01-11	2012-12-20
2013	2013-01-13	2013-12-22
2014	2014-01-06	2014-12-06
2015	2015-01-03	2015-12-29
2016	2016-02-24	2016-11-29
2017	2017-01-14	2017-12-23
2018	2018-01-22	2018-12-31
2019	2019-01-05	2019-11-30
2020	2020-01-10	2020-12-30
2021	2021-01-01	2021-12-18
2022	2022-01-01	2022-12-15
2023	2023-01-03	2023-12-25
2024	2024-01-09	2024-12-29
2025	2025-01-05	2025-12-19
2026	2026-01-09	2026-08-19

Every Fixed Threshold

Fixed thresholds at Chester
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	2	101	1908	101
35 C (95 F): Days	2	22	1907	20
90 F (32.2 C): Days	2	66	1908	66
100 F (37.8 C): Days	2	5	1907	3
0 C (32 F): Ice days (max	2	6	1907	3
0 C (32 F): Frost days (min	2	66	1907	55
-10 C (14 F): Days with min	2	7	1907	3
20 C (68 F): Tropical nights (min	2	86	1908	86
25 C (77 F): Days with min	2	3	1908	3
10 mm (0.39 in): Days with 10 mm or more rain	79	52	1951	24
25 mm (0.98 in): Days with 25 mm or more rain	79	22	1990	9
50 mm (1.97 in): Days with 50 mm or more rain	71	8	1982	2
100 mm (3.94 in): Days with 100 mm or more rain	9	1	1977	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1986	1
10 cm (3.9 in): Days with 10 cm or more snowfall	44	4	1960	1
25 cm (9.8 in): Days with 25 cm or more snowfall	4	1	1908	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

Download the Data

Data for Chester 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).

Chester Threshold Days by Year (USC00111491)

Key Facts for Chester Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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