Jerseyville 2 SW Threshold Days by Year (USC00114489)

19 fixed thresholds counted per year at Jerseyville 2 SW (USC00114489): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Jerseyville 2 SW Thresholds

Jerseyville 2 SW: days with a maximum temperature at or above 30 C (86 F) in 75 years, most in 1953 with 107.
Jerseyville 2 SW: days with a maximum temperature at or above 90 F (32.2 C) in 75 years, most in 1953 with 83.
Jerseyville 2 SW: days with a maximum temperature at or below 0 C (32 F) in 75 years, most in 1978 with 58.
Jerseyville 2 SW: days with 10 mm (0.39 in) or more of precipitation in 75 years, most in 1993 with 48.
19 fixed thresholds have at least one qualifying day at Jerseyville 2 SW.

Days at or above 30 C (86 F)

75 years with a qualifying day

Days per year at Jerseyville 2 SW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 107 in 1953.

Days at or above 30 C (86 F) per year at Jerseyville 2 SW
Year	Days	Decade average
1941	91	86.3
1943	88	86.3
1944	80	86.3
1950	64	84.3
1951	66	84.3
1952	99	84.3
1953	107	84.3
1954	99	84.3
1955	86	84.3
1956	89	84.3
1957	63	84.3
1958	75	84.3
1959	95	84.3
1960	71	64.4
1961	68	64.4
1962	77	64.4
1963	88	64.4
1964	73	64.4
1965	58	64.4
1966	52	64.4
1967	38	64.4
1968	59	64.4
1969	60	64.4
1970	68	61.8
1971	72	61.8
1972	71	61.8
1973	67	61.8
1974	47	61.8
1975	59	61.8
1976	54	61.8
1977	54	61.8
1978	64	61.8
1980	76	64.5
1981	40	64.5
1982	33	64.5
1983	84	64.5
1984	67	64.5
1985	48	64.5
1986	72	64.5
1987	85	64.5
1988	84	64.5
1989	56	64.5
1990	55	58.6
1991	75	58.6
1992	40	58.6
1993	58	58.6
1994	55	58.6
1995	64	58.6
1996	53	58.6
1997	58	58.6
1998	70	58.6
1999	58	58.6
2000	56	63.8
2002	80	63.8
2003	46	63.8
2005	79	63.8
2007	85	63.8
2008	37	63.8
2010	75	61.6
2011	71	61.6
2012	64	61.6
2013	51	61.6
2014	38	61.6
2015	47	61.6
2016	67	61.6
2017	66	61.6
2018	83	61.6
2019	54	61.6
2020	60	66.9
2021	63	66.9
2022	56	66.9
2023	55	66.9
2024	69	66.9
2025	75	66.9
2026	90	66.9

For each year, a bar from the first to the last day at Jerseyville 2 SW meeting 30 C (86 F).

First to last qualifying date each year at Jerseyville 2 SW
Year	First date	Last date
1941	1941-04-12	1941-10-06
1943	1943-05-05	1943-09-06
1944	1944-05-12	1944-10-06
1950	1950-04-23	1950-10-31
1951	1951-04-28	1951-10-05
1952	1952-04-29	1952-10-01
1953	1953-04-22	1953-10-19
1954	1954-04-05	1954-10-10
1955	1955-05-03	1955-09-29
1956	1956-04-27	1956-10-12
1957	1957-06-06	1957-10-01
1958	1958-05-11	1958-09-25
1959	1959-04-30	1959-09-24
1960	1960-04-23	1960-09-23
1961	1961-05-31	1961-09-23
1962	1962-05-10	1962-10-12
1963	1963-04-17	1963-10-20
1964	1964-05-16	1964-09-20
1965	1965-04-21	1965-09-19
1966	1966-06-12	1966-09-03
1967	1967-05-24	1967-10-04
1968	1968-05-01	1968-09-03
1969	1969-05-28	1969-10-04
1970	1970-04-28	1970-09-22
1971	1971-04-12	1971-10-02
1972	1972-05-19	1972-09-21
1973	1973-06-09	1973-09-03
1974	1974-05-20	1974-08-27
1975	1975-05-20	1975-10-14
1976	1976-06-10	1976-10-04
1977	1977-04-17	1977-09-08
1978	1978-05-25	1978-09-21
1980	1980-04-23	1980-10-09
1981	1981-06-05	1981-10-06
1982	1982-05-06	1982-09-13
1983	1983-06-14	1983-10-03
1984	1984-06-06	1984-09-25
1985	1985-03-29	1985-09-21
1986	1986-04-26	1986-09-29
1987	1987-04-21	1987-09-19
1988	1988-04-06	1988-09-23
1989	1989-04-25	1989-10-14
1990	1990-04-25	1990-09-28
1991	1991-05-15	1991-09-16
1992	1992-06-15	1992-10-15
1993	1993-06-01	1993-09-13
1994	1994-06-07	1994-10-02
1995	1995-06-08	1995-09-07
1996	1996-05-10	1996-09-07
1997	1997-05-18	1997-10-08
1998	1998-05-15	1998-09-28
1999	1999-06-05	1999-09-27
2000	2000-05-09	2000-10-04
2002	2002-04-16	2002-10-03
2003	2003-04-15	2003-10-21
2005	2005-05-11	2005-10-05
2007	2007-05-01	2007-10-21
2008	2008-05-31	2008-09-14
2010	2010-05-24	2010-09-24
2011	2011-04-04	2011-09-14
2012	2012-04-02	2012-09-14
2013	2013-05-15	2013-10-04
2014	2014-05-09	2014-09-05
2015	2015-05-07	2015-09-19
2016	2016-05-31	2016-10-18
2017	2017-05-16	2017-10-15
2018	2018-05-02	2018-10-09
2019	2019-05-17	2019-10-03
2020	2020-04-09	2020-09-08
2021	2021-05-24	2021-10-11
2022	2022-05-11	2022-09-22
2023	2023-05-08	2023-10-04
2024	2024-05-20	2024-10-13
2025	2025-04-29	2025-10-07
2026	2026-03-21	2026-10-13

Every Fixed Threshold

Fixed thresholds at Jerseyville 2 SW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	75	107	1953	90
35 C (95 F): Days	66	55	1954	18
40 C (104 F): Days	6	8	1954	1
90 F (32.2 C): Days	75	83	1953	54
100 F (37.8 C): Days	26	19	1954	6
110 F (43.3 C): Days	1	4	1954	4
0 C (32 F): Ice days (max	75	58	1978	18
0 C (32 F): Frost days (min	74	138	2013	62
-10 C (14 F): Days with min	74	53	1978	22
-20 C (-4 F): Days with min	51	18	1977	5
-30 C (-22 F): Days with min	1	1	1977	1
20 C (68 F): Tropical nights (min	74	59	1943	56
25 C (77 F): Days with min	23	3	2012	3
10 mm (0.39 in): Days with 10 mm or more rain	75	48	1993	18
25 mm (0.98 in): Days with 25 mm or more rain	75	24	2008	6
50 mm (1.97 in): Days with 50 mm or more rain	64	5	1941	2
100 mm (3.94 in): Days with 100 mm or more rain	7	1	1961	1
10 cm (3.9 in): Days with 10 cm or more snowfall	48	4	1993	1
25 cm (9.8 in): Days with 25 cm or more snowfall	6	1	1944	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1941.

Download the Data

Data for Jerseyville 2 SW 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).

Jerseyville 2 SW Threshold Days by Year (USC00114489)

Key Facts for Jerseyville 2 SW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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