Dillinger Threshold Days by Year (USC00482580)

17 fixed thresholds counted per year at Dillinger (USC00482580): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dillinger Thresholds

Dillinger: days with 10 mm (0.39 in) or more of precipitation in 78 years, most in 1998 with 20.
Dillinger: days with a maximum temperature at or above 30 C (86 F) in 77 years, most in 2021 with 79.
Dillinger: days with a maximum temperature at or above 35 C (95 F) in 77 years, most in 2007 with 36.
Dillinger: days with a maximum temperature at or above 90 F (32.2 C) in 77 years, most in 2020 with 60.
17 fixed thresholds have at least one qualifying day at Dillinger.

Days at or above 30 C (86 F)

77 years with a qualifying day

Days per year at Dillinger with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 79 in 2021.

Days at or above 30 C (86 F) per year at Dillinger
Year	Days	Decade average
1949	57	57
1950	36	49.6
1951	30	49.6
1952	62	49.6
1953	56	49.6
1954	63	49.6
1955	59	49.6
1956	41	49.6
1957	43	49.6
1958	37	49.6
1959	69	49.6
1960	58	49.9
1961	62	49.9
1962	31	49.9
1963	64	49.9
1964	50	49.9
1965	26	49.9
1966	63	49.9
1967	48	49.9
1968	43	49.9
1969	54	49.9
1970	47	49.3
1971	51	49.3
1972	40	49.3
1973	49	49.3
1974	57	49.3
1975	47	49.3
1976	59	49.3
1977	43	49.3
1978	51	49.3
1979	49	49.3
1980	62	57.6
1981	52	57.6
1982	45	57.6
1983	65	57.6
1984	58	57.6
1985	58	57.6
1986	51	57.6
1987	47	57.6
1988	76	57.6
1989	62	57.6
1990	57	46.2
1991	48	46.2
1992	37	46.2
1993	14	46.2
1994	61	46.2
1995	47	46.2
1996	53	46.2
1997	44	46.2
1998	55	46.2
1999	46	46.2
2000	69	56
2001	73	56
2002	33	56
2003	62	56
2004	39	56
2005	57	56
2006	66	56
2007	71	56
2008	45	56
2009	45	56
2010	52	55.7
2011	69	55.7
2013	60	55.7
2014	45	55.7
2015	58	55.7
2016	66	55.7
2017	62	55.7
2018	48	55.7
2019	41	55.7
2020	78	63.6
2021	79	63.6
2022	67	63.6
2023	39	63.6
2024	61	63.6
2025	60	63.6
2026	61	63.6

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

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

Every Fixed Threshold

Fixed thresholds at Dillinger
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	77	79	2021	61
35 C (95 F): Days	77	36	2007	25
40 C (104 F): Days	18	4	2006	2
90 F (32.2 C): Days	77	60	2020	43
100 F (37.8 C): Days	60	11	1954	7
0 C (32 F): Ice days (max	77	82	1978	12
0 C (32 F): Frost days (min	76	221	1978	106
-10 C (14 F): Days with min	76	122	1978	20
-20 C (-4 F): Days with min	75	46	1978	5
-30 C (-22 F): Days with min	59	12	1972	2
-40 C (-40 F): Days with min	5	3	1983	1
20 C (68 F): Tropical nights (min	36	5	2021	9
10 mm (0.39 in): Days with 10 mm or more rain	78	20	1998	2
25 mm (0.98 in): Days with 25 mm or more rain	62	5	1962	1
50 mm (1.97 in): Days with 50 mm or more rain	7	1	1952	1
10 cm (3.9 in): Days with 10 cm or more snowfall	61	8	1966	1
25 cm (9.8 in): Days with 25 cm or more snowfall	11	1	1963	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

Data for Dillinger 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).

Dillinger Threshold Days by Year (USC00482580)

Key Facts for Dillinger Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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