Rockford Gtr Rockford AP Threshold Days by Year (USW00094822)

18 fixed thresholds counted per year at Rockford Gtr Rockford AP (USW00094822): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rockford Gtr Rockford AP Thresholds

Rockford Gtr Rockford AP: days with a maximum temperature at or above 30 C (86 F) in 76 years, most in 2012 with 72.
Rockford Gtr Rockford AP: days with a maximum temperature at or above 90 F (32.2 C) in 76 years, most in 2012 with 49.
Rockford Gtr Rockford AP: days with a maximum temperature at or below 0 C (32 F) in 76 years, most in 1978 with 84.
Rockford Gtr Rockford AP: nights with a minimum temperature at or below 0 C (32 F) in 76 years, most in 1976 with 172.
18 fixed thresholds have at least one qualifying day at Rockford Gtr Rockford AP.

Days at or above 30 C (86 F)

76 years with a qualifying day

Days per year at Rockford Gtr Rockford AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 72 in 2012.

Days at or above 30 C (86 F) per year at Rockford Gtr Rockford AP
Year	Days	Decade average
1951	15	42.2
1952	48	42.2
1953	51	42.2
1954	49	42.2
1955	59	42.2
1956	46	42.2
1957	36	42.2
1958	26	42.2
1959	50	42.2
1960	28	28.7
1961	35	28.7
1962	32	28.7
1963	41	28.7
1964	33	28.7
1965	22	28.7
1966	37	28.7
1967	15	28.7
1968	26	28.7
1969	18	28.7
1970	38	35.6
1971	56	35.6
1972	27	35.6
1973	31	35.6
1974	28	35.6
1975	38	35.6
1976	41	35.6
1977	39	35.6
1978	33	35.6
1979	25	35.6
1980	43	39.4
1981	19	39.4
1982	20	39.4
1983	62	39.4
1984	41	39.4
1985	36	39.4
1986	26	39.4
1987	50	39.4
1988	68	39.4
1989	29	39.4
1990	27	33.5
1991	67	33.5
1992	19	33.5
1993	27	33.5
1994	35	33.5
1995	50	33.5
1996	20	33.5
1997	26	33.5
1998	26	33.5
1999	38	33.5
2000	20	34.9
2001	44	34.9
2002	52	34.9
2003	41	34.9
2004	9	34.9
2005	61	34.9
2006	29	34.9
2007	60	34.9
2008	21	34.9
2009	12	34.9
2010	44	40.4
2011	50	40.4
2012	72	40.4
2013	37	40.4
2014	17	40.4
2015	27	40.4
2016	43	40.4
2017	36	40.4
2018	42	40.4
2019	36	40.4
2020	55	46.6
2021	66	46.6
2022	39	46.6
2023	35	46.6
2024	46	46.6
2025	51	46.6
2026	34	46.6

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

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

Every Fixed Threshold

Fixed thresholds at Rockford Gtr Rockford AP
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	76	72	2012	34
35 C (95 F): Days	49	23	1988	2
40 C (104 F): Days	2	2	2012	2
90 F (32.2 C): Days	76	49	2012	17
100 F (37.8 C): Days	8	7	1988	1
0 C (32 F): Ice days (max	76	84	1978	31
0 C (32 F): Frost days (min	76	172	1976	83
-10 C (14 F): Days with min	76	75	1978	24
-20 C (-4 F): Days with min	75	39	1963	5
-30 C (-22 F): Days with min	14	3	1982	2
20 C (68 F): Tropical nights (min	76	39	1983	25
25 C (77 F): Days with min	17	3	2011	1
10 mm (0.39 in): Days with 10 mm or more rain	76	41	2019	27
25 mm (0.98 in): Days with 25 mm or more rain	76	18	1973	9
50 mm (1.97 in): Days with 50 mm or more rain	62	7	1972	2
100 mm (3.94 in): Days with 100 mm or more rain	13	2	1972	1
10 cm (3.9 in): Days with 10 cm or more snowfall	64	8	2008	1
25 cm (9.8 in): Days with 25 cm or more snowfall	5	1	1972	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

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Data for Rockford Gtr Rockford 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Rockford Gtr Rockford AP Threshold Days by Year (USW00094822)

Key Facts for Rockford Gtr Rockford AP Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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