Rockford 3 ESE Threshold Days by Year (USC00017020)
16 fixed thresholds counted per year at Rockford 3 ESE (USC00017020): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Rockford 3 ESE Thresholds
- Rockford 3 ESE: days with 10 mm (0.39 in) or more of precipitation in 55 years, most in 2009 with 69.
- Rockford 3 ESE: days with 25 mm (0.98 in) or more of precipitation in 55 years, most in 1975 with 30.
- Rockford 3 ESE: days with 50 mm (1.97 in) or more of precipitation in 55 years, most in 2017 with 13.
- Rockford 3 ESE: days with a maximum temperature at or above 30 C (86 F) in 47 years, most in 1955 with 142.
- 16 fixed thresholds have at least one qualifying day at Rockford 3 ESE.
Days at or above 30 C (86 F)
47 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1955 | 142 | 126.8 |
| 1956 | 116 | 126.8 |
| 1957 | 126 | 126.8 |
| 1958 | 116 | 126.8 |
| 1959 | 134 | 126.8 |
| 1960 | 123 | 99.3 |
| 1961 | 102 | 99.3 |
| 1962 | 140 | 99.3 |
| 1963 | 116 | 99.3 |
| 1964 | 78 | 99.3 |
| 1965 | 96 | 99.3 |
| 1966 | 82 | 99.3 |
| 1967 | 62 | 99.3 |
| 1968 | 95 | 99.3 |
| 1969 | 99 | 99.3 |
| 1970 | 113 | 98.8 |
| 1971 | 112 | 98.8 |
| 1972 | 103 | 98.8 |
| 1973 | 120 | 98.8 |
| 1974 | 77 | 98.8 |
| 1975 | 76 | 98.8 |
| 1976 | 72 | 98.8 |
| 1977 | 121 | 98.8 |
| 1978 | 120 | 98.8 |
| 1979 | 74 | 98.8 |
| 1980 | 85 | 89.3 |
| 1981 | 109 | 89.3 |
| 1983 | 76 | 89.3 |
| 1984 | 94 | 89.3 |
| 1986 | 114 | 89.3 |
| 1989 | 58 | 89.3 |
| 1990 | 109 | 91 |
| 1991 | 73 | 91 |
| 2002 | 102 | 85.9 |
| 2003 | 63 | 85.9 |
| 2004 | 64 | 85.9 |
| 2005 | 80 | 85.9 |
| 2006 | 112 | 85.9 |
| 2007 | 112 | 85.9 |
| 2008 | 95 | 85.9 |
| 2009 | 59 | 85.9 |
| 2010 | 112 | 100.7 |
| 2011 | 111 | 100.7 |
| 2012 | 76 | 100.7 |
| 2013 | 60 | 100.7 |
| 2014 | 111 | 100.7 |
| 2015 | 134 | 100.7 |
| Year | First date | Last date |
|---|---|---|
| 1955 | 1955-03-14 | 1955-10-07 |
| 1956 | 1956-04-29 | 1956-09-23 |
| 1957 | 1957-04-20 | 1957-09-23 |
| 1958 | 1958-04-20 | 1958-10-11 |
| 1959 | 1959-05-01 | 1959-10-14 |
| 1960 | 1960-04-15 | 1960-10-15 |
| 1961 | 1961-05-06 | 1961-11-02 |
| 1962 | 1962-05-02 | 1962-10-18 |
| 1963 | 1963-04-01 | 1963-10-27 |
| 1964 | 1964-04-19 | 1964-09-26 |
| 1965 | 1965-04-10 | 1965-09-24 |
| 1966 | 1966-04-14 | 1966-09-13 |
| 1967 | 1967-04-06 | 1967-09-21 |
| 1968 | 1968-05-14 | 1968-10-03 |
| 1969 | 1969-05-07 | 1969-09-28 |
| 1970 | 1970-04-22 | 1970-10-04 |
| 1971 | 1971-04-18 | 1971-10-17 |
| 1972 | 1972-04-15 | 1972-10-18 |
| 1973 | 1973-05-11 | 1973-10-10 |
| 1974 | 1974-03-10 | 1974-09-22 |
| 1975 | 1975-04-28 | 1975-10-14 |
| 1976 | 1976-04-04 | 1976-09-19 |
| 1977 | 1977-04-13 | 1977-10-02 |
| 1978 | 1978-04-06 | 1978-09-24 |
| 1979 | 1979-05-10 | 1979-09-11 |
| 1980 | 1980-04-23 | 1980-09-25 |
| 1981 | 1981-04-14 | 1981-10-06 |
| 1983 | 1983-06-03 | 1983-09-18 |
| 1984 | 1984-05-06 | 1984-09-26 |
| 1986 | 1986-04-06 | 1986-10-05 |
| 1989 | 1989-04-26 | 1989-09-14 |
| 1990 | 1990-04-30 | 1990-10-09 |
| 1991 | 1991-05-17 | 1991-09-18 |
| 2002 | 2002-04-17 | 2002-10-06 |
| 2003 | 2003-05-06 | 2003-09-20 |
| 2004 | 2004-05-06 | 2004-09-09 |
| 2005 | 2005-05-12 | 2005-09-29 |
| 2006 | 2006-04-03 | 2006-09-23 |
| 2007 | 2007-03-25 | 2007-10-08 |
| 2008 | 2008-05-20 | 2008-09-14 |
| 2009 | 2009-04-23 | 2009-09-09 |
| 2010 | 2010-04-05 | 2010-09-25 |
| 2011 | 2011-04-09 | 2011-09-14 |
| 2012 | 2012-04-30 | 2012-09-08 |
| 2013 | 2013-05-21 | 2013-09-16 |
| 2014 | 2014-05-04 | 2014-10-09 |
| 2015 | 2015-04-03 | 2015-09-21 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 47 | 142 | 1955 | 134 |
| 35 C (95 F): Days | 38 | 38 | 1957 | 19 |
| 40 C (104 F): Days | 1 | 1 | 1956 | 1 |
| 90 F (32.2 C): Days | 47 | 107 | 1962 | 79 |
| 100 F (37.8 C): Days | 12 | 12 | 2007 | 2 |
| 0 C (32 F): Ice days (max | 20 | 5 | 1970 | 2 |
| 0 C (32 F): Frost days (min | 46 | 86 | 1956 | 18 |
| -10 C (14 F): Days with min | 38 | 12 | 1977 | 3 |
| -20 C (-4 F): Days with min | 1 | 0 | n/a | 1 |
| 20 C (68 F): Tropical nights (min | 46 | 137 | 2015 | 137 |
| 25 C (77 F): Days with min | 4 | 7 | 2015 | 7 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 55 | 69 | 2009 | 45 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 55 | 30 | 1975 | 21 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 55 | 13 | 2017 | 6 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 23 | 3 | 2009 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 4 | 1 | 1962 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.
Download the Data
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 . Last revised (2025-12-31).