Oskaloosa 4 NE Threshold Days by Year (USC00146100)
20 fixed thresholds counted per year at Oskaloosa 4 NE (USC00146100): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Oskaloosa 4 NE Thresholds
- Oskaloosa 4 NE: days with 10 mm (0.39 in) or more of precipitation in 52 years, most in 1973 with 45.
- Oskaloosa 4 NE: days with 25 mm (0.98 in) or more of precipitation in 52 years, most in 1961 with 21.
- Oskaloosa 4 NE: days with a maximum temperature at or above 30 C (86 F) in 49 years, most in 1980 with 111.
- Oskaloosa 4 NE: days with a maximum temperature at or above 90 F (32.2 C) in 49 years, most in 1980 with 84.
- 20 fixed thresholds have at least one qualifying day at Oskaloosa 4 NE.
Days at or above 30 C (86 F)
49 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1959 | 80 | 80 |
| 1960 | 69 | 68.1 |
| 1961 | 65 | 68.1 |
| 1962 | 79 | 68.1 |
| 1963 | 100 | 68.1 |
| 1964 | 72 | 68.1 |
| 1965 | 53 | 68.1 |
| 1966 | 56 | 68.1 |
| 1967 | 50 | 68.1 |
| 1968 | 68 | 68.1 |
| 1969 | 69 | 68.1 |
| 1970 | 82 | 80.9 |
| 1971 | 88 | 80.9 |
| 1973 | 71 | 80.9 |
| 1974 | 68 | 80.9 |
| 1975 | 84 | 80.9 |
| 1976 | 92 | 80.9 |
| 1977 | 73 | 80.9 |
| 1978 | 95 | 80.9 |
| 1979 | 75 | 80.9 |
| 1980 | 111 | 78 |
| 1981 | 67 | 78 |
| 1982 | 57 | 78 |
| 1983 | 87 | 78 |
| 1984 | 87 | 78 |
| 1985 | 73 | 78 |
| 1986 | 68 | 78 |
| 1987 | 73 | 78 |
| 1988 | 88 | 78 |
| 1989 | 69 | 78 |
| 1990 | 70 | 60.5 |
| 1991 | 85 | 60.5 |
| 1992 | 28 | 60.5 |
| 1993 | 52 | 60.5 |
| 1994 | 68 | 60.5 |
| 1995 | 61 | 60.5 |
| 1996 | 51 | 60.5 |
| 1997 | 63 | 60.5 |
| 1998 | 73 | 60.5 |
| 1999 | 54 | 60.5 |
| 2000 | 84 | 61.9 |
| 2001 | 64 | 61.9 |
| 2002 | 87 | 61.9 |
| 2003 | 70 | 61.9 |
| 2004 | 35 | 61.9 |
| 2005 | 71 | 61.9 |
| 2007 | 42 | 61.9 |
| 2008 | 42 | 61.9 |
| 2010 | 88 | 88 |
| Year | First date | Last date |
|---|---|---|
| 1959 | 1959-05-01 | 1959-09-22 |
| 1960 | 1960-04-22 | 1960-10-11 |
| 1961 | 1961-04-20 | 1961-09-10 |
| 1962 | 1962-04-29 | 1962-10-14 |
| 1963 | 1963-04-01 | 1963-10-22 |
| 1964 | 1964-04-16 | 1964-09-19 |
| 1965 | 1965-04-20 | 1965-10-10 |
| 1966 | 1966-03-31 | 1966-09-10 |
| 1967 | 1967-03-29 | 1967-10-04 |
| 1968 | 1968-05-01 | 1968-09-21 |
| 1969 | 1969-05-26 | 1969-10-04 |
| 1970 | 1970-04-27 | 1970-09-20 |
| 1971 | 1971-04-12 | 1971-10-16 |
| 1973 | 1973-05-18 | 1973-10-08 |
| 1974 | 1974-05-13 | 1974-09-18 |
| 1975 | 1975-04-17 | 1975-10-13 |
| 1976 | 1976-04-02 | 1976-10-11 |
| 1977 | 1977-05-15 | 1977-09-17 |
| 1978 | 1978-05-19 | 1978-10-21 |
| 1979 | 1979-05-28 | 1979-10-21 |
| 1980 | 1980-04-20 | 1980-10-09 |
| 1981 | 1981-04-17 | 1981-10-01 |
| 1982 | 1982-06-08 | 1982-10-05 |
| 1983 | 1983-05-28 | 1983-10-02 |
| 1984 | 1984-05-13 | 1984-09-24 |
| 1985 | 1985-05-25 | 1985-09-19 |
| 1986 | 1986-03-29 | 1986-09-29 |
| 1987 | 1987-04-19 | 1987-09-05 |
| 1988 | 1988-05-14 | 1988-09-23 |
| 1989 | 1989-04-21 | 1989-10-14 |
| 1990 | 1990-06-05 | 1990-10-05 |
| 1991 | 1991-03-26 | 1991-10-17 |
| 1992 | 1992-06-16 | 1992-09-15 |
| 1993 | 1993-05-28 | 1993-09-12 |
| 1994 | 1994-04-18 | 1994-09-30 |
| 1995 | 1995-06-07 | 1995-09-05 |
| 1996 | 1996-04-11 | 1996-09-04 |
| 1997 | 1997-05-17 | 1997-10-06 |
| 1998 | 1998-05-13 | 1998-09-27 |
| 1999 | 1999-06-04 | 1999-09-07 |
| 2000 | 2000-04-05 | 2000-10-03 |
| 2001 | 2001-04-29 | 2001-09-06 |
| 2002 | 2002-04-14 | 2002-10-02 |
| 2003 | 2003-05-30 | 2003-10-20 |
| 2004 | 2004-05-06 | 2004-09-18 |
| 2005 | 2005-05-10 | 2005-09-25 |
| 2007 | 2007-04-29 | 2007-10-06 |
| 2008 | 2008-05-25 | 2008-09-02 |
| 2010 | 2010-05-23 | 2010-10-09 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 49 | 111 | 1980 | 88 |
| 35 C (95 F): Days | 47 | 55 | 1980 | 29 |
| 40 C (104 F): Days | 11 | 22 | 1980 | 2 |
| 90 F (32.2 C): Days | 49 | 84 | 1980 | 60 |
| 100 F (37.8 C): Days | 24 | 31 | 1980 | 9 |
| 110 F (43.3 C): Days | 1 | 2 | 1980 | 2 |
| 0 C (32 F): Ice days (max | 49 | 56 | 1978 | 40 |
| 0 C (32 F): Frost days (min | 49 | 134 | 2008 | 109 |
| -10 C (14 F): Days with min | 49 | 52 | 1978 | 37 |
| -20 C (-4 F): Days with min | 39 | 15 | 1979 | 5 |
| -30 C (-22 F): Days with min | 1 | 1 | 1989 | 1 |
| 20 C (68 F): Tropical nights (min | 49 | 63 | 1983 | 56 |
| 25 C (77 F): Days with min | 26 | 11 | 1980 | 5 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 52 | 45 | 1973 | 31 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 52 | 21 | 1961 | 16 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 47 | 8 | 2005 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 13 | 2 | 1962 | 2 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 1 | 1 | 2005 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 33 | 8 | 1960 | 4 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 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 1959.
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).