Iowa: Temperature Extremes
Updated February 21, 2017 | Factmonster Staff 
| Month | Maximum °F | Year | Place | Minimum °F | Year | Place |
|---|---|---|---|---|---|---|
| Jan. | 73 | 1950 | Keokuk | –47 | 1912 | Washta |
| Feb. | 82 | 1972 | Sidney | –47 | 1996 | Elkader |
| March | 95 | 1986 | Ida Grove | –35 | 1962 | Hampton* |
| April | 100 | 1980 | Waterloo* | –9 | 1982 | Manchester |
| May | 111 | 1934 | Inwood | 10 | 1967 | Swea City |
| June | 111 | 1934 | Lamoni | 27 | 1946 | Decorah |
| July | 118 | 1934 | Keokuk | 35 | 1984 | Elkader |
| Aug. | 116 | 1934 | Keokuk | 30 | 1950 | Sibley* |
| Sept. | 107 | 1939 | Logan* | 15 | 1899 | Sibley* |
| Oct. | 97 | 1963 | Forest City* | –15 | 1925 | Inwood |
| Nov. | 86 | 1899 | Burlington | –25 | 1887 | Unknown |
| Dec. | 74 | 1939 | Thurman | –40 | 1917 | Washta |
*Also on earlier dates at the same time or other places.
