Average High: 77 Average Low: 54 (recorded for the National Weather Service at KJAN, Atlantic, IA)
| Date | Sunrise | Sunset | High | Year | Low | Year |
| 1 | 5:45 | 6:53 | 99 | 1913 | 34 | 1967 |
| 2 | 5:46 | 6:52 | 101 | 2000 | 30 | 1893 |
| 3 | 5:47 | 6:50 | 102 | 1937 | 32 | 1974 |
| 4 | 5:48 | 6:48 | 101 | 1918 | 33 | 1891 |
| 5 | 5:50 | 6:47 | 104 | 1913 | 34 | 1962 |
| 6 | 5:50 | 6:45 | 103 | 1939 | 36 | 1962 |
| 7 | 5:51 | 6:43 | 98 | 1893 | 34 | 1956 |
| 8 | 5:52 | 6:42 | 100 | 1947 | 36 | 1986 |
| 9 | 5:53 | 6:40 | 100 | 1893 | 36 | 1959 |
| 10 | 5:54 | 6:38 | 98 | 1938 | 36 | 1959 |
| 11 | 5:56 | 6:37 | 96 | 1895/1936 | 31 | 1955 |
| 12 | 5:57 | 6:35 | 97 | 1939/2000 | 28 | 1902 |
| 13 | 5:57 | 6:33 | 98 | 1893/1939 | 25 | 1902 |
| 14 | 5:58 | 6:31 | 99 | 1939 | 29 | 1892 |
| 15 | 6:00 | 6:30 | 99 | 1939 | 31 | 1961 |
| 16 | 6:01 | 6:28 | 95 | 1931 | 28 | 1893 |
| 17 | 6:01 | 6:26 | 97 | 1925 | 31 | 1980 |
| 18 | 6:03 | 6:25 | 99 | 1893 | 26 | 1901 |
| 19 | 6:04 | 6:23 | 95 | 1948 | 33 | 1896/1938 |
| 20 | 6:05 | 6:21 | 99 | 2022 | 28 | 1901/1962 |
| 21 | 6:06 | 6:20 | 96 | 1937 | 29 | 1918/1999 |
| 22 | 6:07 | 6:18 | 98 | 1937 | 27 | 1974/1995/ 2012 |
| 23 | 6:08 | 6:18 | 99 | 1892 | 23 | 1983 |
| 24 | 6:09 | 6:14 | 93 | 1892 | 28 | 1965 |
| 25 | 6:10 | 6:13 | 90 | 1897 | 25 | 1893 |
| 26 | 6:11 | 6:11 | 91 | 1897/1998 | 24 | 1984 |
| 27 | 6:12 | 6:09 | 94 | 2021 | 28 | 1893 |
| 28 | 6:13 | 6:07 | 100 | 1953 | 22 | 1908 |
| 29 | 6:14 | 6:06 | 96 | 1953 | 17 | 1899 |
| 30 | 6:15 | 6:04 | 92 | 1994/2023 | 21 | 1984 |
