June weather in St. Marys, IA
The average temperature in St. Marys in June is 70.7°F (60.0°F–81.4°F). Average precipitation: 5.72 inches.
June is a summer month in St. Marys, and is warmer than the annual average of 49.9°F. Daily temperatures swing about 21.4°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 14h 56m. For travel, June is a wet month.
Avg High
81.4°F
Avg Low
60.0°F
Precipitation
5.72 in
Daylight
14h 56m
June records in St. Marys
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| June 1 | 98.1°F (1934) | 39.0°F (1966) | 2.37 in (1980) |
| June 2 | 102.0°F (1934) | 42.1°F (2001) | 1.94 in (1917) |
| June 3 | 95.0°F (1972) | 37.0°F (1969) | 1.28 in (2008) |
| June 4 | 97.0°F (1942) | 36.0°F (1945) | 1.75 in (1930) |
| June 5 | 102.9°F (1933) | 42.1°F (1982) | 5.66 in (1947) |
| June 6 | 102.0°F (1933) | 42.1°F (1894) | 1.65 in (1907) |
| June 7 | 98.1°F (1933) | 41.0°F (1935) | 1.54 in (1924) |
| June 8 | 98.1°F (1911) | 41.0°F (1913) | 2.09 in (1944) |
| June 9 | 99.0°F (1911) | 41.0°F (1913) | 3.13 in (1974) |
| June 10 | 102.9°F (1933) | 39.9°F (1982) | 5.10 in (2011) |
| June 11 | 96.1°F (1952) | 43.0°F (1972) | 2.50 in (1893) |
| June 12 | 97.0°F (1952) | 41.0°F (1903) | 2.55 in (1947) |
| June 13 | 97.0°F (1952) | 41.0°F (1985) | 4.13 in (1926) |
| June 14 | 99.0°F (1987) | 41.0°F (1942) | 2.97 in (1930) |
| June 15 | 97.0°F (1987) | 43.0°F (1915) | 2.05 in (2001) |
| June 16 | 98.1°F (1918) | 43.0°F (1982) | 2.25 in (1951) |
| June 17 | 97.0°F (1946) | 42.1°F (2005) | 4.13 in (1990) |
| June 18 | 99.0°F (2021) | 45.0°F (1965) | 2.69 in (1935) |
| June 19 | 102.0°F (1956) | 45.0°F (1965) | 1.81 in (2010) |
| June 20 | 100.0°F (1933) | 46.9°F (1961) | 2.25 in (2020) |
| June 21 | 100.0°F (1988) | 41.0°F (1982) | 2.25 in (1952) |
| June 22 | 100.9°F (1988) | 43.0°F (1902) | 2.30 in (2010) |
| June 23 | 100.9°F (1934) | 46.0°F (1982) | 1.70 in (1978) |
| June 24 | 99.0°F (1937) | 44.1°F (1972) | 2.57 in (1924) |
| June 25 | 100.0°F (1933) | 42.1°F (1897) | 5.61 in (2015) |
| June 26 | 105.1°F (1934) | 44.1°F (1926) | 4.31 in (2003) |
| June 27 | 102.0°F (1934) | 44.1°F (2017) | 2.70 in (1985) |
| June 28 | 102.9°F (1934) | 48.0°F (1968) | 1.88 in (1969) |
| June 29 | 100.0°F (1911) | 48.0°F (1923) | 1.69 in (1978) |
| June 30 | 100.9°F (1933) | 44.1°F (1943) | 5.42 in (1959) |