June weather in St. Charles, MO
The average temperature in St. Charles in June is 74.2°F (64.3°F–84.1°F). Average precipitation: 4.35 inches.
June is a summer month in St. Charles, and is warmer than the annual average of 55.5°F. Daily temperatures swing about 19.8°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 14h 40m. For travel, June is a comfortable month to visit.
Avg High
84.1°F
Avg Low
64.3°F
Precipitation
4.35 in
Daylight
14h 40m
June records in St. Charles
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| June 1 | 104.0°F (1934) | 0.0°F (1947) | 1.75 in (2013) |
| June 2 | 100.9°F (1934) | 0.0°F (1947) | 1.43 in (2019) |
| June 3 | 99.0°F (1911) | 0.0°F (1947) | 3.71 in (1985) |
| June 4 | 99.0°F (1911) | 0.0°F (1947) | 2.89 in (1937) |
| June 5 | 98.1°F (1911) | 0.0°F (1947) | 2.36 in (2025) |
| June 6 | 98.1°F (1940) | 0.0°F (1947) | 1.09 in (1916) |
| June 7 | 96.1°F (1933) | 0.0°F (1947) | 1.80 in (1993) |
| June 8 | 98.1°F (1953) | 0.0°F (1947) | 2.71 in (1962) |
| June 9 | 100.0°F (1911) | 0.0°F (1947) | 2.05 in (1937) |
| June 10 | 102.0°F (1953) | 0.0°F (1947) | 1.58 in (1996) |
| June 11 | 100.0°F (1902) | 0.0°F (1947) | 2.37 in (1938) |
| June 12 | 100.9°F (1953) | 0.0°F (1947) | 2.55 in (2002) |
| June 13 | 99.0°F (1952) | 0.0°F (1947) | 1.79 in (1927) |
| June 14 | 98.1°F (1922) | 0.0°F (1947) | 1.86 in (2005) |
| June 15 | 102.0°F (1952) | 0.0°F (1947) | 4.50 in (1957) |
| June 16 | 102.0°F (1911) | 0.0°F (1947) | 3.24 in (2009) |
| June 17 | 102.0°F (1913) | 0.0°F (1947) | 1.98 in (1975) |
| June 18 | 104.0°F (1913) | 0.0°F (1947) | 2.69 in (2011) |
| June 19 | 105.1°F (1953) | 0.0°F (1947) | 1.94 in (1973) |
| June 20 | 104.0°F (1953) | 0.0°F (1947) | 2.00 in (1928) |
| June 21 | 100.9°F (1913) | 0.0°F (1947) | 1.80 in (1981) |
| June 22 | 100.9°F (1930) | 0.0°F (1947) | 2.00 in (2019) |
| June 23 | 102.9°F (1934) | 0.0°F (1947) | 1.71 in (1919) |
| June 24 | 100.9°F (1937) | 0.0°F (1947) | 3.87 in (2000) |
| June 25 | 105.1°F (1954) | 0.0°F (1947) | 2.38 in (2021) |
| June 26 | 104.0°F (1954) | 0.0°F (1947) | 3.16 in (2011) |
| June 27 | 104.0°F (1934) | 0.0°F (1947) | 2.03 in (1910) |
| June 28 | 105.1°F (1934) | 0.0°F (1947) | 4.55 in (1902) |
| June 29 | 105.1°F (1931) | 0.0°F (1947) | 3.61 in (1960) |
| June 30 | 106.0°F (1931) | 0.0°F (1947) | 1.40 in (1954) |