June weather in Alton, MO
The average temperature in Alton in June is 73.4°F (61.7°F–85.0°F). Average precipitation: 3.31 inches.
June is a summer month in Alton, and is warmer than the annual average of 55.7°F. Daily temperatures swing about 23.3°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 14h 28m. For travel, June is a comfortable month to visit.
Avg High
85.0°F
Avg Low
61.7°F
Precipitation
3.31 in
Daylight
14h 28m
June records in Alton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| June 1 | 91.9°F (1998) | 44.1°F (1972) | 1.86 in (1946) |
| June 2 | 95.0°F (1971) | 44.1°F (1969) | 1.96 in (1941) |
| June 3 | 96.1°F (1998) | 39.9°F (1969) | 2.50 in (1950) |
| June 4 | 93.9°F (1998) | 46.0°F (1964) | 2.55 in (1946) |
| June 5 | 97.0°F (1977) | 45.0°F (2009) | 2.67 in (1946) |
| June 6 | 93.9°F (1969) | 48.0°F (1998) | 1.39 in (1995) |
| June 7 | 93.9°F (1969) | 43.0°F (2000) | 1.21 in (1974) |
| June 8 | 98.1°F (1982) | 45.0°F (1998) | 1.02 in (1974) |
| June 9 | 93.9°F (1972) | 45.0°F (1978) | 1.92 in (1974) |
| June 10 | 95.0°F (1972) | 45.0°F (1978) | 2.18 in (1982) |
| June 11 | 96.1°F (1977) | 44.1°F (1979) | 1.50 in (2005) |
| June 12 | 93.9°F (1977) | 48.9°F (1979) | 1.47 in (2011) |
| June 13 | 93.9°F (1998) | 50.0°F (1974) | 1.80 in (1946) |
| June 14 | 95.0°F (1970) | 48.9°F (1995) | 0.80 in (1949) |
| June 15 | 93.0°F (2010) | 46.9°F (1978) | 1.57 in (2001) |
| June 16 | 91.0°F (1967) | 45.0°F (1969) | 2.40 in (1963) |
| June 17 | 93.9°F (2006) | 45.0°F (1969) | 0.84 in (2000) |
| June 18 | 93.9°F (1998) | 48.9°F (1965) | 3.67 in (2000) |
| June 19 | 95.0°F (2010) | 48.9°F (1981) | 0.82 in (1970) |
| June 20 | 93.0°F (1998) | 50.0°F (1966) | 1.60 in (1950) |
| June 21 | 96.1°F (2010) | 46.9°F (1976) | 2.47 in (1946) |
| June 22 | 97.0°F (2010) | 45.0°F (1979) | 0.69 in (2019) |
| June 23 | 97.0°F (2010) | 46.0°F (1972) | 2.10 in (1946) |
| June 24 | 96.1°F (1971) | 50.0°F (1974) | 3.46 in (1976) |
| June 25 | 99.0°F (2012) | 46.0°F (1974) | 1.45 in (1946) |
| June 26 | 100.9°F (2012) | 46.0°F (1974) | 1.00 in (1958) |
| June 27 | 98.1°F (1978) | 46.9°F (1979) | 1.15 in (1960) |
| June 28 | 99.0°F (1978) | 51.1°F (1970) | 1.01 in (1972) |
| June 29 | 98.1°F (1978) | 53.1°F (1974) | 1.52 in (1995) |
| June 30 | 102.0°F (2023) | 55.0°F (1972) | 1.40 in (1951) |