May weather in Dallas City, IL
The average temperature in Dallas City in May is 63.1°F (53.8°F–72.3°F). Average precipitation: 5.11 inches.
May is a spring month in Dallas City, and is warmer than the annual average of 52.3°F. Daily temperatures swing about 18.5°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 16m. For travel, May is a wet month.
Avg High
72.3°F
Avg Low
53.8°F
Precipitation
5.11 in
Daylight
14h 16m
May records in Dallas City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 89.1°F (1965) | 30.9°F (1909) | 1.50 in (2025) |
| May 2 | 84.0°F (1968) | 30.0°F (1976) | 1.05 in (2019) |
| May 3 | 86.0°F (1959) | 30.9°F (2005) | 3.78 in (2013) |
| May 4 | 86.0°F (1959) | 33.1°F (2005) | 2.41 in (2012) |
| May 5 | 88.0°F (1959) | 36.0°F (1957) | 1.75 in (1901) |
| May 6 | 88.0°F (1959) | 33.1°F (1989) | 3.70 in (1977) |
| May 7 | 86.0°F (2023) | 34.0°F (1958) | 2.25 in (2010) |
| May 8 | 86.0°F (1895) | 30.0°F (1980) | 1.79 in (1996) |
| May 9 | 90.0°F (1895) | 28.9°F (1980) | 1.51 in (2021) |
| May 10 | 95.0°F (1895) | 36.0°F (1966) | 1.40 in (1894) |
| May 11 | 91.0°F (2007) | 21.9°F (1966) | 3.66 in (2002) |
| May 12 | 90.0°F (1956) | 28.9°F (1966) | 1.77 in (2010) |
| May 13 | 91.0°F (1956) | 36.0°F (1971) | 1.89 in (2010) |
| May 14 | 89.1°F (1894) | 32.0°F (1971) | 3.94 in (1916) |
| May 15 | 89.1°F (1894) | 37.9°F (1959) | 2.20 in (2009) |
| May 16 | 87.1°F (1962) | 35.1°F (1968) | 1.23 in (1995) |
| May 17 | 89.1°F (1894) | 37.0°F (2014) | 2.20 in (1986) |
| May 18 | 90.0°F (1964) | 39.9°F (2002) | 1.94 in (1981) |
| May 19 | 90.0°F (1962) | 39.0°F (2015) | 1.85 in (1959) |
| May 20 | 90.0°F (1893) | 37.9°F (1981) | 1.78 in (1911) |
| May 21 | 88.0°F (1975) | 37.0°F (2002) | 1.42 in (2019) |
| May 22 | 90.0°F (1962) | 37.0°F (1963) | 0.85 in (1969) |
| May 23 | 91.0°F (1962) | 34.0°F (1963) | 1.26 in (1995) |
| May 24 | 91.0°F (2010) | 41.0°F (1979) | 1.80 in (1916) |
| May 25 | 90.0°F (1953) | 39.0°F (1979) | 2.24 in (2011) |
| May 26 | 91.0°F (2018) | 37.9°F (1961) | 2.29 in (1986) |
| May 27 | 95.0°F (2018) | 39.0°F (1961) | 4.06 in (1996) |
| May 28 | 93.0°F (2018) | 42.1°F (1971) | 4.80 in (1908) |
| May 29 | 90.0°F (1953) | 37.9°F (1984) | 1.78 in (1993) |
| May 30 | 93.0°F (1953) | 39.9°F (1965) | 1.27 in (2013) |
| May 31 | 91.9°F (2002) | 42.1°F (1966) | 1.47 in (1957) |