May weather in Pontiac, IL
The average temperature in Pontiac in May is 62.8°F (52.1°F–73.6°F). Average precipitation: 4.43 inches.
May is a spring month in Pontiac, and is warmer than the annual average of 51.8°F. Daily temperatures swing about 21.5°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 17m. For travel, May is a comfortable month to visit.
Avg High
73.6°F
Avg Low
52.1°F
Precipitation
4.43 in
Daylight
14h 17m
May records in Pontiac
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 89.1°F (2007) | 28.9°F (1907) | 1.94 in (1986) |
| May 2 | 88.0°F (1959) | 28.0°F (1966) | 1.95 in (1983) |
| May 3 | 91.0°F (1928) | 28.9°F (2005) | 2.00 in (1935) |
| May 4 | 89.1°F (1959) | 28.9°F (2005) | 1.50 in (1919) |
| May 5 | 90.0°F (1959) | 32.0°F (1910) | 2.69 in (1965) |
| May 6 | 91.9°F (1934) | 30.0°F (1989) | 1.32 in (1941) |
| May 7 | 89.1°F (1916) | 25.0°F (1989) | 1.30 in (2012) |
| May 8 | 90.0°F (1963) | 35.1°F (1923) | 1.55 in (1943) |
| May 9 | 93.9°F (1934) | 28.9°F (1966) | 1.40 in (2003) |
| May 10 | 90.0°F (1934) | 24.1°F (1966) | 2.12 in (2016) |
| May 11 | 91.0°F (2011) | 28.9°F (1907) | 4.76 in (1962) |
| May 12 | 90.0°F (1956) | 32.0°F (1928) | 3.15 in (2002) |
| May 13 | 89.1°F (1956) | 32.0°F (1938) | 1.61 in (1908) |
| May 14 | 91.9°F (1932) | 33.1°F (1910) | 2.88 in (1995) |
| May 15 | 90.0°F (1911) | 36.0°F (1920) | 1.26 in (1923) |
| May 16 | 90.0°F (1962) | 34.0°F (1921) | 2.00 in (1968) |
| May 17 | 93.0°F (1911) | 34.0°F (1997) | 1.47 in (1938) |
| May 18 | 93.0°F (1911) | 34.0°F (1925) | 4.15 in (1966) |
| May 19 | 93.9°F (1975) | 34.0°F (1929) | 1.70 in (1931) |
| May 20 | 93.9°F (1996) | 35.1°F (1954) | 1.90 in (1913) |
| May 21 | 93.0°F (1934) | 33.1°F (2002) | 1.91 in (1913) |
| May 22 | 96.1°F (1925) | 37.0°F (2002) | 1.58 in (1944) |
| May 23 | 93.9°F (1921) | 34.0°F (1917) | 2.19 in (1984) |
| May 24 | 93.9°F (1921) | 37.0°F (1935) | 2.39 in (1995) |
| May 25 | 95.0°F (1911) | 30.0°F (1925) | 1.12 in (1909) |
| May 26 | 96.1°F (1911) | 35.1°F (1925) | 1.23 in (1921) |
| May 27 | 95.0°F (1911) | 35.1°F (1992) | 3.42 in (2013) |
| May 28 | 95.0°F (1911) | 37.9°F (1992) | 1.06 in (1954) |
| May 29 | 98.1°F (1934) | 35.1°F (1965) | 2.06 in (2013) |
| May 30 | 98.1°F (1934) | 37.0°F (1930) | 1.75 in (1904) |
| May 31 | 102.0°F (1934) | 42.1°F (1966) | 2.38 in (2004) |