May weather in Palmyra, IL
The average temperature in Palmyra in May is 63.8°F (53.5°F–74.1°F). Average precipitation: 4.27 inches.
May is a spring month in Palmyra, and is warmer than the annual average of 53.4°F. Daily temperatures swing about 20.6°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 14h 10m. For travel, May is a comfortable month to visit.
Avg High
74.1°F
Avg Low
53.5°F
Precipitation
4.27 in
Daylight
14h 10m
May records in Palmyra
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 90.0°F (1895) | 28.0°F (1903) | 2.74 in (1983) |
| May 2 | 90.0°F (1901) | 30.0°F (1966) | 1.84 in (1929) |
| May 3 | 90.0°F (1895) | 30.0°F (1976) | 1.75 in (1958) |
| May 4 | 91.0°F (1959) | 30.9°F (1907) | 1.57 in (2013) |
| May 5 | 93.0°F (1943) | 33.1°F (1917) | 1.27 in (1977) |
| May 6 | 90.0°F (1896) | 30.0°F (1944) | 1.84 in (1900) |
| May 7 | 90.0°F (1896) | 30.0°F (1906) | 1.98 in (1978) |
| May 8 | 91.0°F (1895) | 30.9°F (1976) | 2.46 in (1961) |
| May 9 | 98.1°F (1895) | 30.0°F (1983) | 1.84 in (1968) |
| May 10 | 91.9°F (1928) | 26.1°F (1966) | 1.63 in (1981) |
| May 11 | 88.0°F (1905) | 32.0°F (1907) | 2.04 in (1912) |
| May 12 | 93.0°F (2022) | 32.0°F (1960) | 2.41 in (1990) |
| May 13 | 93.0°F (2022) | 34.0°F (1960) | 2.28 in (1984) |
| May 14 | 91.0°F (1932) | 30.0°F (1895) | 1.51 in (1967) |
| May 15 | 91.0°F (1944) | 36.0°F (1920) | 1.36 in (1948) |
| May 16 | 90.0°F (1899) | 35.1°F (1921) | 2.55 in (1953) |
| May 17 | 91.0°F (1911) | 34.0°F (2014) | 2.64 in (1943) |
| May 18 | 91.9°F (1964) | 37.9°F (1925) | 2.60 in (1896) |
| May 19 | 91.9°F (1996) | 35.1°F (1925) | 1.44 in (1896) |
| May 20 | 91.9°F (1902) | 36.0°F (1954) | 1.34 in (1911) |
| May 21 | 96.1°F (1925) | 35.1°F (1895) | 3.72 in (2013) |
| May 22 | 93.0°F (1925) | 33.1°F (1924) | 1.36 in (1957) |
| May 23 | 91.0°F (1925) | 36.0°F (1963) | 1.76 in (1968) |
| May 24 | 93.9°F (1939) | 36.0°F (1913) | 2.77 in (1927) |
| May 25 | 93.9°F (1911) | 28.9°F (1925) | 1.85 in (1968) |
| May 26 | 96.1°F (1911) | 33.1°F (1925) | 2.50 in (1893) |
| May 27 | 93.9°F (1911) | 37.0°F (1961) | 2.17 in (1919) |
| May 28 | 93.9°F (1911) | 36.0°F (1907) | 1.26 in (1917) |
| May 29 | 95.0°F (1926) | 35.1°F (1965) | 0.98 in (1989) |
| May 30 | 99.0°F (1934) | 34.0°F (1947) | 2.49 in (1974) |
| May 31 | 99.0°F (1934) | 36.0°F (1930) | 1.13 in (1906) |