May weather in Alto Pass, IL
The average temperature in Alto Pass in May is 67.6°F (56.1°F–79.0°F). Average precipitation: 5.93 inches.
May is a spring month in Alto Pass, and is warmer than the annual average of 58.5°F. Daily temperatures swing about 22.9°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 1m. For travel, May is a wet month.
Avg High
79.0°F
Avg Low
56.1°F
Precipitation
5.93 in
Daylight
14h 1m
May records in Alto Pass
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 93.0°F (1901) | 30.9°F (1903) | 2.08 in (1962) |
| May 2 | 91.9°F (1901) | 33.1°F (2005) | 4.49 in (2011) |
| May 3 | 91.0°F (1901) | 33.1°F (2005) | 1.77 in (1958) |
| May 4 | 90.0°F (1959) | 30.9°F (1954) | 1.20 in (1935) |
| May 5 | 91.9°F (1952) | 37.0°F (1907) | 1.76 in (1933) |
| May 6 | 90.0°F (1949) | 35.1°F (1944) | 2.85 in (1931) |
| May 7 | 89.1°F (1934) | 35.1°F (1906) | 2.57 in (1961) |
| May 8 | 89.1°F (1896) | 37.9°F (1917) | 2.15 in (2002) |
| May 9 | 91.9°F (1896) | 36.0°F (1947) | 1.28 in (1944) |
| May 10 | 90.0°F (1896) | 32.0°F (1966) | 2.36 in (1968) |
| May 11 | 91.9°F (1902) | 37.0°F (1997) | 2.42 in (1918) |
| May 12 | 90.0°F (1902) | 36.0°F (1960) | 4.00 in (1918) |
| May 13 | 91.9°F (1902) | 37.0°F (1997) | 4.42 in (2002) |
| May 14 | 90.0°F (1913) | 37.9°F (1920) | 2.45 in (1933) |
| May 15 | 89.1°F (1899) | 36.0°F (1997) | 3.43 in (1986) |
| May 16 | 90.0°F (2001) | 30.9°F (1997) | 3.80 in (1986) |
| May 17 | 91.9°F (1911) | 41.0°F (2005) | 3.12 in (2002) |
| May 18 | 91.9°F (1906) | 37.0°F (2002) | 3.03 in (1969) |
| May 19 | 90.0°F (1911) | 37.9°F (2002) | 2.52 in (1896) |
| May 20 | 95.0°F (1902) | 39.0°F (2002) | 2.56 in (1931) |
| May 21 | 93.9°F (1902) | 39.9°F (1954) | 2.82 in (1983) |
| May 22 | 95.0°F (1902) | 37.9°F (1997) | 4.25 in (1957) |
| May 23 | 91.0°F (1912) | 37.9°F (1997) | 2.47 in (1957) |
| May 24 | 93.0°F (1911) | 37.9°F (2002) | 2.04 in (2000) |
| May 25 | 95.0°F (1911) | 37.9°F (2002) | 2.16 in (1946) |
| May 26 | 98.1°F (1911) | 41.0°F (1901) | 2.60 in (2008) |
| May 27 | 95.0°F (1911) | 35.1°F (1961) | 4.75 in (1973) |
| May 28 | 98.1°F (1911) | 34.0°F (2003) | 1.64 in (2017) |
| May 29 | 93.9°F (1926) | 34.0°F (2003) | 1.84 in (1916) |
| May 30 | 93.9°F (1937) | 34.0°F (2003) | 1.39 in (2019) |
| May 31 | 96.1°F (1913) | 39.9°F (1897) | 4.76 in (1997) |