January weather in Olney, IL
The average temperature in Olney in January is 29.3°F (20.8°F–37.8°F). Average precipitation: 3.52 inches. Average snowfall is 3.6 inches.
January is a winter month in Olney, and is cooler than the annual average of 54.2°F. Daily temperatures swing about 17°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 9h 34m. For travel, January is cold.
Avg High
37.8°F
Avg Low
20.8°F
Precipitation
3.52 in
Snow
3.6 in
January records in Olney
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 69.1°F (1952) | -9.9°F (1968) | 3.17 in (1948) |
| January 2 | 64.0°F (1897) | -6.0°F (1928) | 1.28 in (1999) |
| January 3 | 69.1°F (2000) | -5.1°F (1928) | 1.89 in (1907) |
| January 4 | 66.0°F (1997) | -5.1°F (1981) | 2.66 in (1950) |
| January 5 | 64.0°F (1997) | -11.9°F (1924) | 2.46 in (1917) |
| January 6 | 64.0°F (1907) | -9.9°F (2014) | 2.43 in (1895) |
| January 7 | 64.9°F (1907) | -20.9°F (1912) | 2.02 in (1937) |
| January 8 | 70.0°F (1965) | -9.9°F (1942) | 1.07 in (1920) |
| January 9 | 66.9°F (2026) | -6.0°F (1979) | 1.20 in (1898) |
| January 10 | 62.1°F (1975) | -14.1°F (1982) | 1.47 in (1975) |
| January 11 | 66.0°F (1911) | -18.0°F (1977) | 1.64 in (2020) |
| January 12 | 69.1°F (1960) | -18.0°F (1918) | 1.52 in (1916) |
| January 13 | 66.0°F (1995) | -16.1°F (1918) | 2.72 in (2013) |
| January 14 | 64.9°F (1928) | -8.0°F (1964) | 2.70 in (1937) |
| January 15 | 66.9°F (1949) | -8.0°F (1979) | 1.50 in (1997) |
| January 16 | 70.0°F (1990) | -14.1°F (1972) | 1.23 in (1907) |
| January 17 | 66.0°F (1952) | -23.1°F (1977) | 1.37 in (1932) |
| January 18 | 64.9°F (1974) | -20.0°F (1994) | 2.48 in (1949) |
| January 19 | 66.9°F (1907) | -24.0°F (1994) | 1.43 in (1988) |
| January 20 | 72.0°F (1906) | -18.9°F (1985) | 1.35 in (1990) |
| January 21 | 68.0°F (1986) | -18.9°F (1984) | 1.86 in (1932) |
| January 22 | 68.0°F (2017) | -14.1°F (1977) | 2.52 in (1999) |
| January 23 | 73.9°F (1909) | -11.9°F (1936) | 1.49 in (1996) |
| January 24 | 75.0°F (1943) | -18.0°F (1915) | 1.60 in (1949) |
| January 25 | 72.0°F (1950) | -9.9°F (1915) | 1.60 in (1990) |
| January 26 | 69.1°F (1950) | -6.0°F (1940) | 2.40 in (1950) |
| January 27 | 66.9°F (1944) | -17.0°F (1904) | 2.13 in (1997) |
| January 28 | 66.9°F (1970) | -18.9°F (1963) | 1.04 in (1969) |
| January 29 | 66.9°F (2002) | -9.9°F (1977) | 2.07 in (1969) |
| January 30 | 69.1°F (2002) | -14.1°F (1978) | 2.83 in (1916) |
| January 31 | 64.9°F (1989) | -11.9°F (1965) | 2.72 in (2002) |