January weather in Decorah, IA
The average temperature in Decorah in January is 19.0°F (10.4°F–27.7°F). Average precipitation: 1.01 inches. Average snowfall is 10.3 inches.
January is a winter month in Decorah, and is cooler than the annual average of 48.5°F. Daily temperatures swing about 17.3°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 9h 8m. For travel, January is cold.
Avg High
27.7°F
Avg Low
10.4°F
Precipitation
1.01 in
Snow
10.3 in
January records in Decorah
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 57.0°F (1897) | -24.0°F (1974) | 0.60 in (1978) |
| January 2 | 52.0°F (1897) | -25.1°F (1979) | 1.00 in (1906) |
| January 3 | 48.9°F (2007) | -24.0°F (1911) | 0.96 in (1897) |
| January 4 | 46.9°F (2007) | -31.0°F (1919) | 1.15 in (1971) |
| January 5 | 55.0°F (2012) | -27.9°F (1924) | 0.80 in (1932) |
| January 6 | 52.0°F (2012) | -33.0°F (1988) | 0.48 in (1913) |
| January 7 | 55.9°F (2003) | -36.9°F (1912) | 0.40 in (1967) |
| January 8 | 55.9°F (2003) | -25.1°F (1971) | 0.87 in (1937) |
| January 9 | 55.0°F (1939) | -26.0°F (1977) | 1.06 in (2026) |
| January 10 | 53.1°F (2012) | -29.0°F (1982) | 0.80 in (1924) |
| January 11 | 52.0°F (2012) | -31.0°F (1912) | 0.58 in (1905) |
| January 12 | 48.0°F (2013) | -36.9°F (1912) | 0.70 in (1898) |
| January 13 | 48.9°F (1996) | -29.0°F (1912) | 0.51 in (1950) |
| January 14 | 55.9°F (1914) | -24.0°F (1924) | 0.68 in (1930) |
| January 15 | 53.1°F (1990) | -38.9°F (1963) | 0.64 in (1952) |
| January 16 | 50.0°F (1894) | -34.1°F (2009) | 0.50 in (1969) |
| January 17 | 53.1°F (1894) | -29.0°F (1924) | 0.56 in (1915) |
| January 18 | 51.1°F (1996) | -35.0°F (1967) | 0.64 in (1931) |
| January 19 | 46.9°F (2013) | -31.0°F (1970) | 1.09 in (1935) |
| January 20 | 50.0°F (2018) | -36.0°F (1994) | 0.65 in (1902) |
| January 21 | 52.0°F (2018) | -32.1°F (1970) | 0.70 in (1917) |
| January 22 | 55.0°F (2002) | -36.9°F (1930) | 1.22 in (2018) |
| January 23 | 54.0°F (2002) | -29.9°F (1937) | 0.45 in (1897) |
| January 24 | 55.0°F (1981) | -32.1°F (1936) | 0.60 in (1896) |
| January 25 | 57.9°F (2002) | -29.9°F (1936) | 1.25 in (1967) |
| January 26 | 60.1°F (2002) | -31.0°F (1930) | 0.52 in (1916) |
| January 27 | 59.0°F (2002) | -31.0°F (1904) | 0.71 in (1996) |
| January 28 | 55.0°F (2002) | -31.0°F (1915) | 0.95 in (1914) |
| January 29 | 54.0°F (2025) | -29.9°F (1965) | 0.64 in (1909) |
| January 30 | 62.1°F (2025) | -43.1°F (1951) | 0.60 in (1937) |
| January 31 | 61.0°F (2025) | -36.9°F (1996) | 0.61 in (1915) |