January weather in Rockville, MD
The average temperature in Rockville in January is 34.5°F (26.9°F–42.2°F). Average precipitation: 3.11 inches.
January is a winter month in Rockville, and is cooler than the annual average of 56.2°F. Daily temperatures swing about 15.3°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 33m. For travel, January is cold.
Avg High
42.2°F
Avg Low
26.9°F
Precipitation
3.11 in
Daylight
9h 33m
January records in Rockville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 66.9°F (1966) | -9.0°F (1918) | 2.42 in (1976) |
| January 2 | 69.1°F (1916) | 7.0°F (1918) | 1.90 in (1979) |
| January 3 | 70.0°F (2000) | -2.0°F (1918) | 1.50 in (1914) |
| January 4 | 71.1°F (1997) | -11.9°F (1918) | 1.32 in (1992) |
| January 5 | 68.0°F (1950) | 6.1°F (1912) | 1.44 in (1949) |
| January 6 | 70.0°F (1950) | 1.9°F (1981) | 1.26 in (1995) |
| January 7 | 70.0°F (1950) | 9.0°F (1912) | 1.59 in (1908) |
| January 8 | 70.0°F (1998) | 3.9°F (1968) | 1.29 in (1979) |
| January 9 | 62.1°F (1998) | 5.0°F (1968) | 1.29 in (1953) |
| January 10 | 69.1°F (1950) | 1.0°F (1982) | 1.50 in (1962) |
| January 11 | 73.0°F (1975) | 0.0°F (1982) | 1.23 in (1991) |
| January 12 | 72.0°F (1975) | 1.0°F (1977) | 1.70 in (1915) |
| January 13 | 69.1°F (1995) | -6.0°F (1912) | 1.64 in (1915) |
| January 14 | 71.1°F (1995) | -9.9°F (1912) | 1.70 in (1958) |
| January 15 | 73.0°F (1952) | 3.9°F (1994) | 1.07 in (1995) |
| January 16 | 72.0°F (1952) | -0.9°F (1972) | 0.52 in (1959) |
| January 17 | 66.9°F (1913) | -6.0°F (1982) | 1.27 in (1994) |
| January 18 | 70.0°F (1986) | -9.9°F (1982) | 0.96 in (1978) |
| January 19 | 71.1°F (1951) | -7.1°F (1994) | 1.25 in (2001) |
| January 20 | 71.1°F (1951) | -9.9°F (1985) | 1.09 in (1975) |
| January 21 | 66.9°F (1951) | -13.0°F (1985) | 1.50 in (1979) |
| January 22 | 70.0°F (1986) | 1.9°F (1961) | 0.86 in (1987) |
| January 23 | 72.0°F (1967) | -13.0°F (1985) | 0.62 in (2006) |
| January 24 | 73.0°F (1967) | 0.0°F (1963) | 1.10 in (1979) |
| January 25 | 75.0°F (1950) | 3.0°F (1961) | 1.27 in (1978) |
| January 26 | 78.1°F (1950) | 3.9°F (1982) | 1.29 in (1978) |
| January 27 | 77.0°F (1950) | 0.0°F (1982) | 0.88 in (1967) |
| January 28 | 70.0°F (1949) | -4.0°F (1987) | 1.08 in (1998) |
| January 29 | 75.0°F (1975) | 1.9°F (1977) | 1.09 in (1990) |
| January 30 | 73.9°F (1914) | 6.1°F (1966) | 1.60 in (1966) |
| January 31 | 71.1°F (1916) | 6.1°F (1966) | 0.75 in (1949) |