December weather in Kittitas, WA
The average temperature in Kittitas in December is 27.7°F (20.3°F–35.0°F). Average precipitation: 1.45 inches.
December is a winter month in Kittitas, and is cooler than the annual average of 47.7°F. Daily temperatures swing about 14.7°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 8h 20m. For travel, December is cold.
Avg High
35.0°F
Avg Low
20.3°F
Precipitation
1.45 in
Daylight
8h 20m
December records in Kittitas
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 57.9°F (1912) | -11.0°F (1985) | 0.72 in (1975) |
| December 2 | 64.9°F (2021) | -5.1°F (1919) | 0.54 in (1938) |
| December 3 | 57.0°F (1927) | -8.0°F (1919) | 0.70 in (1902) |
| December 4 | 54.0°F (1932) | -4.0°F (1919) | 0.50 in (1974) |
| December 5 | 59.0°F (1900) | -4.0°F (1919) | 0.38 in (1922) |
| December 6 | 55.9°F (1936) | -4.0°F (1919) | 0.93 in (1923) |
| December 7 | 59.0°F (1938) | -2.9°F (1956) | 0.54 in (1985) |
| December 8 | 55.9°F (1938) | -2.0°F (1919) | 0.85 in (1971) |
| December 9 | 51.1°F (1928) | 0.0°F (1932) | 0.78 in (1933) |
| December 10 | 55.9°F (1975) | -4.0°F (1914) | 1.38 in (1987) |
| December 11 | 63.0°F (2025) | -8.0°F (1914) | 0.56 in (1995) |
| December 12 | 53.1°F (1976) | -31.0°F (1919) | 0.56 in (2010) |
| December 13 | 54.0°F (1917) | -27.9°F (1919) | 1.09 in (1897) |
| December 14 | 54.0°F (2025) | -18.9°F (1919) | 0.93 in (1977) |
| December 15 | 54.0°F (1939) | -13.0°F (1922) | 0.99 in (2006) |
| December 16 | 60.1°F (2025) | -17.0°F (1964) | 0.76 in (2002) |
| December 17 | 54.0°F (1999) | -23.1°F (1964) | 1.14 in (1961) |
| December 18 | 59.0°F (1936) | -18.9°F (1984) | 0.97 in (1917) |
| December 19 | 54.0°F (1900) | -17.0°F (1984) | 0.98 in (1895) |
| December 20 | 48.0°F (1934) | -20.9°F (1983) | 1.00 in (1925) |
| December 21 | 55.0°F (1933) | -24.0°F (1983) | 0.77 in (1955) |
| December 22 | 53.1°F (1899) | -27.9°F (1983) | 0.63 in (1964) |
| December 23 | 55.9°F (1899) | -27.0°F (1983) | 0.50 in (1920) |
| December 24 | 55.0°F (1899) | -6.0°F (1990) | 1.05 in (1902) |
| December 25 | 54.0°F (1899) | -6.0°F (1916) | 0.68 in (1933) |
| December 26 | 57.0°F (1967) | -7.1°F (2008) | 1.30 in (2024) |
| December 27 | 55.9°F (1980) | -9.0°F (1996) | 0.87 in (1965) |
| December 28 | 52.0°F (1967) | -9.9°F (1916) | 0.91 in (1996) |
| December 29 | 48.0°F (2011) | -16.1°F (1968) | 0.56 in (1912) |
| December 30 | 55.9°F (1893) | -24.0°F (1968) | 1.50 in (1937) |
| December 31 | 52.0°F (1958) | -18.9°F (1968) | 0.60 in (1922) |