January weather in Mattawa, WA
The average temperature in Mattawa in January is 35.1°F (29.6°F–40.6°F). Average precipitation: 1.08 inches.
January is a winter month in Mattawa, and is cooler than the annual average of 56°F. Daily temperatures swing about 11°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 8h 45m. For travel, January is cold.
Avg High
40.6°F
Avg Low
29.6°F
Precipitation
1.08 in
Daylight
8h 45m
January records in Mattawa
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 60.1°F (2020) | -8.0°F (1979) | 0.30 in (1994) |
| January 2 | 60.1°F (2007) | 0.0°F (1978) | 0.62 in (1966) |
| January 3 | 62.1°F (1989) | 1.9°F (1993) | 0.20 in (2024) |
| January 4 | 60.1°F (1990) | 3.9°F (1974) | 0.40 in (2010) |
| January 5 | 59.0°F (1990) | -0.9°F (1959) | 0.22 in (2009) |
| January 6 | 66.0°F (2002) | -4.0°F (1982) | 0.31 in (1983) |
| January 7 | 66.9°F (1962) | -2.9°F (1979) | 0.33 in (1975) |
| January 8 | 64.0°F (1962) | -0.9°F (1974) | 0.65 in (2017) |
| January 9 | 61.0°F (1990) | -2.0°F (1974) | 0.23 in (1990) |
| January 10 | 60.1°F (1983) | 0.0°F (1980) | 0.38 in (1979) |
| January 11 | 61.0°F (2014) | 0.0°F (1963) | 0.35 in (2018) |
| January 12 | 60.1°F (1991) | 0.0°F (1963) | 0.34 in (2003) |
| January 13 | 64.9°F (2021) | -0.9°F (1963) | 0.33 in (1980) |
| January 14 | 63.0°F (1999) | 6.1°F (2017) | 0.55 in (1968) |
| January 15 | 61.0°F (1961) | 10.9°F (2017) | 0.63 in (1974) |
| January 16 | 66.9°F (2011) | 9.0°F (1957) | 0.53 in (1971) |
| January 17 | 61.0°F (2011) | 3.0°F (1957) | 0.62 in (2019) |
| January 18 | 62.1°F (1989) | 0.0°F (1960) | 0.37 in (1974) |
| January 19 | 64.0°F (1986) | 5.0°F (1960) | 0.40 in (2012) |
| January 20 | 64.9°F (1968) | 10.9°F (1962) | 0.31 in (2019) |
| January 21 | 62.1°F (1968) | 5.0°F (1957) | 0.20 in (2003) |
| January 22 | 55.9°F (1990) | 1.9°F (1962) | 0.75 in (1999) |
| January 23 | 62.1°F (2011) | -5.1°F (1969) | 24.05 in (1982) |
| January 24 | 59.0°F (1982) | 6.1°F (1957) | 0.29 in (1970) |
| January 25 | 59.0°F (1992) | 0.0°F (1957) | 0.55 in (1975) |
| January 26 | 66.0°F (2003) | -11.0°F (1957) | 0.60 in (1969) |
| January 27 | 62.1°F (1984) | 1.9°F (1979) | 0.15 in (2008) |
| January 28 | 60.1°F (1967) | -2.0°F (1969) | 0.45 in (1981) |
| January 29 | 63.0°F (2018) | -9.0°F (1957) | 0.45 in (1986) |
| January 30 | 66.9°F (1971) | -4.0°F (1957) | 0.50 in (2006) |
| January 31 | 71.1°F (1971) | -11.9°F (1996) | 0.53 in (1974) |