Mattawa Weather Forecast
- 27
- 45
Increasing Clouds
- 26
- 40
Mostly Cloudy
- 28
- 41
Mostly Cloudy
- 31
- 44
Chance Rain/Snow
- 34
- 48
Rain Likely
- 33
- 49
Rain Likely
- 32
- 49
Slight Chance Rain
Today 18 Feb Moses Lake Area
Mostly sunny. Highs in the lower to mid 40s. West wind 5 to 10 Mph.
Tonight 18 Feb Moses Lake Area
Partly cloudy with a 20 percent chance of snow. Lows in the mid to upper 20s. South wind 5 to 10 Mph shifting to the east overnight.
Mattawa Temperature Statistics
February Temperature
Sunnyside Municipal Airport (28.6 miles)
Lowest 11 February, 2026
25.9 °FAverage February
39.8 °FHighest 1 February, 2026
56.5 °F
Climate (2021–Present)
Sunnyside Municipal Airport (28.6 miles)
Average Low 2021–2026
39 °FAverage 2021–2026
51.5 °FAverage High 2021–2026
63.6 °F