Hourly Weather Forecast - Mattawa, WA

12 AM
38°F
0%
4mph
SSE
Cloudy
Humidity
80%
Feels like
35°F
Dew Point
33°F
1 AM
39°F
0%
4mph
SSE
Cloudy
Humidity
80%
Feels like
35°F
Dew Point
33°F
2 AM
39°F
0%
4mph
SSE
Cloudy
Humidity
80%
Feels like
36°F
Dew Point
33°F
3 AM
39°F
10%
4mph
SE
Cloudy
Humidity
80%
Feels like
37°F
Dew Point
34°F
4 AM
40°F
30%
4mph
SE
30% Chance of Light Rain
Humidity
81%
Feels like
37°F
Dew Point
34°F
5 AM
40°F
30%
4mph
SE
30% Chance of Light Rain
Humidity
80%
Feels like
37°F
Dew Point
34°F
6 AM
40°F
30%
4mph
SE
30% Chance of Light Rain
Humidity
80%
Feels like
37°F
Dew Point
34°F
7 AM
40°F
40%
5mph
SSE
40% Chance of Light Rain
Humidity
79%
Feels like
36°F
Dew Point
34°F
7:39 AM
8 AM
40°F
50%
6mph
SE
50% Chance of Light Rain
Humidity
80%
Feels like
36°F
Dew Point
35°F
9 AM
40°F
50%
6mph
SE
50% Chance of Light Rain
Humidity
81%
Feels like
36°F
Dew Point
35°F
10 AM
41°F
40%
7mph
SE
40% Chance of Light Rain
Humidity
81%
Feels like
36°F
Dew Point
35°F
11 AM
41°F
50%
7mph
SE
50% Chance of Light Rain
Humidity
82%
Feels like
37°F
Dew Point
36°F
12 PM
42°F
50%
7mph
SE
50% Chance of Light Rain
Humidity
83%
Feels like
37°F
Dew Point
37°F
1 PM
43°F
50%
7mph
SE
50% Chance of Light Rain
Humidity
83%
Feels like
38°F
Dew Point
38°F
2 PM
44°F
40%
7mph
SE
40% Chance of Light Rain
Humidity
84%
Feels like
39°F
Dew Point
39°F
3 PM
44°F
40%
7mph
ESE
40% Chance of Light Rain
Humidity
85%
Feels like
40°F
Dew Point
40°F
4 PM
45°F
40%
6mph
SE
40% Chance of Light Rain
Humidity
86%
Feels like
41°F
Dew Point
41°F
4:12 PM
5 PM
46°F
50%
5mph
SE
50% Chance of Light Rain
Humidity
86%
Feels like
43°F
Dew Point
42°F
6 PM
47°F
40%
6mph
S
40% Chance of Light Rain
Humidity
86%
Feels like
44°F
Dew Point
43°F
7 PM
47°F
30%
8mph
SSW
30% Chance of Light Rain
Humidity
85%
Feels like
44°F
Dew Point
43°F
8 PM
48°F
40%
8mph
SW
40% Chance of Light Rain
Humidity
84%
Feels like
44°F
Dew Point
43°F
9 PM
49°F
40%
8mph
WSW
40% Chance of Light Rain
Humidity
81%
Feels like
45°F
Dew Point
43°F
10 PM
49°F
30%
8mph
W
30% Chance Rain Showers
Humidity
79%
Feels like
45°F
Dew Point
42°F
11 PM
48°F
30%
8mph
W
30% Chance Rain Showers
Humidity
77%
Feels like
44°F
Dew Point
41°F

Rainfall and Snowfall Totals Through Thursday

Flooding Rain, Heavy Snow and Winds Slam Northwest, North-Central U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Thursday's Weather Outlook

Thursday's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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