Hourly Weather Forecast - Mattawa, WA

12 AM
46°F
30%
8mph
W
30% Chance Rain Showers
Humidity
76%
Feels like
43°F
Dew Point
39°F
1 AM
45°F
30%
7mph
WNW
30% Chance Rain Showers
Humidity
74%
Feels like
41°F
Dew Point
37°F
2 AM
43°F
30%
8mph
WNW
30% Chance Rain Showers
Humidity
71%
Feels like
39°F
Dew Point
35°F
3 AM
42°F
0%
9mph
WNW
Partly Cloudy
Humidity
68%
Feels like
36°F
Dew Point
32°F
4 AM
40°F
0%
8mph
WNW
Clear
Humidity
66%
Feels like
35°F
Dew Point
30°F
5 AM
38°F
0%
7mph
WNW
Mostly Clear
Humidity
66%
Feels like
33°F
Dew Point
28°F
6 AM
37°F
0%
7mph
W
Mostly Clear
Humidity
67%
Feels like
32°F
Dew Point
27°F
7 AM
37°F
0%
7mph
W
Mostly Clear
Humidity
66%
Feels like
31°F
Dew Point
26°F
7:40 AM
8 AM
37°F
0%
7mph
WSW
Mostly Sunny
Humidity
64%
Feels like
32°F
Dew Point
26°F
9 AM
39°F
0%
6mph
WSW
Sunny
Humidity
61%
Feels like
34°F
Dew Point
27°F
10 AM
41°F
0%
7mph
WSW
Sunny
Humidity
58%
Feels like
36°F
Dew Point
28°F
11 AM
43°F
0%
8mph
WSW
Sunny
Humidity
55%
Feels like
38°F
Dew Point
28°F
12 PM
44°F
0%
9mph
WSW
Sunny
Humidity
52%
Feels like
39°F
Dew Point
28°F
1 PM
45°F
0%
10mph
WSW
Sunny
Humidity
50%
Feels like
40°F
Dew Point
28°F
2 PM
45°F
0%
10mph
WSW
Sunny
Humidity
51%
Feels like
40°F
Dew Point
28°F
3 PM
44°F
0%
9mph
SW
Sunny
Humidity
55%
Feels like
39°F
Dew Point
29°F
4 PM
42°F
0%
9mph
SW
Sunny
Humidity
58%
Feels like
37°F
Dew Point
29°F
4:13 PM
5 PM
41°F
0%
8mph
SW
Clear
Humidity
62%
Feels like
36°F
Dew Point
29°F
6 PM
39°F
0%
8mph
SW
Clear
Humidity
67%
Feels like
34°F
Dew Point
29°F
7 PM
38°F
0%
7mph
SW
Clear
Humidity
71%
Feels like
33°F
Dew Point
29°F
8 PM
37°F
0%
6mph
SW
Clear
Humidity
73%
Feels like
32°F
Dew Point
29°F
9 PM
37°F
0%
5mph
SW
Clear
Humidity
74%
Feels like
32°F
Dew Point
29°F
10 PM
36°F
0%
5mph
SW
Clear
Humidity
75%
Feels like
32°F
Dew Point
29°F
11 PM
36°F
0%
5mph
SW
Clear
Humidity
76%
Feels like
32°F
Dew Point
29°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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