Hourly Weather Forecast - Mattawa, WA

12 AM
37°F
10%
4mph
SW
Mostly Cloudy
Humidity
85%
Feels like
33°F
Dew Point
33°F
1 AM
37°F
10%
4mph
SW
Mostly Cloudy
Humidity
84%
Feels like
33°F
Dew Point
32°F
2 AM
36°F
10%
4mph
SW
Mostly Cloudy
Humidity
83%
Feels like
33°F
Dew Point
32°F
3 AM
36°F
10%
4mph
SW
Mostly Cloudy
Humidity
84%
Feels like
33°F
Dew Point
32°F
4 AM
36°F
10%
4mph
SW
Mostly Cloudy
Humidity
84%
Feels like
33°F
Dew Point
32°F
5 AM
35°F
10%
4mph
SW
Mostly Cloudy
Humidity
85%
Feels like
32°F
Dew Point
31°F
6 AM
35°F
10%
4mph
SW
Mostly Cloudy
Humidity
86%
Feels like
31°F
Dew Point
31°F
7 AM
35°F
30%
4mph
SW
30% Chance of Light Rain
Humidity
86%
Feels like
31°F
Dew Point
31°F
7:41 AM
8 AM
36°F
30%
4mph
SW
30% Chance of Light Rain
Humidity
85%
Feels like
32°F
Dew Point
32°F
9 AM
37°F
30%
4mph
SSW
30% Chance Rain Showers
Humidity
83%
Feels like
34°F
Dew Point
33°F
10 AM
39°F
30%
5mph
SSW
30% Chance Rain Showers
Humidity
80%
Feels like
36°F
Dew Point
33°F
11 AM
41°F
30%
5mph
SSW
30% Chance of Light Rain
Humidity
75%
Feels like
38°F
Dew Point
34°F
12 PM
43°F
10%
6mph
SSW
Cloudy
Humidity
70%
Feels like
40°F
Dew Point
34°F
1 PM
45°F
10%
6mph
S
Cloudy
Humidity
67%
Feels like
41°F
Dew Point
34°F
2 PM
44°F
10%
6mph
S
Cloudy
Humidity
67%
Feels like
41°F
Dew Point
34°F
3 PM
43°F
10%
6mph
S
Cloudy
Humidity
70%
Feels like
40°F
Dew Point
34°F
4 PM
42°F
10%
6mph
SSW
Cloudy
Humidity
73%
Feels like
39°F
Dew Point
34°F
4:14 PM
5 PM
41°F
10%
6mph
SSW
Mostly Cloudy
Humidity
76%
Feels like
37°F
Dew Point
34°F
6 PM
40°F
10%
6mph
SSW
Partly Cloudy
Humidity
78%
Feels like
35°F
Dew Point
34°F
7 PM
39°F
10%
6mph
SSW
Partly Cloudy
Humidity
80%
Feels like
34°F
Dew Point
33°F
8 PM
38°F
10%
6mph
SSW
Partly Cloudy
Humidity
81%
Feels like
33°F
Dew Point
33°F
9 PM
38°F
20%
7mph
SSW
Cloudy
Humidity
82%
Feels like
33°F
Dew Point
33°F
10 PM
38°F
10%
7mph
SSW
Cloudy
Humidity
82%
Feels like
32°F
Dew Point
32°F
11 PM
37°F
10%
6mph
SW
Cloudy
Humidity
81%
Feels like
32°F
Dew Point
32°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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