Hourly Weather Forecast - Arco, ID

12 AM
26°F
0%
5mph
W
Partly Cloudy
Humidity
75%
Feels like
19°F
Dew Point
19°F
1 AM
24°F
0%
5mph
W
Partly Cloudy
Humidity
79%
Feels like
18°F
Dew Point
19°F
2 AM
22°F
0%
4mph
W
Mostly Cloudy
Humidity
84%
Feels like
16°F
Dew Point
18°F
3 AM
22°F
10%
4mph
W
Mostly Cloudy
Humidity
85%
Feels like
16°F
Dew Point
18°F
4 AM
22°F
0%
4mph
WNW
Cloudy
Humidity
84%
Feels like
16°F
Dew Point
18°F
5 AM
23°F
0%
5mph
WNW
Cloudy
Humidity
83%
Feels like
17°F
Dew Point
19°F
6 AM
24°F
0%
5mph
W
Cloudy
Humidity
78%
Feels like
18°F
Dew Point
18°F
7 AM
25°F
0%
5mph
W
Mostly Cloudy
Humidity
79%
Feels like
19°F
Dew Point
19°F
8 AM
28°F
10%
5mph
WSW
Mostly Cloudy
Humidity
78%
Feels like
23°F
Dew Point
22°F
8:00 AM
9 AM
34°F
0%
6mph
SW
Partly Cloudy
Humidity
76%
Feels like
29°F
Dew Point
27°F
10 AM
39°F
0%
7mph
SW
Mostly Sunny
Humidity
68%
Feels like
34°F
Dew Point
29°F
11 AM
44°F
0%
9mph
SW
Sunny
Humidity
57%
Feels like
39°F
Dew Point
30°F
12 PM
47°F
0%
11mph
SW
Sunny
Humidity
52%
Feels like
42°F
Dew Point
31°F
1 PM
50°F
0%
15mph
WSW
Sunny
Humidity
51%
Feels like
44°F
Dew Point
32°F
2 PM
50°F
0%
16mph
WSW
Sunny
Humidity
51%
Feels like
50°F
Dew Point
33°F
3 PM
48°F
0%
16mph
WSW
Sunny
Humidity
55%
Feels like
42°F
Dew Point
33°F
4 PM
44°F
0%
14mph
SW
Mostly Sunny
Humidity
61%
Feels like
37°F
Dew Point
31°F
4:57 PM
5 PM
40°F
0%
13mph
SW
Mostly Clear
Humidity
68%
Feels like
32°F
Dew Point
30°F
6 PM
36°F
0%
11mph
SW
Partly Cloudy
Humidity
73%
Feels like
28°F
Dew Point
29°F
7 PM
35°F
0%
11mph
SW
Mostly Cloudy
Humidity
76%
Feels like
27°F
Dew Point
28°F
8 PM
34°F
0%
10mph
SW
Cloudy
Humidity
78%
Feels like
26°F
Dew Point
28°F
9 PM
34°F
0%
10mph
SW
Mostly Cloudy
Humidity
82%
Feels like
26°F
Dew Point
29°F
10 PM
33°F
0%
10mph
SW
Partly Cloudy
Humidity
89%
Feels like
25°F
Dew Point
30°F
11 PM
32°F
0%
10mph
SW
Partly Cloudy
Humidity
91%
Feels like
23°F
Dew Point
29°F

Rainfall Totals Through Wednesday A.M.

Heavy Rain Returns to Deluge Pacific Northwest

Another atmospheric river will hit the Pacific Northwest with heavy rain and high winds.

Monday's Weather Outlook

Today'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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