Hourly Weather Forecast - Arco, ID

12 AM
30°F
0%
6mph
WSW
Partly Cloudy
Humidity
83%
Feels like
23°F
Dew Point
25°F
1 AM
29°F
0%
6mph
WSW
Partly Cloudy
Humidity
81%
Feels like
23°F
Dew Point
24°F
2 AM
28°F
0%
6mph
W
Partly Cloudy
Humidity
79%
Feels like
22°F
Dew Point
23°F
3 AM
27°F
0%
5mph
W
Partly Cloudy
Humidity
79%
Feels like
21°F
Dew Point
22°F
4 AM
26°F
0%
5mph
W
Mostly Clear
Humidity
79%
Feels like
21°F
Dew Point
21°F
5 AM
25°F
0%
5mph
W
Mostly Clear
Humidity
79%
Feels like
20°F
Dew Point
20°F
6 AM
24°F
0%
4mph
WNW
Mostly Clear
Humidity
77%
Feels like
19°F
Dew Point
18°F
7 AM
25°F
0%
4mph
WNW
Mostly Clear
Humidity
74%
Feels like
19°F
Dew Point
18°F
7:58 AM
8 AM
27°F
0%
4mph
WNW
Mostly Sunny
Humidity
71%
Feels like
23°F
Dew Point
19°F
9 AM
32°F
0%
3mph
W
Mostly Sunny
Humidity
67%
Feels like
29°F
Dew Point
22°F
10 AM
37°F
0%
3mph
WSW
Mostly Sunny
Humidity
60%
Feels like
37°F
Dew Point
24°F
11 AM
40°F
0%
3mph
SW
Mostly Sunny
Humidity
52%
Feels like
40°F
Dew Point
24°F
12 PM
43°F
0%
4mph
SSW
Partly Cloudy
Humidity
49%
Feels like
41°F
Dew Point
25°F
1 PM
44°F
0%
5mph
S
Partly Cloudy
Humidity
48%
Feels like
42°F
Dew Point
26°F
2 PM
45°F
0%
5mph
S
Partly Cloudy
Humidity
49%
Feels like
42°F
Dew Point
27°F
3 PM
43°F
0%
5mph
S
Partly Cloudy
Humidity
53%
Feels like
40°F
Dew Point
27°F
4 PM
40°F
0%
4mph
SSW
Partly Cloudy
Humidity
59%
Feels like
38°F
Dew Point
27°F
4:56 PM
5 PM
37°F
0%
3mph
SW
Partly Cloudy
Humidity
63%
Feels like
37°F
Dew Point
25°F
6 PM
34°F
0%
2mph
WSW
Partly Cloudy
Humidity
67%
Feels like
34°F
Dew Point
24°F
7 PM
32°F
0%
2mph
NW
Mostly Clear
Humidity
69%
Feels like
32°F
Dew Point
23°F
8 PM
31°F
0%
4mph
NNW
Mostly Clear
Humidity
71%
Feels like
27°F
Dew Point
22°F
9 PM
30°F
0%
4mph
NNW
Mostly Clear
Humidity
70%
Feels like
26°F
Dew Point
21°F
10 PM
29°F
0%
4mph
N
Mostly Clear
Humidity
73%
Feels like
25°F
Dew Point
22°F
11 PM
28°F
0%
3mph
N
Mostly Clear
Humidity
75%
Feels like
25°F
Dew Point
22°F

Snow and ice forecast through Thursday A.M.

Snow Barrels Across the Northern U.S.

Low pressure will produce a swath of snow from Minnesota to Maine into Thursday.

Rainfall Forecast for Northwest through Thursday

Heavy, Flooding Rain Impacts the Northwest

Today's Weather Outlook

Today's Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

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

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide