Hourly Weather Forecast - Diamond Bar, CA

12 AM
50°F
0%
6mph
NE
Clear
Humidity
66%
Feels like
50°F
Dew Point
40°F
1 AM
49°F
0%
6mph
NE
Clear
Humidity
68%
Feels like
47°F
Dew Point
39°F
2 AM
49°F
0%
6mph
NE
Clear
Humidity
68%
Feels like
46°F
Dew Point
39°F
3 AM
48°F
0%
6mph
NE
Clear
Humidity
69%
Feels like
45°F
Dew Point
38°F
4 AM
47°F
0%
6mph
NE
Clear
Humidity
68%
Feels like
44°F
Dew Point
37°F
5 AM
47°F
0%
6mph
NE
Clear
Humidity
67%
Feels like
44°F
Dew Point
37°F
6 AM
48°F
0%
6mph
NE
Clear
Humidity
65%
Feels like
45°F
Dew Point
36°F
6:52 AM
7 AM
50°F
0%
5mph
NE
Sunny
Humidity
59%
Feels like
50°F
Dew Point
36°F
8 AM
55°F
0%
5mph
ENE
Sunny
Humidity
51%
Feels like
55°F
Dew Point
37°F

Snow Forecast through Sunday

Series of Weather Systems Cover Great Lakes, East in Snow

Two main areas of low pressure will produce snow in the Upper Midwest, Great Lakes and Eastern U.S.

Monday's Weather Outlook

Today's Weather Outlook

Weekly Drought Map for January 15, 2026

Active Weather Creates Mix of Improvements, Degradations to Drought Depiction

Vehicle driving in wintry conditions

Prepare Your Car for Cold Weather

(Image provided by NOAA)

Polar Vortex: What Is It?

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

Safety Tips For Icy Surfaces

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