Hourly Weather Forecast - Diamond Bar, CA

12 AM
61°F
0%
5mph
NE
Clear
Humidity
34%
Feels like
61°F
Dew Point
33°F
1 AM
60°F
0%
5mph
ENE
Clear
Humidity
35%
Feels like
60°F
Dew Point
33°F
2 AM
59°F
0%
5mph
ENE
Clear
Humidity
35%
Feels like
59°F
Dew Point
32°F
3 AM
59°F
0%
5mph
ENE
Clear
Humidity
34%
Feels like
59°F
Dew Point
31°F
4 AM
58°F
0%
5mph
ENE
Clear
Humidity
34%
Feels like
58°F
Dew Point
30°F
5 AM
57°F
0%
5mph
ENE
Clear
Humidity
35%
Feels like
57°F
Dew Point
30°F
6 AM
57°F
0%
5mph
ENE
Clear
Humidity
35%
Feels like
57°F
Dew Point
30°F
6:49 AM
7 AM
59°F
0%
5mph
ENE
Mostly Sunny
Humidity
35%
Feels like
59°F
Dew Point
31°F
8 AM
63°F
0%
5mph
ENE
Sunny
Humidity
31%
Feels like
63°F
Dew Point
32°F
9 AM
68°F
0%
4mph
E
Sunny
Humidity
26%
Feels like
68°F
Dew Point
32°F
10 AM
73°F
0%
4mph
E
Sunny
Humidity
22%
Feels like
73°F
Dew Point
32°F
11 AM
77°F
0%
4mph
SSE
Sunny
Humidity
19%
Feels like
77°F
Dew Point
31°F
12 PM
79°F
0%
4mph
SW
Sunny
Humidity
17%
Feels like
79°F
Dew Point
31°F
1 PM
80°F
0%
5mph
SW
Sunny
Humidity
17%
Feels like
80°F
Dew Point
31°F
2 PM
79°F
0%
5mph
WSW
Sunny
Humidity
18%
Feels like
79°F
Dew Point
33°F
3 PM
77°F
0%
5mph
WSW
Sunny
Humidity
21%
Feels like
77°F
Dew Point
34°F
4 PM
74°F
0%
5mph
WSW
Sunny
Humidity
26%
Feels like
74°F
Dew Point
37°F
4:43 PM
5 PM
70°F
0%
4mph
WSW
Clear
Humidity
36%
Feels like
70°F
Dew Point
42°F
6 PM
67°F
0%
4mph
WSW
Clear
Humidity
43%
Feels like
67°F
Dew Point
44°F
7 PM
65°F
0%
3mph
WSW
Clear
Humidity
47%
Feels like
65°F
Dew Point
44°F
8 PM
63°F
0%
4mph
N
Clear
Humidity
49%
Feels like
63°F
Dew Point
44°F
9 PM
62°F
0%
4mph
NE
Clear
Humidity
50%
Feels like
62°F
Dew Point
43°F
10 PM
60°F
0%
4mph
NE
Clear
Humidity
50%
Feels like
60°F
Dew Point
42°F
11 PM
59°F
0%
5mph
NE
Mostly Clear
Humidity
51%
Feels like
59°F
Dew Point
41°F

Snowfall forecast through Saturday A.M.

More Snow Across the Northern U.S. into the Midwest

The parade of snow will continue across the northern U.S. and Midwest through the end of the week.

Rainfall Forecast for Northwest through Friday A.M.

Rains Finally Easing Across 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

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Outdoor Sports Guide