Hourly Weather Forecast - Diamond Bar, CA

1 AM
55°F
0%
7mph
E
Clear
Humidity
44%
Feels like
55°F
Dew Point
34°F
2 AM
55°F
0%
6mph
E
Clear
Humidity
46%
Feels like
55°F
Dew Point
34°F
3 AM
54°F
0%
6mph
E
Clear
Humidity
47%
Feels like
54°F
Dew Point
34°F
4 AM
53°F
0%
6mph
E
Clear
Humidity
47%
Feels like
53°F
Dew Point
34°F
5 AM
53°F
0%
6mph
E
Clear
Humidity
48%
Feels like
53°F
Dew Point
34°F
6 AM
54°F
0%
6mph
E
Clear
Humidity
46%
Feels like
54°F
Dew Point
34°F
6:44 AM
7 AM
57°F
0%
6mph
E
Sunny
Humidity
41%
Feels like
57°F
Dew Point
34°F
8 AM
62°F
0%
7mph
E
Sunny
Humidity
36%
Feels like
62°F
Dew Point
35°F
9 AM
68°F
0%
6mph
E
Sunny
Humidity
30%
Feels like
68°F
Dew Point
35°F
10 AM
72°F
0%
6mph
E
Sunny
Humidity
26%
Feels like
72°F
Dew Point
35°F
11 AM
76°F
0%
5mph
E
Sunny
Humidity
23%
Feels like
76°F
Dew Point
36°F
12 PM
79°F
0%
4mph
NNE
Sunny
Humidity
21%
Feels like
79°F
Dew Point
36°F
1 PM
81°F
0%
4mph
WNW
Sunny
Humidity
21%
Feels like
79°F
Dew Point
37°F
2 PM
81°F
0%
4mph
WNW
Sunny
Humidity
22%
Feels like
79°F
Dew Point
38°F
3 PM
78°F
0%
4mph
WNW
Sunny
Humidity
24%
Feels like
78°F
Dew Point
39°F
4 PM
75°F
0%
3mph
WNW
Sunny
Humidity
28%
Feels like
75°F
Dew Point
40°F
4:42 PM
5 PM
71°F
0%
4mph
N
Clear
Humidity
33%
Feels like
71°F
Dew Point
40°F
6 PM
68°F
0%
4mph
ENE
Clear
Humidity
36%
Feels like
68°F
Dew Point
40°F
7 PM
65°F
0%
4mph
ENE
Clear
Humidity
38%
Feels like
65°F
Dew Point
39°F
8 PM
63°F
0%
5mph
ENE
Clear
Humidity
39%
Feels like
63°F
Dew Point
38°F
9 PM
61°F
0%
5mph
E
Clear
Humidity
40%
Feels like
61°F
Dew Point
37°F
10 PM
60°F
0%
6mph
E
Clear
Humidity
39%
Feels like
60°F
Dew Point
35°F
11 PM
59°F
0%
6mph
E
Clear
Humidity
39%
Feels like
59°F
Dew Point
34°F

Rainfall Forecast for Northwest through Thursday

Persistent, Flooding Rain Impacts the Northwest

A fast-moving series of atmospheric rivers continue to drench the Pacific Northwest today through Thursday.

Snow and ice forecast through Thursday A.M.

Snow Barrels Across the Northern U.S.

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