Hourly Weather Forecast - Diamond Bar, CA

12 AM
52°F
0%
3mph
E
Hazy
Humidity
97%
Feels like
52°F
Dew Point
51°F
1 AM
52°F
0%
3mph
E
Foggy
Humidity
100%
Feels like
52°F
Dew Point
52°F
2 AM
51°F
0%
3mph
ENE
Foggy
Humidity
100%
Feels like
51°F
Dew Point
51°F
3 AM
51°F
0%
3mph
ENE
Foggy
Humidity
100%
Feels like
51°F
Dew Point
51°F
4 AM
50°F
0%
3mph
ENE
Foggy
Humidity
100%
Feels like
50°F
Dew Point
50°F
5 AM
50°F
0%
3mph
ENE
Foggy
Humidity
100%
Feels like
50°F
Dew Point
50°F
6 AM
51°F
0%
3mph
NE
Foggy
Humidity
100%
Feels like
51°F
Dew Point
51°F
6:52 AM
7 AM
54°F
0%
3mph
NE
Hazy
Humidity
94%
Feels like
54°F
Dew Point
52°F
8 AM
58°F
0%
3mph
ENE
Sunny
Humidity
86%
Feels like
58°F
Dew Point
53°F
9 AM
62°F
0%
3mph
SE
Sunny
Humidity
74%
Feels like
62°F
Dew Point
54°F
10 AM
66°F
0%
3mph
SSW
Sunny
Humidity
65%
Feels like
66°F
Dew Point
54°F
11 AM
69°F
0%
4mph
SW
Sunny
Humidity
58%
Feels like
69°F
Dew Point
54°F
12 PM
71°F
0%
4mph
SW
Sunny
Humidity
54%
Feels like
71°F
Dew Point
54°F
1 PM
72°F
0%
5mph
SW
Sunny
Humidity
53%
Feels like
72°F
Dew Point
54°F
2 PM
71°F
0%
6mph
SW
Sunny
Humidity
55%
Feels like
71°F
Dew Point
54°F
3 PM
68°F
0%
6mph
SW
Mostly Sunny
Humidity
61%
Feels like
68°F
Dew Point
54°F
4 PM
64°F
0%
6mph
SW
Mostly Sunny
Humidity
72%
Feels like
64°F
Dew Point
55°F
4:45 PM
5 PM
60°F
0%
5mph
SW
Mostly Clear
Humidity
86%
Feels like
60°F
Dew Point
56°F
6 PM
58°F
0%
4mph
WSW
Partly Cloudy
Humidity
93%
Feels like
58°F
Dew Point
56°F
7 PM
56°F
0%
3mph
WSW
Partly Cloudy
Humidity
97%
Feels like
56°F
Dew Point
56°F
8 PM
55°F
0%
2mph
SSW
Foggy
Humidity
100%
Feels like
55°F
Dew Point
55°F
9 PM
54°F
0%
2mph
SSE
Foggy
Humidity
100%
Feels like
54°F
Dew Point
54°F
10 PM
54°F
0%
2mph
SE
Foggy
Humidity
100%
Feels like
54°F
Dew Point
54°F
11 PM
53°F
0%
2mph
ESE
Foggy
Humidity
100%
Feels like
53°F
Dew Point
53°F

Rainfall and Snowfall Totals Through Thursday

Pineapple Express Slams Northwestern U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Wednesday's Weather Outlook

Today's Weather Outlook

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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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