Diamond Bar, CA Weather Forecast
Los Angeles County, California
Live radar, warnings and storm tracking for Diamond Bar, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Diamond Bar
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Diamond Bar, CA at a glance
Diamond Bar is home to about 52,041 people in Los Angeles County, across 15 square miles. It ranks 170th by population of 450 places in California with a forecast here. The nearest neighbour with its own forecast is Walnut, 3 miles away.
- County
- Los Angeles County
- Population
- 52,041 2023 est.
- Land area
- 15 sq mi
- People per sq mi
- 3,498
- Forecast point
- 34.0016°N, 117.8176°W
How well can the network see Diamond Bar?
The nearest Doppler radar is KSOX (Santa Ana Mountains, CA), to the SE. Its lowest scan passes about 890 ft above Diamond Bar. That is about as close as US radar coverage gets: low-level rotation and gust fronts over Diamond Bar show up clearly. Diamond Bar is closer to its radar than 89% of US cities.
The closest weather station is KPOC (La Verne/Brackett Fld). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Diamond Bar
- Walnut, CA3 mi
- Pomona, CA5 mi
- Brea, CA6 mi
- West Covina, CA6 mi
- Chino Hills, CA7 mi
- Covina, CA7 mi
- San Dimas, CA7 mi
- La Puente, CA8 mi
Elsewhere in California
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