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Diamond Bar weather
Current conditions and a 14-day forecast for Diamond Bar, United States. Looking for typical seasonal weather instead? See the historical climate averages.
Now
24°C
Clear sky · feels 24°C
Humidity
60%
relative humidity
Wind
18 km/h
10m wind speed
Chance of rain
1%
today
Next 24 hours in Diamond Bar
| Time | Conditions | Temp | Rain chance |
|---|---|---|---|
| 8pm | Clear sky | 24°C | 1% |
| 9pm | Clear sky | 23°C | 1% |
| 10pm | Clear sky | 21°C | 1% |
| 11pm | Clear sky | 20°C | 1% |
| 12am | Clear sky | 20°C | 1% |
| 1am | Clear sky | 20°C | 1% |
| 2am | Clear sky | 20°C | 1% |
| 3am | Clear sky | 20°C | 1% |
| 4am | Clear sky | 19°C | 1% |
| 5am | Clear sky | 20°C | 1% |
| 6am | Clear sky | 20°C | 1% |
| 7am | Clear sky | 22°C | 1% |
| 8am | Clear sky | 23°C | 1% |
| 9am | Clear sky | 25°C | 1% |
| 10am | Clear sky | 26°C | 1% |
| 11am | Clear sky | 29°C | 1% |
| 12pm | Clear sky | 30°C | 2% |
| 1pm | Clear sky | 30°C | 2% |
| 2pm | Clear sky | 30°C | 2% |
| 3pm | Clear sky | 30°C | 2% |
| 4pm | Clear sky | 30°C | 3% |
| 5pm | Clear sky | 29°C | 3% |
| 6pm | Clear sky | 28°C | 3% |
| 7pm | Clear sky | 26°C | 3% |
14-day forecast for Diamond Bar
| Day | Conditions | High / Low | Rain chance |
|---|---|---|---|
| Today | Partly cloudy | 35° / 20° | 1% |
| Fri, Jul 17 | Partly cloudy | 30° / 19° | 3% |
| Sat, Jul 18 | Mainly clear | 31° / 17° | 2% |
| Sun, Jul 19 | Overcast | 32° / 22° | 0% |
| Mon, Jul 20 | Partly cloudy | 33° / 22° | 2% |
| Tue, Jul 21 | Clear sky | 33° / 24° | 2% |
| Wed, Jul 22 | Clear sky | 35° / 24° | 5% |
| Thu, Jul 23 | Partly cloudy | 38° / 26° | 9% |
| Fri, Jul 24 | Mainly clear | 35° / 26° | 4% |
| Sat, Jul 25 | Overcast | 35° / 25° | 3% |
| Sun, Jul 26 | Overcast | 37° / 25° | 1% |
| Mon, Jul 27 | Clear sky | 37° / 26° | 0% |
| Tue, Jul 28 | Clear sky | 38° / 26° | 0% |
| Wed, Jul 29 | Clear sky | 36° / 26° | 3% |
About this forecast
- Source
- Open-Meteo, blending national weather-service models (incl. ECMWF and NOAA GFS)
- Conditions as of
- 8:00 PM local time
- Forecast point
- 34.000, -117.750, ~294 m elevation
- Updates
- Refreshed roughly hourly; cached up to 10 minutes on our side
Confidence narrows for the next day or two and widens further out — treat the back end of the 14-day range as a general trend, not a precise prediction. For long-term typical conditions instead of this live forecast, see the historical climate averages linked above.
Want more sun and moon detail for Diamond Bar? Use the sun calculator or moon calculator and search for Diamond Bar. For a live look at any other city, try the interactive weather tool.
Frequently asked questions
What's the weather like in Diamond Bar today?
Current conditions and today's forecast for Diamond Bar, United States are shown above, refreshed regularly through the day.
How accurate is a 14-day forecast?
A forecast is most reliable for the next 3-5 days. Beyond that, temperature and precipitation chances further out are a general trend rather than an exact prediction.
What is Diamond Bar's weather usually like?
For long-term averages — typical monthly temperatures and rainfall based on years of historical data — see Diamond Bar's climate page rather than this live forecast.