Currently: 66 °F. Overcast. (Weather station: Hawthorne Municipal Airport, USA). See more current weatherCity of Diamond Bar Extended Forecast with high and low temperatures
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
59
62
65
68
71
74
77
80
83
86
89
92
95
Jun 29 – Jul 5
Lo:60
Fri, 4
Hi:80
9
Lo:61
Sat, 5
Hi:84
8
Jul 6 – Jul 12
Lo:62
Sun, 6
Hi:84
9
Lo:62
Mon, 7
Hi:83
9
Lo:62
Tue, 8
Hi:88
10
Lo:69
Wed, 9
Hi:92
9
Lo:70
Thu, 10
Hi:94
8
Lo:68
Fri, 11
Hi:82
10
Lo:69
Sat, 12
Hi:80
9
Jul 13 – Jul 19
Lo:68
Sun, 13
Hi:79
9
Lo:68
Mon, 14
Hi:79
10
Lo:68
Tue, 15
Hi:78
9
Lo:68
Wed, 16
Hi:78
10
Lo:68
Thu, 17
Hi:78
9
Lo:69
Fri, 18
Hi:79
10
2 Week Extended Forecast in City of Diamond Bar, California, USA
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| Conditions | Comfort | Precipitation | Sun | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day | Temperature | Weather | Feels Like | Wind | Humidity | Chance | Amount | UV | Sunrise | Sunset | ||
| Fri Jul 4 |  | 80 / 60 °F | Sunny. | 80 °F | 9 mph | ↑ | 49% | 0% | 0.00" | 10 (Very high) | 5:45 am | 8:06 pm |
| Sat Jul 5 | | 84 / 61 °F | Sunny. | 82 °F | 8 mph | ↑ | 37% | 0% | 0.00" | 10 (Very high) | 5:45 am | 8:06 pm |
| Sun Jul 6 | | 84 / 62 °F | Sunny. | 82 °F | 9 mph | ↑ | 32% | 0% | 0.00" | 10 (Very high) | 5:46 am | 8:05 pm |
| Mon Jul 7 | | 83 / 62 °F | Sunny. | 81 °F | 9 mph | ↑ | 37% | 0% | 0.00" | 10 (Very high) | 5:46 am | 8:05 pm |
| Tue Jul 8 | | 88 / 62 °F | Sunny. | 85 °F | 10 mph | ↑ | 33% | 0% | 0.00" | 10 (Very high) | 5:47 am | 8:05 pm |
| Wed Jul 9 |  | 92 / 69 °F | Broken clouds. | 87 °F | 9 mph | ↑ | 25% | 0% | 0.00" | 5 (Moderate) | 5:47 am | 8:05 pm |
| Thu Jul 10 | | 94 / 70 °F | Sunny. | 90 °F | 8 mph | ↑ | 25% | 0% | 0.00" | 10 (Very high) | 5:48 am | 8:04 pm |
| Fri Jul 11 | | 82 / 68 °F | Sunny. | 81 °F | 10 mph | ↑ | 34% | 2% | 0.00" | 10 (Very high) | 5:49 am | 8:04 pm |
| Sat Jul 12 | | 80 / 69 °F | Sunny. | 79 °F | 9 mph | ↑ | 30% | 3% | 0.00" | 10 (Very high) | 5:49 am | 8:04 pm |
| Sun Jul 13 |  | 79 / 68 °F | Scattered clouds. | 79 °F | 9 mph | ↑ | 38% | 5% | 0.00" | 7 (High) | 5:50 am | 8:03 pm |
| Mon Jul 14 | | 79 / 68 °F | Decreasing cloudiness. | 79 °F | 10 mph | ↑ | 37% | 6% | 0.00" | 10 (Very high) | 5:50 am | 8:03 pm |
| Tue Jul 15 | | 78 / 68 °F | Sunny. | 79 °F | 9 mph | ↑ | 33% | 4% | 0.00" | 10 (Very high) | 5:51 am | 8:02 pm |
| Wed Jul 16 | | 78 / 68 °F | Sunny. | 79 °F | 10 mph | ↑ | 36% | 3% | 0.00" | 7 (High) | 5:52 am | 8:02 pm |
| Thu Jul 17 | | 78 / 68 °F | Mostly sunny. | 78 °F | 9 mph | ↑ | 36% | 3% | 0.00" | 7 (High) | 5:52 am | 8:01 pm |
| Fri Jul 18 | | 79 / 69 °F | Sunny. | 79 °F | 10 mph | ↑ | 38% | 3% | 0.00" | 7 (High) | 5:53 am | 8:01 pm |
| * Updated Thursday, July 3, 2025 8:24:13 pm City of Diamond Bar time - Weather by CustomWeather, © 2025 | ||||||||||||