Diamond Bar Weather History California, United States of America

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Past date: Past date must be from 1st Jan, 2009 onwards.

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Daily and hourly data from 1 Jan 2009 onwards.
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Wed 21 May, 2025 Weather in Diamond Bar

Sunrise: 05:46 AM Sunset: 07:51 PM	Moonrise: 02:11 AM Moonset: 01:57 PM	Max: 32.4 °c	Min: 18.6 °c	Avg: 24.7 °c	Precip: 0.00 mm	Max Wind: 18.0 kph

	Wed 21 0:00 am	Wed 21 3:00 am	Wed 21 6:00 am	Wed 21 9:00 am	Wed 21 12:00 pm	Wed 21 3:00 pm	Wed 21 6:00 pm	Wed 21 9:00 pm
Icon
Temp	20.9°c	19.1°c	19.8°c	25.7°c	31.3°c	31.7°c	27.1°c	22.2°c
Wind	2.9 kmph	2.5 kmph	1.8 kmph	3.6 kmph	11.9 kmph	18.0 kmph	15.5 kmph	7.9 kmph
Precip	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm
Cloud	0%	0%	0%	0%	0%	0%	0%	0%
Humidity	56%	58%	51%	37%	26%	23%	30%	44%
Pressure	1012 mb	1012 mb	1012 mb	1012 mb	1012 mb	1012 mb	1012 mb	1012 mb

Diamond Bar Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	18°C / 64°F	9°C / 47°F	13°C / 55°F	281 hours	68.42 mm / 2.69 In	4 days	1019 mb / 31 In
February	18°C / 65°F	9°C / 47°F	13°C / 55°F	251 hours	86.39 mm / 3.40 In	4 days	1017 mb / 31 In
March	19°C / 67°F	10°C / 50°F	14°C / 57°F	268 hours	67.42 mm / 2.65 In	4 days	1017 mb / 30 In
April	22°C / 72°F	12°C / 53°F	17°C / 62°F	301 hours	21.36 mm / 0.84 In	1 days	1014 mb / 30 In
May	24°C / 75°F	14°C / 57°F	18°C / 65°F	324 hours	7.57 mm / 0.30 In	1 days	1013 mb / 30 In
June	27°C / 81°F	17°C / 63°F	22°C / 71°F	340 hours	1.32 mm / 0.05 In	0 days	1011 mb / 30 In
July	31°C / 87°F	20°C / 68°F	25°C / 77°F	361 hours	2.49 mm / 0.10 In	1 days	1012 mb / 30 In
August	31°C / 88°F	21°C / 69°F	26°C / 78°F	358 hours	6.61 mm / 0.26 In	1 days	1012 mb / 30 In
September	30°C / 86°F	20°C / 68°F	24°C / 76°F	339 hours	5.49 mm / 0.22 In	1 days	1012 mb / 30 In
October	26°C / 79°F	16°C / 61°F	21°C / 69°F	316 hours	12.30 mm / 0.48 In	1 days	1014 mb / 30 In
November	22°C / 71°F	12°C / 53°F	16°C / 61°F	305 hours	22.49 mm / 0.89 In	1 days	1017 mb / 31 In
December	17°C / 63°F	9°C / 48°F	13°C / 55°F	278 hours	75.97 mm / 2.99 In	3 days	1018 mb / 31 In

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