Fullerton 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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Thu 13 Aug, 2026 Weather in Fullerton

Sunrise: 06:12 AM Sunset: 07:40 PM	Moonrise: 06:58 AM Moonset: 08:19 PM	Max: 29.6 °c	Min: 20.7 °c	Avg: 23.5 °c	Precip: 0.00 mm	Max Wind: 17.3 kph

	Thu 13 0:00 am	Thu 13 3:00 am	Thu 13 6:00 am	Thu 13 9:00 am	Thu 13 12:00 pm	Thu 13 3:00 pm	Thu 13 6:00 pm	Thu 13 9:00 pm
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Temp	20.9°c	20.7°c	21.4°c	22.8°c	28.6°c	27.5°c	24.3°c	21.1°c
Wind	8.6 kmph	5.8 kmph	5.4 kmph	8.3 kmph	11.2 kmph	16.6 kmph	13.7 kmph	10.8 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	99%	61%	100%	96%	12%	4%	15%	18%
Humidity	81%	81%	78%	74%	58%	54%	70%	80%
Pressure	1012 mb	1012 mb	1013 mb	1014 mb	1013 mb	1012 mb	1013 mb	1014 mb

Fullerton Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	20°C / 67°F	10°C / 49°F	14°C / 57°F	275 hours	65.51 mm / 2.58 In	3 days	1019 mb / 31 In
February	20°C / 67°F	10°C / 50°F	14°C / 58°F	245 hours	75.11 mm / 2.96 In	3 days	1017 mb / 31 In
March	21°C / 69°F	11°C / 52°F	15°C / 60°F	269 hours	55.13 mm / 2.17 In	3 days	1017 mb / 30 In
April	22°C / 72°F	13°C / 55°F	17°C / 63°F	287 hours	17.37 mm / 0.68 In	1 days	1015 mb / 30 In
May	23°C / 73°F	14°C / 58°F	18°C / 65°F	293 hours	6.16 mm / 0.24 In	1 days	1013 mb / 30 In
June	26°C / 79°F	16°C / 62°F	21°C / 70°F	310 hours	1.45 mm / 0.06 In	0 days	1012 mb / 30 In
July	29°C / 84°F	19°C / 66°F	23°C / 74°F	330 hours	1.89 mm / 0.07 In	0 days	1013 mb / 30 In
August	30°C / 86°F	20°C / 68°F	24°C / 76°F	354 hours	4.87 mm / 0.19 In	0 days	1012 mb / 30 In
September	29°C / 85°F	20°C / 67°F	24°C / 75°F	328 hours	4.44 mm / 0.17 In	0 days	1012 mb / 30 In
October	26°C / 79°F	17°C / 62°F	21°C / 70°F	308 hours	13.46 mm / 0.53 In	1 days	1014 mb / 30 In
November	23°C / 73°F	13°C / 55°F	17°C / 63°F	293 hours	30.25 mm / 1.19 In	2 days	1017 mb / 31 In
December	19°C / 66°F	10°C / 50°F	14°C / 57°F	269 hours	72.88 mm / 2.87 In	3 days	1018 mb / 31 In

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