Lake Forest Weather History Illinois, 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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Fri 26 Jun, 2026 Weather in Lake Forest

Sunrise: 05:16 AM Sunset: 08:31 PM	Moonrise: 06:25 PM Moonset: 02:27 AM	Max: 18.5 °c	Min: 14.8 °c	Avg: 17.0 °c	Precip: 1.00 mm	Max Wind: 14.0 kph

	Fri 26 0:00 am	Fri 26 3:00 am	Fri 26 6:00 am	Fri 26 9:00 am	Fri 26 12:00 pm	Fri 26 3:00 pm	Fri 26 6:00 pm	Fri 26 9:00 pm
Icon
Temp	16.1°c	15.1°c	15.8°c	17.7°c	18.4°c	18.0°c	17.9°c	17.2°c
Wind	11.9 kmph	9.7 kmph	9.0 kmph	13.0 kmph	12.6 kmph	9.4 kmph	14.0 kmph	10.8 kmph
Precip	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.60 mm	0.00 mm	0.00 mm	0.00 mm
Cloud	1%	2%	1%	3%	82%	5%	13%	6%
Humidity	93%	91%	84%	79%	83%	77%	85%	89%
Pressure	1016 mb	1016 mb	1018 mb	1020 mb	1019 mb	1018 mb	1017 mb	1017 mb

Lake Forest Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	-2°C / 29°F	-7°C / 19°F	-4°C / 24°F	113 hours	55.18 mm / 2.17 In	8 days	1019 mb / 31 In
February	0°C / 32°F	-6°C / 22°F	-3°C / 27°F	117 hours	62.42 mm / 2.46 In	7 days	1019 mb / 31 In
March	6°C / 42°F	0°C / 32°F	3°C / 37°F	140 hours	95.48 mm / 3.76 In	7 days	1018 mb / 31 In
April	11°C / 51°F	4°C / 40°F	7°C / 45°F	137 hours	150.00 mm / 5.91 In	9 days	1014 mb / 30 In
May	16°C / 61°F	10°C / 50°F	13°C / 55°F	184 hours	152.94 mm / 6.02 In	10 days	1015 mb / 30 In
June	22°C / 72°F	16°C / 61°F	19°C / 66°F	215 hours	162.93 mm / 6.41 In	10 days	1013 mb / 30 In
July	26°C / 78°F	20°C / 67°F	23°C / 73°F	233 hours	118.71 mm / 4.67 In	8 days	1015 mb / 30 In
August	25°C / 78°F	19°C / 67°F	22°C / 72°F	240 hours	115.55 mm / 4.55 In	8 days	1015 mb / 30 In
September	22°C / 72°F	16°C / 61°F	19°C / 66°F	227 hours	87.91 mm / 3.46 In	6 days	1017 mb / 31 In
October	16°C / 60°F	10°C / 49°F	12°C / 54°F	170 hours	103.08 mm / 4.06 In	7 days	1016 mb / 30 In
November	8°C / 47°F	3°C / 37°F	5°C / 42°F	170 hours	73.61 mm / 2.90 In	5 days	1019 mb / 31 In
December	2°C / 36°F	-3°C / 27°F	0°C / 32°F	121 hours	65.89 mm / 2.59 In	6 days	1018 mb / 31 In

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