Summit 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.
Yearly Monthly Averages
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Fri 26 Jun, 2026 Weather in Summit

Sunrise: 05:18 AM Sunset: 08:30 PM	Moonrise: 06:23 PM Moonset: 02:29 AM	Max: 22.7 °c	Min: 15.1 °c	Avg: 18.5 °c	Precip: 0.04 mm	Max Wind: 13.7 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	17.4°c	16.4°c	16.4°c	18.2°c	19.1°c	20.6°c	21.9°c	18.8°c
Wind	10.4 kmph	7.2 kmph	7.2 kmph	13.7 kmph	11.2 kmph	5.4 kmph	11.9 kmph	9.0 kmph
Precip	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.02 mm	0.01 mm	0.00 mm	0.00 mm
Cloud	1%	0%	0%	1%	77%	88%	3%	2%
Humidity	92%	92%	91%	73%	85%	76%	64%	84%
Pressure	1015 mb	1016 mb	1018 mb	1019 mb	1018 mb	1018 mb	1016 mb	1017 mb

Summit Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	-1°C / 30°F	-7°C / 19°F	-4°C / 25°F	111 hours	53.95 mm / 2.12 In	8 days	1019 mb / 31 In
February	1°C / 34°F	-6°C / 22°F	-2°C / 28°F	111 hours	59.00 mm / 2.32 In	7 days	1019 mb / 31 In
March	8°C / 46°F	0°C / 33°F	4°C / 39°F	142 hours	92.44 mm / 3.64 In	7 days	1018 mb / 31 In
April	13°C / 56°F	5°C / 41°F	9°C / 48°F	142 hours	156.40 mm / 6.16 In	9 days	1014 mb / 30 In
May	19°C / 66°F	11°C / 52°F	15°C / 59°F	184 hours	134.94 mm / 5.31 In	9 days	1015 mb / 30 In
June	25°C / 77°F	17°C / 62°F	21°C / 69°F	220 hours	150.51 mm / 5.93 In	9 days	1013 mb / 30 In
July	27°C / 81°F	20°C / 67°F	24°C / 74°F	230 hours	112.83 mm / 4.44 In	8 days	1015 mb / 30 In
August	27°C / 81°F	19°C / 67°F	23°C / 73°F	243 hours	103.48 mm / 4.07 In	8 days	1015 mb / 30 In
September	24°C / 75°F	16°C / 61°F	20°C / 68°F	230 hours	76.74 mm / 3.02 In	6 days	1017 mb / 31 In
October	17°C / 62°F	10°C / 49°F	13°C / 55°F	182 hours	105.74 mm / 4.16 In	8 days	1016 mb / 30 In
November	9°C / 48°F	3°C / 37°F	6°C / 42°F	171 hours	72.80 mm / 2.87 In	5 days	1019 mb / 31 In
December	3°C / 37°F	-3°C / 27°F	0°C / 32°F	118 hours	70.55 mm / 2.78 In	7 days	1019 mb / 31 In

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