Romeoville 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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Thu 18 Dec, 2025 Weather in Romeoville

Sunrise: 07:15 AM Sunset: 04:24 PM	Moonrise: 06:20 AM Moonset: 02:59 PM	Max: 4.5 °c	Min: -0.3 °c	Avg: 2.2 °c	Precip: 0.00 mm	Max Wind: 36.4 kph

	Thu 18 0:00 am	Thu 18 3:00 am	Thu 18 6:00 am	Thu 18 9:00 am	Thu 18 12:00 pm	Thu 18 3:00 pm	Thu 18 6:00 pm	Thu 18 9:00 pm
Icon
Temp	0.1°c	1.0°c	3.0°c	4.2°c	4.5°c	2.9°c	1.8°c	0.3°c
Wind	20.9 kmph	22.7 kmph	24.8 kmph	29.2 kmph	36.4 kmph	28.8 kmph	17.3 kmph	23.4 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	100%	100%	100%	100%	100%	100%	100%	100%
Humidity	99%	99%	100%	100%	100%	97%	98%	98%
Pressure	1009 mb	1005 mb	1001 mb	1000 mb	1000 mb	1001 mb	1003 mb	1004 mb

Romeoville Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	-1°C / 30°F	-8°C / 18°F	-5°C / 24°F	117 hours	55.41 mm / 2.18 In	8 days	1020 mb / 31 In
February	1°C / 34°F	-7°C / 20°F	-3°C / 27°F	121 hours	62.99 mm / 2.48 In	7 days	1019 mb / 31 In
March	8°C / 47°F	0°C / 32°F	4°C / 39°F	142 hours	93.50 mm / 3.68 In	8 days	1018 mb / 31 In
April	14°C / 58°F	5°C / 41°F	9°C / 49°F	138 hours	137.81 mm / 5.43 In	8 days	1014 mb / 30 In
May	21°C / 69°F	11°C / 52°F	16°C / 61°F	176 hours	147.06 mm / 5.79 In	10 days	1015 mb / 30 In
June	26°C / 79°F	17°C / 62°F	21°C / 70°F	209 hours	158.43 mm / 6.24 In	10 days	1013 mb / 30 In
July	28°C / 82°F	19°C / 66°F	23°C / 74°F	219 hours	123.30 mm / 4.85 In	9 days	1015 mb / 30 In
August	27°C / 81°F	18°C / 65°F	23°C / 73°F	230 hours	107.75 mm / 4.24 In	8 days	1015 mb / 30 In
September	24°C / 76°F	15°C / 59°F	19°C / 67°F	225 hours	86.11 mm / 3.39 In	6 days	1017 mb / 31 In
October	17°C / 62°F	8°C / 47°F	12°C / 54°F	175 hours	101.66 mm / 4.00 In	7 days	1016 mb / 30 In
November	9°C / 48°F	1°C / 35°F	5°C / 41°F	169 hours	70.34 mm / 2.77 In	5 days	1019 mb / 31 In
December	3°C / 37°F	-3°C / 26°F	0°C / 31°F	124 hours	65.18 mm / 2.57 In	7 days	1019 mb / 31 In

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