Mount Vernon Weather History Illinois, United States of America

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Daily and hourly data from 1 Jan 2009 onwards.
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Thu 13 Aug, 2026 Weather in Mount Vernon

Sunrise: 06:08 AM Sunset: 07:52 PM	Moonrise: 06:50 AM Moonset: 08:24 PM	Max: 33.4 °c	Min: 21.2 °c	Avg: 28.0 °c	Precip: 2.60 mm	Max Wind: 13.7 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	27.6°c	26.1°c	21.2°c	24.7°c	30.6°c	33.0°c	32.0°c	27.7°c
Wind	6.8 kmph	4.3 kmph	8.6 kmph	13.3 kmph	6.5 kmph	8.3 kmph	10.8 kmph	10.8 kmph
Precip	0.00 mm	0.00 mm	0.15 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm
Cloud	0%	0%	80%	32%	34%	30%	19%	17%
Humidity	69%	77%	95%	88%	66%	58%	70%	84%
Pressure	1011 mb	1010 mb	1011 mb	1013 mb	1013 mb	1011 mb	1011 mb	1012 mb

Mount Vernon Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	4°C / 39°F	-4°C / 25°F	0°C / 32°F	149 hours	89.95 mm / 3.54 In	7 days	1021 mb / 31 In
February	7°C / 44°F	-2°C / 29°F	2°C / 36°F	134 hours	99.73 mm / 3.93 In	7 days	1020 mb / 31 In
March	13°C / 56°F	4°C / 39°F	8°C / 47°F	160 hours	122.34 mm / 4.82 In	8 days	1018 mb / 31 In
April	19°C / 65°F	9°C / 48°F	14°C / 56°F	168 hours	203.35 mm / 8.01 In	8 days	1015 mb / 30 In
May	24°C / 74°F	14°C / 58°F	19°C / 66°F	173 hours	182.29 mm / 7.18 In	10 days	1015 mb / 30 In
June	29°C / 84°F	19°C / 67°F	24°C / 75°F	214 hours	136.27 mm / 5.36 In	8 days	1014 mb / 30 In
July	31°C / 87°F	21°C / 70°F	26°C / 78°F	220 hours	121.28 mm / 4.77 In	9 days	1015 mb / 30 In
August	30°C / 85°F	20°C / 67°F	24°C / 76°F	241 hours	103.24 mm / 4.06 In	8 days	1015 mb / 30 In
September	27°C / 80°F	16°C / 62°F	21°C / 70°F	236 hours	101.13 mm / 3.98 In	5 days	1017 mb / 30 In
October	20°C / 68°F	10°C / 50°F	15°C / 59°F	223 hours	117.56 mm / 4.63 In	6 days	1017 mb / 31 In
November	12°C / 54°F	4°C / 39°F	8°C / 46°F	204 hours	105.79 mm / 4.16 In	5 days	1020 mb / 31 In
December	7°C / 45°F	0°C / 32°F	3°C / 38°F	159 hours	111.50 mm / 4.39 In	7 days	1020 mb / 31 In

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