Oswego 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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Thu 18 Dec, 2025 Weather in Oswego

Sunrise: 07:16 AM Sunset: 04:25 PM	Moonrise: 06:21 AM Moonset: 03:00 PM	Max: 4.3 °c	Min: -0.6 °c	Avg: 2.2 °c	Precip: 0.00 mm	Max Wind: 40.7 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	0.9°c	2.9°c	4.1°c	4.3°c	3.2°c	1.8°c	0.5°c
Wind	23.0 kmph	24.5 kmph	27.4 kmph	32.8 kmph	40.7 kmph	27.4 kmph	16.2 kmph	28.1 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%	99%	100%	100%
Humidity	99%	99%	100%	100%	99%	96%	98%	98%
Pressure	1009 mb	1005 mb	1001 mb	1000 mb	1000 mb	1001 mb	1003 mb	1004 mb

Oswego Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	-1°C / 29°F	-8°C / 17°F	-5°C / 23°F	117 hours	54.44 mm / 2.14 In	8 days	1020 mb / 31 In
February	1°C / 34°F	-7°C / 20°F	-3°C / 27°F	121 hours	59.99 mm / 2.36 In	7 days	1019 mb / 31 In
March	9°C / 47°F	0°C / 32°F	4°C / 39°F	143 hours	89.73 mm / 3.53 In	7 days	1018 mb / 31 In
April	14°C / 58°F	5°C / 40°F	9°C / 49°F	139 hours	134.12 mm / 5.28 In	8 days	1014 mb / 30 In
May	21°C / 70°F	11°C / 52°F	16°C / 61°F	174 hours	146.13 mm / 5.75 In	11 days	1015 mb / 30 In
June	26°C / 79°F	16°C / 61°F	21°C / 70°F	208 hours	158.93 mm / 6.26 In	9 days	1013 mb / 30 In
July	28°C / 82°F	18°C / 65°F	23°C / 73°F	213 hours	118.05 mm / 4.65 In	8 days	1015 mb / 30 In
August	27°C / 81°F	17°C / 63°F	22°C / 72°F	225 hours	103.95 mm / 4.09 In	8 days	1015 mb / 30 In
September	24°C / 76°F	14°C / 57°F	19°C / 66°F	229 hours	81.11 mm / 3.19 In	6 days	1017 mb / 31 In
October	17°C / 62°F	8°C / 46°F	12°C / 54°F	178 hours	95.98 mm / 3.78 In	7 days	1016 mb / 30 In
November	9°C / 48°F	1°C / 34°F	5°C / 41°F	170 hours	70.85 mm / 2.79 In	5 days	1019 mb / 31 In
December	3°C / 37°F	-4°C / 25°F	-1°C / 31°F	126 hours	64.73 mm / 2.55 In	7 days	1019 mb / 31 In

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