Oak Forest September Weather Averages Illinois, United States of America

September Weather Averages for Oak Forest

High Temp	24°C	76°F
Low Temp	15°C	59°F
Avg Temp	19°C	67°F
Sunshine Hours	228 hours
Rainfall	76.16 mm	3.00 In
Rain days	6 days
Pressure	1017 mb	31 In

Oak Forest September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	24°C / 75°F	15°C / 59°F	19°C / 66°F	222 hours	227.37 mm / 8.95 In	8 days	1018 mb / 31 In
2009	23°C / 74°F	14°C / 58°F	19°C / 66°F	230 hours	26.60 mm / 1.05 In	3 days	1018 mb / 31 In
2010	23°C / 74°F	14°C / 57°F	18°C / 65°F	246 hours	115.70 mm / 4.56 In	10 days	1015 mb / 30 In
2011	20°C / 69°F	13°C / 55°F	17°C / 62°F	185 hours	113.60 mm / 4.47 In	11 days	1015 mb / 30 In
2012	22°C / 72°F	13°C / 56°F	18°C / 64°F	245 hours	48.30 mm / 1.90 In	5 days	1016 mb / 30 In
2013	24°C / 76°F	15°C / 59°F	19°C / 67°F	236 hours	32.09 mm / 1.26 In	4 days	1016 mb / 30 In
2014	23°C / 73°F	13°C / 55°F	18°C / 64°F	252 hours	94.57 mm / 3.72 In	5 days	1018 mb / 31 In
2015	25°C / 77°F	16°C / 61°F	20°C / 68°F	196 hours	88.80 mm / 3.50 In	6 days	1018 mb / 31 In
2016	24°C / 76°F	17°C / 62°F	20°C / 69°F	211 hours	86.17 mm / 3.39 In	12 days	1017 mb / 31 In
2017	26°C / 78°F	17°C / 62°F	21°C / 70°F	295 hours	30.46 mm / 1.20 In	4 days	1017 mb / 31 In
2018	25°C / 77°F	17°C / 62°F	21°C / 69°F	209 hours	65.02 mm / 2.56 In	8 days	1019 mb / 31 In
2019	25°C / 78°F	18°C / 64°F	21°C / 70°F	202 hours	157.22 mm / 6.19 In	13 days	1017 mb / 30 In
2020	23°C / 73°F	15°C / 59°F	19°C / 66°F	223 hours	94.33 mm / 3.71 In	6 days	1018 mb / 31 In
2021	26°C / 79°F	17°C / 62°F	21°C / 70°F	273 hours	72.00 mm / 2.83 In	5 days	1015 mb / 30 In
2022	25°C / 77°F	15°C / 59°F	20°C / 67°F	213 hours	78.00 mm / 3.07 In	5 days	1017 mb / 31 In
2023	27°C / 81°F	15°C / 58°F	20°C / 68°F	198 hours	97.01 mm / 3.82 In	3 days	1017 mb / 31 In
2024	27°C / 80°F	16°C / 61°F	21°C / 70°F	241 hours	18.77 mm / 0.74 In	1 days	1017 mb / 31 In

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