Collinsville September Weather Averages Illinois, United States of America

September Weather Averages for Collinsville

High Temp	27°C	80°F
Low Temp	16°C	61°F
Avg Temp	21°C	70°F
Sunshine Hours	237 hours
Rainfall	98.72 mm	3.89 In
Rain days	6 days
Pressure	1016 mb	30 In

Collinsville September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	26°C / 78°F	16°C / 60°F	20°C / 68°F	236 hours	233.23 mm / 9.18 In	10 days	1018 mb / 31 In
2009	26°C / 79°F	15°C / 59°F	20°C / 68°F	264 hours	84.51 mm / 3.33 In	7 days	1017 mb / 31 In
2010	26°C / 79°F	16°C / 60°F	21°C / 69°F	266 hours	127.56 mm / 5.02 In	11 days	1015 mb / 30 In
2011	23°C / 73°F	14°C / 56°F	18°C / 64°F	227 hours	140.01 mm / 5.51 In	7 days	1016 mb / 30 In
2012	24°C / 75°F	15°C / 59°F	19°C / 66°F	206 hours	213.78 mm / 8.42 In	9 days	1016 mb / 30 In
2013	28°C / 82°F	16°C / 61°F	22°C / 71°F	280 hours	39.59 mm / 1.56 In	6 days	1015 mb / 30 In
2014	25°C / 77°F	15°C / 58°F	20°C / 67°F	216 hours	72.71 mm / 2.86 In	6 days	1018 mb / 31 In
2015	27°C / 81°F	17°C / 63°F	22°C / 71°F	206 hours	66.68 mm / 2.63 In	5 days	1017 mb / 31 In
2016	26°C / 79°F	17°C / 63°F	22°C / 71°F	247 hours	207.47 mm / 8.17 In	10 days	1017 mb / 31 In
2017	27°C / 81°F	17°C / 62°F	22°C / 71°F	267 hours	35.67 mm / 1.40 In	4 days	1017 mb / 31 In
2018	27°C / 80°F	18°C / 65°F	22°C / 72°F	223 hours	136.27 mm / 5.36 In	7 days	1018 mb / 31 In
2019	29°C / 83°F	19°C / 66°F	24°C / 74°F	268 hours	47.22 mm / 1.86 In	7 days	1017 mb / 30 In
2020	25°C / 77°F	16°C / 61°F	20°C / 68°F	222 hours	53.80 mm / 2.12 In	5 days	1017 mb / 31 In
2021	29°C / 84°F	18°C / 64°F	23°C / 73°F	227 hours	53.80 mm / 2.12 In	5 days	1015 mb / 30 In
2022	27°C / 81°F	16°C / 61°F	21°C / 70°F	241 hours	62.80 mm / 2.47 In	5 days	1017 mb / 30 In
2023	31°C / 88°F	15°C / 59°F	23°C / 73°F	230 hours	81.09 mm / 3.19 In	3 days	1016 mb / 30 In
2024	27°C / 81°F	16°C / 61°F	22°C / 71°F	208 hours	156.56 mm / 6.16 In	4 days	1016 mb / 30 In

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