Saint Charles September Weather Averages Missouri, United States of America

September Weather Averages for Saint Charles

High Temp	27°C	81°F
Low Temp	16°C	61°F
Avg Temp	21°C	71°F
Sunshine Hours	244 hours
Rainfall	94.69 mm	3.73 In
Rain days	5 days
Pressure	1016 mb	30 In

Saint Charles September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2009	26°C / 78°F	15°C / 59°F	20°C / 68°F	274 hours	105.57 mm / 4.16 In	5 days	1017 mb / 31 In
2010	26°C / 79°F	15°C / 60°F	20°C / 69°F	277 hours	131.55 mm / 5.18 In	6 days	1015 mb / 30 In
2011	23°C / 73°F	13°C / 56°F	18°C / 64°F	237 hours	134.95 mm / 5.31 In	7 days	1016 mb / 30 In
2012	25°C / 76°F	15°C / 58°F	19°C / 67°F	210 hours	123.91 mm / 4.88 In	8 days	1016 mb / 30 In
2013	28°C / 83°F	16°C / 61°F	22°C / 71°F	285 hours	50.50 mm / 1.99 In	4 days	1015 mb / 30 In
2014	26°C / 78°F	14°C / 58°F	20°C / 67°F	218 hours	75.22 mm / 2.96 In	6 days	1018 mb / 31 In
2015	28°C / 82°F	17°C / 63°F	22°C / 71°F	221 hours	49.30 mm / 1.94 In	3 days	1017 mb / 31 In
2016	27°C / 81°F	17°C / 63°F	22°C / 71°F	255 hours	159.11 mm / 6.26 In	6 days	1017 mb / 31 In
2017	28°C / 83°F	17°C / 63°F	23°C / 73°F	280 hours	24.70 mm / 0.97 In	3 days	1017 mb / 31 In
2018	28°C / 82°F	18°C / 65°F	23°C / 73°F	233 hours	127.87 mm / 5.03 In	7 days	1017 mb / 31 In
2019	29°C / 85°F	19°C / 67°F	24°C / 75°F	257 hours	45.69 mm / 1.80 In	8 days	1016 mb / 30 In
2020	26°C / 79°F	16°C / 61°F	21°C / 69°F	227 hours	35.76 mm / 1.41 In	4 days	1017 mb / 31 In
2021	30°C / 85°F	18°C / 64°F	23°C / 74°F	247 hours	44.60 mm / 1.76 In	3 days	1015 mb / 30 In
2022	28°C / 83°F	16°C / 62°F	22°C / 71°F	250 hours	30.10 mm / 1.19 In	5 days	1016 mb / 30 In
2023	31°C / 88°F	15°C / 60°F	23°C / 73°F	262 hours	48.83 mm / 1.92 In	3 days	1016 mb / 30 In
2024	28°C / 82°F	17°C / 62°F	22°C / 71°F	205 hours	118.11 mm / 4.65 In	2 days	1016 mb / 30 In
2025	29°C / 83°F	17°C / 62°F	22°C / 72°F	215 hours	303.90 mm / 11.96 In	4 days	1017 mb / 31 In

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