Saint Louis September Weather Averages Missouri, United States of America

September Weather Averages for Saint Louis

High Temp	27°C	81°F
Low Temp	17°C	62°F
Avg Temp	22°C	71°F
Sunshine Hours	241 hours
Rainfall	95.89 mm	3.78 In
Rain days	6 days
Pressure	1016 mb	30 In

Saint Louis September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	26°C / 79°F	16°C / 60°F	21°C / 69°F	238 hours	231.46 mm / 9.11 In	8 days	1018 mb / 31 In
2009	26°C / 79°F	15°C / 60°F	20°C / 69°F	271 hours	88.82 mm / 3.50 In	6 days	1017 mb / 31 In
2010	27°C / 80°F	16°C / 60°F	21°C / 70°F	266 hours	137.92 mm / 5.43 In	10 days	1015 mb / 30 In
2011	23°C / 74°F	14°C / 57°F	18°C / 65°F	229 hours	130.79 mm / 5.15 In	8 days	1016 mb / 30 In
2012	25°C / 76°F	15°C / 59°F	19°C / 67°F	205 hours	182.72 mm / 7.19 In	12 days	1016 mb / 30 In
2013	28°C / 83°F	17°C / 62°F	22°C / 72°F	275 hours	47.47 mm / 1.87 In	6 days	1015 mb / 30 In
2014	26°C / 79°F	15°C / 59°F	20°C / 68°F	223 hours	67.61 mm / 2.66 In	7 days	1018 mb / 31 In
2015	28°C / 82°F	17°C / 63°F	22°C / 72°F	207 hours	59.46 mm / 2.34 In	4 days	1017 mb / 31 In
2016	27°C / 80°F	18°C / 64°F	22°C / 72°F	246 hours	211.16 mm / 8.31 In	9 days	1017 mb / 31 In
2017	28°C / 83°F	18°C / 64°F	23°C / 73°F	282 hours	33.57 mm / 1.32 In	3 days	1017 mb / 31 In
2018	28°C / 82°F	19°C / 66°F	23°C / 73°F	241 hours	152.19 mm / 5.99 In	7 days	1017 mb / 31 In
2019	29°C / 85°F	20°C / 67°F	24°C / 75°F	261 hours	48.21 mm / 1.90 In	8 days	1017 mb / 30 In
2020	26°C / 78°F	17°C / 62°F	21°C / 70°F	225 hours	42.54 mm / 1.67 In	3 days	1017 mb / 31 In
2021	29°C / 85°F	18°C / 64°F	23°C / 74°F	236 hours	52.70 mm / 2.07 In	5 days	1015 mb / 30 In
2022	28°C / 83°F	16°C / 62°F	22°C / 71°F	237 hours	43.60 mm / 1.72 In	4 days	1017 mb / 30 In
2023	31°C / 88°F	16°C / 61°F	23°C / 74°F	246 hours	76.20 mm / 3.00 In	3 days	1016 mb / 30 In
2024	28°C / 82°F	17°C / 63°F	22°C / 72°F	205 hours	159.22 mm / 6.27 In	5 days	1015 mb / 30 In

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