Chicago September Weather Averages

Illinois, United States of America

September Weather Averages for Chicago

High Temp23°C73°F
Low Temp17°C62°F
Avg Temp20°C67°F
Sunshine Hours219 hours 
Rainfall98.89 mm3.89 In
Rain days6 days 
Pressure1017 mb31 In

 

Chicago September Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
200921°C / 70°F16°C / 60°F19°C / 65°F242 hours31.80 mm / 1.25 In5 days1018 mb / 31 In
201021°C / 71°F15°C / 59°F18°C / 65°F243 hours106.57 mm / 4.20 In7 days1015 mb / 30 In
201120°C / 67°F15°C / 59°F17°C / 63°F192 hours127.63 mm / 5.02 In10 days1015 mb / 30 In
201221°C / 70°F15°C / 59°F18°C / 64°F272 hours40.90 mm / 1.61 In3 days1016 mb / 30 In
201322°C / 72°F16°C / 61°F19°C / 66°F245 hours82.99 mm / 3.27 In5 days1016 mb / 30 In
201421°C / 70°F14°C / 58°F18°C / 64°F239 hours129.57 mm / 5.10 In7 days1018 mb / 31 In
201523°C / 73°F17°C / 63°F20°C / 68°F206 hours106.26 mm / 4.18 In6 days1018 mb / 31 In
201623°C / 73°F18°C / 64°F20°C / 69°F218 hours131.31 mm / 5.17 In12 days1017 mb / 31 In
201724°C / 75°F18°C / 64°F21°C / 70°F303 hours34.74 mm / 1.37 In5 days1017 mb / 31 In
201823°C / 73°F17°C / 63°F20°C / 68°F225 hours127.78 mm / 5.03 In8 days1019 mb / 31 In
201923°C / 74°F19°C / 65°F21°C / 70°F201 hours188.97 mm / 7.44 In11 days1017 mb / 30 In
202022°C / 71°F16°C / 61°F19°C / 66°F218 hours115.30 mm / 4.54 In6 days1018 mb / 31 In
202125°C / 78°F18°C / 65°F22°C / 71°F258 hours44.20 mm / 1.74 In6 days1015 mb / 30 In
202223°C / 74°F17°C / 63°F20°C / 68°F220 hours66.30 mm / 2.61 In5 days1017 mb / 30 In
202324°C / 76°F17°C / 63°F21°C / 69°F184 hours127.19 mm / 5.01 In3 days1017 mb / 31 In
202424°C / 76°F18°C / 65°F21°C / 70°F213 hours49.88 mm / 1.96 In1 days1017 mb / 31 In
202523°C / 73°F17°C / 63°F20°C / 68°F146 hours83.80 mm / 3.30 In3 days1017 mb / 31 In
202623°C / 73°F17°C / 63°F20°C / 68°F116 hours184.80 mm / 7.28 In13 days1018 mb / 31 In

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Weather history near Chicago

Region

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Chicago weather history: common questions

How far back does Chicago weather history go?

Hourly historical weather is available from 1 January 2009. Choose a date above, or pick a month at the top of the page for long-term averages.

Can I download Chicago historical weather as a file?

Yes. Buy historical weather data as daily or hourly CSV, yearly monthly averages or monthly climate averages. A free sample download is available.

Is there an API for historical weather?

Yes. The WeatherAPI.com History API returns hourly weather for any past date from 2010, as JSON or XML. Get a free API key.

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