Prospect Heights September Weather Averages

Illinois, United States of America

September Weather Averages for Prospect Heights

High Temp24°C75°F
Low Temp16°C60°F
Avg Temp19°C67°F
Sunshine Hours221 hours 
Rainfall91.42 mm3.60 In
Rain days6 days 
Pressure1017 mb31 In

 

Prospect Heights September Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
200922°C / 71°F15°C / 58°F18°C / 65°F238 hours36.16 mm / 1.42 In4 days1019 mb / 31 In
201022°C / 71°F14°C / 58°F18°C / 64°F227 hours87.53 mm / 3.45 In5 days1015 mb / 30 In
201120°C / 67°F13°C / 56°F16°C / 62°F199 hours114.20 mm / 4.50 In9 days1015 mb / 30 In
201222°C / 71°F13°C / 56°F17°C / 63°F268 hours44.12 mm / 1.74 In4 days1016 mb / 30 In
201323°C / 73°F15°C / 59°F19°C / 66°F247 hours43.89 mm / 1.73 In4 days1016 mb / 30 In
201422°C / 71°F13°C / 55°F17°C / 63°F238 hours97.90 mm / 3.85 In6 days1018 mb / 31 In
201524°C / 75°F16°C / 60°F20°C / 67°F209 hours95.76 mm / 3.77 In5 days1018 mb / 31 In
201624°C / 75°F17°C / 62°F20°C / 68°F215 hours75.73 mm / 2.98 In9 days1017 mb / 31 In
201725°C / 77°F17°C / 63°F21°C / 70°F304 hours33.82 mm / 1.33 In4 days1017 mb / 31 In
201824°C / 75°F17°C / 63°F21°C / 69°F218 hours117.44 mm / 4.62 In9 days1019 mb / 31 In
201924°C / 76°F18°C / 64°F21°C / 70°F179 hours191.23 mm / 7.53 In12 days1016 mb / 30 In
202022°C / 72°F15°C / 59°F19°C / 65°F226 hours123.98 mm / 4.88 In6 days1017 mb / 31 In
202126°C / 79°F17°C / 63°F21°C / 70°F252 hours42.00 mm / 1.65 In6 days1014 mb / 30 In
202224°C / 75°F16°C / 60°F20°C / 67°F233 hours66.60 mm / 2.62 In5 days1017 mb / 31 In
202326°C / 79°F16°C / 61°F21°C / 69°F188 hours131.92 mm / 5.19 In4 days1017 mb / 31 In
202426°C / 79°F17°C / 62°F21°C / 70°F236 hours22.68 mm / 0.89 In2 days1017 mb / 31 In
202526°C / 78°F16°C / 62°F21°C / 69°F175 hours154.50 mm / 6.08 In5 days1017 mb / 31 In
202625°C / 76°F16°C / 62°F20°C / 68°F118 hours166.10 mm / 6.54 In11 days1018 mb / 31 In

Need more than one day of Prospect Heights history?

Download historical weather for Prospect Heights, or any other location, in CSV from January 2009 onwards. Ideal for research, insurance, energy, agriculture and machine-learning projects.

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Weather history near Prospect Heights

Region

Illinois

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Prospect Heights weather history: common questions

How far back does Prospect Heights 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 Prospect Heights 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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