Normal September Weather Averages

Illinois, United States of America

September Weather Averages for Normal

High Temp25°C77°F
Low Temp15°C58°F
Avg Temp20°C67°F
Sunshine Hours223 hours 
Rainfall81.38 mm3.20 In
Rain days6 days 
Pressure1017 mb31 In

 

Normal September Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
200924°C / 75°F13°C / 56°F18°C / 65°F212 hours39.37 mm / 1.55 In4 days1018 mb / 31 In
201024°C / 76°F14°C / 57°F19°C / 66°F246 hours115.52 mm / 4.55 In9 days1015 mb / 30 In
201121°C / 70°F12°C / 54°F17°C / 62°F203 hours95.05 mm / 3.74 In8 days1016 mb / 30 In
201223°C / 73°F12°C / 54°F17°C / 63°F221 hours167.13 mm / 6.58 In7 days1016 mb / 30 In
201326°C / 78°F14°C / 58°F20°C / 68°F283 hours44.40 mm / 1.75 In4 days1016 mb / 30 In
201423°C / 73°F12°C / 54°F17°C / 63°F240 hours99.46 mm / 3.92 In7 days1018 mb / 31 In
201526°C / 79°F16°C / 61°F21°C / 69°F212 hours55.30 mm / 2.18 In4 days1017 mb / 31 In
201625°C / 77°F16°C / 61°F20°C / 69°F202 hours106.09 mm / 4.18 In10 days1017 mb / 31 In
201726°C / 79°F15°C / 59°F20°C / 68°F291 hours29.18 mm / 1.15 In3 days1017 mb / 31 In
201825°C / 77°F16°C / 61°F20°C / 68°F191 hours75.27 mm / 2.96 In7 days1018 mb / 31 In
201926°C / 78°F17°C / 63°F21°C / 70°F206 hours126.37 mm / 4.98 In11 days1017 mb / 30 In
202023°C / 74°F14°C / 56°F18°C / 65°F209 hours64.58 mm / 2.54 In5 days1017 mb / 31 In
202127°C / 80°F16°C / 61°F21°C / 70°F275 hours39.70 mm / 1.56 In4 days1015 mb / 30 In
202226°C / 79°F14°C / 58°F20°C / 68°F249 hours66.10 mm / 2.60 In4 days1017 mb / 31 In
202329°C / 84°F14°C / 57°F21°C / 69°F214 hours149.53 mm / 5.89 In5 days1017 mb / 31 In
202427°C / 80°F15°C / 59°F20°C / 69°F233 hours49.73 mm / 1.96 In2 days1017 mb / 30 In
202527°C / 80°F14°C / 58°F20°C / 69°F194 hours60.80 mm / 2.39 In3 days1017 mb / 31 In
202626°C / 79°F17°C / 63°F21°C / 71°F138 hours81.20 mm / 3.20 In12 days1017 mb / 31 In

Need more than one day of Normal history?

Download historical weather for Normal, 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 Normal

Region

Illinois

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Normal weather history: common questions

How far back does Normal 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 Normal 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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