Summit September Weather Averages

Illinois, United States of America

September Weather Averages for Summit

High Temp24°C75°F
Low Temp16°C61°F
Avg Temp20°C68°F
Sunshine Hours224 hours 
Rainfall83.39 mm3.28 In
Rain days6 days 
Pressure1017 mb31 In

 

Summit September Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
200922°C / 72°F15°C / 59°F19°C / 65°F255 hours27.20 mm / 1.07 In3 days1018 mb / 31 In
201022°C / 72°F14°C / 58°F18°C / 65°F240 hours103.80 mm / 4.09 In7 days1015 mb / 30 In
201120°C / 68°F14°C / 57°F17°C / 62°F194 hours118.50 mm / 4.67 In10 days1015 mb / 30 In
201222°C / 71°F14°C / 57°F18°C / 64°F269 hours50.20 mm / 1.98 In4 days1016 mb / 30 In
201323°C / 74°F15°C / 60°F19°C / 67°F249 hours37.65 mm / 1.48 In4 days1016 mb / 30 In
201422°C / 71°F14°C / 56°F17°C / 63°F253 hours87.09 mm / 3.43 In6 days1018 mb / 31 In
201524°C / 75°F16°C / 61°F20°C / 68°F203 hours83.64 mm / 3.29 In6 days1018 mb / 31 In
201624°C / 75°F17°C / 63°F20°C / 68°F223 hours73.17 mm / 2.88 In13 days1017 mb / 31 In
201725°C / 77°F17°C / 63°F21°C / 70°F301 hours31.40 mm / 1.24 In4 days1017 mb / 31 In
201824°C / 75°F17°C / 63°F21°C / 69°F226 hours73.04 mm / 2.88 In9 days1019 mb / 31 In
201925°C / 76°F18°C / 65°F21°C / 70°F210 hours139.84 mm / 5.51 In12 days1017 mb / 30 In
202023°C / 73°F16°C / 60°F19°C / 67°F220 hours112.80 mm / 4.44 In5 days1018 mb / 31 In
202127°C / 80°F18°C / 64°F22°C / 71°F254 hours56.10 mm / 2.21 In6 days1015 mb / 30 In
202225°C / 76°F16°C / 61°F20°C / 68°F223 hours68.30 mm / 2.69 In5 days1017 mb / 30 In
202327°C / 80°F16°C / 61°F21°C / 70°F198 hours113.80 mm / 4.48 In4 days1017 mb / 31 In
202426°C / 80°F18°C / 64°F22°C / 71°F235 hours42.74 mm / 1.68 In1 days1017 mb / 31 In
202525°C / 78°F17°C / 62°F21°C / 69°F164 hours85.30 mm / 3.36 In2 days1017 mb / 31 In
202625°C / 77°F17°C / 62°F21°C / 69°F119 hours196.50 mm / 7.74 In14 days1018 mb / 31 In

Need more than one day of Summit history?

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

  • Historical weatherDaily and hourly interval data.
  • Yearly monthly averagesMonthly averages for every year since 2009.
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Weather history near Summit

Region

Illinois

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Summit weather history: common questions

How far back does Summit 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 Summit 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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