Ottawa December Weather Averages

Illinois, United States of America

December Weather Averages for Ottawa

High Temp3°C37°F
Low Temp-4°C25°F
Avg Temp-0°C31°F
Sunshine Hours129 hours 
Rainfall72.28 mm2.85 In
Rain days6 days 
Pressure1019 mb31 In

 

Ottawa December Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
20090°C / 32°F-6°C / 21°F-3°C / 27°F85 hours115.18 mm / 4.53 In13 days1018 mb / 31 In
2010-3°C / 27°F-9°C / 15°F-6°C / 21°F52 hours91.60 mm / 3.61 In8 days1020 mb / 31 In
20115°C / 40°F-2°C / 29°F1°C / 34°F182 hours56.89 mm / 2.24 In4 days1021 mb / 31 In
20125°C / 41°F-1°C / 30°F2°C / 35°F121 hours61.29 mm / 2.41 In5 days1016 mb / 30 In
2013-1°C / 30°F-9°C / 16°F-5°C / 24°F97 hours47.40 mm / 1.87 In11 days1021 mb / 31 In
20143°C / 37°F-2°C / 28°F-0°C / 32°F111 hours24.60 mm / 0.97 In4 days1023 mb / 31 In
20157°C / 45°F1°C / 34°F4°C / 39°F126 hours158.59 mm / 6.24 In9 days1015 mb / 30 In
2016-0°C / 31°F-7°C / 19°F-4°C / 25°F105 hours43.55 mm / 1.71 In9 days1022 mb / 31 In
20171°C / 34°F-6°C / 22°F-3°C / 27°F178 hours20.10 mm / 0.79 In5 days1021 mb / 31 In
20184°C / 40°F-2°C / 28°F1°C / 33°F199 hours129.09 mm / 5.08 In4 days1019 mb / 31 In
20195°C / 41°F-2°C / 28°F1°C / 34°F193 hours41.86 mm / 1.65 In5 days1017 mb / 31 In
20203°C / 38°F-3°C / 26°F-0°C / 32°F189 hours60.08 mm / 2.37 In6 days1018 mb / 31 In
20219°C / 48°F-1°C / 31°F3°C / 38°F205 hours64.70 mm / 2.55 In4 days1015 mb / 30 In
20223°C / 37°F-5°C / 23°F-1°C / 30°F79 hours54.70 mm / 2.15 In6 days1019 mb / 31 In
20237°C / 44°F1°C / 34°F4°C / 39°F116 hours76.64 mm / 3.02 In6 days1018 mb / 31 In
20242°C / 35°F-3°C / 26°F-1°C / 31°F77 hours77.61 mm / 3.06 In3 days1021 mb / 31 In
20250°C / 32°F-6°C / 21°F-3°C / 27°F83 hours104.80 mm / 4.13 In1 days1018 mb / 31 In

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Weather history near Ottawa

Region

Illinois

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Ottawa weather history: common questions

How far back does Ottawa 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 Ottawa 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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