Potomac December Weather Averages

Maryland, United States of America

December Weather Averages for Potomac

High Temp7°C45°F
Low Temp1°C33°F
Avg Temp4°C39°F
Sunshine Hours174 hours 
Rainfall122.32 mm4.82 In
Rain days7 days 
Pressure1020 mb31 In

 

Potomac December Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
20095°C / 40°F-2°C / 28°F1°C / 34°F197 hours180.01 mm / 7.09 In7 days1019 mb / 31 In
20102°C / 35°F-4°C / 24°F-2°C / 29°F215 hours69.22 mm / 2.73 In5 days1016 mb / 30 In
20119°C / 49°F2°C / 35°F5°C / 42°F228 hours137.73 mm / 5.42 In5 days1022 mb / 31 In
20129°C / 48°F2°C / 36°F5°C / 42°F185 hours81.37 mm / 3.20 In7 days1017 mb / 31 In
20137°C / 44°F-0°C / 32°F3°C / 38°F168 hours161.72 mm / 6.37 In9 days1021 mb / 31 In
20147°C / 45°F1°C / 33°F4°C / 39°F145 hours86.00 mm / 3.39 In10 days1022 mb / 31 In
201513°C / 56°F6°C / 43°F9°C / 49°F129 hours125.21 mm / 4.93 In9 days1019 mb / 31 In
20167°C / 44°F-0°C / 31°F3°C / 37°F189 hours57.90 mm / 2.28 In6 days1022 mb / 31 In
20176°C / 43°F-1°C / 31°F3°C / 37°F200 hours36.50 mm / 1.44 In4 days1020 mb / 31 In
20188°C / 47°F2°C / 35°F5°C / 41°F144 hours166.38 mm / 6.55 In9 days1020 mb / 31 In
20198°C / 46°F1°C / 35°F4°C / 40°F181 hours96.72 mm / 3.81 In12 days1019 mb / 31 In
20207°C / 44°F1°C / 33°F4°C / 38°F182 hours194.71 mm / 7.67 In6 days1018 mb / 31 In
202112°C / 53°F4°C / 39°F7°C / 45°F179 hours33.10 mm / 1.30 In5 days1019 mb / 31 In
20227°C / 45°F-0°C / 32°F3°C / 38°F167 hours121.60 mm / 4.79 In7 days1022 mb / 31 In
202310°C / 50°F3°C / 38°F6°C / 43°F150 hours172.67 mm / 6.80 In7 days1021 mb / 31 In
20246°C / 43°F-0°C / 32°F3°C / 37°F156 hours177.06 mm / 6.97 In5 days1023 mb / 31 In
20254°C / 40°F-2°C / 28°F1°C / 34°F151 hours181.50 mm / 7.15 In4 days1019 mb / 31 In

Need more than one day of Potomac history?

Download historical weather for Potomac, 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 Potomac

Region

Maryland

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Potomac weather history: common questions

How far back does Potomac 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 Potomac 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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