Westmont December Weather Averages

California, United States of America

December Weather Averages for Westmont

High Temp18°C65°F
Low Temp10°C51°F
Avg Temp14°C57°F
Sunshine Hours262 hours 
Rainfall80.68 mm3.18 In
Rain days3 days 
Pressure1018 mb31 In

 

Westmont December Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
200917°C / 63°F8°C / 46°F12°C / 54°F267 hours50.93 mm / 2.01 In3 days1017 mb / 31 In
201018°C / 65°F9°C / 48°F13°C / 55°F242 hours226.77 mm / 8.93 In8 days1017 mb / 31 In
201117°C / 63°F7°C / 45°F12°C / 54°F341 hours22.88 mm / 0.90 In2 days1020 mb / 31 In
201217°C / 62°F9°C / 48°F13°C / 55°F266 hours37.30 mm / 1.47 In6 days1018 mb / 31 In
201319°C / 67°F8°C / 47°F14°C / 57°F335 hours6.20 mm / 0.24 In1 days1019 mb / 31 In
201417°C / 62°F11°C / 51°F13°C / 56°F251 hours102.70 mm / 4.04 In6 days1018 mb / 31 In
201519°C / 65°F9°C / 48°F14°C / 56°F330 hours21.30 mm / 0.84 In2 days1019 mb / 31 In
201618°C / 64°F10°C / 50°F13°C / 56°F268 hours74.52 mm / 2.93 In5 days1019 mb / 31 In
201723°C / 73°F13°C / 55°F17°C / 63°F333 hours0.20 mm / 0.01 In0 days1020 mb / 31 In
201819°C / 67°F12°C / 53°F15°C / 59°F307 hours63.80 mm / 2.51 In2 days1019 mb / 31 In
201918°C / 64°F11°C / 52°F14°C / 57°F245 hours153.44 mm / 6.04 In4 days1018 mb / 31 In
202021°C / 70°F12°C / 53°F16°C / 61°F317 hours20.90 mm / 0.82 In1 days1019 mb / 31 In
202117°C / 63°F10°C / 51°F13°C / 56°F219 hours133.50 mm / 5.26 In8 days1016 mb / 30 In
202218°C / 64°F11°C / 51°F14°C / 56°F179 hours56.30 mm / 2.22 In2 days1018 mb / 31 In
202320°C / 68°F14°C / 57°F16°C / 62°F234 hours82.08 mm / 3.23 In1 days1017 mb / 31 In
202417°C / 62°F11°C / 51°F13°C / 56°F141 hours0.00 mm / 0.00 In0 days1020 mb / 31 In
202518°C / 65°F12°C / 53°F15°C / 59°F171 hours318.70 mm / 12.55 In4 days1018 mb / 31 In

Need more than one day of Westmont history?

Download historical weather for Westmont, 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.
  • Monthly climate averagesLong-term climate normals by month.
  • CSV formatReady for Excel, Python, R or your database.
Buy historical weather data Or use the History API

Weather history near Westmont

Region

California

See the Westmont 14-day forecast »

Hotels near Westmont

Westmont weather history: common questions

How far back does Westmont 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 Westmont 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.

Quick and Easy Signup for Weather API

WeatherAPI.com makes it super easy to integrate our realtime, daily, hourly and 15 min interval weather forecast data, historical weather, marine weather, bulk request, air quality data, pollen, evapotranspiration, autocomplete, time zone, astronomy and sports data into your new or existing project.
Get Started