Altadena December Weather Averages

California, United States of America

December Weather Averages for Altadena

High Temp17°C63°F
Low Temp8°C47°F
Avg Temp12°C53°F
Sunshine Hours281 hours 
Rainfall114.93 mm4.52 In
Rain days4 days 
Pressure1018 mb31 In

 

Altadena December Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
200915°C / 59°F6°C / 43°F10°C / 49°F266 hours75.22 mm / 2.96 In3 days1018 mb / 31 In
201016°C / 61°F7°C / 45°F11°C / 52°F247 hours274.17 mm / 10.79 In7 days1017 mb / 31 In
201116°C / 61°F6°C / 43°F10°C / 50°F341 hours14.05 mm / 0.55 In2 days1020 mb / 31 In
201215°C / 58°F7°C / 44°F10°C / 50°F277 hours43.10 mm / 1.70 In5 days1017 mb / 31 In
201318°C / 65°F7°C / 45°F12°C / 53°F338 hours10.00 mm / 0.39 In2 days1019 mb / 31 In
201416°C / 60°F8°C / 47°F11°C / 52°F265 hours113.42 mm / 4.47 In5 days1018 mb / 31 In
201517°C / 63°F7°C / 44°F11°C / 52°F331 hours20.70 mm / 0.81 In2 days1019 mb / 31 In
201617°C / 63°F8°C / 46°F12°C / 53°F288 hours82.06 mm / 3.23 In6 days1019 mb / 31 In
201722°C / 71°F11°C / 52°F16°C / 60°F350 hours0.00 mm / 0.00 In0 days1020 mb / 31 In
201818°C / 64°F9°C / 49°F13°C / 55°F310 hours46.15 mm / 1.82 In3 days1019 mb / 31 In
201915°C / 60°F8°C / 47°F11°C / 53°F234 hours151.92 mm / 5.98 In6 days1018 mb / 31 In
202019°C / 65°F9°C / 49°F13°C / 56°F320 hours21.70 mm / 0.85 In1 days1020 mb / 31 In
202115°C / 58°F7°C / 45°F10°C / 51°F217 hours218.70 mm / 8.61 In7 days1016 mb / 30 In
202214°C / 57°F7°C / 44°F10°C / 50°F196 hours103.80 mm / 4.09 In5 days1018 mb / 31 In
202317°C / 62°F9°C / 48°F13°C / 55°F247 hours66.85 mm / 2.63 In2 days1018 mb / 31 In
202419°C / 67°F11°C / 51°F14°C / 58°F276 hours3.99 mm / 0.16 In1 days1020 mb / 31 In
202520°C / 68°F12°C / 53°F15°C / 59°F267 hours708.00 mm / 27.87 In4 days1018 mb / 31 In

Need more than one day of Altadena history?

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Weather history near Altadena

Region

California

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Altadena weather history: common questions

How far back does Altadena 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 Altadena 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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