Altadena Weather History

California, United States of America

Weather on a past date in Altadena

Any date from 1 January 2009 to yesterday.

Sat 31 Oct, 2026 Weather in Altadena

Sunrise: 07:11 AM
Sunset: 06:00 PM		Moonrise: 10:52 PM
Moonset: 12:51 PM		Max:
19.0 °c		Min:
11.5 °c		Avg:
15.2 °c		Precip:
3.20 mm		Max Wind:
10.1 kph
 
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IconOvercastOvercastOvercastOvercastOvercastOvercastPatchy rain possibleModerate rain at times
Temp14.1°c13.7°c12.8°c15.2°c17.9°c18.3°c16.9°c14.9°c
Wind6.1 kmph6.1 kmph3.6 kmph2.9 kmph10.1 kmph9.0 kmph8.6 kmph7.1 kmph
Precip0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm0.10 mm0.60 mm
Cloud100%100%100%100%100%100%100%100%
Humidity80%81%79%71%59%55%67%87%
Pressure1013 mb1013 mb1014 mb1014 mb1014 mb1011 mb1011 mb1011 mb

Altadena Annual Weather Averages

MonthHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
January17°C / 63°F8°C / 47°F12°C / 54°F272 hours80.60 mm / 3.17 In4 days1019 mb / 31 In
February18°C / 64°F8°C / 47°F12°C / 54°F242 hours103.73 mm / 4.08 In4 days1018 mb / 31 In
March19°C / 66°F9°C / 49°F14°C / 57°F274 hours68.77 mm / 2.71 In3 days1017 mb / 30 In
April22°C / 71°F11°C / 52°F16°C / 61°F306 hours21.83 mm / 0.86 In2 days1015 mb / 30 In
May23°C / 74°F13°C / 56°F18°C / 64°F329 hours8.53 mm / 0.34 In1 days1013 mb / 30 In
June28°C / 82°F16°C / 62°F22°C / 71°F343 hours1.11 mm / 0.04 In0 days1012 mb / 30 In
July31°C / 88°F19°C / 67°F25°C / 77°F361 hours3.54 mm / 0.14 In1 days1013 mb / 30 In
August32°C / 89°F20°C / 69°F26°C / 78°F360 hours4.93 mm / 0.19 In0 days1012 mb / 30 In
September30°C / 86°F19°C / 67°F24°C / 75°F334 hours6.72 mm / 0.26 In1 days1012 mb / 30 In
October26°C / 79°F15°C / 60°F20°C / 68°F314 hours23.31 mm / 0.92 In2 days1014 mb / 30 In
November21°C / 70°F11°C / 52°F15°C / 60°F301 hours39.21 mm / 1.54 In2 days1017 mb / 31 In
December17°C / 63°F8°C / 47°F12°C / 53°F281 hours114.93 mm / 4.52 In4 days1018 mb / 31 In

Need more than one day of Altadena history?

Download historical weather for Altadena, 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.
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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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