Best year time to visit Altadena

General weather information about Altadena

Average annual temperature is 16.5 °C

Absolute maximum temperature: 36.2 °C

Absolute minimum temperature: 0.3 °C

Number of sunny days: 262 days

Number of rainy days: 103 days

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* Weather data for Altadena United States is based on climate observations for 2026 year

Altadena air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)18.622.919.528.527.432.436.236.234.232.826.525.2
Average daytime temperature (°C)14.015.214.521.321.023.232.530.726.026.121.418.7
Average temperature (°C)10.09.79.714.915.317.025.824.920.520.016.013.9
Average night temperature (°C)6.55.56.110.011.312.520.220.016.515.411.310.1
Absolute minimum temperature (°C)1.80.31.72.86.010.313.315.113.09.75.74.8

Altadena monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.010.0
Daylight mean duration (h)10.211.012.013.013.914.414.213.412.411.310.49.9
Daylight minimum duration (h)9.010.011.012.013.014.013.012.011.010.010.09.0
Sunshine mean duration (h)6.28.27.811.411.611.713.111.710.510.39.07.6
Precipitation (mm)39018526417421301017682491
Sunny days141710251822312824272323
Rainy days1711215138036478
Snow days000000000000

Altadena - weather forecast by months

Altadena weather in januaryAltadena weather in februaryAltadena weather in marchAltadena weather in aprilAltadena weather in mayAltadena weather in juneAltadena weather in julyAltadena weather in augustAltadena weather in septemberAltadena weather in octoberAltadena weather in novemberAltadena weather in december

Best time to visit Altadena:

The best time to visit Altadena during the most sunny months:

  • July — 13.1(h)

The largest precipitation sum in Altadena is at

  • January — 390(mm)
  • February — 185(mm)
  • March — 264(mm)

    • Weather forecast in the closest to Altadena admin centers

    Weather forecast in the closest towns to Altadena

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    Frequently asked questions

    When is the best time to visit Altadena?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Altadena.
    What is the weather like in Altadena?
    See average temperature, rainfall and daylight hours for Altadena by month in the table above.
    How many sunny days does Altadena have?
    The monthly weather statistics above show sunshine and rainfall patterns for Altadena throughout the year.