Weather in Altadena, CA
Updated 2026-09-26 06:45 local time · ZIP codes 91001
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
74°10% rain
72°6% rain75°8% rain77°5% rain
79°1% rain
81°2% rain82°1% rain83°0% rain82°0% rain82°0% rain80°8% rain78°9% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 9%).
It feels like 73°F with winds near 2 mph.
72°F, 6% rain chance and 2 mph wind.
Visibility is around 6 mi; gusts may reach 17 mph.
Current temperature is 74°F, wind 2 mph, rain chance up to 9%.
UV index is 0.
Local weather characteristics in Altadena
California weather varies from cool marine conditions along parts of the Pacific coast to hot inland valleys, deserts and snowy mountain climates. Short distances can produce large temperature differences.
Altadena is part of the West weather region. The forecast point is near 34.19°N latitude and 118.13°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Altadena weather today
Overcast and 74°F in Altadena, CA. Today's high is 83°F with a 4% rain chance. Winds are around 2 mph with gusts near 11 mph. Relative humidity is 43%, pressure is 29.89 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Altadena
Sunrise is at 06:43 AM and sunset is at 06:44 PM. Tomorrow's forecast calls for Sunny with a high near 79°F and a low near 65°F. The maximum rain chance is 3%.