7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index
7 Day & Night Weather Forecast for Altadena, CA - (Fahrenheit & Celsius)
Valid: 6:33 PM 7/25/2026
Today
Overcast with a high near 95°F[35°C]. S wind to around 7 mph[11 kph], with gusts to near 9 mph[15 kph]. Dewpoint near 62°F[17°C] with humidity of 94%. Pressure around 28.44 in[963.1 mb]. UV Index: 8.45. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Tonight
Overcast with a low around 66°F[19°C]. S wind to around 7 mph[11 kph], with gusts to near 9 mph[15 kph]. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Sunday
Overcast with a high near 96°F[36°C]. SW wind to around 8 mph[14 kph], with gusts to near 9 mph[15 kph]. Dewpoint near 62°F[17°C] with humidity of 89%. Pressure around 28.44 in[963.1 mb]. UV Index: 8.1. Chance of precipitation 2% with QPF of 0.00 in[0.0 mm].
Sunday Night
Overcast with a low around 66°F[19°C]. SW wind to around 8 mph[14 kph], with gusts to near 9 mph[15 kph]. Chance of precipitation 2% with QPF of 0.00 in[0.0 mm].
Monday
Overcast with a high near 92°F[33°C]. SSW wind to around 10 mph[16 kph], with gusts to near 6 mph[10 kph]. Dewpoint near 62°F[17°C] with humidity of 100%. Pressure around 28.44 in[963.1 mb]. UV Index: 8.3. Chance of precipitation 1% with QPF of 0.00 in[0.0 mm].
Monday Night
Overcast with a low around 63°F[17°C]. SSW wind to around 10 mph[16 kph], with gusts to near 6 mph[10 kph]. Chance of precipitation 1% with QPF of 0.00 in[0.0 mm].
Tuesday
Overcast with a high near 91°F[33°C]. SSW wind to around 10 mph[16 kph], with gusts to near 7 mph[11 kph]. Dewpoint near 62°F[17°C] with humidity of 60%. Pressure around 28.44 in[963.1 mb]. UV Index: 8.4. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Tuesday Night
Overcast with a low around 74°F[23°C]. SSW wind to around 10 mph[16 kph], with gusts to near 7 mph[11 kph]. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Wednesday
Clear with a high near 91°F[33°C]. SSW wind to around 9 mph[15 kph], with gusts to near 7 mph[10 kph]. Dewpoint near 62°F[17°C] with humidity of 56%. Pressure around 28.44 in[963.1 mb]. UV Index: 8.4. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Wednesday Night
Clear with a low around 72°F[22°C]. SSW wind to around 9 mph[15 kph], with gusts to near 7 mph[10 kph]. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Thursday
Partly Cloudy with a high near 90°F[32°C]. SSW wind to around 9 mph[14 kph], with gusts to near 6 mph[9 kph]. Dewpoint near 62°F[17°C] with humidity of 61%. Pressure around 28.44 in[963.1 mb]. UV Index: 8.25. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Thursday Night
Partly Cloudy with a low around 71°F[22°C]. SSW wind to around 9 mph[14 kph], with gusts to near 6 mph[9 kph]. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Friday
Overcast with a high near 92°F[33°C]. SSW wind to around 9 mph[14 kph], with gusts to near 6 mph[9 kph]. Dewpoint near 62°F[17°C] with humidity of 56%. Pressure around 28.44 in[963.1 mb]. UV Index: 8.3. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
Friday Night
Overcast with a low around 73°F[23°C]. SSW wind to around 9 mph[14 kph], with gusts to near 6 mph[9 kph]. Chance of precipitation 0% with QPF of 0.00 in[0.0 mm].
QPF - Max Wind Speed - Max Humidity - Snowfall
7 Day and Night - QPF Forecast for Altadena, CA
Today: 0.0 mm|0.00 in
Tonight: 0.0 mm|0.00 in
Sunday: 0.0 mm|0.00 in
Sunday Night: 0.0 mm|0.00 in
Monday: 0.0 mm|0.00 in
Monday Night: 0.0 mm|0.00 in
Tuesday: 0.0 mm|0.00 in
Tuesday Night: 0.0 mm|0.00 in
Wednesday: 0.0 mm|0.00 in
Wednesday Night: 0.0 mm|0.00 in
Thursday: 0.0 mm|0.00 in
Thursday Night: 0.0 mm|0.00 in
Friday: 0.0 mm|0.00 in
Friday Night: 0.0 mm|0.00 in
7 Day and Night - Maximum Wind Speed Forecast for Altadena, CA
Today: S @ 11 kph|7 mph
Tonight: S @ 11 kph|7 mph
Sunday: SW @ 14 kph|8 mph
Sunday Night: SW @ 14 kph|8 mph
Monday: SSW @ 16 kph|10 mph
Monday Night: SSW @ 16 kph|10 mph
Tuesday: SSW @ 16 kph|10 mph
Tuesday Night: SSW @ 16 kph|10 mph
Wednesday: SSW @ 15 kph|9 mph
Wednesday Night: SSW @ 15 kph|9 mph
Thursday: SSW @ 14 kph|9 mph
Thursday Night: SSW @ 14 kph|9 mph
Friday: SSW @ 14 kph|9 mph
Friday Night: SSW @ 14 kph|9 mph
7 Day and Night - Maximum Humidity Forecast for Altadena, CA
Today: 94 %
Tonight: 94 %
Sunday: 89 %
Sunday Night: 89 %
Monday: 100 %
Monday Night: 100 %
Tuesday: 60 %
Tuesday Night: 60 %
Wednesday: 56 %
Wednesday Night: 56 %
Thursday: 61 %
Thursday Night: 61 %
Friday: 56 %
Friday Night: 56 %
7 Day and Night - Snowfall Totals Forecast for Altadena, CA