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Altadena, California Climate Averages

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Altadena Monthly Climate Averages

January
February
March
April
May
June
July
August
September
October
November
December
Hi 63°F Lo 46°F Hi 63°F Lo 46°F Hi 66°F Lo 48°F Hi 72°F Lo 52°F Hi 75°F Lo 56°F Hi 82°F Lo 62°F Hi 88°F Lo 67°F Hi 89°F Lo 68°F Hi 87°F Lo 67°F Hi 79°F Lo 60°F Hi 71°F Lo 52°F Hi 62°F Lo 46°F
5 mph 5 mph 5 mph 5 mph 5 mph 5 mph 5 mph 5 mph 4 mph 4 mph 5 mph 5 mph
2.6 in 2.8 in 2.2 in 0.7 in 0.4 in 0.1 in 0.2 in 0.2 in 0.2 in 0.6 in 0.9 in 3.3 in
48% 52% 55% 52% 54% 52% 47% 45% 46% 45% 43% 50%
21% 22% 24% 15% 11% 7% 6% 5% 7% 10% 15% 24%
30.1 in 30.0 in 30.0 in 30.0 in 29.9 in 29.9 in 29.9 in 29.9 in 29.9 in 29.9 in 30.0 in 30.1 in
27 25 28 29 30 30 31 31 29 30 29 27
4 3 3 1 1 0 0 0 1 1 1 4
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
4 4 4 5 5 6 7 7 6 5 4 3
274 247 276 313 331 342 358 360 340 334 309 282
January
February
March
April
May
June
July
August
September
October
November
December
Hi 17°C Lo 8°C Hi 17°C Lo 8°C Hi 19°C Lo 9°C Hi 22°C Lo 11°C Hi 24°C Lo 13°C Hi 28°C Lo 17°C Hi 31°C Lo 20°C Hi 32°C Lo 20°C Hi 30°C Lo 19°C Hi 26°C Lo 16°C Hi 21°C Lo 11°C Hi 17°C Lo 8°C
8 km/h 8 km/h 8 km/h 9 km/h 9 km/h 8 km/h 8 km/h 7 km/h 7 km/h 7 km/h 8 km/h 8 km/h
66 mm 71 mm 57 mm 18 mm 9 mm 1 mm 4 mm 6 mm 5 mm 14 mm 23 mm 83 mm
48% 52% 55% 52% 54% 52% 47% 45% 46% 45% 43% 50%
21% 22% 24% 15% 11% 7% 6% 5% 7% 10% 15% 24%
1019 mb 1018 mb 1017 mb 1014 mb 1013 mb 1012 mb 1013 mb 1012 mb 1012 mb 1014 mb 1017 mb 1018 mb
27 25 28 29 30 30 31 31 29 30 29 27
4 3 3 1 1 0 0 0 1 1 1 4
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
4 4 4 5 5 6 7 7 6 5 4 3
274 247 276 313 331 342 358 360 340 334 309 282
Month
Avg. Temperatures
Avg. Wind Speed
Avg. Precipitation
Average Humidity
Avg. Cloud Cover
Pressure Average
Average Dry Days
Avg. Precip. Days
Avg. Snow Days
Average Fog Days
Average UV Index
Avg. Hours of Sun
Averages are based on historical weather data from the past 10 years.

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