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Castaic, CA Weather Forecast
Castaic, CA Weather Forecast Dated: 850 PM Thu Sep 24 2026
Expect a very warm period with plenty of sunshine and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.
Thursday, September 24, 2026
Mid-Morning
76°F 25°C
Sunny
Mid-Afternoon
88°F 31°C
Sunny
Early-Evening
75°F 24°C
Sunny
Warm and summery near 88°F 31°C, sunny throughout the day, with increasing humidity and steady pressure. Winds turning from the SSW to the WNW at 5 mph 8 km/h.
Friday, September 25, 2026
Mid-Morning
75°F 24°C
Overcast
Mid-Afternoon
87°F 30°C
Sunny
Early-Evening
76°F 24°C
Partly Cloudy
Balmy with temperatures reaching 87°F 30°C, overcast in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds switching from the SSW to the NNW at 6 mph 10 km/h.
Saturday, September 26, 2026
Mid-Morning
74°F 23°C
Partly Cloudy
Mid-Afternoon
84°F 29°C
Overcast
Early-Evening
76°F 24°C
Overcast
Quite warm around 84°F 29°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the SSW to the WSW at 6 mph 9 km/h.
Sunday, September 27, 2026
Mid-Morning
68°F 20°C
Sunny
Mid-Afternoon
79°F 26°C
Sunny
Early-Evening
68°F 20°C
Sunny
Mild temperatures up to 79°F 26°C, sunny throughout the day, with steady humidity and steady pressure. Winds swinging from the SW to the W at 9 mph 15 km/h.
Monday, September 28, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
66°F 19°C
Sunny
Mild with a high of 73°F 23°C, sunny throughout the day, with steady humidity and steady pressure. Winds building from NNE at 4 mph 6 km/h to NE at 12 mph 19 km/h. Gusts up to 20 mph 32 km/h.
Tuesday, September 29, 2026
Mid-Morning
70°F 21°C
Sunny
Mid-Afternoon
85°F 29°C
Sunny
Early-Evening
76°F 25°C
Sunny
Warm and summery near 85°F 29°C, sunny throughout the day, with steady humidity and steady pressure. Winds SE at 11 mph 18 km/h.
Wednesday, September 30, 2026
Mid-Morning
75°F 24°C
Sunny
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
73°F 23°C
Sunny
Balmy with temperatures reaching 82°F 28°C, sunny throughout the day, with increasing humidity and steady pressure. Winds switching from the E to the WSW at 8 mph 12 km/h.
Thursday, October 1, 2026
Mid-Morning
67°F 19°C
Sunny
Mid-Afternoon
79°F 26°C
Partly Cloudy
Early-Evening
71°F 22°C
Sunny
Enjoyable around 79°F 26°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds moving from the SSW to the WSW at 6 mph 9 km/h.
Friday, October 2, 2026
Mid-Morning
63°F 17°C
Sunny
Mid-Afternoon
76°F 24°C
Sunny
Early-Evening
67°F 20°C
Sunny
Mild temperatures up to 76°F 24°C, cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds SW at 12 mph 19 km/h.
Saturday, October 3, 2026
Mid-Morning
75°F 24°C
Sunny
Mid-Afternoon
87°F 30°C
Sunny
Early-Evening
80°F 27°C
Sunny
Very warm with a high of 87°F 30°C, sunny throughout the day, with lower humidity and steady pressure. Winds out of the ENE at 15 mph 24 km/h.
Sunday, October 4, 2026
Mid-Morning
75°F 24°C
Overcast
Mid-Afternoon
84°F 29°C
Overcast
Early-Evening
78°F 25°C
Sunny
Warm and summery near 84°F 29°C, overcast through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds blowing from the NE at 21 mph 35 km/h. Gusts up to 20 mph 31 km/h.
Monday, October 5, 2026
Mid-Morning
77°F 25°C
Sunny
Mid-Afternoon
87°F 31°C
Sunny
Early-Evening
83°F 28°C
Sunny
Balmy with temperatures reaching 87°F 31°C, sunny throughout the day, with steady humidity and steady pressure. Winds NE at 20 mph 32 km/h. Gusts up to 23 mph 37 km/h.
Tuesday, October 6, 2026
Mid-Morning
79°F 26°C
Sunny
Mid-Afternoon
90°F 32°C
Sunny
Early-Evening
83°F 28°C
Sunny
Sizzling hot with 90°F 32°C, sunny throughout the day, with steady humidity and steady pressure. Winds out of the ENE at 24 mph 39 km/h.
Wednesday, October 7, 2026
Mid-Morning
80°F 27°C
Sunny
Mid-Afternoon
89°F 32°C
Sunny
Early-Evening
82°F 28°C
Sunny
Warm temperatures up to 89°F 32°C, sunny throughout the day, with steady humidity and steady pressure. Winds blowing from the NE at 19 mph 31 km/h.
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