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Mountain House, CA Weather Forecast
Mountain House, CA Weather Forecast Dated: 232 AM Sat Sep 12 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.
Saturday, September 12, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
84°F 29°C
Sunny
Early-Evening
68°F 20°C
Sunny
Warm and summery near 84°F 29°C, sunny throughout the day, with steady humidity and steady pressure. Winds picking up from W at 8 mph 13 km/h to WSW at 19 mph 30 km/h. Gusts up to 29 mph 47 km/h.
Sunday, September 13, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
68°F 20°C
Cloudy
Balmy with temperatures reaching 82°F 28°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds switching from the WNW to the WSW at 12 mph 20 km/h.
Monday, September 14, 2026
Mid-Morning
69°F 21°C
Sunny
Mid-Afternoon
89°F 32°C
Sunny
Early-Evening
75°F 24°C
Partly Cloudy
Quite warm around 89°F 32°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling. Winds moving from the NW to the WSW at 13 mph 20 km/h.
Tuesday, September 15, 2026
Mid-Morning
67°F 20°C
Sunny
Mid-Afternoon
89°F 32°C
Sunny
Early-Evening
75°F 24°C
Sunny
Warm temperatures up to 89°F 32°C, sunny throughout the day, with steady humidity and steady pressure. Winds swinging from the NW to the WSW at 11 mph 17 km/h.
Wednesday, September 16, 2026
Mid-Morning
66°F 19°C
Sunny
Mid-Afternoon
90°F 32°C
Sunny
Early-Evening
79°F 26°C
Sunny
Very hot with a high of 90°F 32°C, sunny throughout the day, with lower humidity and steady pressure. Winds shifting from the NW to the WSW at 10 mph 15 km/h.
Thursday, September 17, 2026
Mid-Morning
70°F 21°C
Sunny
Mid-Afternoon
91°F 33°C
Sunny
Early-Evening
79°F 26°C
Sunny
Very hot with temperatures reaching 91°F 33°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the NNW to the WSW at 10 mph 16 km/h.
Friday, September 18, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
90°F 32°C
Sunny
Early-Evening
76°F 24°C
Sunny
Hot and sweltering around 90°F 32°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the NW to the WSW at 11 mph 18 km/h.
Saturday, September 19, 2026
Mid-Morning
67°F 20°C
Sunny
Mid-Afternoon
84°F 29°C
Sunny
Early-Evening
69°F 21°C
Sunny
Quite warm around 84°F 29°C, sunny throughout the day, with steady humidity and steady pressure. Winds moving from the WNW to the WSW at 13 mph 21 km/h.
Sunday, September 20, 2026
Mid-Morning
66°F 19°C
Sunny
Mid-Afternoon
87°F 31°C
Sunny
Early-Evening
74°F 23°C
Overcast
Warm temperatures up to 87°F 31°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds swinging from the WNW to the WSW at 11 mph 18 km/h.
Monday, September 21, 2026
Mid-Morning
71°F 22°C
Overcast
Mid-Afternoon
90°F 32°C
Partly Cloudy
Early-Evening
80°F 27°C
Scattered Showers
Very hot with a high of 90°F 32°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds shifting from the NW to the WSW at 5 mph 9 km/h.
Tuesday, September 22, 2026
Mid-Morning
76°F 24°C
Cloudy
Mid-Afternoon
93°F 34°C
Partly Cloudy
Early-Evening
81°F 27°C
Sunny
Very hot with temperatures reaching 93°F 34°C, partly cloudy in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds turning from the S to the WSW at 12 mph 19 km/h. Gusts up to 21 mph 32 km/h.
Wednesday, September 23, 2026
Mid-Morning
71°F 22°C
Partly Cloudy
Mid-Afternoon
85°F 30°C
Scattered Showers
Early-Evening
72°F 23°C
Partly Cloudy
Balmy with temperatures reaching 85°F 30°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds increasing from the W at 4 mph 7 km/h to W at 13 mph 20 km/h.
Thursday, September 24, 2026
Mid-Morning
66°F 19°C
Overcast
Mid-Afternoon
80°F 27°C
Sunny
Early-Evening
68°F 20°C
Sunny
Quite warm around 80°F 27°C, partly cloudy in the morning, cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds picking up from WNW at 5 mph 9 km/h to W at 14 mph 23 km/h. Gusts up to 20 mph 32 km/h.
Friday, September 25, 2026
Mid-Morning
65°F 18°C
Overcast
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
68°F 20°C
Sunny
Mild temperatures up to 77°F 25°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds swinging from the W to the WSW at 12 mph 19 km/h. Gusts up to 20 mph 32 km/h.
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