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Fallbrook, CA Weather Forecast
Fallbrook, CA Weather Forecast Dated: 932 PM Fri Sep 18 2026
Expect a very warm period with plenty of sunshine and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.
Friday, September 18, 2026
Mid-Morning
68°F 20°C
Scattered Showers
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
68°F 20°C
Sunny
Pleasant near 77°F 25°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds turning from the NNW to the W at 5 mph 9 km/h.
Saturday, September 19, 2026
Mid-Morning
69°F 21°C
Sunny
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
70°F 21°C
Sunny
Comfortable with temperatures reaching 77°F 25°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds switching from the WSW to the W at 4 mph 5 km/h.
Sunday, September 20, 2026
Mid-Morning
69°F 21°C
Overcast
Mid-Afternoon
76°F 24°C
Partly Cloudy
Early-Evening
68°F 20°C
Sunny
Enjoyable around 76°F 24°C, overcast in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds moving from the SSW to the WSW at 6 mph 8 km/h.
Monday, September 21, 2026
Mid-Morning
67°F 20°C
Partly Cloudy
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
66°F 19°C
Sunny
Mild temperatures up to 75°F 24°C, cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds swinging from the SSW to the W at 5 mph 8 km/h.
Tuesday, September 22, 2026
Mid-Morning
67°F 19°C
Sunny
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
68°F 20°C
Sunny
Mild with a high of 75°F 24°C, sunny throughout the day, with steady humidity and steady pressure. Winds shifting from the ESE to the WNW at 5 mph 9 km/h.
Wednesday, September 23, 2026
Mid-Morning
69°F 20°C
Sunny
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
68°F 20°C
Sunny
Pleasant near 75°F 24°C, sunny throughout the day, with steady humidity and steady pressure. Winds turning from the WSW to the WNW at 5 mph 9 km/h.
Thursday, September 24, 2026
Mid-Morning
70°F 21°C
Sunny
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
69°F 21°C
Sunny
Comfortable with temperatures reaching 77°F 25°C, sunny throughout the day, with steady humidity and steady pressure. Winds out of the WSW at 10 mph 16 km/h.
Friday, September 25, 2026
Mid-Morning
73°F 23°C
Sunny
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
71°F 22°C
Sunny
Quite warm around 82°F 28°C, sunny throughout the day, with steady humidity and steady pressure. Winds moving from the NW to the W at 4 mph 7 km/h.
Saturday, September 26, 2026
Mid-Morning
75°F 24°C
Sunny
Mid-Afternoon
83°F 28°C
Sunny
Early-Evening
74°F 23°C
Sunny
Warm temperatures up to 83°F 28°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds swinging from the NW to the W at 5 mph 7 km/h.
Sunday, September 27, 2026
Mid-Morning
80°F 27°C
Overcast
Mid-Afternoon
89°F 32°C
Scattered Showers
Early-Evening
82°F 28°C
Overcast
Very warm with a high of 89°F 32°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure.
Monday, September 28, 2026
Mid-Morning
86°F 30°C
Sunny
Mid-Afternoon
87°F 30°C
Sunny
Early-Evening
78°F 25°C
Sunny
Quite warm reaching 87°F 30°C, feeling like 91°F 33°C during peak afternoon, sunny through the afternoon, turning partly cloudy this evening, with increasing humidity and steady pressure. Winds shifting from the ESE to the SSW at 8 mph 13 km/h.
Tuesday, September 29, 2026
Mid-Morning
71°F 22°C
Cloudy
Mid-Afternoon
78°F 25°C
Sunny
Early-Evening
71°F 22°C
Sunny
Comfortable with temperatures reaching 78°F 25°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds turning from the WSW to the WNW at 5 mph 7 km/h.
Wednesday, September 30, 2026
Mid-Morning
74°F 23°C
Sunny
Mid-Afternoon
81°F 27°C
Sunny
Early-Evening
73°F 23°C
Sunny
Quite warm around 81°F 27°C, sunny throughout the day, with steady humidity and steady pressure. Winds WSW at 9 mph 14 km/h.
Thursday, October 1, 2026
Mid-Morning
76°F 24°C
Sunny
Mid-Afternoon
83°F 28°C
Sunny
Early-Evening
76°F 24°C
Sunny
Warm temperatures up to 83°F 28°C, sunny throughout the day, with steady humidity and steady pressure. Winds out of the WSW at 9 mph 14 km/h.
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