Fallbrook (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Fallbrook.
Climate overview of Fallbrook
The climate in Fallbrook, California, United States of America, sees a moderate range of temperatures across the year, from 30°C (86°F) in August down to 19°C (66°F) in December.
The city tends toward dry conditions, with around 306 mm (12 in) of rainfall per year. It does, however, have a distinct dry season from March to November, with very warm summers and pleasant winters. July is the sunniest month, averaging 12.3 hours of sunshine per day.
Fallbrook Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Fallbrook - and find the best time to visit.
Monthly Temperature in Fallbrook
The weather in Fallbrook changes moderately throughout the year, offering enough variation to appreciate each season. Typically, average maximum daytime temperatures range from a very warm 30°C (86°F) in August to a pleasant 19°C (66°F) in the coolest month, December.
Nights vary from 17°C (63°F) in August to around 8°C (46°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Fallbrook
Fallbrook's climate is marked by below-average rainfall, accumulating 306 mm (12 in) of precipitation yearly. The climate in Fallbrook shows significant variation throughout the year. Expect moderate rainfall in December, the wettest month, with an average of 83 mm (3.3 in) of precipitation over 8 rainy days.
In contrast, the driest month June offers drier and sunnier days, with around 0.4 mm (0.02 in) of rainfall over 0 rainy days. For more details, please visit our Fallbrook Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Fallbrook
For those who appreciate different seasons, Fallbrook serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 12.3 hours of sunshine daily, and embrace the darker days in January, offering only 6.6 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Fallbrook
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January, February, March, April, May, June, July, October and November
- Warmest weather: July, August and September
- Most sunshine: July and August
- Fewest rainy days: June, July, August and September
- Seasonal pattern: A distinct dry season from March to November, with very warm summers and pleasant winters
Frequently asked questions about the climate in Fallbrook
What is the best time to visit Fallbrook?
January, February, March, April, May, June, July, October and November typically offer the most optimal weather in Fallbrook. In contrast, August, September and December tend to have less optimal conditions. Fallbrook has a distinct dry season from March to November, with very warm summers and pleasant winters.
What temperatures can I expect in Fallbrook?
Daytime highs range from 19°C (66°F) in December to 30°C (86°F) in August. Nighttime lows range from 8°C (46°F) to 17°C (63°F).
How much rain does Fallbrook get?
Annual rainfall is around 306 mm (12 in). December is the wettest month with 83 mm (3.3 in), while June is the driest with 0.4 mm (0.02 in).
How sunny is Fallbrook?
Fallbrook receives around 3,279 hours of sunshine per year. July is the sunniest month with 369 hours, while January is the cloudiest with just 198 hours. Overall, Fallbrook enjoys abundant sunshine.
Fallbrook 3-Day Forecast
Fallbrook on the map
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