Monthly weather forecast and climate
Fallbrook, CA

Weather in January

January, like December, in Fallbrook, California, is another enjoyable winter month, with temperature in the range of an average low of 47.8°F (8.8°C) and an average high of 64.8°F (18.2°C). In Fallbrook, the average high-temperature is almost the same as in December - a still enjoyable 64.8°F (18.2°C). Weather in January »

Weather in February

The last month of the winter, February, is also an enjoyable month in Fallbrook, California, with temperature in the range of an average high of 64°F (17.8°C) and an average low of 46.9°F (8.3°C). In February, the average high-temperature is almost the same as in January - a still comfortable 64°F (17.8°C). Weather in February »

Weather in March

The first month of the spring, March, is also an enjoyable month in Fallbrook, California, with temperature in the range of an average low of 48.2°F (9°C) and an average high of 66.6°F (19.2°C). In March, the average high-temperature is essentially the same as in February - a still comfortable 66.6°F (19.2°C). Weather in March »

Weather in April

April in Fallbrook, California, is an agreeable spring month, with temperature in the range of an average high of 69.3°F (20.7°C) and an average low of 49.6°F (9.8°C). In Fallbrook, the average high-temperature in April is essentially the same as in March - a pleasant 69.3°F (20.7°C). Weather in April »

Weather in May

May, the last month of the spring, in Fallbrook, is another pleasant month, with average temperature fluctuating between 71.2°F (21.8°C) and 52.5°F (11.4°C). In Fallbrook, California, the average high-temperature in May is almost the same as in April - a still pleasant 71.2°F (21.8°C). Weather in May »

Weather in June

June, the first month of the summer, in Fallbrook, is a warm month, with temperature in the range of an average low of 55.8°F (13.2°C) and an average high of 76.6°F (24.8°C). In Fallbrook, the average high-temperature marginally rises, from a pleasant 71.2°F (21.8°C) in May, to a moderately hot 76.6°F (24.8°C). Weather in June »

Weather in July

July, like June, in Fallbrook, California, is a moderately hot summer month, with average temperature varying between 61.3°F (16.3°C) and 81.7°F (27.6°C). In July, the average high-temperature is almost the same as in June - a still warm 81.7°F (27.6°C). Weather in July »

Weather in August

August, the last month of the summer, in Fallbrook, is another warm month, with average temperature ranging between max 83.3°F (28.5°C) and min 63°F (17.2°C). The warmest month is August, with an average high-temperature of 83.3°F (28.5°C) and an average low-temperature of 63°F (17.2°C). The average heat index is estimated at a hot 86.5°F (30.3°C). Weather in August »

Weather in September

September, the first month of the autumn, in Fallbrook, is also a moderately hot month, with temperature in the range of an average high of 81.7°F (27.6°C) and an average low of 61.9°F (16.6°C). In September, the average high-temperature is essentially the same as in August - a still moderately hot 81.7°F (27.6°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Fallbrook, California, with average temperature ranging between min 57.2°F (14°C) and max 76.3°F (24.6°C). In October, the average high-temperature slightly decreases, from 81.7°F (27.6°C) in September, to a still warm 76.3°F (24.6°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an agreeable month in Fallbrook, California, with average temperature varying between 69.8°F (21°C) and 52°F (11.1°C). In November, the average high-temperature slightly decreases, from a warm 76.3°F (24.6°C) in October, to a pleasant 69.8°F (21°C). Weather in November »

Weather in December

December, the first month of the winter, in Fallbrook, is also an enjoyable month, with average temperature fluctuating between 46.9°F (8.3°C) and 63°F (17.2°C). December is the coldest month, with an average high-temperature of 63°F (17.2°C) and an average low-temperature of 46.9°F (8.3°C). Weather in December »
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FAQ

How much does it rain in Fallbrook?

In Fallbrook, during the entire year, the rain falls for 63.6 days and collects up to 8.98" (228mm) of precipitation.

What is the most humid month in Fallbrook?

The most humid month in Fallbrook, California, is May, with an average relative humidity of 69%.

What is the driest month in Fallbrook?

June is the month with the least rainfall in Fallbrook. Rain falls for 1.2 days and accumulates 0.04" (1mm) of precipitation.

When are the longest days in Fallbrook?

June has the longest days of the year, with an average of 14.3h of daylight.

What is the month with the highest UV index in Fallbrook?

Months with the highest UV index in Fallbrook are June through September, with an average maximum UV index of 6.

What are the months with the most sunshine in Fallbrook?

July and August, with an average of 12h of sunshine, are months with the most sunshine in Fallbrook, California.

What is the warmest month in Fallbrook?

With an average high-temperature of 83.3°F (28.5°C) and an average low-temperature of 63°F (17.2°C), August is the warmest month in Fallbrook, California.

What is the least humid month in Fallbrook?

With an average relative humidity of 55%, November is the least humid month.

What is the coldest month in Fallbrook?

December is the coldest month, with an average high-temperature of 63°F (17.2°C) and an average low-temperature of 46.9°F (8.3°C).

What is the rainiest month in Fallbrook?

December is the month with the most rainfall. Rain falls for 7.2 days and accumulates 1.85" (47mm) of precipitation.

What is the month with the shortest days in Fallbrook?

December has the shortest days of the year, with an average of 10h of daylight.

What is the month with the least sunshine in Fallbrook?

December has the least sunshine of the year in Fallbrook, with an average of 6.6h of sunshine.

When is the lowest UV index in Fallbrook?

With an average maximum UV index of 3, December is the month with the lowest UV index in Fallbrook.

Average temperature
Fallbrook, CA

Average temperature - Fallbrook, CA

The warmest month (with the highest average high temperature) is August (83.3°F).
The month with the lowest average high temperature is December (63°F).

The month with the highest average low temperature is August (63°F).
The coldest months (with the lowest average low temperature) are February and December (46.9°F).

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Average pressure
Fallbrook, CA

Average pressure - Fallbrook, CA

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.87").

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Average wind speed
Fallbrook, CA

Average wind speed - Fallbrook, CA

The windiest months (with the highest average wind speed) are April and May (5.5mph).
The calmest month (with the lowest average wind speed) is October (4.3mph).

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Average rainfall
Fallbrook, CA

Average rainfall - Fallbrook, CA

The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days
Fallbrook, CA

Average rainfall days - Fallbrook, CA

The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (1.2 days).

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Average daylight / Average sunshine
Fallbrook, CA

Average daylight / Average sunshine - Fallbrook, CA

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.6h).

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Average sunshine days
Fallbrook, CA

Average sunshine days - Fallbrook, CA

The month with the most sunshine days is June (25.8 days).
The month with the least sunshine days is February (20 days).

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Average visibility
Fallbrook, CA

Average visibility - Fallbrook, CA

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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