Climate and monthly weather forecast
Fallbrook, CA

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Weather in January

January, like December, in Fallbrook, California, is another comfortable winter month, with an average temperature fluctuating between 47.8°F (8.8°C) and 64.8°F (18.2°C). January's weather records an average high-temperature of a still enjoyable 64.8°F (18.2°C), showing little deviation from December. Weather in January »

Weather in February

February, the last month of the winter in Fallbrook, is also an enjoyable month, with an average temperature ranging between max 64°F (17.8°C) and min 46.9°F (8.3°C). With February's arrival, Fallbrook's weather records an average high-temperature of a still refreshing 64°F (17.8°C), marking little difference from January's 64.8°F (18.2°C). Weather in February »

Weather in March

March, the first month of the spring in Fallbrook, is also an enjoyable month, with an average temperature ranging between min 48.2°F (9°C) and max 66.6°F (19.2°C). March's weather records an average high-temperature of a still enjoyable 66.6°F (19.2°C), showing little deviation from February. Weather in March »

Weather in April

April in Fallbrook, California, is a pleasant spring month, with an average temperature fluctuating between 49.6°F (9.8°C) and 69.3°F (20.7°C). With the advent of April, Fallbrook experiences an average high-temperature of a pleasant 69.3°F (20.7°C), mirroring a close resemblance to the previous month. Weather in April »

Weather in May

The last month of the spring, May, is another pleasant month in Fallbrook, California, with temperature in the range of an average high of 71.2°F (21.8°C) and an average low of 52.5°F (11.4°C). Fallbrook, California, signifies an average high-temperature of a still agreeable 71.2°F (21.8°C) in May, closely mirroring the 69.3°F (20.7°C) of April. Weather in May »

Weather in June

June, the first month of the summer in Fallbrook, is a warm month, with an average temperature varying between 76.6°F (24.8°C) and 55.8°F (13.2°C). June's arrival coincides with a subtle temperature rise, moving from May's pleasant 71.2°F (21.8°C) to a moderately hot 76.6°F (24.8°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Fallbrook, California, with an average temperature varying between 81.7°F (27.6°C) and 61.3°F (16.3°C). July records an average high-temperature of a still moderately hot 81.7°F (27.6°C), indicating a minor variation from the preceding month. Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Fallbrook, California, with an average temperature fluctuating between 63°F (17.2°C) and 83.3°F (28.5°C). Temperature readings reach their annual highs in August, averaging 83.3°F (28.5°C) and a minimum average of 63°F (17.2°C). During August, the heat index is estimated at a tropical 86°F (30°C). Weather in August »

Weather in September

September, the first month of the autumn in Fallbrook, is also a moderately hot month, with an average temperature ranging between max 81.7°F (27.6°C) and min 61.9°F (16.6°C). September's weather displays an average high-temperature of a still warm 81.7°F (27.6°C), slightly varied from August's 83.3°F (28.5°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Fallbrook, California, with temperature in the range of an average high of 76.3°F (24.6°C) and an average low of 57.2°F (14°C). The shift from September to October coincides with a small decrease in the average high-temperature, down to a still moderately hot 76.3°F (24.6°C) from 81.7°F (27.6°C). Weather in October »

Weather in November

November, the last month of the autumn in Fallbrook, is another pleasant month, with an average temperature varying between 69.8°F (21°C) and 52°F (11.1°C). As Fallbrook enters November, the average high-temperature subtly lowers from the a warm 76.3°F (24.6°C) of October to an agreeable 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 an average temperature fluctuating between 46.9°F (8.3°C) and 63°F (17.2°C). December brings the lowest temperatures, with an average high of 63°F (17.2°C) and an average low of 46.9°F (8.3°C). Weather in December »
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Frequently asked questions

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.

When is Daylight Saving Time (DST) in Fallbrook?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

What is the most humid month in Fallbrook?

With an average relative humidity of 69%, May is the most humid month in Fallbrook.

What is the driest month in Fallbrook?

June is the month with the least rainfall. 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 in Fallbrook, with an average of 14h and 18min of daylight.

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

The months with the highest UV index are June through September, with an average maximum UV index of 6.

What is the month with the most sunshine in Fallbrook?

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

What time of the year is the hottest in Fallbrook?

In Fallbrook, the peak average temperatures are observed in August, with a high of 83.3°F (28.5°C) and a low of 63°F (17.2°C).

What is the least humid month in Fallbrook?

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

What are the coldest months in Fallbrook?

December is the month when Fallbrook sees the average lowest temperatures, with a high of 63°F (17.2°C) and a low of 46.9°F (8.3°C).

What is the wettest month in Fallbrook?

December is the month with the most rainfall in Fallbrook, California. 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 in Fallbrook, California, with an average of 10h and 0min of daylight.

What is the month with the least sunshine in Fallbrook?

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

When is the lowest UV index in Fallbrook?

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

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"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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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: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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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

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

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Fallbrook, California, USA

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