Climate and monthly weather forecastFallbrook, CA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another enjoyable winter month in Fallbrook, California, with an average temperature varying between 64.8°F (18.2°C) and 47.8°F (8.8°C). Fallbrook's weather, upon January's arrival, documents an average high-temperature of a still enjoyable 64.8°F (18.2°C), nearly identical to the prior month. Weather in January »Weather in February
February, the last month of the winter in Fallbrook, is another comfortable month, with an average temperature ranging between max 64°F (17.8°C) and min 46.9°F (8.3°C). February denotes a minimal variation in the average high-temperature to a still comfortable 64°F (17.8°C) from January's 64.8°F (18.2°C). Weather in February »Weather in March
The first month of the spring, March, is still a comfortable month in Fallbrook, California, with temperature in the range of an average high of 66.6°F (19.2°C) and an average low of 48.2°F (9°C). The transition into March marks the average high-temperature at a still enjoyable 66.6°F (19.2°C), differing minimally from February's 64°F (17.8°C). Weather in March »Weather in April
April in Fallbrook, California, is a pleasant spring month, with an average temperature varying between 49.6°F (9.8°C) and 69.3°F (20.7°C). Fallbrook records an average high-temperature of an agreeable 69.3°F (20.7°C) as April arrives, nearly mirroring the previous month's climate. Weather in April »Weather in May
The last month of the spring, May, is also an agreeable 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). The average high-temperature for May is a still pleasant 71.2°F (21.8°C), closely aligning with the temperature of the preceding month. 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). The start of June signals a slight increase in the average high-temperature, moving from an agreeable 71.2°F (21.8°C) in May to a warm 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 an average temperature ranging between max 81.7°F (27.6°C) and min 61.3°F (16.3°C). July's arrival shows an average high-temperature of a still warm 81.7°F (27.6°C), hardly different from the previous 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 varying between 83.3°F (28.5°C) and 63°F (17.2°C). In Fallbrook, August is identified by the highest average temperatures, reaching a peak of 83.3°F (28.5°C) and a low of 63°F (17.2°C). August's heat index is computed to be a tropical 86°F (30°C). Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Fallbrook, California, with an average temperature varying between 61.9°F (16.6°C) and 81.7°F (27.6°C). Entering September, Fallbrook's average high-temperature reads a still moderately hot 81.7°F (27.6°C), indicating a close resemblance to the previous month's climate. Weather in September »Weather in October
October, like September, in Fallbrook, California, is another warm autumn month, with an average temperature ranging between max 76.3°F (24.6°C) and min 57.2°F (14°C). In Fallbrook, the average high-temperature in October slightly decreases from 81.7°F (27.6°C) in September to a still moderately hot 76.3°F (24.6°C). Weather in October »Weather in November
November, the last month of the autumn in Fallbrook, is also an agreeable month, with temperature in the range of an average low of 52°F (11.1°C) and an average high of 69.8°F (21°C). The arrival of November corresponds with a light shift in temperature, down from a moderately hot 76.3°F (24.6°C) in 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 still a refreshing month, with an average temperature fluctuating between 63°F (17.2°C) and 46.9°F (8.3°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 »Updated: Aug 8, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Fallbrook, during the entire year, the rain falls for 63.6 days and collects up to 8.98" (228mm) of precipitation.
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.
The most humid month is May, with an average relative humidity of 69%.
The month with the least rainfall is June, when the rain falls for 1.2 days and typically collects 0.04" (1mm) of precipitation.
June has the longest days of the year, with an average of 14h and 18min of daylight.
The months with the highest UV index are June through September, with an average maximum UV index of 6.
The months with the most sunshine are July and August, with an average of 12h of sunshine.
Fallbrook experiences its average highest temperatures in August, reaching a peak of 83.3°F (28.5°C) and a minimum of 63°F (17.2°C).
November is the least humid month in Fallbrook, with an average relative humidity of 55%.
In Fallbrook, the average lowest temperatures are observed in December, with a high of 63°F (17.2°C) and a low of 46.9°F (8.3°C).
December is the month with the most rainfall. Rain falls for 7.2 days and accumulates 1.85" (47mm) of precipitation.
With an average of 10h and 0min of daylight, December has the shortest days of the year.
With an average of 6.6h of sunshine, December has the least sunshine of the year.
December is the month with the lowest UV index, with an average maximum UV index of 3.
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).
Average pressure
Fallbrook, CA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.04"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.9"Hg - Average pressure in August:
29.88"Hg - Average pressure in September:
29.88"Hg - Average pressure in October:
29.93"Hg - Average pressure in November:
30.02"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed
Fallbrook, CA
- Average wind speed in January:
4.9mph - Average wind speed in February:
5mph - Average wind speed in March:
5.1mph - Average wind speed in April:
5.5mph - Average wind speed in May:
5.5mph - Average wind speed in June:
4.9mph
- Average wind speed in July:
4.7mph - Average wind speed in August:
4.5mph - Average wind speed in September:
4.4mph - Average wind speed in October:
4.3mph - Average wind speed in November:
4.7mph - Average wind speed in December:
4.8mph
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).
Average humidity
Fallbrook, CA
The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is November (55%).
Average rainfall
Fallbrook, CA
- Average rainfall in January:
1.14" - Average rainfall in February:
1.57" - Average rainfall in March:
0.91" - Average rainfall in April:
0.75" - Average rainfall in May:
0.35" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.39" - Average rainfall in August:
0.31" - Average rainfall in September:
0.31" - Average rainfall in October:
0.39" - Average rainfall in November:
0.94" - Average rainfall in December:
1.85"
The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
Fallbrook, CA
- Average rainfall days in January:
6.2 days - Average rainfall days in February:
7.2 days - Average rainfall days in March:
8.3 days - Average rainfall days in April:
7.1 days - Average rainfall days in May:
4.8 days - Average rainfall days in June:
1.2 days
- Average rainfall days in July:
4.8 days - Average rainfall days in August:
3.6 days - Average rainfall days in September:
4.4 days - Average rainfall days in October:
4.2 days - Average rainfall days in November:
4.6 days - Average rainfall days in December:
7.2 days
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).
Average daylight / Average sunshine
Fallbrook, CA
- Average daylight in January:
10h and 12min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 18min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 18min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - Average daylight in December:
10h and 0min
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).
- Average sunshine in January:
6h and 48min - Average sunshine in February:
6h and 48min - Average sunshine in March:
8h and 36min - Average sunshine in April:
10h and 54min - Average sunshine in May:
11h and 12min - Average sunshine in June:
11h and 54min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 30min - Average sunshine in October:
8h and 54min - Average sunshine in November:
7h and 12min - Average sunshine in December:
6h and 36min
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).
Average sunshine days
Fallbrook, CA
- Average sunshine days in January:
23.9 days - Average sunshine days in February:
20 days - Average sunshine days in March:
21.3 days - Average sunshine days in April:
21.5 days - Average sunshine days in May:
22.2 days - Average sunshine days in June:
25.8 days
- Average sunshine days in July:
22.3 days - Average sunshine days in August:
24.8 days - Average sunshine days in September:
22.5 days - Average sunshine days in October:
24.5 days - Average sunshine days in November:
23.4 days - Average sunshine days in December:
22.2 days
The month with the most sunshine days is June (25.8 days).
The month with the least sunshine days is February (20 days).
Average UV index
Fallbrook, CA
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
Fallbrook, CA
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 6).
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).
