Expand
Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January in Fairfield, California, is a refreshing winter month, with an average temperature fluctuating between 56.1°F (13.4°C) and 41.5°F (5.3°C). Fairfield experiences an average high-temperature of a mild 56.1°F (13.4°C) with the onset of January, subtly varied from December's 54.9°F (12.7°C). Weather in January »
Weather in February
February, the last month of the winter in Fairfield, is also a moderate month, with an average temperature ranging between max 59.5°F (15.3°C) and min 41.9°F (5.5°C). Fairfield starts February with an average high-temperature of a still refreshing 59.5°F (15.3°C), a minor shift from January's 56.1°F (13.4°C). Weather in February »
Weather in March
March, the first month of the spring in Fairfield, is an enjoyable month, with temperature in the range of an average low of 43.3°F (6.3°C) and an average high of 62.8°F (17.1°C). The ushering in of March brings an average high-temperature of a comfortable 62.8°F (17.1°C), closely mirroring the 59.5°F (15.3°C) of February. Weather in March »
Weather in April
April in Fairfield, California, is an agreeable spring month, with an average temperature varying between 45.9°F (7.7°C) and 68.7°F (20.4°C). The transition from March to April brings a subtle temperature rise, with average high-temperatures increasing from a refreshing 62.8°F (17.1°C) to a pleasant 68.7°F (20.4°C). Weather in April »
Weather in May
May, the last month of the spring in Fairfield, is a moderately hot month, with an average temperature ranging between max 74.8°F (23.8°C) and min 49.8°F (9.9°C). Fairfield's transition into May is noticed by a slight rise in the average high-temperature, advancing from a pleasant 68.7°F (20.4°C) in April to a warm 74.8°F (23.8°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in Fairfield, California, with temperature in the range of an average low of 55°F (12.8°C) and an average high of 83.7°F (28.7°C). June's onset brings a subtle temperature rise, moving from 74.8°F (23.8°C) in May to a still moderately hot 83.7°F (28.7°C). Weather in June »
Weather in July
July in Fairfield, California, is a hot summer month, with an average temperature ranging between max 87.4°F (30.8°C) and min 56.1°F (13.4°C). With average temperatures fluctuating between a high of 87.4°F (30.8°C) and a low of 56.1°F (13.4°C), July stands out as the warmest month. During July, the heat index is appraised at a tropical 91.4°F (33°C). Weather in July »
Weather in August
August, the last month of the summer in Fairfield, is another tropical month, with temperature in the range of an average high of 86.7°F (30.4°C) and an average low of 57°F (13.9°C). August ushers in an average high-temperature of a still tropical 86.7°F (30.4°C), aligning closely with the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Fairfield, California, with an average temperature ranging between max 85.1°F (29.5°C) and min 57.6°F (14.2°C). The advent of September brings an average high-temperature of a warm 85.1°F (29.5°C), exhibiting minor difference from the previous month. Weather in September »
Weather in October
October, like September, in Fairfield, California, is a moderately hot autumn month, with temperature in the range of an average low of 53.6°F (12°C) and an average high of 75.6°F (24.2°C). The arrival of October indicates a decrease in the average high-temperature, moving from a moderately hot 85.1°F (29.5°C) in September to a still warm 75.6°F (24.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Fairfield, is also an enjoyable month, with an average temperature varying between 63.3°F (17.4°C) and 46.4°F (8°C). The average high-temperature decreases in November, shifting from a moderately hot 75.6°F (24.2°C) in October to an enjoyable 63.3°F (17.4°C). Weather in November »
Weather in December
December, the first month of the winter in Fairfield, is still a cool month, with an average temperature ranging between min 41.7°F (5.4°C) and max 54.9°F (12.7°C). December is the month when Fairfield experiences its coldest temperatures, averaging a high of 54.9°F (12.7°C) and a low of 41.7°F (5.4°C). Weather in December »
Updated: Jul 7, 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
How many days does it rain?
Throughout the year, there are 71.4 rainfall days, and 12.13" (308mm) of precipitation is accumulated.
What are the months with the lowest UV index?
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
What is the rainiest month?
The month with the most rainfall is February, when the rain falls for 9 days and typically aggregates up to 2.4" (61mm) of precipitation.
What is the most humid month?
March is the most humid month in Fairfield, California, with an average relative humidity of 75%.
When is Daylight Saving Time (DST)?
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.
When are the longest days?
The month with the longest days in Fairfield is June, with an average of 14h and 48min of daylight.
When is the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What time of the year is the hottest?
During the warmest month in Fairfield, July, temperatures average a high of 87.4°F (30.8°C) and a low of 56.1°F (13.4°C).
What month has the most sunshine?
The month with the most sunshine in Fairfield is July, with an average of 12.1h of sunshine.
What is the driest month?
August is the only month when rain does not fall.
What is the least humid month?
The least humid month is September, with an average relative humidity of 52%.
When does it rain?
Months with rainfall are January through July, September through December.
What month is the coldest?
Fairfield experiences its lowest temperatures in December, with an average peak of 54.9°F (12.7°C) and a low of 41.7°F (5.4°C).
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 36min of daylight.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 5.7h of sunshine.
Average temperature
Fairfield, CA
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is December (54.9°F).
The month with the highest average low temperature is September (57.6°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure
Fairfield, CA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed
Fairfield, CA
- Average wind speed in January:
4.5mph - Average wind speed in February:
5.5mph - Average wind speed in March:
5.7mph - Average wind speed in April:
6.3mph - Average wind speed in May:
7mph - Average wind speed in June:
7mph
- Average wind speed in July:
7mph - Average wind speed in August:
6.6mph - Average wind speed in September:
5.6mph - Average wind speed in October:
5.2mph - Average wind speed in November:
4.5mph - Average wind speed in December:
4.8mph
The windiest months (with the highest average wind speed) are May, June and July (7mph).
The calmest months (with the lowest average wind speed) are January and November (4.5mph).
Average humidity
Fairfield, CA
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (52%).
Average rainfall
Fairfield, CA
- Average rainfall in January:
2.2" - Average rainfall in February:
2.4" - Average rainfall in March:
2.09" - Average rainfall in April:
0.79" - Average rainfall in May:
0.59" - Average rainfall in June:
0.08"
The wettest month (with the highest rainfall) is February (2.4").
The driest month (with the least rainfall) is August (0").
Average rainfall days
Fairfield, CA
- Average rainfall days in January:
9.4 days - Average rainfall days in February:
9 days - Average rainfall days in March:
12.9 days - Average rainfall days in April:
7.9 days - Average rainfall days in May:
4.6 days - Average rainfall days in June:
1.9 days
- Average rainfall days in July:
1.1 days - Average rainfall days in August:
0.7 days - Average rainfall days in September:
1.7 days - Average rainfall days in October:
4.6 days - Average rainfall days in November:
7.4 days - Average rainfall days in December:
10.2 days
The month with the highest number of rainy days is March (12.9 days).
The month with the least rainy days is August (0.7 days).
Average daylight / Average sunshine
Fairfield, CA
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 3min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
5h and 5min - Average sunshine in February:
6h and 0min - Average sunshine in March:
7h and 4min - Average sunshine in April:
10h and 1min - Average sunshine in May:
10h and 5min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
12h and 1min - Average sunshine in August:
12h and 0min - Average sunshine in September:
11h and 1min - Average sunshine in October:
7h and 1min - Average sunshine in November:
6h and 3min - Average sunshine in December:
5h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days
Fairfield, CA
- Average sunshine days in January:
20.6 days - Average sunshine days in February:
18.5 days - Average sunshine days in March:
17 days - Average sunshine days in April:
20.7 days - Average sunshine days in May:
25.6 days - Average sunshine days in June:
28 days
- Average sunshine days in July:
29.9 days - Average sunshine days in August:
30.2 days - Average sunshine days in September:
27.5 days - Average sunshine days in October:
25.8 days - Average sunshine days in November:
21.8 days - Average sunshine days in December:
19.9 days
The month with the most sunshine days is August (30.2 days).
The month with the least sunshine days is March (17 days).
Average UV index
Fairfield, CA
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover
Fairfield, CA
The months with the most cloud cover are March and December (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility
Fairfield, 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).
Fairfield, California, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location