May weather forecastFairfield, CA
May
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).Temperature
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). Fairfield documents a significant temperature variance in May, with the mean nighttime lows settling at a frosty 49.8°F (9.9°C).Humidity
In Fairfield, the average relative humidity in May is 62%.Rainfall
In Fairfield, in May, it is raining for 4.6 days, with typically 0.59" (15mm) of accumulated precipitation. Throughout the year, there are 71.4 rainfall days, and 12.13" (308mm) of precipitation is accumulated.Daylight
The average length of the day in May is 14h and 16min.On the first day of the month, sunrise is at 6:10 am and sunset at 7:59 pm. On the last day of May, sunrise is at 5:46 am and sunset at 8:25 pm PDT.
Sunshine
In Fairfield, the average sunshine in May is 10.9h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 5 in May translates into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Fairfield, CA
- Average high temperature in May: 74.8°F
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).
- Average low temperature in May: 49.8°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 in May
Fairfield, CA
- Average pressure in May: 29.97"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 in May
Fairfield, CA
- Average wind speed in May: 7mph
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 in May
Fairfield, CA
- Average humidity in May: 62%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (52%).
Average rainfall in May
Fairfield, CA
- Average rainfall in May: 0.59"
The wettest month (with the highest rainfall) is February (2.4").
The driest month (with the least rainfall) is August (0").
Average rainfall days in May
Fairfield, CA
- Average rainfall days in May: 4.6 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 in May /
Average sunshine in May
Fairfield, CA
- Average daylight in May: 14h and 18min
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 May: 10h and 54min
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 in May
Fairfield, CA
- Average sunshine days in May: 25.6 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 in May
Fairfield, CA
- Average UV index in May: 5
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 in May
Fairfield, CA
- Average cloud cover in May: 21
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 in May
Fairfield, CA
- Average visibility in May: 6mi
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).
