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City briefing

Fairfield

California, United States · 145,000 people
Jan
Feb
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Apr
May
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The year’s records
Annual mean 16°C · wettest around January · prevailing wind W
Warmest
27.8 °C
Coldest
11.6 °C
Wettest
27%
Windiest
4.9 m/s
Prevailing
W
4.0 m/s average

When this place is good five ratings · thirty-six ten-day sections · click a cell to read it

never good
Jan
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Every reading

bars actual · line feels-like, °C
0510152025JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember0510152025JFMAMJJASOND

The average temperature in Fairfield over the whole year is 16°C. July is the hottest month, with highs of about 27°C; December is the coldest, with lows of about 7°C.

Month by month Fairfield climate by month: average temperatures year round · click a month to read it

MonthHighLowFeels likeChance of rainCloudWindBeing outsideSunWalking
January13°C7°C10°C28%41%2.5 m/s11076
February14°C7°C11°C27%26%2.9 m/s25077
March16°C8°C13°C28%35%3.2 m/s34182
April19°C10°C17°C20%21%3.6 m/s65981
May22°C13°C20°C20%17%4.3 m/s722366
June26°C16°C24°C9%8%4.6 m/s674443
July27°C16°C26°C7%7%4.6 m/s585431
August27°C16°C26°C8%10%4.3 m/s585629
September26°C15°C25°C10%11%3.5 m/s684740
October23°C13°C21°C18%13%2.8 m/s792367
November17°C8°C14°C23%26%2.2 m/s43188
December12°C7°C10°C28%38%2.4 m/s10076

High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.

Seasons, and the year in short Fairfield weather by season

Year round, Fairfield has days of about 12°C at their warmest in December, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from 7°C to 16°C through the year, and the average temperature over the year is 16°C around the clock. Rain is most likely around January and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.

Fairfield weather in winterDecember to February

High 13°CLow 7°CRain 28%

Winter in Fairfield has typical daily highs of about 13°C and lows of about 7°C, with a 28% chance of rain on a given day.

Fairfield weather in springMarch to May

High 19°CLow 11°CRain 23%

Spring in Fairfield has typical daily highs of about 19°C and lows of about 11°C, with a 23% chance of rain on a given day.

Fairfield weather in summerJune to August

High 27°CLow 16°CRain 8%

Summer in Fairfield has typical daily highs of about 27°C and lows of about 16°C, with a 8% chance of rain on a given day.

Fairfield weather in autumnSeptember to November

High 22°CLow 12°CRain 17%

Autumn in Fairfield has typical daily highs of about 22°C and lows of about 12°C, with a 17% chance of rain on a given day.

When is the rainy season in Fairfield?

The rainy (wet) season in Fairfield runs from October to May, peaking in January with a 28% chance of rain on a given day. The dry season is June to September; July is the driest month, at 7%.

What time of year is Fairfield windiest?

Winds in Fairfield are highest in June, averaging 4.6 m/s (17 km/h), and lightest in November, at 2.2 m/s (8 km/h). The prevailing wind is from the W.

What is the average temperature in Fairfield year round?

The average temperature in Fairfield over the whole year is 16°C. July is the hottest month, with highs of about 27°C; December is the coldest, with lows of about 7°C.

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