Fairfield, CA Weather & Climate Normals
Fairfield's real weather, in one number
Fairfield, CA scores 77/100 on this site's reading of NOAA's own 30-year normals: mild with real seasons. A solid stretch of comfortable months alongside a noticeable but not extreme summer or winter. 9 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Fairfield's hottest and coldest months
Fairfield's hottest month is Jul, averaging 74°F; its coldest is Dec, averaging 48°F, a 25.4°F swing across the year, a middling gap by national standards.
Fairfield's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 57°F | 40°F | 4.68in | 0in |
| Feb | 62°F | 43°F | 4.97in | 0in |
| Mar | 66°F | 45°F | 3.31in | 0in |
| Apr | 71°F | 48°F | 1.47in | 0in |
| May | 78°F | 52°F | 0.74in | 0in |
| Jun | 85°F | 56°F | 0.19in | 0in |
| Jul | 90°F | 58°F | 0in | 0in |
| Aug | 89°F | 58°F | 0.03in | 0in |
| Sep | 87°F | 57°F | 0.08in | 0in |
| Oct | 78°F | 52°F | 1.11in | 0in |
| Nov | 66°F | 45°F | 2.55in | 0in |
| Dec | 57°F | 40°F | 5.4in | 0in |
most of the year (9 of 12 months) are the best time to see Fairfield at its mildest; the rest of the year, plan around Dec's cold.
Rain and snow in Fairfield
Fairfield averages 24.53in of precipitation a year across roughly 59 days with measurable rain or snow, and 0in of snow a year.
Where Fairfield ranks
Fairfield ranks 166 of 4876 US cities in this dataset for comfort score, and 166 of 429 within CA. About 122,646 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Fairfield, CA US, 2.1 miles from Fairfield, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station