Best time to visit Fairfield, CA

A month-by-month travel weather guide based on NOAA 30-year climate normals.

The most comfortable travel window in Fairfield runs from January through June — 6 months of pleasant temperatures and modest rainfall.

January Good
High
56.6°F
Low
40.4°F
Precip
4.68 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 9h 37m

February Good
High
61.6°F
Low
42.9°F
Precip
4.97 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 10h 34m

March Good
High
66.4°F
Low
45.4°F
Precip
3.31 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 11h 45m

April Good
High
71.3°F
Low
47.9°F
Precip
1.47 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 13h 0m

May Excellent
High
77.8°F
Low
52.2°F
Precip
0.74 in

Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.

Daylight ≈ 14h 5m

June Good
High
85.4°F
Low
56.1°F
Precip
0.19 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 14h 37m

July Hot
High
89.6°F
Low
57.9°F
Precip
0.00 in

Summer heat. Avoid midday exertion; aim for morning and evening activities.

Daylight ≈ 14h 25m

August Hot
High
89.2°F
Low
58.0°F
Precip
0.03 in

Summer heat. Avoid midday exertion; aim for morning and evening activities.

Daylight ≈ 13h 29m

September Good
High
86.9°F
Low
56.6°F
Precip
0.08 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 12h 14m

October Excellent
High
78.2°F
Low
52.3°F
Precip
1.11 in

Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.

Daylight ≈ 10h 59m

November Good
High
65.6°F
Low
45.2°F
Precip
2.55 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 9h 53m

December Wet
High
56.7°F
Low
40.1°F
Precip
5.40 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 9h 21m

Looking for similar climates? See Fairfield's climate twins. Or jump straight to the full climate profile.