Best time to visit Clearlake, CA

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

The most comfortable travel window in Clearlake runs from April through June — 3 months of pleasant temperatures and modest rainfall.

January Wet
High
54.8°F
Low
32.6°F
Precip
6.19 in

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

Daylight ≈ 9h 33m

February Wet
High
57.7°F
Low
33.7°F
Precip
6.15 in

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

Daylight ≈ 10h 32m

March Cool
High
61.6°F
Low
35.4°F
Precip
3.99 in

Mild but on the chilly side. Pack a jacket; great for hiking and city walks.

Daylight ≈ 11h 44m

April Good
High
66.4°F
Low
39.3°F
Precip
1.99 in

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

Daylight ≈ 13h 2m

May Good
High
72.5°F
Low
45.0°F
Precip
1.16 in

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

Daylight ≈ 14h 8m

June Good
High
83.2°F
Low
51.5°F
Precip
0.23 in

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

Daylight ≈ 14h 41m

July Hot
High
91.4°F
Low
55.9°F
Precip
0.01 in

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

Daylight ≈ 14h 29m

August Hot
High
90.5°F
Low
54.3°F
Precip
0.09 in

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

Daylight ≈ 13h 32m

September Good
High
85.4°F
Low
50.3°F
Precip
0.17 in

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

Daylight ≈ 12h 14m

October Good
High
75.4°F
Low
43.2°F
Precip
0.91 in

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

Daylight ≈ 10h 57m

November Cool
High
63.4°F
Low
35.6°F
Precip
2.89 in

Mild but on the chilly side. Pack a jacket; great for hiking and city walks.

Daylight ≈ 9h 50m

December Wet
High
54.8°F
Low
32.6°F
Precip
6.08 in

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

Daylight ≈ 9h 17m

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