Best time to visit San Dimas, CA
A month-by-month travel weather guide based on NOAA 30-year climate normals.
The most comfortable travel window in San Dimas runs from October through June — 9 months of pleasant temperatures and modest rainfall.
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 9h 58m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 10h 46m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 11h 47m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 12h 52m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 13h 47m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 14h 14m
Summer heat. Avoid midday exertion; aim for morning and evening activities.
Daylight ≈ 14h 4m
Summer heat. Avoid midday exertion; aim for morning and evening activities.
Daylight ≈ 13h 17m
Summer heat. Avoid midday exertion; aim for morning and evening activities.
Daylight ≈ 12h 12m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 11h 7m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 10h 11m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 9h 44m
Looking for similar climates? See San Dimas's climate twins. Or jump straight to the full climate profile.