Best time to visit Rialto, CA

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

The most comfortable travel window in Rialto runs from October through June — 9 months of pleasant temperatures and modest rainfall.

January Good
High
69.5°F
Low
44.2°F
Precip
2.11 in

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

Daylight ≈ 9h 58m

February Good
High
69.9°F
Low
44.8°F
Precip
2.45 in

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

Daylight ≈ 10h 46m

March Good
High
72.3°F
Low
46.9°F
Precip
1.54 in

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

Daylight ≈ 11h 47m

April Good
High
75.1°F
Low
49.9°F
Precip
0.57 in

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

Daylight ≈ 12h 52m

May Good
High
80.4°F
Low
54.8°F
Precip
0.29 in

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

Daylight ≈ 13h 47m

June Good
High
87.4°F
Low
58.4°F
Precip
0.08 in

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

Daylight ≈ 14h 14m

July Hot
High
94.1°F
Low
62.9°F
Precip
0.03 in

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

Daylight ≈ 14h 4m

August Hot
High
96.6°F
Low
63.7°F
Precip
0.03 in

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

Daylight ≈ 13h 17m

September Hot
High
93.4°F
Low
60.8°F
Precip
0.23 in

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

Daylight ≈ 12h 12m

October Good
High
81.9°F
Low
54.8°F
Precip
0.40 in

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

Daylight ≈ 11h 7m

November Good
High
76.1°F
Low
47.4°F
Precip
0.68 in

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

Daylight ≈ 10h 11m

December Good
High
69.1°F
Low
43.2°F
Precip
1.51 in

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

Daylight ≈ 9h 44m

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