The temperatures in Fullerton in May are comfortable with low of 14°C and and high up to 23°C.
The wather in Fullerton in May can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in Fullerton in May 2025.
If you’re planning to visit Fullerton in the near future, we highly recommend that you review the 14 day weather forecast for Fullerton before you arrive.
Temperatures
23° / 14°
Rainy Days
1
Snowy Days
0
Dry Days
30
Rainfall
7
mm
Sun Hours
10.3
Hrs