World Resorts USA Fontana Weather

Fontana weather in May

Weather in Fontana: May

Average day temperature: 77.4°F
Average night temperature: 56.5°F
Number of sunny days: 26 days
Day length: 13.6 - 14.3 hours
Number of rainy days: 0 days
Precipitation totals: 0.1 in.

Air temperature in May, °F

Show year:
2025
2024
2023

The highest day temperature during May of 2025 was 98°F. At the same time the lowest night temperature was 50°F. Daily and nightly averages during May were 76.4°F and 59.5°F.

Sunny, partly cloudy and cloudy days

Mostly all days in May are sunny but cloudy days are also possible.

Precipitation total in May, in.

Precipitation total value in Fontana in May is 0.1 in. Other months of the year show relatively similar values.

Wind speed in May, mph

The average wind speed value in May is 4.9 mph It makes May most windy month of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 11.7.

Best time for vacation in Fontana

Sunniest months:
July 30 days
June 28 days
August 28 days
Warmest months:
August 93.5 °F
July 92.9 °F
September 89.7 °F
Coldest months:
January 61.2 °F
March 62.3 °F
February 63.0 °F
Rainiest months:
January 2 days
February 2 days
March 2 days
Windiest months:
May 4.9 mph
June 4.8 mph
March 4.8 mph

Fontana on a weather map

Fontana
+54°F
S 8 mph
Feels like: +48°F
Precip.: 0%
Places in USA:
Name
°F
+48°F
+73°F
+73°F
+45°F
+52°F
+64°F
+64°F
+68°F
+36°F
+54°F
+46°F
+59°F
+59°F
+59°F
+30°F
24 Hours Forecast
Fontana
Local time: 22:41
December 29, monday
0000
54°F
S
8 mph
0300
54°F
S
10 mph
0600
45°F
S
11 mph
0900
45°F
S
10 mph
1200
57°F
S
13 mph
1500
61°F
S
14 mph
1800
54°F
S
11 mph
2100
48°F
SW
7 mph
Units of measurement: °C / °F