Current conditions at
Fontana-Arrow Highway (CQ057)
Lat: 34.10056°NLon: 117.49222°WElev: 1191.0ft.NA
78°F
26°C
| Humidity | 55% |
| Wind Speed | WSW 8 MPH |
| Barometer | NA |
| Dewpoint | 61°F (16°C) |
| Visibility | NA |
| Heat Index | 79°F (26°C) |
| Last update | 12 Aug 08:00 PM PDT |
Extended Forecast for
3 Miles S Rialto CA
Tonight

Low: 65 °F
Mostly Cloudy
Thursday
High: 87 °F
Patchy Dense
Fog then
Mostly CloudyThursday Night

Low: 63 °F
Cloudy
Friday
High: 87 °F
Patchy Fog
then SunnyFriday Night

Low: 63 °F
Clear
Saturday

High: 90 °F
Sunny
Saturday Night

Low: 64 °F
Mostly Clear
Sunday

High: 92 °F
Sunny
Sunday Night

Low: 65 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly cloudy, with a low around 65. Southwest wind around 5 mph.
Thursday
Patchy dense fog before 11am. Otherwise, mostly cloudy, with a high near 87. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Cloudy, with a low around 63. West wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 87. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Clear, with a low around 63. Southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 65.
Monday
Mostly sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 67.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Sunny, with a high near 94.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
3 Miles S Rialto CA
34.08°N 117.4°W (Elev. 1125 ft)
34.08°N 117.4°W (Elev. 1125 ft)
12:36 pm PDT Aug 12, 2026
9pm PDT Aug 12, 2026-6pm PDT Aug 19, 2026


