Current conditions at
Fontana-Arrow Highway (CQ057)
Lat: 34.10056°NLon: 117.49222°WElev: 1191.0ft.NA
85°F
29°C
| Humidity | 20% |
| Wind Speed | W 6 MPH |
| Barometer | NA |
| Dewpoint | 40°F (4°C) |
| Visibility | NA |
| Heat Index | 82°F (28°C) |
| Last update | 05 Sep 08:00 PM PDT |
Extended Forecast for
3 Miles S Rialto CA
Tonight

Low: 69 °F
Slight Chance
ShowersSunday

High: 83 °F
Showers
LikelySunday Night
Low: 69 °F
Slight Chance
Showers then
Partly CloudyLabor Day

High: 92 °F
Sunny
Monday Night

Low: 71 °F
Partly Cloudy
Tuesday

High: 94 °F
Mostly Sunny
Tuesday Night

Low: 73 °F
Partly Cloudy
Wednesday

High: 98 °F
Sunny
Wednesday Night

Low: 74 °F
Mostly Clear
Detailed Forecast
Tonight
A slight chance of showers after 11pm. Increasing clouds, with a low around 69. South wind around 5 mph becoming calm. Chance of precipitation is 20%.
Sunday
Showers likely, mainly before 11am. Cloudy, with a high near 83. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A slight chance of showers before 11pm. Partly cloudy, with a low around 69. West wind around 5 mph becoming calm. Chance of precipitation is 20%.
Labor Day
Sunny, with a high near 92. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 71. West wind around 5 mph becoming calm after midnight.
Tuesday
Mostly sunny, with a high near 94.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
Sunny, with a high near 98.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Sunny, with a high near 97.
Thursday Night
Mostly clear, with a low around 72.
Friday
Sunny, with a high near 94.
Friday Night
Mostly clear, with a low around 68.
Saturday
Sunny, with a high near 91.
Additional Forecasts and Information
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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)
1:35 pm PDT Sep 5, 2026
9pm PDT Sep 5, 2026-6pm PDT Sep 12, 2026


