Hazardous Weather Conditions
Current conditions at
Fontana-Arrow Highway (CQ057)
Lat: 34.10056°NLon: 117.49222°WElev: 1191.0ft.NA
86°F
30°C
| Humidity | 44% |
| Wind Speed | SW 3 MPH |
| Barometer | NA |
| Dewpoint | 62°F (17°C) |
| Visibility | NA |
| Heat Index | 86°F (30°C) |
| Last update | 03 Aug 11:00 AM PDT |
Extended Forecast for
3 Miles S Rialto CA
Extreme Heat Warning August 3, 12:03pm until August 3, 08:00pm
NOW until 8:00pm Mon
Extreme Heat Warning
This Afternoon
High: 99 °F
Sunny
Tonight
Low: 70 °F
Clear
Tuesday
High: 99 °F
Sunny
Tuesday Night
Low: 69 °F
Clear
Wednesday
High: 98 °F
Sunny
Wednesday Night
Low: 68 °F
Mostly Clear
Thursday
High: 98 °F
Sunny
Thursday Night
Low: 70 °F
Mostly Clear
Detailed Forecast
This Afternoon
Sunny, with a high near 99. West wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 70. West wind 5 to 10 mph becoming light southwest in the evening.
Tuesday
Sunny, with a high near 99. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Clear, with a low around 69. West wind 5 to 10 mph becoming light southwest after midnight.
Wednesday
Sunny, with a high near 98. Light south wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 98.
Thursday Night
Mostly clear, with a low around 70.
Friday
Sunny, with a high near 100.
Friday Night
Mostly clear, with a low around 70.
Saturday
Sunny, with a high near 101.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Sunny, with a high near 99.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
11:27 am PDT Aug 3, 2026
12pm PDT Aug 3, 2026-6pm PDT Aug 9, 2026
Additional Resources
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