Current conditions at
Ontario International Airport (KONT)
Lat: 34.05316°NLon: 117.57685°WElev: 906.0ft.
Overcast
63°F
17°C
| Humidity | 72% |
| Wind Speed | SW 11 MPH |
| Barometer | 29.75 in (1007.45 mb) |
| Dewpoint | 54°F (12°C) |
| Visibility | 10.00 mi |
| Last update | 17 May 08:35 PM PDT |
Extended Forecast for
3 Miles SSE Rancho Cucamonga CA
Tonight

Low: 55 °F
Patchy Fog
Monday

High: 81 °F
Sunny
Monday Night

Low: 55 °F
Mostly Clear
Tuesday

High: 86 °F
Sunny
Tuesday Night

Low: 58 °F
Mostly Clear
Wednesday

High: 87 °F
Sunny
Wednesday Night

Low: 58 °F
Mostly Clear
Thursday

High: 87 °F
Sunny
Thursday Night

Low: 58 °F
Clear
Detailed Forecast
Tonight
Patchy fog between 11pm and 2am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 55. Southwest wind 10 to 15 mph becoming light west. Winds could gust as high as 25 mph.
Monday
Sunny, with a high near 81. Northwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 55. West wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 25 mph.
Tuesday
Sunny, with a high near 86. Light and variable wind becoming north 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 58. West wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 87.
Thursday Night
Clear, with a low around 58.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 84.
Saturday Night
Clear, with a low around 58.
Sunday
Sunny, with a high near 83.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
3 Miles SSE Rancho Cucamonga CA
34.09°N 117.53°W (Elev. 1106 ft)
34.09°N 117.53°W (Elev. 1106 ft)
12:04 pm PDT May 17, 2026
8pm PDT May 17, 2026-6pm PDT May 24, 2026


