Fontana, CA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Fontana, CA in one place.
Mostly sunny, with a high near 94. Southwest wind 0 to 10 mph, with gusts as high as 25 mph.
Local Weather Overview
This forecast page for Fontana, CA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 11, 2026 11:57 PM PDT.
The active forecast window currently covers Jul 12 to Jul 18, 2026 for Fontana, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 12 to Jul 18, 2026
- Latest sync
- Jul 11, 2026 11:57 PM PDT
- Forecast office
- SGX
- Source
- NOAA / NWS
Daily Outlook
This Week in Fontana
Wednesday looks like the warmest upcoming period in Fontana at 103 degrees F.
Sunday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Thursday at about 0 to 15 mph SW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 11, 2026 11:57 PM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- SGX
- Radar station
- KSOX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a low around 66. Southwest wind 0 to 10 mph, with gusts as high as 25 mph.
Mostly sunny, with a high near 94. Southwest wind 0 to 10 mph, with gusts as high as 25 mph.
Partly cloudy, with a low around 67. West wind 0 to 10 mph, with gusts as high as 25 mph.
Sunny, with a high near 98.
Mostly clear, with a low around 71.
Sunny, with a high near 103.
Mostly clear, with a low around 72.
Sunny, with a high near 99.
Mostly clear, with a low around 68.
A slight chance of rain showers between 11am and 5pm. Mostly sunny, with a high near 93.
A slight chance of rain showers between 11pm and 5am. Partly cloudy, with a low around 67.
Sunny, with a high near 92.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Jul 12
|
Mostly Sunny
|
94°F |
0 to 10 mph
SW
|
|
Sunday Night
Jul 12
|
Mostly Cloudy
|
66°F |
0 to 10 mph
SW
|
|
Monday
Jul 13
|
Mostly Sunny
|
94°F |
0 to 10 mph
SW
|
|
Monday Night
Jul 13
|
Partly Cloudy
|
67°F |
0 to 10 mph
W
|
|
Tuesday
Jul 14
|
Sunny
|
98°F |
0 to 10 mph
SW
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
71°F |
0 to 10 mph
W
|
|
Wednesday
Jul 15
|
Sunny
|
103°F |
0 to 10 mph
W
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
72°F |
0 to 10 mph
W
|
|
Thursday
Jul 16
|
Sunny
|
99°F |
0 to 15 mph
SW
|
|
Thursday Night
Jul 16
|
Mostly Clear
|
68°F |
0 to 15 mph
SW
|
|
Friday
Jul 17
|
Slight Chance Rain Showers
|
93°F |
0 to 10 mph
SW
|
|
Friday Night
Jul 17
|
Slight Chance Rain Showers
|
67°F |
0 to 10 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
92°F |
0 to 15 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fontana.
