Ontario International Airport Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Ontario International Airport in one place.
Mostly sunny, with a high near 82. Southwest wind 0 to 10 mph, with gusts as high as 20 mph.
Local Weather Overview
This forecast page for Ontario International Airport 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 1, 2026 7:00 PM PDT.
The active forecast window currently covers Jul 2 to Jul 7, 2026 for Ontario International Airport.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 2 to Jul 7, 2026
- Latest sync
- Jul 1, 2026 7:00 PM PDT
- Forecast office
- SGX
- Source
- NOAA / NWS
Daily Outlook
This Week in Ontario International Airport
Tuesday looks like the warmest upcoming period in Ontario International Airport at 89 degrees F.
Friday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Friday at about 0 to 15 mph SW.
The forecast from Jul 2 through Jul 7 stays mostly dry.
Forecast Details
- Last updated
- Jul 1, 2026 7:00 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 clear, with a low around 60. Southwest wind 0 to 10 mph, with gusts as high as 20 mph.
Patchy fog between 8am and 11am. Sunny, with a high near 85. Southwest wind 0 to 15 mph, with gusts as high as 25 mph.
Partly cloudy, with a low around 59.
Mostly sunny, with a high near 87.
Mostly clear, with a low around 60.
Sunny, with a high near 86.
Mostly clear, with a low around 60.
Sunny, with a high near 87.
Mostly clear, with a low around 61.
Sunny, with a high near 89.
Mostly clear, with a low around 62.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Jul 2
|
Mostly Sunny
|
82°F |
0 to 10 mph
SW
|
|
Thursday Night
Jul 2
|
Mostly Clear
|
60°F |
0 to 10 mph
SW
|
|
Friday
Jul 3
|
Patchy Fog then Sunny
|
85°F |
0 to 15 mph
SW
|
|
Friday Night
Jul 3
|
Partly Cloudy
|
59°F |
0 to 15 mph
W
|
|
Independence Day
Jul 4
|
Mostly Sunny
|
87°F |
0 to 10 mph
W
|
|
Saturday Night
Jul 4
|
Mostly Clear
|
60°F |
0 to 10 mph
W
|
|
Sunday
Jul 5
|
Sunny
|
86°F |
0 to 10 mph
SW
|
|
Sunday Night
Jul 5
|
Mostly Clear
|
60°F |
0 to 10 mph
SW
|
|
Monday
Jul 6
|
Sunny
|
87°F |
0 to 10 mph
SW
|
|
Monday Night
Jul 6
|
Mostly Clear
|
61°F |
0 to 10 mph
SW
|
|
Tuesday
Jul 7
|
Sunny
|
89°F |
0 to 10 mph
SW
|
|
Tuesday Night
Jul 7
|
Mostly Clear
|
62°F |
0 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Ontario International Airport.
