Ontario, WI Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Ontario, WI in one place.
Sunny, with a high near 79. East wind around 5 mph.
Local Weather Overview
This forecast page for Ontario, WI 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: Jun 1, 2026 1:50 AM CDT.
The active forecast window currently covers Jun 2 to Jun 7, 2026 for Ontario, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 2 to Jun 7, 2026
- Latest sync
- Jun 1, 2026 1:50 AM CDT
- Forecast office
- ARX
- Source
- NOAA / NWS
Daily Outlook
This Week in Ontario
Sunday looks like the warmest upcoming period in Ontario at 86 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 49 degrees F.
The strongest winds are forecast for Thursday at about 5 to 10 mph SW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 1, 2026 1:50 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- ARX
- Radar station
- KARX
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 49. Southeast wind around 3 mph.
Sunny, with a high near 81. South wind 2 to 6 mph.
Partly cloudy, with a low around 57. South wind around 5 mph.
Partly sunny, with a high near 84. Southwest wind 5 to 10 mph, with gusts as high as 21 mph.
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 61. Southwest wind 3 to 7 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 84. Southwest wind 3 to 7 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 61. South wind around 5 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. South wind around 6 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Southeast wind 1 to 5 mph. Chance of precipitation is 40%.
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 86. Southeast wind 2 to 6 mph. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jun 2
|
Sunny
|
79°F |
5 mph
E
|
|
Tuesday Night
Jun 2
|
Mostly Clear
|
49°F |
3 mph
SE
|
|
Wednesday
Jun 3
|
Sunny
|
81°F |
2 to 6 mph
S
|
|
Wednesday Night
Jun 3
|
Partly Cloudy
|
57°F |
5 mph
S
|
|
Thursday
Jun 4
|
Partly Sunny
|
84°F |
5 to 10 mph
SW
|
|
Thursday Night
Jun 4
|
Chance Showers And Thunderstorms
|
61°F |
3 to 7 mph
SW
|
|
Friday
Jun 5
|
Chance Showers And Thunderstorms
|
84°F |
3 to 7 mph
SW
|
|
Friday Night
Jun 5
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
61°F |
5 mph
S
|
|
Saturday
Jun 6
|
Chance Showers And Thunderstorms
|
85°F |
6 mph
S
|
|
Saturday Night
Jun 6
|
Chance Showers And Thunderstorms
|
62°F |
1 to 5 mph
SE
|
|
Sunday
Jun 7
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
86°F |
2 to 6 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Ontario.