Onalaska, WI Weather Forecast
Local 7-day forecast
Areas Of Fog then Patchy Smoke
Track current conditions, temperature changes, wind, and the full daily outlook for Onalaska, WI in one place.
Areas of fog before 9am, then patchy smoke. Sunny. High near 96, with temperatures falling to around 91 in the afternoon. Heat index values as high as 96. West wind around 5 mph.
Local Weather Overview
This forecast page for Onalaska, 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: Jul 14, 2026 6:21 PM CDT.
The active forecast window currently covers Jul 15 to Jul 20, 2026 for Onalaska, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 15 to Jul 20, 2026
- Latest sync
- Jul 14, 2026 6:21 PM CDT
- Forecast office
- ARX
- Source
- NOAA / NWS
Daily Outlook
This Week in Onalaska
Wednesday looks like the warmest upcoming period in Onalaska at 96 degrees F.
Monday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Monday at about 3 to 10 mph W.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 6:21 PM 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
Areas of smoke. Partly cloudy, with a low around 72. Heat index values as high as 99. Southwest wind around 3 mph.
Areas of smoke before 8am, then a slight chance of rain showers between 1pm and 4pm, then a slight chance of showers and thunderstorms. Sunny, with a high near 94. Southwest wind 2 to 6 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 1am. Mostly clear, with a low around 72. South wind around 6 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Southwest wind 5 to 8 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 73. Southwest wind 5 to 8 mph. Chance of precipitation is 20%.
Sunny, with a high near 91. Northwest wind around 7 mph.
Mostly clear, with a low around 68. Northeast wind 2 to 6 mph.
Mostly sunny, with a high near 89. South wind around 3 mph.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 70. Southwest wind around 5 mph. Chance of precipitation is 20%.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 89. West wind 3 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
A slight chance of rain showers after 7pm. Partly cloudy, with a low around 67. Northwest wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jul 15
|
Areas Of Fog then Patchy Smoke
|
96°F |
5 mph
W
|
|
Wednesday Night
Jul 15
|
Areas Of Smoke
|
72°F |
3 mph
SW
|
|
Thursday
Jul 16
|
Areas Of Smoke then Slight Chance Showers And Thunderstorms
|
94°F |
2 to 6 mph
SW
|
|
Thursday Night
Jul 16
|
Slight Chance Showers And Thunderstorms
|
72°F |
6 mph
S
|
|
Friday
Jul 17
|
Sunny then Slight Chance Showers And Thunderstorms
|
93°F |
5 to 8 mph
SW
|
|
Friday Night
Jul 17
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
73°F |
5 to 8 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
91°F |
7 mph
NW
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
68°F |
2 to 6 mph
NE
|
|
Sunday
Jul 19
|
Mostly Sunny
|
89°F |
3 mph
S
|
|
Sunday Night
Jul 19
|
Partly Cloudy then Slight Chance Rain Showers
|
70°F |
5 mph
SW
|
|
Monday
Jul 20
|
Slight Chance Rain Showers then Mostly Sunny
|
89°F |
3 to 10 mph
W
|
|
Monday Night
Jul 20
|
Slight Chance Rain Showers
|
67°F |
6 to 9 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Onalaska.
