Onalaska, WI Weather Forecast
Local 7-day forecast
Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Onalaska, WI in one place.
Rain showers. Cloudy, with a high near 55. Northeast wind 5 to 13 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
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: Oct 15, 2026 1:57 PM CDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Onalaska, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 1:57 PM CDT
- Forecast office
- ARX
- Source
- NOAA / NWS
Daily Outlook
This Week in Onalaska
Wednesday looks like the warmest upcoming period in Onalaska at 71 degrees F.
Friday Night is the coolest period ahead with temperatures near 32 degrees F.
The strongest winds are forecast for Friday at about 17 to 24 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 1:57 PM CDT
- Coverage
- 7 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
Rain showers. Cloudy. Low around 42, with temperatures rising to around 50 overnight. Northwest wind 14 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Rain showers likely before 1pm. Mostly cloudy, with a high near 50. Northwest wind 17 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Areas of frost after 5am. Mostly clear, with a low around 32. West wind 3 to 16 mph.
Widespread frost before 8am. Sunny, with a high near 59. Southwest wind 6 to 15 mph, with gusts as high as 24 mph.
Clear, with a low around 40. South wind around 14 mph.
Sunny, with a high near 65. South wind 14 to 18 mph, with gusts as high as 26 mph.
Mostly clear, with a low around 43. South wind 7 to 13 mph, with gusts as high as 22 mph.
Mostly sunny, with a high near 67. South wind around 7 mph.
Partly cloudy, with a low around 43. South wind 0 to 6 mph.
Sunny, with a high near 70. South wind 0 to 8 mph.
Partly cloudy, with a low around 48. Southeast wind around 6 mph.
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 71. Southeast wind 6 to 12 mph. Chance of precipitation is 20%.
A slight chance of rain showers. Partly cloudy, with a low around 54. South wind 7 to 10 mph. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Oct 15
|
Rain Showers
|
55°F |
5 to 13 mph
NE
|
|
Tonight
Oct 15
|
Rain Showers
|
42°F |
14 to 20 mph
NW
|
|
Friday
Oct 16
|
Rain Showers Likely
|
50°F |
17 to 24 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear then Areas Of Frost
|
32°F |
3 to 16 mph
W
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
59°F |
6 to 15 mph
SW
|
|
Saturday Night
Oct 17
|
Clear
|
40°F |
14 mph
S
|
|
Sunday
Oct 18
|
Sunny
|
65°F |
14 to 18 mph
S
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
43°F |
7 to 13 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
67°F |
7 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
43°F |
0 to 6 mph
S
|
|
Tuesday
Oct 20
|
Sunny
|
70°F |
0 to 8 mph
S
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
48°F |
6 mph
SE
|
|
Wednesday
Oct 21
|
Mostly Sunny then Slight Chance Rain Showers
|
71°F |
6 to 12 mph
SE
|
|
Wednesday Night
Oct 21
|
Slight Chance Rain Showers
|
54°F |
7 to 10 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Onalaska.
