Westby, WI Weather

Vernon County4:43 AM CDT43.66°N, 90.85°WElevation 1,299 ft

Current conditions

Clear
47°
Clear
Feels like 47°
High 72°·Low 48° tonight
WindCalm
Humidity94%
Dew point46°
Pressure30.22 inHg
Visibility9.0 mi
Cloud cover21%
UV index0 Low
Sunrise7:28 AM
Sunset6:09 PM

Observed at Sparta, Sparta / Fort McCoy Airport · 1 hr ago

Forecast

10-day

  • Thursday Night

    Mostly clear, with a low around 48. Southeast wind around 3 mph.

  • Friday

    Mostly sunny, with a high near 72. South wind 5 to 10 mph, with gusts as high as 18 mph.

  • Friday Night

    Mostly cloudy, with a low around 54. South wind around 8 mph, with gusts as high as 21 mph.

National Weather Service forecast updated 1 day ago.

Hourly

Hourly forecast
  1. Now Mostly Clear 51°
  2. 5 AM Mostly Clear 50°
  3. 6 AM Mostly Sunny 49°
  4. 7 AM Mostly Sunny 49°
  5. 8 AM Mostly Sunny 52°
  6. 9 AM Sunny 54°
  7. 10 AM Sunny 57°
  8. 11 AM Sunny 61°
  9. 12 PM Sunny 65°
  10. 1 PM Mostly Sunny 68°
  11. 2 PM Mostly Sunny 69°
  12. 3 PM Mostly Sunny 70°
  13. 4 PM Mostly Sunny 71°
  14. 5 PM Mostly Sunny 69°
  15. 6 PM Partly Cloudy 67°
  16. 7 PM Partly Cloudy 65°
  17. 8 PM Partly Cloudy 63°
  18. 9 PM Partly Cloudy 61°
  19. 10 PM Partly Cloudy 60°
  20. 11 PM Mostly Cloudy 59°
  21. Sat12 AM Mostly Cloudy 58°
  22. 1 AM Mostly Cloudy 57°
  23. 2 AM Mostly Cloudy 57°
  24. 3 AM Mostly Cloudy 56°

10-day forecast

Details
  1. WedOct 21 Sunny Sunny47°71°
  2. ThuOct 22 Patchy Fog then Sunny Patchy Fog then Sunny48°73°
  3. TodayOct 23 Mostly Sunny Mostly Sunny54°72°
  4. SatOct 24 Partly Sunny Partly Sunny53°72°
  5. SunOct 25 Partly Sunny Partly Sunny25%45°63°
  6. MonOct 26 Chance Rain Showers Chance Rain Showers39%39°56°
  7. TueOct 27 Slight Chance Rain Showers then Partly Sunny Slight Chance Rain Showers then Partly Sunny21%36°54°
  8. WedOct 28 Cloudy Cloudy0.32 in48°61°
  9. ThuOct 29 Partly cloudy Partly cloudy0.06 in37°53°
  10. FriOct 30 Mostly sunny Mostly sunny36°49°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news in Wisconsin

More weather news

Air quality

53
Moderate
Fine particles (PM2.5)

Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Forecast

  • FriModerate
  • SatGood
  • SunGood

Driftless Area North, WI reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:28 AM
Sunset 6:09 PM
Daylight 10 h 40 min (−2 min 48 s tomorrow)
Waxing Gibbous · 91% lit
Moonrise 4:39 PM Moonset 4:33 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low54° / 34°
Month to date1.73 in (normal 1.94 in)

Viroqua, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in ARX, issued 3 hrs ago

Key Messages

- Small (10-20%) chance for a light shower north of Interstate 90 this afternoon and evening and again late Saturday into early Sunday.

- Quite a bit of uncertainty for early next week with potential for widespread rain in our region, nothing at all, or rain for just some of us. Regardless, temperatures trend cooler and towards normal through the beginning of next week.

Discussion

Issued at 110 AM CDT Fri Oct 23 2026

This Evening and Late Saturday: Low Potential for Light Rain

This afternoon/evening, weak shortwave looks to ride the upper ridge that has been keeping us warm and dry. This feature, along with some modest moist advection at 850mb, could (10-20% per 23.00z NBM/HREF and 22.12z LREF) produce a light shower as the shortwave passes over areas north of Interstate 90. No hazards are expected.

Moving into the weekend, strong northern stream upper low barrels eastward over Canada with the associated cold front pushing south through the Upper Midwest. However, with this feature failing to phase with a southern stream upper low that looks to linger over the Four Corners, the front will eventually stall somewhere near our CWA. As this occurs, mid-level moisture will continue to be advected northward on the western side of a ridge centered in the Ohio Valley. Thus, as weak shortwaves eject northeast from the Four Corners upper low, some light rain could result given the combination of modest cooling aloft, mid level moisture, and lift associated with the stalled front. Think its a pretty good bet some spots will pick up some rain but most guidance keeps best moist fetch just to our northwest. Have therefore carried some low (10- 20%) PoPs in our area for now.

Sunday - Wednesday: Greater Precipitation Potential, Trending Cooler

Greater precipitation potential exists Monday through Tuesday as the cutoff low across the Desert Southwest begins to lift northward. How this feature evolves as it moves northward and where the heaviest rainfall associated with it will occur remains rather uncertain though. The GEFS/AIGEFS members largely suggest the low takes a more southern trajectory, keeping higher probabilities for precipitation across a majority of the Upper Mississippi River Valley (60-80%) whereas the EPS/AIFS Ens on the other hand suggest a more northern and western solution, keeping higher probabilities across Minnesota into northern Wisconsin. Given the uncertainty, probabilities for precipitation remain on the lower end, currently sitting around 30- 40% in the 23.01z NBM though these probabilities may increase as the models begin to converge on a solution.

Aviation

Issued at 110 AM CDT Fri Oct 23 2026

VFR conditions are expected over the next 24 hours, save the usual river fog around OVS. Small (10-20%) chance for a brief shower along and north of an AUM-VOK line but flight rule reductions are not expected. Winds will remain generally out of the south as well.

Arx Watches

WI...None. MN...None. IA...None.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.