Sparta, WI Weather Forecast
Local 7-day forecast
Areas Of Fog then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Sparta, WI in one place.
Areas of fog before 8am. Mostly sunny, with a high near 81. Wind around 0 mph.
Local Weather Overview
This forecast page for Sparta, 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: Aug 23, 2026 4:34 PM CDT.
The active forecast window currently covers Aug 24 to Aug 29, 2026 for Sparta, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 24 to Aug 29, 2026
- Latest sync
- Aug 23, 2026 4:34 PM CDT
- Forecast office
- ARX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sparta
Tuesday looks like the warmest upcoming period in Sparta at 84 degrees F.
Thursday Night is the coolest period ahead with temperatures near 54 degrees F.
The strongest winds are forecast for Wednesday at about 2 to 14 mph W.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 23, 2026 4:34 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
Mostly clear, with a low around 57. Wind around 0 mph.
Mostly sunny, with a high near 84. South wind 0 to 9 mph, with gusts as high as 18 mph.
A chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 63. Southwest wind 3 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers before 7am. Sunny, with a high near 83. West wind 2 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Mostly clear, with a low around 59. Northwest wind 1 to 8 mph, with gusts as high as 18 mph.
Sunny, with a high near 83. Northwest wind 1 to 7 mph.
Mostly clear, with a low around 54. Northwest wind around 2 mph.
Sunny, with a high near 83. Northwest wind around 1 mph.
A slight chance of rain showers after 1am. Mostly clear, with a low around 57. Northeast wind around 2 mph. Chance of precipitation is 20%.
A chance of rain showers before 1pm. Mostly sunny, with a high near 82. Southeast wind 2 to 8 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 62. Southeast wind 2 to 6 mph. Chance of precipitation is 50%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 24
|
Areas Of Fog then Mostly Sunny
|
81°F |
0 mph
|
|
Monday Night
Aug 24
|
Mostly Clear
|
57°F |
0 mph
|
|
Tuesday
Aug 25
|
Mostly Sunny
|
84°F |
0 to 9 mph
S
|
|
Tuesday Night
Aug 25
|
Chance Showers And Thunderstorms
|
63°F |
3 to 8 mph
SW
|
|
Wednesday
Aug 26
|
Slight Chance Rain Showers then Sunny
|
83°F |
2 to 14 mph
W
|
|
Wednesday Night
Aug 26
|
Mostly Clear
|
59°F |
1 to 8 mph
NW
|
|
Thursday
Aug 27
|
Sunny
|
83°F |
1 to 7 mph
NW
|
|
Thursday Night
Aug 27
|
Mostly Clear
|
54°F |
2 mph
NW
|
|
Friday
Aug 28
|
Sunny
|
83°F |
1 mph
NW
|
|
Friday Night
Aug 28
|
Mostly Clear then Slight Chance Rain Showers
|
57°F |
2 mph
NE
|
|
Saturday
Aug 29
|
Chance Rain Showers
|
82°F |
2 to 8 mph
SE
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms
|
62°F |
2 to 6 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sparta.
