Live Weather & Forecast

Weather in Sparta

Wisconsin, United States · Real-time conditions & 3-day outlook

Flag of United States
Overcast
14°C
Feels like 13°C
57°F / Feels 56°F
Overcast
Sparta, Wisconsin
🌞 Daytime
Updated: 2026-04-16 08:15
💧
Humidity
100%
💨
Wind
12.2 km/h NE
🌬️
Wind Gust
15.7 km/h
🌡️
Pressure
1008 mb
👁️
Visibility
14 km
☀️
UV Index
0.5 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
100%
💦
Dew Point
11.6°C
🌐
Wind Degree
48°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
150.9 μg/m³
NO₂
1.9 μg/m³
O₃
106 μg/m³
SO₂
2.4 μg/m³
PM 2.5
9.5 μg/m³
PM 10
11.1 μg/m³

Weather Alerts 5

Met · Severe · Expected
Flood Warning issued April 15 at 9:56AM CDT until April 18 at 9:45AM CDT by NWS La Crosse WI

Significant rainfall amounts over the last week or so have led to excessive runoff in the Lemonweir River basin. This runoff is expected to increase river flows over the rest of the week. Additional heavy rainfall is possible on Friday into Friday night, which will bring another chance of increased runoff into the Lemonweir River. * WHAT...Flooding caused by excessive rainfall is expected. * WHE...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Stay away or be swept away. River banks and culverts can become unstable and unsafe.

Met · Moderate · Expected
Special Weather Statement issued April 16 at 4:51AM CDT by NWS La Crosse WI

WHAT...Areas of localized dense fog with visibilities around or under one half mile. WHERE...Parts of northeast Iowa, southeast Minnesota, and southwestern Wisconsin WHEN...Through 8am this morning. IMPACTS...Drivers should be alert for localized areas of reduced visibility. PREPAREDNESS AND PRECAUTIONARY ACTIONS...If driving this morning, allow yourself extra time and please use low beam head...

Met · Severe · Immediate
Flood Warning issued April 15 at 9:10PM CDT until April 18 at 5:30PM CDT by NWS La Crosse WI

...The Flood Warning is extended for the following rivers in Wisconsin... Black River at Black River Falls affecting Jackson County. ...The Flood Warning continues for the following rivers in Wisconsin... Kickapoo River at Viola affecting Richland and Vernon Counties. Kickapoo River at Readstown affecting Vernon County. Yellow River at Necedah affecting Juneau County. Black River Near Galesv...

Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely. Caution is urged when walking near riverbanks. Motorists should not attempt to drive around barricades or drive cars th...

Met · Severe · Immediate
Flood Warning issued April 16 at 5:11AM CDT until April 18 at 5:30PM CDT by NWS La Crosse WI

...The Flood Warning continues for the following rivers in Wisconsin... Black River Near Galesville affecting La Crosse and Trempealeau Counties. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Black River near Galesville. * WHEN...Until Saturday afternoon. * ADDITIONAL DETAILS... - At 4:00 AM CDT Thursday the stage was 14.2 feet. - Bankfull stage is 10.0...

Caution is urged when walking near riverbanks. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional river and weather information is available at www.weather.gov/lacrosse. The next statement will be issued this evening by 815 PM CDT.

Met · Severe · Immediate
Flood Warning issued April 15 at 9:10PM CDT until April 17 at 8:30PM CDT by NWS La Crosse WI

...The Flood Warning is extended for the following rivers in Wisconsin... Black River at Black River Falls affecting Jackson County. ...The Flood Warning continues for the following rivers in Wisconsin... Kickapoo River at Viola affecting Richland and Vernon Counties. Kickapoo River at Readstown affecting Vernon County. Yellow River at Necedah affecting Juneau County. Black River Near Galesv...

Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely. Caution is urged when walking near riverbanks. Motorists should not attempt to drive around barricades or drive cars th...

Today's Hourly Forecast

24-hour breakdown for Sparta, Wisconsin

12 AM
Clear
13°
Clear
💧 93% 💨 9.4 km/h
1 AM
Clear
13°
Clear
💧 94% 💨 12.2 km/h
2 AM
Mist
13°
Mist
💧 95% 💨 13.7 km/h
3 AM
Clear
13°
Clear
💧 93% 💨 12.2 km/h
4 AM
Patchy rain nearby
12°
Patchy rain nearby
💧 91% 💨 10.8 km/h 🌧️ 67%
5 AM
Clear
12°
Clear
💧 90% 💨 11.2 km/h
6 AM
Clear
11°
Clear
💧 86% 💨 12.6 km/h
7 AM
Sunny
12°
Sunny
💧 90% 💨 11.9 km/h
8 AM
Overcast
14°
Overcast
💧 100% 💨 12.2 km/h
9 AM
Fog
13°
Fog
💧 100% 💨 12.2 km/h
10 AM
Mist
15°
Mist
💧 97% 💨 9.7 km/h
11 AM
Partly Cloudy
16°
Partly Cloudy
💧 87% 💨 7.6 km/h
12 PM
Sunny
18°
Sunny
💧 81% 💨 6.1 km/h
1 PM
Sunny
19°
Sunny
💧 73% 💨 5 km/h
2 PM
Sunny
21°
Sunny
💧 65% 💨 5.8 km/h
3 PM
Sunny
22°
Sunny
💧 57% 💨 7.6 km/h
4 PM
Sunny
22°
Sunny
💧 55% 💨 10.1 km/h
5 PM
Sunny
23°
Sunny
💧 58% 💨 11.9 km/h
6 PM
Sunny
22°
Sunny
💧 58% 💨 11.9 km/h
7 PM
Sunny
20°
Sunny
💧 63% 💨 10.4 km/h
8 PM
Clear
18°
Clear
💧 72% 💨 11.5 km/h
9 PM
Clear
15°
Clear
💧 78% 💨 11.5 km/h
10 PM
Clear
15°
Clear
💧 89% 💨 12.6 km/h
11 PM
Clear
15°
Clear
💧 80% 💨 13.7 km/h

3-Day Forecast

Daily overview for Sparta, Wisconsin

Today
Sunny
Sunny
24° / 11°
🌧️ 0% chance of rain
💧 Avg. humidity: 81%
💨 Max wind: 13.7 km/h
🌧️ Total precip: 0.01 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:18 AM
🌇 Sunset: 07:49 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Heavy rain
Heavy rain
23° /
🌧️ 87% chance of rain
💧 Avg. humidity: 88%
💨 Max wind: 36 km/h
🌧️ Total precip: 58.57 mm
☀️ UV Index: 1.2
🌅 Sunrise: 06:16 AM
🌇 Sunset: 07:50 PM
🌙 New Moon
🌑 Moon: 0% lit
Sat, Apr 18
Heavy rain
Heavy rain
/ -1°
🌧️ 77% chance of rain
❄️ 4% chance of snow
💧 Avg. humidity: 62%
💨 Max wind: 40.3 km/h
🌧️ Total precip: 35.85 mm
☀️ UV Index: 1.2
🌅 Sunrise: 06:15 AM
🌇 Sunset: 07:51 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit

Best Time to Visit Sparta

Plan your trip to Sparta, United States around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to Sparta 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Sparta?
Current conditions in Sparta: Overcast, temperature 14°C, humidity 100%.
What is the best time to visit Sparta?
The best time to visit Sparta is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Sparta?
Sparta is located at approximately 43.9° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Sparta?
The wettest period in Sparta is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Sparta?
For visits to Sparta during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Sparta in?
Sparta is located in United States, in the state of Wisconsin.
What are the public holidays in Sparta in 2026?
View the 2026 public holidays for Sparta on our Holidays page.
What are the GPS coordinates used for the weather forecast in Sparta?
The weather forecast for Sparta uses coordinates 43.9441, -90.8108.