Lake Koshkonong, WI Weather Forecast
Local 7-day forecast
Partly Cloudy then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Lake Koshkonong, WI in one place.
A chance of showers and thunderstorms between 3am and 5am, then showers and thunderstorms likely. Partly cloudy, with a low around 67. East wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Lake Koshkonong, 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: Jun 9, 2026 10:52 PM CDT.
The active forecast window currently covers Jun 9 to Jun 16, 2026 for Lake Koshkonong, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 9 to Jun 16, 2026
- Latest sync
- Jun 9, 2026 10:52 PM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake Koshkonong
Wednesday looks like the warmest upcoming period in Lake Koshkonong at 90 degrees F.
Sunday Night is the coolest period ahead with temperatures near 52 degrees F.
The strongest winds are forecast for Wednesday at about 5 to 20 mph S.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 9, 2026 10:52 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- MKX
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before noon, then a chance of showers and thunderstorms between noon and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 90. Heat index values as high as 96. South wind 5 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms likely before 10pm, then a chance of showers and thunderstorms between 10pm and midnight, then showers and thunderstorms likely between midnight and 1am, then a slight chance of showers and thunderstorms between 1am and 2am. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 67. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.
A chance of rain showers between 7am and 10am, then showers and thunderstorms. Partly sunny. High near 86, with temperatures falling to around 81 in the afternoon. South wind 5 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms before 1am. Mostly cloudy, with a low around 57. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Sunny, with a high near 79. West wind 10 to 15 mph.
Clear, with a low around 57. West wind 5 to 10 mph.
Sunny, with a high near 83. Southwest wind 5 to 15 mph.
Showers and thunderstorms likely after 7pm. Partly cloudy, with a low around 58. Chance of precipitation is 60%.
A chance of rain showers. Partly sunny, with a high near 75. Chance of precipitation is 40%.
A slight chance of rain showers. Mostly cloudy, with a low around 52. Chance of precipitation is 20%.
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 73. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 52. Chance of precipitation is 20%.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Jun 9
|
Partly Cloudy then Chance Showers And Thunderstorms
|
67°F |
0 to 5 mph
E
|
|
Wednesday
Jun 10
|
Chance Showers And Thunderstorms
|
90°F |
5 to 20 mph
S
|
|
Wednesday Night
Jun 10
|
Showers And Thunderstorms Likely
|
67°F |
5 to 15 mph
SW
|
|
Thursday
Jun 11
|
Showers And Thunderstorms
|
86°F |
5 to 15 mph
S
|
|
Thursday Night
Jun 11
|
Showers And Thunderstorms
|
57°F |
10 to 15 mph
SW
|
|
Friday
Jun 12
|
Sunny
|
79°F |
10 to 15 mph
W
|
|
Friday Night
Jun 12
|
Clear
|
57°F |
5 to 10 mph
W
|
|
Saturday
Jun 13
|
Sunny
|
83°F |
5 to 15 mph
SW
|
|
Saturday Night
Jun 13
|
Showers And Thunderstorms Likely
|
58°F |
5 to 10 mph
NW
|
|
Sunday
Jun 14
|
Chance Rain Showers
|
75°F |
5 to 10 mph
N
|
|
Sunday Night
Jun 14
|
Slight Chance Rain Showers
|
52°F |
5 to 10 mph
N
|
|
Monday
Jun 15
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
73°F |
5 to 10 mph
NW
|
|
Monday Night
Jun 15
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
52°F |
0 to 10 mph
W
|
|
Tuesday
Jun 16
|
Mostly Sunny then Chance Showers And Thunderstorms
|
74°F |
5 to 10 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lake Koshkonong.