Lake Koshkonong, WI Weather Forecast
Local 7-day forecast
Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Lake Koshkonong, WI in one place.
Rain showers. Cloudy, with a high near 57. Southeast wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half 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: Oct 15, 2026 5:37 PM CDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Lake Koshkonong, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 5:37 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 70 degrees F.
Friday Night is the coolest period ahead with temperatures near 30 degrees F.
The strongest winds are forecast for Tonight at about 0 to 20 mph W.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 5:37 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
Rain showers before 1am. Cloudy, with a low around 46. West wind 0 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Rain showers likely between 9am and 3pm. Mostly cloudy, with a high near 52. Northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Widespread frost after 1am. Mostly clear, with a low around 30. North wind 0 to 20 mph, with gusts as high as 30 mph. New rainfall amounts less than a tenth of an inch possible.
Widespread frost before 9am. Sunny, with a high near 56. West wind 0 to 10 mph.
Clear, with a low around 38. Southwest wind 10 to 15 mph.
Sunny, with a high near 62. Southwest wind around 15 mph, with gusts as high as 25 mph.
Mostly clear, with a low around 40. Southwest wind 5 to 15 mph.
Mostly sunny, with a high near 66.
Partly cloudy, with a low around 41.
Mostly sunny, with a high near 69.
Mostly clear, with a low around 44.
Sunny, with a high near 70.
Mostly clear, with a low around 49.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Rain Showers
|
57°F |
5 mph
SE
|
|
Tonight
Oct 15
|
Rain Showers
|
46°F |
0 to 20 mph
W
|
|
Friday
Oct 16
|
Rain Showers Likely
|
52°F |
15 to 20 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear then Widespread Frost
|
30°F |
0 to 20 mph
N
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
56°F |
0 to 10 mph
W
|
|
Saturday Night
Oct 17
|
Clear
|
38°F |
10 to 15 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
62°F |
15 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
40°F |
5 to 15 mph
SW
|
|
Monday
Oct 19
|
Mostly Sunny
|
66°F |
5 mph
SW
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
41°F |
0 to 5 mph
SW
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
69°F |
0 to 5 mph
SE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
44°F |
0 to 5 mph
SE
|
|
Wednesday
Oct 21
|
Sunny
|
70°F |
0 to 10 mph
SE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
49°F |
5 to 10 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lake Koshkonong.