Johnstown, WI Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Johnstown, WI in one place.
Showers and thunderstorms. Mostly cloudy, with a high near 82. Southeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Johnstown, 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 7, 2026 10:00 PM CDT.
The active forecast window currently covers Jun 8 to Jun 14, 2026 for Johnstown, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 8 to Jun 14, 2026
- Latest sync
- Jun 7, 2026 10:00 PM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Johnstown
Wednesday looks like the warmest upcoming period in Johnstown at 92 degrees F.
Thursday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Wednesday at about 10 to 20 mph SW.
Precipitation is mentioned in 13 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 7, 2026 10:00 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
Showers and thunderstorms. Mostly cloudy, with a low around 68. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
A chance of rain showers before 7am. Partly sunny, with a high near 86. Heat index values as high as 95. Southwest wind 0 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. South wind around 5 mph. Chance of precipitation is 30%.
A chance of rain showers before 7am. Mostly sunny, with a high near 92. Southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Showers and thunderstorms likely between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 68. Southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely. Partly sunny, with a high near 87. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely. Partly cloudy, with a low around 59. Chance of precipitation is 60%.
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Sunny, with a high near 85. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Mostly clear, with a low around 61. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
A chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Jun 8
|
Showers And Thunderstorms
|
82°F |
10 to 15 mph
SE
|
|
Monday Night
Jun 8
|
Showers And Thunderstorms
|
68°F |
5 to 10 mph
S
|
|
Tuesday
Jun 9
|
Chance Rain Showers then Partly Sunny
|
86°F |
0 to 10 mph
SW
|
|
Tuesday Night
Jun 9
|
Partly Cloudy then Chance Showers And Thunderstorms
|
68°F |
5 mph
S
|
|
Wednesday
Jun 10
|
Chance Rain Showers then Mostly Sunny
|
92°F |
10 to 20 mph
SW
|
|
Wednesday Night
Jun 10
|
Showers And Thunderstorms Likely
|
68°F |
15 to 20 mph
SW
|
|
Thursday
Jun 11
|
Showers And Thunderstorms Likely
|
87°F |
15 mph
SW
|
|
Thursday Night
Jun 11
|
Showers And Thunderstorms Likely
|
59°F |
5 to 15 mph
W
|
|
Friday
Jun 12
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
85°F |
5 to 15 mph
W
|
|
Friday Night
Jun 12
|
Slight Chance Showers And Thunderstorms
|
61°F |
5 to 10 mph
SW
|
|
Saturday
Jun 13
|
Slight Chance Showers And Thunderstorms
|
86°F |
5 to 15 mph
SW
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
60°F |
5 to 10 mph
W
|
|
Sunday
Jun 14
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
80°F |
5 to 10 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Johnstown.