Sussex, WI Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Sussex, WI in one place.
Mostly sunny, with a high near 75. Northwest wind around 10 mph.
Local Weather Overview
This forecast page for Sussex, 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 7:39 PM CDT.
The active forecast window currently covers Aug 23 to Aug 29, 2026 for Sussex, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 23 to Aug 29, 2026
- Latest sync
- Aug 23, 2026 7:39 PM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sussex
Wednesday looks like the warmest upcoming period in Sussex at 82 degrees F.
Tonight is the coolest period ahead with temperatures near 50 degrees F.
The strongest winds are forecast for Wednesday at about 10 to 15 mph SW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 23, 2026 7:39 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
Patchy fog after 5am. Mostly clear, with a low around 50. Northwest wind 0 to 10 mph.
Patchy fog before 8am. Sunny, with a high near 75. Northwest wind 0 to 5 mph.
Mostly clear, with a low around 56. Southwest wind 0 to 5 mph.
Mostly sunny, with a high near 80. Southwest wind 0 to 5 mph.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. South wind 5 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 before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 82. Southwest wind 10 to 15 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 62. West wind 5 to 10 mph. Chance of precipitation is 30%.
Sunny, with a high near 80.
Mostly clear, with a low around 60.
Mostly sunny, with a high near 79.
Partly cloudy, with a low around 61.
A slight chance of rain showers after 7am. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
A chance of rain showers. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Aug 23
|
Mostly Sunny
|
75°F |
10 mph
NW
|
|
Tonight
Aug 23
|
Mostly Clear then Patchy Fog
|
50°F |
0 to 10 mph
NW
|
|
Monday
Aug 24
|
Patchy Fog then Sunny
|
75°F |
0 to 5 mph
NW
|
|
Monday Night
Aug 24
|
Mostly Clear
|
56°F |
0 to 5 mph
SW
|
|
Tuesday
Aug 25
|
Mostly Sunny
|
80°F |
0 to 5 mph
SW
|
|
Tuesday Night
Aug 25
|
Partly Cloudy then Chance Showers And Thunderstorms
|
64°F |
5 to 10 mph
S
|
|
Wednesday
Aug 26
|
Chance Showers And Thunderstorms
|
82°F |
10 to 15 mph
SW
|
|
Wednesday Night
Aug 26
|
Chance Showers And Thunderstorms then Mostly Clear
|
62°F |
5 to 10 mph
W
|
|
Thursday
Aug 27
|
Sunny
|
80°F |
5 to 10 mph
NW
|
|
Thursday Night
Aug 27
|
Mostly Clear
|
60°F |
0 to 5 mph
N
|
|
Friday
Aug 28
|
Mostly Sunny
|
79°F |
0 to 5 mph
N
|
|
Friday Night
Aug 28
|
Partly Cloudy
|
61°F |
0 to 5 mph
SE
|
|
Saturday
Aug 29
|
Slight Chance Rain Showers
|
79°F |
0 to 5 mph
S
|
|
Saturday Night
Aug 29
|
Chance Rain Showers
|
64°F |
5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sussex.