Post Lake, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Post Lake, a community in Langlade County, Wisconsin.
Today
76°F
Chance Showers And Thunderstorms
Rain showers likely before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. Mostly cloudy, with a high near 76. Heat index values as high as 75. West wind 5 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Post Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 58% |
| Tonight | 53°F | Mostly Cloudy | 0 to 5 mph NW | 12% |
| Wednesday | 75°F | Patchy Fog then Mostly Sunny | 0 to 3 mph NW | 1% |
| Wednesday Night | 51°F | Partly Cloudy then Patchy Fog | 2 mph W | 2% |
| Thursday | 80°F | Patchy Fog then Sunny | 0 to 6 mph WSW | 1% |
| Thursday Night | 57°F | Mostly Clear | 5 mph SW | 1% |
| Friday | 83°F | Sunny | 3 to 9 mph SW | 8% |
| Friday Night | 60°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 31% |
| Saturday | 81°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph WSW | 22% |
| Saturday Night | 60°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 6 mph WSW | 46% |
| Sunday | 80°F | Chance Showers And Thunderstorms | 2 to 7 mph W | 46% |
| Sunday Night | 56°F | Chance Showers And Thunderstorms | 0 to 6 mph NW | 31% |
| Monday | 78°F | Patchy Fog then Chance Showers And Thunderstorms | 1 to 5 mph WNW | 30% |
| Monday Night | 56°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov) for Post Lake (45.430, -89.090). Updated through the day.
Growing snapshot for Post Lake
Last spring frost
Jun 3
First fall frost
Sep 18
Growing season
106 days
Hardiness zone
4b
More local growing data for Post Lake: nearby ZIP 54428 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, North Pelican, Wi (13.8 mi from Post Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.