Post Lake, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Post Lake, a community in Langlade County, Wisconsin.
Tonight
49°F
Rain Showers Likely
Rain showers likely. Cloudy, with a low around 49. East southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Post Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Rain Showers Likely | 5 mph ESE | 56% |
| Saturday | 61°F | Rain Showers Likely | 6 to 9 mph E | 61% |
| Saturday Night | 45°F | Chance Rain Showers then Patchy Fog | 2 to 6 mph NE | 45% |
| Sunday | 66°F | Partly Sunny | 5 to 10 mph NE | 2% |
| Sunday Night | 39°F | Mostly Cloudy | 5 to 8 mph NE | 0% |
| Monday | 61°F | Partly Sunny | 7 mph ENE | 1% |
| Monday Night | 37°F | Partly Cloudy | 5 mph ENE | 1% |
| Tuesday | 62°F | Patchy Frost then Mostly Sunny | 2 to 7 mph ENE | 2% |
| Tuesday Night | 38°F | Mostly Clear then Patchy Fog | 5 mph ENE | 3% |
| Wednesday | 65°F | Patchy Fog then Mostly Sunny | 1 to 5 mph E | 3% |
| Wednesday Night | 41°F | Partly Cloudy then Patchy Fog | 0 to 3 mph ENE | 2% |
| Thursday | 69°F | Patchy Fog then Mostly Sunny | 2 mph S | 5% |
| Thursday Night | 44°F | Partly Cloudy | 1 mph W | 8% |
| Friday | 71°F | Mostly Sunny | 0 to 3 mph NNW | 7% |
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 Sep 19, 2026.