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
57°F
Rain Showers
Rain showers and widespread fog. Cloudy. Low around 57, with temperatures rising to around 59 overnight. South southeast wind around 8 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Post Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Rain Showers | 8 mph SSE | 96% |
| Wednesday | 61°F | Rain Showers | 9 mph SSE | 93% |
| Wednesday Night | 43°F | Rain Showers | 5 to 8 mph SW | 86% |
| Thursday | 47°F | Rain Showers | 5 to 14 mph NNW | 93% |
| Thursday Night | 30°F | Slight Chance Rain Showers then Cloudy | 10 to 14 mph N | 22% |
| Friday | 43°F | Partly Sunny | 5 to 10 mph N | 4% |
| Friday Night | 25°F | Partly Cloudy | 2 mph NNE | 2% |
| Saturday | 47°F | Mostly Sunny | 0 to 3 mph W | 0% |
| Saturday Night | 29°F | Partly Cloudy | 3 mph W | 12% |
| Sunday | 52°F | Mostly Sunny | 3 to 8 mph WNW | 14% |
| Sunday Night | 31°F | Partly Cloudy | 2 to 6 mph W | 4% |
| Monday | 53°F | Mostly Sunny | 3 to 10 mph WSW | 1% |
| Monday Night | 35°F | Partly Cloudy | 8 mph W | 1% |
| Tuesday | 51°F | Mostly Sunny | 6 to 9 mph WNW | 0% |
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 Nov 4, 2026.