Post Lake, WI Weather & Growing Conditions
Today
61°F
Rain Showers
Rain showers and patchy fog. Mostly cloudy. High near 61, with temperatures falling to around 55 in the afternoon. South wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Rain Showers | 9 mph S | 82% |
| Tonight | 41°F | Rain Showers Likely | 3 to 7 mph SW | 67% |
| Thursday | 46°F | Rain Showers Likely | 5 to 15 mph NNW | 70% |
| Thursday Night | 28°F | Mostly Cloudy | 8 to 14 mph N | 3% |
| Friday | 42°F | Partly Sunny | 5 to 10 mph N | 3% |
| Friday Night | 23°F | Partly Cloudy | 0 to 3 mph N | 0% |
| Saturday | 46°F | Sunny | 0 to 5 mph WNW | 0% |
| Saturday Night | 28°F | Partly Cloudy | 6 mph W | 6% |
| Sunday | 50°F | Mostly Sunny | 9 mph WNW | 11% |
| Sunday Night | 29°F | Partly Cloudy | 2 to 6 mph W | 1% |
| Monday | 54°F | Mostly Sunny | 2 to 10 mph WSW | 0% |
| Monday Night | 34°F | Partly Cloudy | 5 to 8 mph W | 2% |
| Tuesday | 52°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 8 mph NW | 15% |
| Tuesday Night | 30°F | Partly Cloudy | 0 to 3 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Post Lake, WI
Last spring frost
May 19
First fall frost
Sep 29
Growing season
131 days
Hardiness zone
4b
Explore more for Post Lake, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Laona 6 Sw, Wi (14.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.