Post Lake, WI Weather & Growing Conditions
This Afternoon
61°F
Chance Rain Showers
A chance of rain showers. Cloudy. High near 61, with temperatures falling to around 59 in the afternoon. East southeast wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 61°F | Chance Rain Showers | 5 mph ESE | 52% |
| Tonight | 49°F | Rain Showers Likely | 5 mph ESE | 61% |
| Saturday | 61°F | Rain Showers Likely | 6 to 9 mph E | 62% |
| Saturday Night | 45°F | Chance Rain Showers then Patchy Fog | 2 to 6 mph NE | 47% |
| Sunday | 66°F | Partly Sunny | 5 to 9 mph NE | 2% |
| Sunday Night | 39°F | Mostly Cloudy | 5 to 8 mph NE | 0% |
| Monday | 61°F | Mostly Cloudy | 7 mph ENE | 1% |
| Monday Night | 37°F | Partly Cloudy then Patchy Frost | 5 mph ENE | 1% |
| Tuesday | 62°F | Patchy Frost then Mostly Sunny | 2 to 7 mph ENE | 2% |
| Tuesday Night | 39°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 | Patchy Fog | 0 to 3 mph NE | 2% |
| Thursday | 69°F | Patchy Fog then Mostly Sunny | 2 mph SSE | 5% |
| Thursday Night | 44°F | Partly Cloudy | 1 mph W | 7% |
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 Sep 19, 2026.