Thornton, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Thornton, a community in Shawano County, Wisconsin.
Today
83°F
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
A slight chance of rain showers between 11am and 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm, then a chance of showers and thunderstorms between 2pm and 4pm, then a slight chance of showers and thunderstorms. Mostly cloudy. High near 83, with temperatures falling to around 80 in the afternoon. Heat index values as high as 83. Southwest wind 7 to 12 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
7-day forecast for Thornton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 7 to 12 mph SW | 30% |
| Tonight | 58°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 to 6 mph NW | 23% |
| Wednesday | 81°F | Partly Sunny | 1 to 5 mph SE | 4% |
| Wednesday Night | 54°F | Partly Cloudy then Patchy Fog | 0 to 5 mph ESE | 2% |
| Thursday | 84°F | Patchy Fog then Sunny | 0 to 7 mph WNW | 1% |
| Thursday Night | 59°F | Mostly Clear | 3 to 7 mph SSW | 0% |
| Friday | 87°F | Sunny | 3 to 12 mph SW | 3% |
| Friday Night | 63°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 20% |
| Saturday | 87°F | Mostly Sunny | 5 to 10 mph SW | 14% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms | 2 to 9 mph SW | 38% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 2 to 9 mph W | 38% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 2 to 8 mph NW | 35% |
| Monday | 83°F | Chance Showers And Thunderstorms | 2 to 7 mph S | 31% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 2 to 7 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov) for Thornton (44.799, -88.691). Updated through the day.
Growing snapshot for Thornton
Last spring frost
May 9
First fall frost
Oct 2
Growing season
144 days
Hardiness zone
5a
More local growing data for Thornton: nearby ZIP 54166 weather · frost dates · planting calendar · Wisconsin frost dates
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Climate data from the nearest NOAA station, Shawano 2Ssw, Wi (1.3 mi from Thornton). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.