Merrill, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Merrill, a city in Lincoln County, Wisconsin.
Overnight
60°F
Partly Cloudy
Partly cloudy, with a low around 60. South southwest wind around 7 mph.
7-day forecast for Merrill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Partly Cloudy | 7 mph SSW | 1% |
| Tuesday | 79°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 7 to 10 mph WSW | 31% |
| Tuesday Night | 52°F | Mostly Cloudy | 0 to 7 mph NW | 12% |
| Wednesday | 77°F | Mostly Sunny | 0 to 5 mph NW | 1% |
| Wednesday Night | 48°F | Mostly Clear | 0 to 3 mph NW | 0% |
| Thursday | 82°F | Sunny | 0 to 8 mph WSW | 0% |
| Thursday Night | 55°F | Mostly Clear | 2 to 7 mph SSW | 0% |
| Friday | 85°F | Sunny | 2 to 12 mph SW | 8% |
| Friday Night | 59°F | Chance Showers And Thunderstorms | 5 to 9 mph SW | 27% |
| Saturday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 9 mph SW | 21% |
| Saturday Night | 59°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 to 8 mph WSW | 47% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 2 to 9 mph WNW | 45% |
| Sunday Night | 56°F | Chance Showers And Thunderstorms | 1 to 8 mph NNW | 32% |
| Monday | 81°F | Chance Showers And Thunderstorms | 2 to 7 mph WSW | 30% |
Forecast source: National Weather Service (api.weather.gov) for Merrill (45.181, -89.700). Updated through the day.
Growing snapshot for Merrill
Last spring frost
May 11
First fall frost
Sep 30
Growing season
139 days
Hardiness zone
4b
More local growing data for Merrill: nearby ZIP 54452 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Merrill, Wi (7 mi from Merrill). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.