Merrill, WI Weather & Growing Conditions
Today
79°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. Mostly cloudy, with a high near 79. Heat index values as high as 79. West wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Showers And Thunderstorms Likely | 6 to 9 mph W | 70% |
| Tonight | 53°F | Mostly Cloudy | 1 to 7 mph NW | 11% |
| Wednesday | 77°F | Mostly Sunny | 0 to 3 mph N | 1% |
| Wednesday Night | 50°F | Mostly Clear then Patchy Fog | 0 to 3 mph NW | 0% |
| Thursday | 82°F | Sunny | 0 to 8 mph WNW | 0% |
| Thursday Night | 57°F | Mostly Clear | 3 to 7 mph SSW | 0% |
| Friday | 85°F | Sunny | 3 to 12 mph SW | 8% |
| Friday Night | 60°F | Chance Showers And Thunderstorms | 5 to 9 mph SW | 29% |
| Saturday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 8 mph SW | 20% |
| Saturday Night | 61°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 to 7 mph WSW | 48% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 2 to 8 mph W | 44% |
| Sunday Night | 57°F | Chance Showers And Thunderstorms | 1 to 7 mph NNW | 32% |
| Monday | 81°F | Chance Rain Showers | 1 to 6 mph WNW | 30% |
| Monday Night | 57°F | Chance Showers And Thunderstorms | 2 to 6 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Merrill, WI
Last spring frost
May 11
First fall frost
Sep 30
Growing season
139 days
Hardiness zone
4b
Explore more for Merrill, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Merrill, Wi (7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.