Merrill, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Merrill, a city in Lincoln County, Wisconsin.
This Afternoon
62°F
Rain Showers Likely
Rain showers likely. Cloudy, with a high near 62. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Merrill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Rain Showers Likely | 10 mph E | 57% |
| Tonight | 48°F | Chance Rain Showers then Mostly Cloudy | 2 to 7 mph NE | 37% |
| Sunday | 67°F | Mostly Sunny | 7 to 12 mph NE | 0% |
| Sunday Night | 39°F | Mostly Cloudy | 6 to 9 mph NE | 0% |
| Monday | 64°F | Mostly Cloudy | 6 to 9 mph ENE | 1% |
| Monday Night | 34°F | Mostly Cloudy | 6 mph ENE | 1% |
| Tuesday | 66°F | Mostly Sunny | 3 to 9 mph ENE | 2% |
| Tuesday Night | 38°F | Mostly Clear then Patchy Fog | 6 mph E | 1% |
| Wednesday | 69°F | Patchy Fog then Mostly Sunny | 3 to 8 mph E | 1% |
| Wednesday Night | 41°F | Partly Cloudy then Patchy Fog | 1 to 6 mph E | 1% |
| Thursday | 70°F | Patchy Fog | 1 to 5 mph ESE | 15% |
| Thursday Night | 44°F | Slight Chance Rain Showers then Mostly Cloudy | 0 to 3 mph ESE | 15% |
| Friday | 74°F | Partly Sunny | 2 mph E | 5% |
| Friday Night | 45°F | Partly Cloudy | 1 mph ESE | 3% |
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 Sep 19, 2026.