Merrill, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Merrill, a city in Lincoln County, Wisconsin.
Today
61°F
Rain Showers Likely
Rain showers likely. Cloudy, with a high near 61. East wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Merrill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Rain Showers Likely | 9 mph E | 58% |
| Tonight | 47°F | Chance Rain Showers then Mostly Cloudy | 3 to 7 mph NE | 38% |
| Sunday | 67°F | Partly Sunny | 6 to 12 mph NE | 2% |
| Sunday Night | 38°F | Mostly Cloudy | 8 mph NE | 0% |
| Monday | 65°F | Mostly Cloudy | 8 mph ENE | 1% |
| Monday Night | 36°F | Partly Cloudy | 0 to 6 mph ENE | 1% |
| Tuesday | 66°F | Sunny | 3 to 8 mph E | 0% |
| Tuesday Night | 36°F | Mostly Clear then Patchy Fog | 2 to 6 mph E | 1% |
| Wednesday | 69°F | Patchy Fog then Sunny | 2 to 7 mph E | 1% |
| Wednesday Night | 37°F | Mostly Clear then Patchy Fog | 1 to 5 mph E | 1% |
| Thursday | 71°F | Patchy Fog then Mostly Sunny | 3 mph E | 3% |
| Thursday Night | 40°F | Partly Cloudy | 2 mph ENE | 3% |
| Friday | 74°F | Mostly Sunny | 1 to 5 mph ESE | 3% |
| Friday Night | 41°F | Partly Cloudy | 0 to 3 mph SE | 4% |
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.