Mercer, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mercer, a city in Mclean County, North Dakota.
Overnight
29°F
Patchy Fog
Patchy fog. Mostly cloudy. Low around 29, with temperatures rising to around 31 overnight. Northwest wind around 9 mph.
7-day forecast for Mercer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 29°F | Patchy Fog | 9 mph NW | 0% |
| Wednesday | 50°F | Patchy Fog then Mostly Sunny | 8 to 14 mph NW | 0% |
| Wednesday Night | 26°F | Partly Cloudy | 7 to 10 mph N | 0% |
| Thursday | 41°F | Mostly Sunny | 3 to 8 mph NE | 0% |
| Thursday Night | 24°F | Partly Cloudy | 5 to 9 mph SE | 0% |
| Friday | 50°F | Mostly Sunny | 8 to 12 mph SW | 0% |
| Friday Night | 30°F | Mostly Clear | 9 mph SW | 0% |
| Saturday | 56°F | Sunny | 9 to 20 mph W | 0% |
| Saturday Night | 30°F | Mostly Clear | 5 to 10 mph W | 0% |
| Sunday | 57°F | Sunny | 5 to 14 mph SW | 0% |
| Sunday Night | 37°F | Partly Cloudy | 12 mph SW | 0% |
| Monday | 57°F | Mostly Sunny | 10 to 17 mph W | 1% |
| Monday Night | 31°F | Mostly Clear | 5 to 8 mph W | 1% |
| Tuesday | 54°F | Mostly Sunny | 5 to 10 mph SW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Mercer (47.491, -100.711). Updated through the day.
Growing snapshot for Mercer
Last spring frost
May 14
First fall frost
Sep 26
Growing season
136 days
Hardiness zone
4a
More local growing data for Mercer: nearby ZIP 58559 weather · frost dates · planting calendar · North Dakota frost dates
Nearby towns & communities
Benedict
Butte
Coleharbor
Garrison
Max
Pick City
Riverdale
Ruso
Ryder
Turtle Lake
Underwood
Washburn
White Shield
Climate data from the nearest NOAA station, Turtle Lake, Nd (9.7 mi from Mercer). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.