Mercer, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mercer, a city in Mclean County, North Dakota.
Today
73°F
Sunny
Sunny, with a high near 73. West wind 7 to 18 mph, with gusts as high as 28 mph.
7-day forecast for Mercer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Sunny | 7 to 18 mph W | 0% |
| Tonight | 48°F | Mostly Clear | 3 to 16 mph SW | 0% |
| Wednesday | 82°F | Mostly Sunny | 7 to 18 mph SW | 0% |
| Wednesday Night | 53°F | Partly Cloudy | 6 to 16 mph SW | 6% |
| Thursday | 85°F | Sunny | 6 to 15 mph W | 2% |
| Thursday Night | 56°F | Clear | 6 to 14 mph E | 0% |
| Friday | 84°F | Sunny | 8 to 14 mph NW | 0% |
| Friday Night | 55°F | Mostly Clear | 7 to 10 mph NE | 2% |
| Saturday | 84°F | Sunny | 7 to 13 mph NE | 2% |
| Saturday Night | 56°F | Mostly Clear | 8 to 14 mph NE | 9% |
| Sunday | 81°F | Mostly Sunny | 8 to 14 mph E | 11% |
| Sunday Night | 56°F | Slight Chance Showers And Thunderstorms | 14 mph E | 31% |
| Monday | 79°F | Chance Showers And Thunderstorms | 12 to 15 mph NE | 31% |
| Monday Night | 56°F | Chance Showers And Thunderstorms | 9 to 14 mph NE | 28% |
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 Aug 4, 2026.