Knox, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Knox, a city in Benson County, North Dakota.
Overnight
27°F
Areas Of Fog
Areas of fog. Mostly cloudy. Low around 27, with temperatures rising to around 31 overnight. North northwest wind around 6 mph.
7-day forecast for Knox
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 27°F | Areas Of Fog | 6 mph NNW | 0% |
| Wednesday | 50°F | Areas Of Fog then Mostly Sunny | 5 to 12 mph NNW | 0% |
| Wednesday Night | 27°F | Partly Cloudy | 10 mph N | 0% |
| Thursday | 39°F | Partly Sunny | 3 to 10 mph ENE | 0% |
| Thursday Night | 22°F | Partly Cloudy | 5 to 8 mph SE | 0% |
| Friday | 48°F | Mostly Sunny | 8 to 12 mph SSW | 0% |
| Friday Night | 29°F | Partly Cloudy | 7 mph SW | 0% |
| Saturday | 53°F | Sunny | 8 to 20 mph WSW | 2% |
| Saturday Night | 30°F | Partly Cloudy | 6 to 14 mph W | 0% |
| Sunday | 53°F | Sunny | 6 to 10 mph SW | 0% |
| Sunday Night | 36°F | Partly Cloudy | 9 to 13 mph SW | 0% |
| Monday | 53°F | Mostly Sunny | 14 to 21 mph WNW | 1% |
| Monday Night | 29°F | Partly Cloudy | 5 to 10 mph WNW | 0% |
| Tuesday | 50°F | Mostly Sunny | 5 to 9 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Knox (48.344, -99.691). Updated through the day.
Growing snapshot for Knox
Last spring frost
May 11
First fall frost
Sep 28
Growing season
138 days
Hardiness zone
4a
More local growing data for Knox: nearby ZIP 58343 weather · frost dates · planting calendar · North Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Esmond 9 Nnw, Nd (10.6 mi from Knox). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.