King Arthur Park, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for King Arthur Park, a community in Gallatin County, Montana.
Tonight
45°F
Chance Light Rain then Patchy Fog
A chance of rain before midnight, then patchy fog and a slight chance of rain. Cloudy, with a low around 45. East wind around 3 mph. Chance of precipitation is 40%.
7-day forecast for King Arthur Park
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Chance Light Rain then Patchy Fog | 3 mph E | 44% |
| Sunday | 64°F | Patchy Fog then Mostly Sunny | 3 mph NW | 6% |
| Sunday Night | 43°F | Mostly Clear | 2 to 7 mph SE | 1% |
| Monday | 71°F | Sunny | 2 to 6 mph WNW | 1% |
| Monday Night | 45°F | Mostly Clear | 1 to 8 mph ESE | 0% |
| Tuesday | 74°F | Sunny | 1 to 6 mph WSW | 0% |
| Tuesday Night | 48°F | Partly Cloudy | 0 to 7 mph SE | 5% |
| Wednesday | 74°F | Mostly Sunny | 2 to 6 mph W | 3% |
| Wednesday Night | 48°F | Mostly Clear | 2 to 10 mph S | 7% |
| Thursday | 77°F | Sunny | 2 to 8 mph SW | 1% |
| Thursday Night | 50°F | Mostly Clear | 2 to 14 mph S | 1% |
| Friday | 76°F | Mostly Sunny | 3 to 10 mph SSW | 2% |
| Friday Night | 48°F | Partly Cloudy | 6 to 12 mph S | 11% |
| Saturday | 69°F | Partly Sunny then Slight Chance Light Rain | 6 mph SSW | 22% |
Forecast source: National Weather Service (api.weather.gov) for King Arthur Park (45.667, -111.128). Updated through the day.
Growing snapshot for King Arthur Park
Last spring frost
May 23
First fall frost
Sep 23
Growing season
123 days
Hardiness zone
5a
More local growing data for King Arthur Park: nearby ZIP 59718 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Amsterdam
Belgrade
Bozeman
Bridger
Churchill
Four Corners
Gallatin Gateway
Gallatin River Ranch
Hebgen Lake Estates
Logan
Manhattan
Ponderosa Pines
Springhill
Three Forks
West Yellowstone
Wheatland
Willow Creek
Climate data from the nearest NOAA station, Bozeman 6 W Exp Farm, Mt (2.4 mi from King Arthur Park). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.