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.
This Afternoon
56°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 2pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 56. Northeast wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for King Arthur Park
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 56°F | Showers And Thunderstorms Likely | 5 mph NE | 74% |
| 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% |
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 19, 2026.