Manhattan, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Manhattan, a town in Gallatin County, Montana.
This Afternoon
46°F
Sunny
Sunny. High near 46, with temperatures falling to around 42 in the afternoon. Wind around 0 mph.
7-day forecast for Manhattan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 46°F | Sunny | 0 mph | 0% |
| Tonight | 26°F | Patchy Fog | 2 mph SSE | 0% |
| Thursday | 48°F | Patchy Fog then Partly Sunny | 2 mph SSW | 0% |
| Thursday Night | 27°F | Partly Cloudy | 2 mph S | 9% |
| Friday | 48°F | Sunny | 2 mph S | 0% |
| Friday Night | 28°F | Partly Cloudy | 5 mph S | 0% |
| Saturday | 53°F | Mostly Sunny | 0 to 3 mph SSE | 0% |
| Saturday Night | 29°F | Partly Cloudy | 0 to 6 mph SSE | 0% |
| Sunday | 60°F | Mostly Sunny | 3 mph S | 1% |
| Sunday Night | 31°F | Mostly Cloudy | 1 to 5 mph S | 1% |
| Monday | 53°F | Partly Sunny | 1 mph SSE | 2% |
| Monday Night | 30°F | Mostly Cloudy | 1 mph SSE | 2% |
| Tuesday | 55°F | Mostly Sunny | 2 mph SSE | 3% |
| Tuesday Night | 32°F | Partly Cloudy | 0 to 5 mph S | 4% |
Forecast source: National Weather Service (api.weather.gov) for Manhattan (45.859, -111.330). Updated through the day.
Growing snapshot for Manhattan
Last spring frost
May 26
First fall frost
Sep 15
Growing season
111 days
Hardiness zone
5a
More local growing data for Manhattan: nearby ZIP 59741 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
King Arthur Park
Logan
Ponderosa Pines
Springhill
Three Forks
West Yellowstone
Wheatland
Willow Creek
Climate data from the nearest NOAA station, Logan Landfill, Mt (7.6 mi from Manhattan). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.