Manhattan, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Manhattan, a town in Gallatin County, Montana.
This Afternoon
59°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Cloudy, with a high near 59. North northwest wind around 3 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Manhattan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 59°F | Chance Showers And Thunderstorms | 3 mph NNW | 38% |
| Tonight | 44°F | Chance Light Rain then Areas Of Fog | 0 to 3 mph NW | 31% |
| Sunday | 67°F | Areas Of Fog then Mostly Sunny | 1 mph NW | 5% |
| Sunday Night | 41°F | Mostly Clear | 2 mph ESE | 0% |
| Monday | 73°F | Sunny | 1 mph ESE | 0% |
| Monday Night | 42°F | Mostly Clear | 3 mph ESE | 0% |
| Tuesday | 76°F | Sunny | 1 mph ENE | 0% |
| Tuesday Night | 46°F | Partly Cloudy | 2 mph E | 2% |
| Wednesday | 78°F | Mostly Sunny | 2 mph SE | 1% |
| Wednesday Night | 45°F | Partly Cloudy | 5 mph S | 7% |
| Thursday | 79°F | Sunny | 0 to 3 mph WNW | 0% |
| Thursday Night | 46°F | Mostly Clear | 1 to 5 mph SE | 4% |
| Friday | 79°F | Mostly Sunny | 3 mph S | 2% |
| Friday Night | 45°F | Partly Cloudy | 7 mph SSE | 11% |
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 Sep 20, 2026.