Brooks, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brooks, a community in Fergus County, Montana.
This Afternoon
73°F
Partly Sunny
Partly sunny, with a high near 73. North wind around 9 mph.
7-day forecast for Brooks
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Partly Sunny | 9 mph N | 8% |
| Tonight | 52°F | Slight Chance Showers And Thunderstorms then Chance Rain | 5 to 8 mph NE | 47% |
| Saturday | 59°F | Rain Likely then Showers And Thunderstorms Likely | 6 to 9 mph NE | 60% |
| Saturday Night | 50°F | Rain Likely | 2 to 7 mph NE | 70% |
| Sunday | 66°F | Chance Light Rain | 5 mph ENE | 35% |
| Sunday Night | 48°F | Partly Cloudy | 5 to 8 mph ESE | 1% |
| Monday | 75°F | Sunny | 3 mph S | 0% |
| Monday Night | 51°F | Mostly Clear | 3 to 8 mph S | 0% |
| Tuesday | 77°F | Sunny | 5 mph WSW | 1% |
| Tuesday Night | 52°F | Mostly Clear | 6 mph ESE | 2% |
| Wednesday | 77°F | Sunny | 5 mph SW | 2% |
| Wednesday Night | 52°F | Mostly Clear | 6 mph SE | 1% |
| Thursday | 79°F | Sunny | 6 mph S | 2% |
| Thursday Night | 53°F | Mostly Clear | 7 mph SSE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Brooks (47.205, -109.421). Updated through the day.
Growing snapshot for Brooks
Last spring frost
May 14
First fall frost
Sep 28
Growing season
135 days
Hardiness zone
4b
More local growing data for Brooks: nearby ZIP 59457 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Ayers Ranch Colony
Coffee Creek
Deerfield Colony
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Fords Creek Colony
Grass Range
Hilger
King Ranch Colony
Lewistown
Lewistown Heights
Moore
Roy
Warm Spring Creek
Winifred
Climate data from the nearest NOAA station, Lewistown, Mt (6.7 mi from Brooks). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.