Weather in Big Arm, Montana
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 07:16 PM ET · Refreshes every hour
73°F
Clear sky
Feels like 64°F
19%
Humidity
13 mph
Wind Speed
About Weather in Big Arm
Big Arm is located in Montana (coordinates: 47.793609°N, 114.27003°W). Weather data is sourced from Open-Meteo, a free and open meteorological API using data from national weather services including NOAA.
All temperatures are displayed in Fahrenheit. Wind speed is in miles per hour.