Big Arm, Montana Weather
Big Arm, Montana — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, soil and crop conditions for Big Arm, Lake County.
Full aviation weather for Big Arm is published on the Polson Airport (K8S1) page, 14 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 6 airfields within reach of Big Arm have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near Big Arm: Ronan Airport (K7S0) 30 km · Hot Springs Airport (KS09) 31 km · Kalispell City Airport (KS27) 42 km · St Ignatius Airport (K52S) 55 km · Glacier Park International Airport (KGPI) 57 km
Conditions reported at K8S1 describe the airfield itself. Weather 14 km away can differ, particularly in terrain or near the coast. For conditions at Big Arm specifically, see the current conditions and forecast above.
Soil conditions, frost risk and crop weather for Big Arm.
About Big Arm, Montana
Big Arm unfolds along the western edge of Flathead Lake, a broad, shimmering expanse that dictates the very breath of this place. It lies 27.5 miles south of Kalispell, MT (from Kalispell, MT: bearing 178°T), and is situated 9.5 miles north-west of Polson. The land here rises gently from the water's edge, a mosaic of sun-drenched meadows and stands of ponderosa pine, their needles whispering secrets on the breeze. In the distance, the rugged peaks of the Mission Mountains stand sentinel, their snow-capped crowns catching the slanted gold of afternoon light. The air itself carries a clean, crisp scent, a blend of pine resin, sun-baked earth, and the cool, mineral tang of the lake. Here, the houses are scattered, respecting the generous sweep of the landscape, their colors echoing the muted tones of the surrounding hills. The history of Big Arm is intrinsically tied to the bounty of Flathead Lake and the fertile soil of the valley. Early settlers, drawn by the promise of rich farmland and abundant fishing, established a way of life that has largely endured. The local economy, while diversified, still leans heavily on the agricultural heritage, with orchards yielding crisp apples and cherries, and vineyards producing wines that capture the essence of the Montana sun. The lake itself is a constant source of livelihood and recreation, its clear waters inviting boaters, anglers, and swimmers throughout the long, bright summers. Small businesses, often family-run, lend a personal touch to the shops and eateries, fostering a quiet camaraderie among residents. The rhythm of Big Arm is one of seasons, of planting and harvest, of the lake's placid surface reflecting the ever-changing sky.
Live animated radar for Big Arm and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | Big Arm, Lake County, Montana |
| Coordinates | 47.797997°N, 114.294845°W |
| Timezone | Mountain Time (America/Denver) |
| ZIP Code(s) | 59910, 59860 |
| Area Code | 406 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Big Arm, Montana Weather Page
This page provides live weather conditions and forecasts for Big Arm, Montana, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Big Arm includes coordinates 47.797997°N, 114.294845°W, situated in Lake County. ZIP code 59910, 59860. Telephone area code: 406. Timezone: Mountain Time (America/Denver).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
