Butte, MT Weather Forecast
Silver Bow County, Montana
The next few hours
A dry overnight, mostly cloudy
It is 42°, but the wind is taking it down to 34° on exposed skin. The sky is mostly cloudy.
Pressure is easing down, 0.03 inHg over the last hour. Nothing in the next day and a half is wet enough to move plans for.
Colour and bar height both show how heavy the rain would look on radar. A dotted line means the model has no reading for that hour, which is not the same as no rain.
Hour by hour
Quiet through the next day and a half
Nothing wet is expected over the next day and a half.
The overnight low settles near 35°. Tomorrow tops out near 50°.
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
28–55°F across the weekThe week runs between 34° and 55°, with Thursday the warmest day of it. There is no real trend across it: one day looks much like the next. Every day in the outlook stays dry.
About the Butte forecast
Butte sits at 45.8962°N, 112.6601°W in Silver Bow County, Montana. The forecast above is drawn for that point from the National Weather Service's own computer models: a seven-day outlook, and a finer-grained one covering the next eighteen hours where it reaches, and the radar and alert panels show what the Weather Service has out over the area right now.
- County
- Silver Bow County
- Coordinates
- 45.8962°N, 112.6601°W
- Population
- 35,701 · 2023 estimate
- Land area
- 715.763 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Butte, and the forecast is for that location, not for every address inside the city limits, and a large city can have real weather differences from one side to the other.
How well can the network see Butte?
The nearest Doppler radar is KMSX (Missoula, MT), 101 miles to the NW. A WSR-88D's lowest routine scan sits half a degree above horizontal, and the earth curves away beneath it, so by the time that beam reaches Butte its center is about 9,800 ft above ground. At that range the beam overshoots the layer where severe weather organizes. The radar is describing the middle of the storm, not its base , which is why a warning for Butte can look unsupported on the mosaic and still be right. Trust the warning over the picture.
The closest instrument actually measuring the air is KBTM · Butte/Mooney Arpt on the ASOS/AWOS network, 9.0 miles away. Near enough to be representative on most days, though a summer thunderstorm can soak one and miss the other entirely.
Beam height is the standard 4/3-earth approximation for the 0.5° scan and assumes normal refraction; it is where the center of the beam is, not its edges, and unusual temperature profiles bend it. Radar siting from the NWS WSR-88D network, station positions from the Montana observing network as of this build.
Forecasts near Butte
- Anaconda-Deer Lodge County, MT27 mi
- Deer Lodge, MT35 mi
- Dillon, MT47 mi
- Helena, MT57 mi
- Belgrade, MT72 mi
- Hamilton, MT76 mi
- Salmon, ID78 mi
- Bozeman, MT79 mi
Elsewhere in Montana
BillingsMissoulaGreat FallsBozemanHelenaKalispellAll Montana forecasts →