| Heavenly Twins | |
| Elevation Ft: | 9282 |
| Elevation Ref: | [1] |
| Prominence Ft: | 1402 |
| Isolation Mi: | 2.57 |
| Isolation Ref: | [2] |
| Parent Peak: | Saint Mary Peak (9,351 ft) |
| Map: | Montana#USA |
| Map Size: | 270 |
| Label Position: | right |
| Location: | Ravalli County, Montana, US |
| Range: | Bitterroot Range Rocky Mountains |
| Coordinates: | 46.5141°N -114.2981°W |
| Coordinates Ref: | [3] |
| Topo: | USGS Saint Joseph Peak |
Heavenly Twins is a 9282adj=midNaNadj=mid double summit mountain located in Ravalli County, Montana.
Heavenly Twins is located in the Bitterroot Range, which is a subset of the Rocky Mountains. It is situated 11 miles west of Stevensville in the Selway–Bitterroot Wilderness, on land managed by Bitterroot National Forest.[1] The summit lies 2.5 miles east of the Continental Divide and the Idaho–Montana border. The true summit is the south peak which is one-third mile from the 9,243-ft north peak, and the nearest higher neighbor is line parent Saint Mary Peak three miles to the east.[1] Precipitation runoff from the mountain drains into tributaries of the Bitterroot River. Topographic relief is significant as the summit rises 4500abbr=offNaNabbr=off above Big Creek in two miles. This landform's toponym has been officially adopted by the United States Board on Geographic Names.[3] The name refers to Castor and Pollux, also called the heavenly twins.
Based on the Köppen climate classification, Heavenly Twins is located in a subarctic climate zone characterized by long, usually very cold winters, and mild summers.[4] Winter temperatures can drop below −10 °F with wind chill factors below −30 °F.