What the numbers mean for an outdoor sauna project
Billings has a high climate load. Its Climate Stress Score of 55.8 is above the indexed-metro median of 37.9. The January normal low is 14.4°F, and 5 months have a normal low below freezing.
The primary planning issue in this profile is winter temperature and freeze exposure. The standardized 9 kW session estimate is $2.43, below the indexed-metro median of $2.46; this uses the Montana statewide residential electricity average, not a city utility quote. The selected snowfall record reports 35.0 inches annually.
For construction or maintenance work that is easier in moderate conditions, the monthly normals point to April, May, June, July. This is a climate-screening observation, not a construction schedule or permit recommendation.
Comparison context