Blackleaf, MT Climate

Climate Insight: Blackleaf, MT

The NOAA 1991–2020 climate normals describe Blackleaf, Montana as a location with an annual average temperature of 41°F, ranging from a mean daily high of 56°F to a mean daily low of 27°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00240877, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.

Blackleaf averages an uncharted amount of precipitation a year, predominantly as rainfall, and that matters as much to daily life here as temperature does. The frost-free season averages 86 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near June 9 and the first fall freeze near September 3. As for energy demand, 8,737 heating degree days and 109 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Blackleaf scores 39/100 (Below Average), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.