Creston, MT Climate

Climate Insight: Creston, MT

The NOAA 1991–2020 climate normals describe Creston, Montana as a location with an annual average temperature of 44°F, ranging from a mean daily high of 56°F to a mean daily low of 33°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00242104, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.

Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Creston sees about 19.3 inches of precipitation a year, with 50.6 inches typically falling as snow. The frost-free season averages 136 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 12 and the first fall freeze near September 25. On the energy side, 7,666 heating degree days and 192 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Creston scores 34/100 (Below Average), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. For planning purposes, look to the monthly tables above: shoulder seasons bring the mildest highs and lows, summer brings July-driven heat, and deep winter brings January-driven cold. Treat every figure here as a thirty-year average rather than a forecast - individual years routinely run warmer, cooler, wetter, or drier than the normal.