Fort Peck, MT climate
Fort Peck has cold, snowy winters and warm summers, with very little rain. A typical July afternoon reaches 88°, a January night drops to 4°, and about 41 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Fort Peck feels like
Winter
Spring
Summer
Fall
Fort Peck weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 25° | 4° | 0.3" | 9.8" | 8 | 24 | 2° – 29° |
| February | 31° | 8° | 0.3" | 6.2" | 6 | 18 | -3° – 33° |
| March | 45° | 20° | 0.4" | 5.6" | 7 | 12 | 16° – 42° |
| April | 59° | 31° | 1.0" | 2.5" | 8 | 1 | 39° – 49° |
| May | 69° | 42° | 2.3" | 0.9" | 11 | 0 | 51° – 62° |
| June | 78° | 51° | 2.7" | 0 | 13 | 0 | 60° – 69° |
| July | 88° | 57° | 1.9" | 0 | 9 | 0 | 64° – 79° |
| August | 87° | 55° | 1.4" | 0 | 8 | 0 | 66° – 77° |
| September | 74° | 45° | 1.1" | 0 | 7 | 0 | 55° – 66° |
| October | 58° | 32° | 1.0" | 1.5" | 7 | 1 | 37° – 51° |
| November | 41° | 19° | 0.4" | 5.9" | 6 | 8 | 17° – 40° |
| December | 29° | 8° | 0.4" | 8.3" | 7 | 17 | 4° – 30° |
| Year | 57° | 31° | 13.0" | 40.7" | 95 | 80 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Fort Peck
Fort Peck gets 13 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 95 days a year. Snow covers the ground about 80 days of the year.
About 145 frost-free days a year
In half of years the last 32° night comes by May 8 and the first one by October 1. That leaves about 145 frost-free days for gardens, shorter than 85% of U.S. towns.
Heating and cooling a home in Fort Peck
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Fort Peck, 91% of that work is heating and 9% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Fort Peck compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Fort Peck averaged 1.6° warmer than the 1900s. The biggest change is in January (+4.3°). The shift is larger than in 78% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Fort Peck’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from -3° to 33°. June is the most reliable, staying within 9°.
Common questions about Fort Peck’s climate
What is the coldest month in Fort Peck?
January, with a typical high of 25° and a low of 4°.
What is the hottest month in Fort Peck?
July, with a typical high of 88° and a low of 57°. About 38 days a year reach 90°.
How much snow does Fort Peck get?
About 41 inches in a normal winter, most of it in January.
When is the first frost in Fort Peck?
In half of years the first 32° night comes by October 1, and the last spring frost by May 8.
What is the rainiest month in Fort Peck?
June, with 2.7 inches of rain and melted snow. The year totals 13 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Fort Peck itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Glasgow Intl Airport, MT (16 mi, snow) and Ft Peck Pwr Plt, MT (2 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.