Coram, MT climate
Coram has chilly, snowy winters and pleasant summers. A typical July afternoon reaches 81°, a January night drops to 18°, and about 115 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Coram feels like
Winter
Spring
Summer
Fall
Coram 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 | 31° | 18° | 2.3" | 32.0" | 18 | 31 | 16° – 32° |
| February | 35° | 18° | 1.5" | 16.0" | 15 | 29 | 13° – 34° |
| March | 44° | 24° | 1.7" | 14.0" | 15 | 30 | 25° – 40° |
| April | 54° | 31° | 1.8" | 3.1" | 14 | 14 | 37° – 49° |
| May | 64° | 38° | 2.2" | 0.5" | 14 | 1 | 46° – 56° |
| June | 70° | 45° | 3.3" | 0 | 15 | 0 | 54° – 65° |
| July | 81° | 49° | 1.3" | 0 | 9 | 0 | 56° – 72° |
| August | 80° | 47° | 1.1" | 0 | 7 | 0 | 59° – 67° |
| September | 69° | 40° | 1.7" | 0 | 10 | 0 | 51° – 59° |
| October | 53° | 31° | 2.2" | 2.0" | 14 | 2 | 37° – 48° |
| November | 39° | 25° | 2.4" | 16.2" | 16 | 13 | 24° – 38° |
| December | 31° | 19° | 2.2" | 31.4" | 18 | 28 | 17° – 31° |
| Year | 54° | 32° | 23.7" | 115.2" | 162 | 147 |
“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 Coram
Coram gets 24 inches of rain and melted snow a year. June is the wettest month and August the driest. Rain or snow falls on about 162 days a year. Snow covers the ground about 147 days of the year.
About 124 frost-free days a year
In half of years the last 32° night comes by May 18 and the first one by September 20. That leaves about 124 frost-free days for gardens, shorter than 96% of U.S. towns.
Heating and cooling a home in Coram
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Coram, 98% of that work is heating and 2% 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 Coram 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 Coram averaged 1.7° warmer than the 1900s. The biggest change is in January (+4.2°). The shift is larger than in 80% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Coram’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 13° to 34°. August is the most reliable, staying within 8°.
Common questions about Coram’s climate
What is the coldest month in Coram?
January, with a typical high of 31° and a low of 18°.
What is the hottest month in Coram?
July, with a typical high of 81° and a low of 49°. About 7 days a year reach 90°.
How much snow does Coram get?
About 115 inches in a normal winter, most of it in January.
When is the first frost in Coram?
In half of years the first 32° night comes by September 20, and the last spring frost by May 18.
What is the rainiest month in Coram?
June, with 3.3 inches of rain and melted snow. The year totals 24 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Coram itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at West Glacier, MT (6 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.