Luther, MT climate
Luther has chilly, snowy winters and pleasant summers, with very little rain. A typical July afternoon reaches 81°, a January night drops to 16°, and about 72 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Luther feels like
Winter
Spring
Summer
Fall
Luther 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 | 30-yr range |
|---|---|---|---|---|---|---|
| January | 37° | 16° | 0.6" | 9.6" | 4 | 19° – 31° |
| February | 38° | 16° | 0.8" | 15.1" | 5 | 14° – 36° |
| March | 46° | 24° | 1.2" | 13.7" | 6 | 25° – 42° |
| April | 53° | 30° | 2.1" | 8.8" | 7 | 35° – 46° |
| May | 62° | 38° | 3.6" | 1.6" | 9 | 45° – 54° |
| June | 71° | 46° | 2.7" | 0 | 10 | 52° – 64° |
| July | 81° | 52° | 1.6" | 0 | 7 | 56° – 73° |
| August | 80° | 51° | 1.2" | 0 | 6 | 59° – 70° |
| September | 70° | 43° | 1.5" | 0.5" | 6 | 52° – 62° |
| October | 56° | 33° | 1.8" | 4.7" | 5 | 36° – 51° |
| November | 44° | 24° | 0.9" | 7.4" | 4 | 25° – 44° |
| December | 36° | 16° | 0.7" | 10.8" | 4 | 18° – 32° |
| Year | 56° | 32° | 18.7" | 72.2" | 72 |
“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 Luther
Luther gets 19 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 72 days a year.
About 106 frost-free days a year
In half of years the last 32° night comes by June 3 and the first one by September 19. That leaves about 106 frost-free days for gardens, shorter than 99% of U.S. towns.
Heating and cooling a home in Luther
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Luther, 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 Luther 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 Luther averaged 1.7° warmer than the 1900s. The biggest change is in January (+4.5°). The shift is larger than in 82% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Luther’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 14° to 36°. May is the most reliable, staying within 10°.
Common questions about Luther’s climate
What is the coldest month in Luther?
December, with a typical high of 36° and a low of 16°.
What is the hottest month in Luther?
July, with a typical high of 81° and a low of 52°. About 6 days a year reach 90°.
How much snow does Luther get?
About 72 inches in a normal winter, most of it in February.
When is the first frost in Luther?
In half of years the first 32° night comes by September 19, and the last spring frost by June 3.
What is the rainiest month in Luther?
May, with 3.6 inches of rain and melted snow. The year totals 19 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Luther itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Fishtail, MT (12 mi, snow) and Red Lodge, MT (11 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.