Horizon Colony has cold winters and pleasant summers, with very little rain
A typical July afternoon reaches 79°, a January night drops to 12°.
A year in Horizon Colony at a glance
Each month’s typical high and low, and what it brings.
What stands out about Horizon Colony’s climate
Read from where Horizon Colony sits among Montana’s towns. The page puts what stands out first.
Warmer than it used to be
The last 30 years in Horizon Colony averaged 1.8° warmer than the 1900s. The biggest change is in January (+5.7°).
A bigger shift than in 86% of U.S. towns.
Change by month
What a year in Horizon Colony feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Rain and snow in Horizon Colony
June is the wettest month and December the driest.
Rain + melted snow by month
Inches of water
Snowfall by month
No snow records from a nearby station.
About 113 frost-free days a year
In half of years the last 32° night comes by May 24 and the first by September 15.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Horizon Colony’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
113 frost-free days. The last frost comes by May 24 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 15.
Months averaging under 55° run from September through May. Heating is 98% of the year’s heating-and-cooling load.
About 9 days a year reach 90°, and July afternoons average 79°.
The nicest months are June, July, August and September. 1.2 miles of trails are waiting.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →How Horizon Colony compares
Against every U.S. town on TownTapestry, each counted once, with its place in Montana.
Horizon Colony weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 32° | 12° | 0.4" | 8° – 35° |
| February | 34° | 13° | 0.4" | -3° – 37° |
| March | 42° | 20° | 0.6" | 13° – 40° |
| April | 52° | 29° | 1.2" | 34° – 45° |
| May | 62° | 38° | 1.9" | 45° – 56° |
| June | 70° | 45° | 3.2" | 55° – 62° |
| July | 79° | 50° | 1.2" | 56° – 73° |
| August | 79° | 49° | 1.1" | 58° – 68° |
| September | 68° | 41° | 1.1" | 51° – 60° |
| October | 54° | 31° | 0.8" | 34° – 49° |
| November | 40° | 21° | 0.6" | 18° – 40° |
| December | 32° | 13° | 0.4" | 10° – 33° |
| Year | 54° | 30° | 12.9" |
Heating and cooling a home in Horizon Colony
98% of the work is heating, so the furnace matters far more than the air conditioner.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from -3° to 37°. June is the most reliable, staying within 8°.
Common questions about Horizon Colony’s climate
What is the coldest month in Horizon Colony?
January, with a typical high of 32° and a low of 12°.
What is the hottest month in Horizon Colony?
July, with a typical high of 79° and a low of 50°. About 9 days a year reach 90°.
When is the first frost in Horizon Colony?
In half of years the first 32° night comes by September 15, and the last spring frost by May 24.
What is the rainiest month in Horizon Colony?
June, with 3.2 inches of rain and melted snow. The year totals 13 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Horizon Colony.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Horizon Colony itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Cut Bank Municipal Airport, MT (10 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. Today’s forecast: National Weather Service.