Gallatin County, MT Weather


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United States / Montana / / Gallatin County / Cities / Zip Codes

The most pleasant months of the year for Gallatin County are August, July and June. In Gallatin County, there are 4 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Gallatin County with an average high temperature of 82.7°, which ranks it as cooler than most places in Montana. December is the snowiest month in Gallatin County with 12.0 inches of snow, and 8 months of the year have significant snowfall. Days with noticeable humidity are rare throughout the year.

Today's Weather - Gallatin, MT

10 AM PST

Mostly Cloudy then Showers And Thunderstorms

48°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TodayMostly Cloudy then Showers And Thunderstorms53° / 23°SW 15 to 18 mph
TuesdayLight Snow Likely43° / 22°WSW 12 to 18 mph
WednesdayChance Light Snow then Snow Showers Likely41° / 29°W 7 to 13 mph
ThursdayChance Light Snow46° / 30°W 10 mph
FridayChance Light Snow then Snow Showers Likely46° / 30°WNW 7 to 12 mph
SaturdayMostly Sunny then Slight Chance Light Rain55° / 36°SSW 7 to 12 mph
SundaySlight Chance Light Snow then Chance Showers And Thunderstorms59° / 38°SW 9 to 16 mph

Weather Highlights

Summer High: the July high is around 83 degrees
Winter Low: the January low is 10
Rain: averages 18 inches of rain a year
Snow: averages 61 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Gallatin County area is 8.6 (10=best), which means it is more comfortable than most places in Montana.

8.6 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7.8. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


Average Monthly High and Low (°F)
HighLow
January34° 10°
February37° 13°
March46° 20°
April55° 28°
May64° 35°
June73° 42°
July83° 47°
August82° 45°
September72° 37°
October58° 29°
November42° 18°
December31°
Hot, Freezing, Rainy, Snowy Days: Gallatin
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January03086
February02775
March02895
April022103
May011131
June13120
July6190
August6180
September1780
October02182
November02784
December03086

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

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