Gallatin National Forest
wooden bridge crossing mountain river with pine, aspend and blue sky in the background
Weather
 


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Weather conditions in The Gallatin National Forest are the definition of extreme. Elevations range from 12,799 feet in the forest to 5,000 feet. This allows for a wide range of temperatures. The forest can hit -40 degrees in the winter, and averages in the 70's during the summer. Snowfall is abundant in all areas of the forest.

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The "Gallatin" as it's known requires that you are well prepared for any kind of weather conditions. We camp in the Gallatin every summer and fall, and come prepared for a wide variety of weather. Items of great importance are sunscreen, a hat that can effectively block sun from the face, a wind blocking jacket, a warm long sleeve top, a couple pairs of wool socks, broken in boots, a pair of sandals, a light pair of hiking pants, warmer pants, a matching set of long underwear, gloves and a knit hat. A sturdy, weatheproof tent and a sleeping bag that is rated at least to 30 degrees F in real world use are essential in this national forest.

A good supply of water during the summer months is essential to prevent dehydration. It is fairly easy to find water in the forest. A water filter makes things much easier. Many of the water pumps in the campgrounds close in the fall so a filter is handy. Driving back to town for water is not fun.

Afternoon summer thunderstorms are very common, but brief. These can often contain lightning so be careful not to be exposed on a ridge during this time. Some of the craziest thunderstorms I have ever witnessed occurred in this forest. Hail is not uncommon.

Make sure you have tested your sleeping bag in real world conditions. Many bags rated as 20 degree bags are really 40 degree bags. It's not fun to be stuck
with a cold bag far from a shopping center. The mountains can get cold at night, often dropping into the 40's even when the daytime temps hit the 80's. It can drop to freezing any night of the year!

Mosquitos can be a problem in early and mid summer, but tend to really phase out in late August and September.

Seasonal averages for West Yellowstone, Montana in the Gallatin National Forest:

January maximum: 28.6 minimum: 9.6
April maximum: 49.4 minimum: 26
July maximum: 79.6 minimum: 46.7
October maximum: 55.7 minimum: 29.4

Image note: Taken on a remote river in the forest near the Absaroka-Beartooth Wilderness. This bridge is known as "Four Mile".The bridge is in pretty nice shape considering how far out it is. This was a good area to observe water birds such as the American Dipper, known as the only true aquatic songbird in North America. They like to fly low and fast over tumbling water and get their food from the river bottom. They truly are stunt birds. I've seen them diving into places no other bird would dare try. They are stout looking birds with a propensity to bobble up and down when standing.



 

 

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