West Bridger Cabin
Tonight: low 48 °F, strong gusts.
Nights by month
Night lows from 2016 to 2025: a typical night, and the cold one that comes 1 night in 10.
The mildest nights are in July, typically 56°F. The coldest are in February, when 1 night in 10 drops to -11°F. Frost is common in January, February, March, April, May, October, November and December.
- Jan22°F 3°FBag comfortable to 5°F · frost 91% · rain or snow 23% of days
- Feb17°F -11°FBag comfortable to -10°F · frost 91% · rain or snow 35% of days
- Mar24°F 11°FBag comfortable to 10°F · frost 88% · rain or snow 35% of days
- Apr30°F 18°FBag comfortable to 20°F · frost 59% · rain or snow 46% of days
- May39°F 31°FBag comfortable to 30°F · frost 16% · rain or snow 52% of days
- Jun49°F 41°FBag comfortable to 40°F · frost 0% · rain or snow 44% of days
- Jul56°F 49°FBag comfortable to 50°F · frost 0% · rain or snow 34% of days
- Aug55°F 48°FBag comfortable to 50°F · frost 0% · rain or snow 29% of days
- Sep (this month)48°F 38°FBag comfortable to 40°F · frost 4% · rain or snow 26% of days
- Oct37°F 22°FBag comfortable to 25°F · frost 36% · rain or snow 30% of days
- Nov29°F 13°FBag comfortable to 15°F · frost 64% · rain or snow 25% of days
- Dec24°F 4°FBag comfortable to 5°F · frost 79% · rain or snow 27% of days
| = 32°F
History: ERA5 and ERA5-Land reanalysis via Open-Meteo, corrected to the site's elevation. Bag rating: the comfort rating that keeps you warm in a tent on 9 of 10 nights that month.
Tonight
Worth a lookFriday, September 25, 10 p.m. to 7 a.m.
Your selected gear looks warm enough
About 11 °F to spare at the coldest hour.
This is based on typical values for the gear types you picked, so treat it as an estimate.
Your night
- 10 p.m. until morningComfortableAir around you 73 to 50°F, strong gusts from midnight (up to 42 mph).
Every hour
- 10 p.m.73°Fcomfortable
- 11 p.m.72°Fcomfortable
- midnight66°Fcomfortable, strong gusts
- 1 a.m.62°Fcomfortable, gusty
- 2 a.m.61°Fcomfortable, gusty
- 3 a.m.58°Fcomfortable
- 4 a.m.56°Fcomfortable, gusty
- 5 a.m.53°Fcomfortable, gusty
- 6 a.m.51°Fcomfortable, gusty
- 7 a.m.50°Fcomfortable, gusty
This spot sits about 58 m below the land around it. On clear, calm nights cold air pools here, so expect it colder and wetter than the forecast.
Times are local time at your spot (GMT-6).
What works tonight
The gear this night calls for, for someone who sleeps like you.
- You have this
Sleeping bag
Comfort 45°F or colder
Usually sold as a 36° bag. The number in a bag's name is the limit, not the comfort.
- You have this
Underneath you
R1.5 or more
The R-value says how well a pad keeps the cold ground out.
Before you sleep
- Stake out every guyline and point the low, narrow end of the tent into the wind.
- Gusts get strong during the night. Do not pitch or park under dead trees or big dead branches.
How we estimated this
At the coldest hour (7 a.m.):
- Outside at your spot
- 48°F
- Warmth your shelter holds
- +2 °F
- Clear-sky cooling
- −1 °F
- Air around you
- 49°F
- Your bag's comfort rating
- 39°F
- Your comfort limit
- 39°F
10 °F to spare, so warm enough.
Assumptions
- Bag categories use typical ratings as sold: summer about 50 °F (10 °C), 3-season about 30 °F (-1 °C), winter about 15 °F (-9 °C). The number in a bag's name is usually its lower limit, so its comfort rating is about 9 °F (5 °C) warmer.
- What you lie on: foam mat about R2, thin air pad about R1.5, insulated pad about R3.5, winter pad R5 and up, van bed about R4, air mattress about R0.5. Colder ground needs a higher R-value.
- Shelters hold a few degrees early in the night and less towards morning. Wind and clear, calm skies take warmth away.
- Weather: Open-Meteo forecast for your spot, on a grid of a few kilometers, corrected to its height.
- These are rules of thumb, not measurements. People and gear vary.
A forecast, not a promise. Mountains, valleys and water make their own weather, so trust what you see and feel on site. Terms and liability
Checked for a double-wall tent, a 3-season bag and a thin air pad. Check your own gear here.
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