Icicle Group Campground
Tonight: low 41 °F, frost likely, breezy.
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 August, typically 53°F. The coldest are in February, when 1 night in 10 drops to 9°F. Frost is common in January, February, March, April, May, October, November and December.
- Jan24°F 13°FBag comfortable to 15°F · frost 93% · rain or snow 57% of days
- Feb22°F 9°FBag comfortable to 10°F · frost 93% · rain or snow 57% of days
- Mar26°F 17°FBag comfortable to 20°F · frost 87% · rain or snow 49% of days
- Apr31°F 21°FBag comfortable to 20°F · frost 63% · rain or snow 41% of days
- May38°F 30°FBag comfortable to 30°F · frost 16% · rain or snow 31% of days
- Jun43°F 37°FBag comfortable to 40°F · frost 0% · rain or snow 25% of days
- Jul51°F 45°FBag comfortable to 45°F · frost 0% · rain or snow 10% of days
- Aug53°F 46°FBag comfortable to 45°F · frost 0% · rain or snow 11% of days
- Sep (this month)46°F 39°FBag comfortable to 40°F · frost 1% · rain or snow 26% of days
- Oct36°F 29°FBag comfortable to 30°F · frost 27% · rain or snow 42% of days
- Nov28°F 19°FBag comfortable to 20°F · frost 71% · rain or snow 59% of days
- Dec23°F 13°FBag comfortable to 15°F · frost 91% · rain or snow 59% 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 setup looks borderline for this night
You may feel chilly from around 3 a.m.
Your spot sits in a hollow where cold air collects at night.
Best change
Move 20 to 50 meters higher, away from the valley floor or creek.
- On clear, calm nights it is often several degrees warmer there.
This is based on typical values for the gear types you picked, so treat it as an estimate.
Your night
- 10 p.m. to 3 a.m.ComfortableAir around you 51 to 44°F, heavy dew from midnight, gusty from 11 p.m. (up to 28 mph).
- 3 a.m. until morningChilly. Add a layerAir around you 39 to 37°F, frost, gusty from 5 a.m. (up to 31 mph).
Every hour
- 10 p.m.51°Fcomfortable
- 11 p.m.51°Fcomfortable, gusty
- midnight44°Fcomfortable, heavy dew, gusty
- 1 a.m.48°Fcomfortable
- 2 a.m.46°Fcomfortable
- 3 a.m.37°Fchilly, frost
- 4 a.m.37°Fchilly, frost
- 5 a.m.38°Fchilly, frost, gusty
- 6 a.m.39°Fchilly, gusty
- 7 a.m.39°Fchilly
This spot sits about 95 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-7).
What works tonight
The gear this night calls for, for someone who sleeps like you.
- Missing
Sleeping bag
Comfort 35°F or colder
Usually sold as a 26° 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.
- Worth adding
Also useful
A bag liner
Adds a few degrees to the bag you already own.
Before you sleep
- Put on a warm layer and a hat before about 3 a.m., or go to bed already wearing them.
- Eat a proper meal with some fat before bed. Your body keeps burning it through the night.
- Pee right before you get in your bag. Getting out at 3 a.m. in the cold is worse.
- Sleep in dry clothes, not the ones you wore all day. Damp fabric pulls heat out of you.
- Your spot sits lower than the ground around it. On a clear, calm night cold air drains into spots like this, so expect it colder and wetter than the forecast. If you can, move a little higher up, away from the creek or valley floor.
- Stake out every guyline and point the low, narrow end of the tent into the wind.
- Bring shoes, clothes and electronics inside. Anything left out will be wet by morning.
- Open the tent vents and keep the door zip open a bit at the top. Some condensation inside is normal on a night like this, so bring a small towel to wipe it off.
How we estimated this
At the coldest hour (4 a.m.):
- Outside at your spot
- 41°F
- Warmth your shelter holds
- +3 °F
- Clear-sky cooling
- −1 °F
- Low spot
- −6 °F
- Air around you
- 37°F
- Your bag's comfort rating
- 39°F
- Cold ground through what you lie on
- +4 °F
- Your comfort limit
- 43°F
6 °F short, so you will likely be cold.
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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