Challis, Idaho Weather Conditions

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Current Conditions

  • 26°
  • Overcast
  • Wind: North 14 mph
  • Humidity: 69%
  • Visibility: 10.0 miles
  • Dew Point: 17°
  • Pressure: 29.86 in. +
  • Heat Index: 14

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Next 12 Hours

9  am
12  pm
3  pm
6  pm
9  pm
Snow Showers
Snow Showers
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Snow Showers
  • High: 26 °
  • Low: 6 °
  • Snow Showers
  • Thursday
  • Clear
  • High: 23 °
  • Low: -2 °
  • Clear
  • Friday
  • Clear
  • High: 22 °
  • Low: -1 °
  • Clear
  • Saturday
  • Clear
  • High: 24 °
  • Low: 3 °
  • Clear
  • Sunday
  • Clear
  • High: 27 °
  • Low: 3 °
  • Clear

Forecast for Challis, Idaho

Updated: 3:05 am MST on November 25, 2015

Winter Weather Advisory in effect until 11 am MST Thursday...
  • Today

    Snow. Snow accumulation of 1 to 3 inches. Highs 20 to 28.

  • Tonight

    Areas of blowing snow in the evening. Snow in the evening...then a chance of snow after midnight. Colder. Snow accumulation up to 2 inches. Lows 1 below to 9 above zero.

  • Thanksgiving Day

    Mostly cloudy. A chance of snow in the morning...then a slight chance of snow in the afternoon. Highs 13 to 23.

  • Thursday Night

    Partly cloudy. Colder. Lows 9 below to 1 above zero.

  • Friday

    Mostly sunny. Highs 16 to 26.

  • Friday Night

    Partly cloudy. Lows 1 below to 8 above zero.

  • Saturday and Saturday Night

    Partly cloudy. A slight chance of snow. Highs 18 to 26. Lows 1 below to 9 above zero.

  • Sunday

    Partly sunny with a slight chance of snow. Highs 19 to 26.

  • Sunday Night

    Partly cloudy with a slight chance of snow. Lows 2 to 9.

  • Monday through Tuesday

    Partly cloudy. Highs 21 to 29. Lows 2 to 12.

Severe Weather Alert Descriptions

 Winter Weather Advisory  Statement as of 3:16 am MST on November 25, 2015

... Winter Weather Advisory remains in effect until 11 am MST

* impacts/timing... snow will begin early this morning and persist
into Thursday morning. Combination of snow along with blowing
and drifting snow may create slick driving conditions.

* Snow accumulations... 3 to 6 inches along with blowing and
drifting snow.

* Locations... Hailey... Craters of the Moon... Arco and MacKay.

Precautionary/preparedness actions...

A Winter Weather Advisory for snow and blowing snow means that
visibilities will be limited due to a combination of falling and
blowing snow. Use caution when traveling... especially in open

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NWS Forecaster Discussion

Area forecast discussion 
National Weather Service Pocatello Idaho 
213 am MST Wednesday Nov 25 2015 

Short through Friday night. WV/infrared imagery showing 
upper low has shifted southeast and is currently over northwestern 
Nevada. Significant forcing is causing rain/snow over southwestern 
Idaho. Models are suggesting a cold front will strengthen as it 
crosses from Nevada into Utah later this morning with a band of heavy 
snow directed right at the eastern Magic Valley and south Central 
Highlands. NAM intensifies precipitation along a band further north along 
the Montana border late this morning...also suggested by our local WRF 
model. Expecting snow amounts of 4 to 6 inches across the southern 
half of the central mountains across to Island Park. Main brunt of 
system will impact the southern half of our forecast area 
beginning with Burley and Shoshone early this morning...shifting 
east across zones 22 and into zone 23...24 and 25 later this 
afternoon. Accumulations above 6000 feet could see 10 to 14 inches 
through tomorrow afternoon. Concern is also for strong down-valley 
winds developing across the snake plain this morning...further 
complicating things with the potential for blowing snow. Models 
push cold front eastward throughout the day...but it seems to 
stall along the Wasatch Range while moisture continues to wrap 
around the middle-level low through Friday. Models suggest tapering 
off the precipitation as much of the dynamics shift to the east. 

Long term...Friday night through Wednesday. Models again having a very 
difficult time through the extended. Upper low lingers then meanders 
around the Great Basin before lifting toward the northern plains 
Sunday. GFS and European model (ecmwf) differ on timing and placement of the low with 
resulting differences in quantitative precipitation forecast and temperature expectations. GFS further 
north and slower than the European model (ecmwf) thus warmer and wetter. Solutions 
further complicated by handling of energy coming into Pacific coast 
Monday. GFS again further north/faster and much wetter than the 
European model (ecmwf) with hints at an atmospheric river type event pushing into the 
coastal states and reaching east Idaho by Wednesday. Opted toward a 
blend of both solutions through the extended which remains close to 
previous forecast. Dmh 

Aviation...even in the short term there is still quite a bit of 
uncertainty with the unfolding of this event over east Idaho. Quite 
a bit of model spread on the start of the precipitation at each of 
the terminal sites though they are seeming to favor onset shortly 
after sunrise at kbyi/ksun and a middle-afternoon start for kpih/kida. 
Temperature profiles close to the surface will be tricky for determining 
snow/rain for kpih but still favor snow at all terminals through the 
event. Northerly gradient continues to strengthen through the day so 
blowing snow remains a possibility especially kida through the 
afternoon/evening. Overall trend favors conditions lowering through 
the day to at least MVFR but likely IFR at all sites once the snow 
does settle in. Do not expect to make significant changes to current 
terminals other than adjusting for latest timing expectations. Dmh 

Pih watches/warnings/advisories... 
Winter Weather Advisory from 5 am early this morning to 11 am 
MST Thursday for idz019>021-023>025-031-032. 

Winter Storm Warning from 5 am early this morning to 11 am MST 
Thursday for idz017-022. 



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