Mountain Home, Idaho Weather Conditions

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Current Conditions

  • 40°
  • Clear
  • Wind: WNW 15 mph
  • Humidity: 88%
  • Visibility: 10.0 miles
  • Dew Point: 37°
  • Pressure: 29.99 in. +
  • Heat Index: 32

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Next 12 Hours

7  am
10  am
1  pm
4  pm
7  pm
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Clear
  • High: 66 °
  • Low: 41 °
  • Clear
  • Sunday
  • Clear
  • High: 71 °
  • Low: 43 °
  • Clear
  • Monday
  • Clear
  • High: 74 °
  • Low: 48 °
  • Clear
  • Tuesday
  • Clear
  • High: 78 °
  • Low: 51 °
  • Clear
  • Wednesday
  • Partly Cloudy
  • High: 80 °
  • Low: 52 °
  • Partly Cloudy

Forecast for Mountain Home, Idaho

Updated: 3:48 am MDT on April 30, 2016

  • Today

    Partly cloudy. A 20 percent chance of rain showers in the morning. Highs 63 to 68. Breezy. Northwest winds 10 to 20 mph with gusts to 30 mph.

  • Tonight

    Partly cloudy. Lows 39 to 45. Breezy. Northwest winds 10 to 20 mph with gusts to 30 mph in the evening...becoming north up to 10 mph after midnight.

  • Sunday

    Mostly sunny. Highs 66 to 71. Breezy. Southeast winds 10 to 20 mph. Gusts to 30 mph in the afternoon.

  • Sunday Night

    Mostly clear. Lows 40 to 47. Southeast winds up to 10 mph.

  • Monday

    Sunny. Highs 71 to 76. Southeast winds 10 to 15 mph. Gusts to 25 mph in the afternoon.

  • Monday Night through Tuesday Night

    Mostly clear. Lows 41 to 51. Highs 71 to 79.

  • Wednesday

    Mostly sunny. Highs 76 to 81.

  • Wednesday Night

    Mostly cloudy. Lows 46 to 52.

  • Thursday

    Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs 73 to 78.

  • Thursday Night

    Mostly cloudy with a 20 percent chance of rain showers. Lows 44 to 50.

  • Friday

    Partly cloudy with a 20 percent chance of rain showers and thunderstorms. Highs 71 to 76.

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NWS Forecaster Discussion

Area forecast discussion 
National Weather Service Boise Idaho 
344 am MDT Sat Apr 30 2016 

Short through Sunday...a broad upper trough is 
situated over the western states early this morning with an upper 
ridge just off the coast. The main energy within the trough will 
shift south and east away from the forecast area today while a 
weak circulation located along the Montana and Idaho border moves 
south across the forecast area. This will bring a chance of 
showers to the area through this evening but mainly over the high 
terrain on the Idaho side. There may be just enough instability 
for an afternoon or early evening thunderstorm so kept a slight 
chance mention in the forecast. Surface pressure gradient remains 
fairly tight today and will again produce breezy conditions this 
afternoon and evening...especially across eastern Oregon the upper 
Treasure valley and Owyhee County. 

The upper ridge ridge just off the coast will build inland across the 
Pacific northwest and northern rockies through the weekend while 
a trough remains over the southwest states. This will bring a 
warming and drying trend to the forecast area under easterly flow 
aloft. Surface gradient relaxes on Sunday with downslope easterly 
flow at the surface aiding the warming trend for the Treasure 

Long term...Sunday night through upper ridge over the 
northern rockies will dominate on Monday. Southerly flow aloft will 
draw some limited moisture northward from Nevada for a slight chance 
of afternoon showers along the Nevada border and in the west central 
mountains. Otherwise...skies will be mostly clear with temperatures 
above normal. The ridge will slowly shift east as the next Pacific 
trough enters the west Tuesday and Wednesday. The shower chances 
will increase for the remainder of the week as the trough 
splits...forming a large upper closed low which is prognosticated to move 
into the southwestern U.S. And Great Basin by Friday. The warming 
trend will continue through midweek /near 80f in the lower valleys 
on Wednesday/...then cool slightly by the end of the week. 


Aviation...mainly VFR. Isolated to scattered showers /mainly over 
the higher terrain/ of southwest Idaho and Baker County in southeast 
Oregon. Slight chance of thunderstorms after 18z. Showers will 
decrease in coverage and become isolated after 03z. Surface 
winds...northwest 10 knots or less increasing to 10-20 knots with 
gusts to 30 knots after 18z...diminishing after 03z. Winds aloft 
near 10k feet mean sea level...north 10-20 knots becoming east after 03z. 

Outlook for Sunday...isolated showers over the higher terrain of 
central Idaho and along the Nevada border after 18z...otherwise VFR 
with partly cloudy skies. 


Hydrology...the Bruneau and Jarbidge rivers continue to run high 
in Owyhee County with some smaller tributaries likely running 
bankfull. Diurnal peaks for the East Fork of the Jarbidge River 
and the East Fork of the Bruneau River trended up again compared 
to the previous day. This will keep the Bruneau River at Hot 
Springs running high with the latest observation a little more 
than a foot below flood stage. No flooding is expected on the 
mainstem of the Bruneau...but a good high elevation snowpack 
remains in the Upper Basin and warming temperatures through the 
weekend and early next week will keep streamflows high. 


Boi watches/warnings/advisories... 





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