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Mountain Home, Idaho 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Mountain Home ID
National Weather Service Forecast for: Mountain Home ID
Issued by: National Weather Service Boise, ID
Updated: 3:34 pm MDT Aug 13, 2025
 
Tonight

Tonight: Mostly clear, with a low around 65. Northwest wind 6 to 13 mph, with gusts as high as 23 mph.
Mostly Clear
Thursday

Thursday: Sunny and hot, with a high near 93. Northwest wind 7 to 15 mph, with gusts as high as 24 mph.
Hot
Thursday
Night
Thursday Night: Mostly clear, with a low around 62. North northwest wind 6 to 14 mph, with gusts as high as 23 mph.
Mostly Clear
Friday

Friday: Sunny and hot, with a high near 92. West northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Hot
Friday
Night
Friday Night: Mostly clear, with a low around 62. Northwest wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 21 mph.
Mostly Clear
Saturday

Saturday: Sunny and hot, with a high near 92.
Hot
Saturday
Night
Saturday Night: Partly cloudy, with a low around 62.
Partly Cloudy
Sunday

Sunday: Sunny and hot, with a high near 92.
Hot
Sunday
Night
Sunday Night: Partly cloudy, with a low around 61.
Partly Cloudy
Lo 65 °F Hi 93 °F Lo 62 °F Hi 92 °F Lo 62 °F Hi 92 °F Lo 62 °F Hi 92 °F Lo 61 °F

 

Tonight
 
Mostly clear, with a low around 65. Northwest wind 6 to 13 mph, with gusts as high as 23 mph.
Thursday
 
Sunny and hot, with a high near 93. Northwest wind 7 to 15 mph, with gusts as high as 24 mph.
Thursday Night
 
Mostly clear, with a low around 62. North northwest wind 6 to 14 mph, with gusts as high as 23 mph.
Friday
 
Sunny and hot, with a high near 92. West northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Friday Night
 
Mostly clear, with a low around 62. Northwest wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 21 mph.
Saturday
 
Sunny and hot, with a high near 92.
Saturday Night
 
Partly cloudy, with a low around 62.
Sunday
 
Sunny and hot, with a high near 92.
Sunday Night
 
Partly cloudy, with a low around 61.
Monday
 
Sunny and hot, with a high near 94.
Monday Night
 
Mostly clear, with a low around 62.
Tuesday
 
Sunny and hot, with a high near 96.
Tuesday Night
 
Mostly clear, with a low around 63.
Wednesday
 
Sunny and hot, with a high near 95.

 

Forecast from NOAA-NWS for Mountain Home ID.

Weather Forecast Discussion
272
FXUS65 KBOI 132044
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
244 PM MDT Wed Aug 13 2025

.SHORT TERM...Tonight through Friday night...The upper high
that`s brought the recent heat will shift further east on
Thursday, placing the region in dry west-southwest flow aloft.
In response, high temperatures will drop 5 to 8 degrees from
today to Thursday, then hold steady into Friday. South-central
Idaho remains on the fringe of monsoon moisture and keeps enough
daytime instability to support a slight chance of afternoon
thunderstorms along the ID/NV south of the western Magic Valley
Thursday and Friday. A deepening trough off the West Coast will
turn winds more SWly and begin increasing moisture across SE
Oregon and the w-central ID mtns on Friday. The air mass
remains too stable aloft for shower/storm development but will
see an increase surface dew points and RH. Winds are breezy on
Thursday relaxing some on Friday as the surface pressure
gradient weakens.

.LONG TERM...Saturday through Wednesday...Southwest flow will
dominate through Wednesday, thanks to an upper-level low over
the Gulf of Alaska and a building ridge over the Four Corners
region. Saturday afternoon, a cold front will enter our area
from the northwest and stall out in eastern Oregon. This front
will coincide with a good stream of Pacific moisture, which will
increase PWATs to near the 90th percentile (ensemble mean
values surpass an inch in some areas). While it still looks like
the better axis of moisture will set up west of our area, there
will be enough to support chances of precipitation west of a
line roughly from Rome to McCall. For now, the chances of
precipitation range from 15-50% with a 15-20% chance of
thunder, increasing as you move west from the aforementioned
line. However, if the stream of Pacific moisture shifts east,
chances may need to be increased. Come Sunday afternoon, height
falls aloft and PWATs near the 70th percentile will allow for a
more widespread chance of showers/thunder as peak heating
destabilizes the atmosphere. Chances of showers outside of the
Snake Plane Sunday afternoon range from 15-40% with a 15-30%
chance of thunderstorms. The chances of showers/thunderstorms
within the Snake Plane are non-zero...but keeping them under 15%
for now.

There is a 15-20% chance of showers/thunder in far western Baker
county come Monday afternoon. However, aside from that, dry air
advecting across our area will keep us dry beyond Sunday.
Temperatures will be near normal on Saturday, before warming a
couple of degrees each day through Tuesday. Temperatures Tuesday
and Wednesday will be similar and lean a few degrees above
normal.

&&

.AVIATION...VFR. Isolated thunderstorms south of KTWF this
afternoon through Thu/02z. High density altitude this afternoon
due to hot temperatures. Smoke from wildfires over West
Central Mtns and near KMYL. Surface winds: W-NW 8-15 kt with
gusts to 22 kt. Winds aloft at 10kft MSL: W-NW 10-20 kt.

KBOI...VFR. High density altitude. Surface winds: NW 10-15 kt
with gusts to 22 kt this afternoon/evening.

&&


.BOI WATCHES/WARNINGS/ADVISORIES...
ID...None.
OR...Heat Advisory until 9 PM MDT /8 PM PDT/ this evening ORZ064.

&&

$$

www.weather.gov/Boise

Interact with us via social media:
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SHORT TERM...DG
LONG TERM....NF
AVIATION.....NF
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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