Jerome, Idaho 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

690
FXUS65 KBOI 141014
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
314 AM MST Sat Feb 14 2026

.SHORT TERM...Today through Monday night...A flat short wave trough in
southwest flow aloft will bring light rain and snow to the Northern
25% of our CWA today through Sunday morning. Snowfall accumulations
will be minimal and limited to mountain peaks above 6 kft MSL. The
warm frontal band will shift Northward tonight through Sunday night
as the flow aloft becomes more southerly ahead of a strong Pacific
upper low approaching the California coast. Our area will become
gradually warmer and drier through Sunday night.

A cold front ahead of the Pacific low will approach our Oregon
zones Monday morning, bringing continuous precipitation over SE
Oregon and the W-Central ID mountains by the early afternoon.
Widespread precipitation will then be expected over all areas by
Monday late afternoon/early evening. Relatively warmer
temperatures will keep precipitation as rain over low-elevation
valleys and rain-snow mixes over the mountains through Monday
evening. The cold front will cool mountain temperatures into the
upper 20s and lower snow levels into the 4- 5 kft range through
Monday night, which may favor continuous snow accumulations
around 2" over most mountain areas.


.LONG TERM...Tuesday through Saturday...On Tuesday, showers will
continue as moist southwest flow redevelops ahead of a deep and cold
upper low moving into the Pacific Northwest. Snow levels on Tuesday
will be much lower as the colder air advances, around 2500-3500
feet, just above the lowest valley floors. However, any heavier
showers could bring a rain snow mix even to the Treasure Valley, but
no snow accumulations are expected. The mountains will see light
additional snow accumulations, generally 1-4 inches in mountain
valleys and 3-7 inches above 6000 feet MSL. Highs Tuesday will be
around 10 degrees cooler than Monday, which will be near normal.
Winds will be breezy as the previous system exits and the upper low
approaches our area.

The low will weaken and move overhead on Wednesday, bringing even
colder air into the area. This will promote continued snow showers
and bring snow levels down to valley floors. However, any snow
amounts should be light as most of the energy associated with the
low passes us to the south. For lower elevations, there is around a
20-40% chance of at least a dusting of snow, with only minimal
chances of more than 4 inches of snow (our advisory criteria) in
mountain valleys. Winds will remain breezy with temperatures cooling
another 5 degrees or so from Tuesday.

Models continue to highlight the potential for another shortwave to
drop south along the British Columbia coast into the Pacific
Northwest Thursday and Friday. This system will be cold enough for
snow at all elevations, and depending on the track could pick up
Pacific moisture before it moves inland. This pattern brings the
highest chance of valley snow of the period, with a 50-70% chance of
valley snow across Thursday and Friday, and a 20-40% chance of at
least an inch. Several inches of snow are likely across the
mountains. While snow amounts across the area are currently favored
to be light, this system will need to be closely monitored due to
the potential for transportation impacts from snow even in valley
locations. On Saturday, precipitation chances will decrease to
around 20-50% under moist west to northwest flow ahead of another
deep low over the Gulf of Alaska. The active pattern will keep winds
breezy Thursday through Saturday, and temperatures will remain
around 5-10 degrees below normal.


&&

.AVIATION...Mainly VFR across the south under mid-high level
ceilings, except MVFR to IFR across the north (near KBNO/KBKE/KMYL)
as light precipitation increases this morning. Snow levels 4500-5500
ft MSL. Snow levels increasing to 5500-6000 ft MSL by late
afternoon. Surface winds: SE-SW 5-15 kt. Winds aloft at 10kft MSL:
SW 15-30 kt.

KBOI...VFR with mid-high level ceilings. Light showers may develop
over the foothills today but should stay north of the terminal.
Surface winds: SE 7-12 kt.

Sunday Outlook...Light precipitation and low VFR to MVFR ceilings
across the north continue with snow levels 5000-5500 ft MSL. Dry
with VFR conditions across the south. Surface winds: SE-SW 5-15 kt,
except variable less than 10 kt in the Snake Basin..


&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...None.
OR...None.

&&

$$

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SHORT TERM...JY
LONG TERM....ST
AVIATION.....ST