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Next 12 Hours

Forecast data from the National Digital Forecast Database.

5 Day Forecast

• Thursday
• 
• High: 63 °
• Low: 34 °
• Partly Cloudy

• Friday
• 
• High: 75 °
• Low: 43 °
• Partly Cloudy

• Saturday
• 
• High: 73 °
• Low: 45 °
• Partly Cloudy

• Sunday
• 
• High: 72 °
• Low: 46 °
• Partly Cloudy

• Monday
• 
• High: 72 °
• Low: 48 °
• Clear

Area forecast discussion 
National Weather Service Boise Idaho 
325 am MDT Thursday may 23 2013 


Short term...today through Friday...latest temperatures in the 
Treasure valley were in the 30s to lower 40s. Coldest readings... 
which were found in Nampa...Eagle...and Mountain Home...were just 
above freezing. Light winds...clear skies...and a dry air will allow 
for temperatures to continue to fall to 32f or colder in portions of 
the Treasure valley. Thus...the freeze warning will remain in effect 
until 9 am MDT. A band of clouds stretched across the western Magic 
Valley has slowed down the cooling there as temperatures were at or above 
40f. However...the band may shift to the east long enough to allow 
frost to form in some areas just before sunrise. For now...will 
allow the frost advisory to remain in effect until 9 am MDT. 


Otherwise...a deep closed low centered over Washington this morning 
will move little through tonight. A short wave pivoting around the 
the south side of the low will move into our area this afternoon for 
scattered showers and isolated thunderstorms...mainly in the 
mountains. The wave will move north of the area tonight while a 
second one moves through northern portions of the County Warning Area on Friday for 
a chance of showers and a slight chance of afternoon 
thunderstorms...generally north of a Burns-Ontario-Idaho City line. 
Temperatures will trend warmer through Friday. 


Long term...Friday night through Thursday...closed upper level low 
will remain the dominant weather feature over the Pacific northwest 
through late Saturday - when it moves northeast into Alberta. 
However...only minor changes in sensible weather are forecast as a 
short wave approaches /from the west/ in its wake. Short wave will 
move off to the east early Monday...but progressive pattern will 
continue through next week as an elongated Pacific trough moves 
inland and keeps cooler/wetter weather in place through much of next 
week. Wednesday and Thursday look to be the wettest days overall. 
Temperatures forecast to be at or below normal through the period. 


&& 


Aviation...widespread VFR through 18z. Isolated MVFR-IFR rain and 
snow showers will develop across southeast Oregon and higher terrain of SW 
Idaho after 18z. Snow levels generally 5000 to 6500 feet mean sea level. Minor 
threat of thunderstorm development /same areas/ between 22z and 02z. 
Light west/northwest surface winds - except in the vicinity of thunderstorms. Winds 
aloft will be predominantly westerly and average 10 kts at 10k feet 
mean sea level. 


&& 


Boi watches/warnings/advisories... 
Idaho...freeze warning until 9 am MDT this morning idz012-014. 
Frost advisory until 9 am MDT this morning idz016. 
Or...freeze warning until 9 am MDT this morning orz064. 
&& 


$$ 


Weather.Gov/Boise 


Short term...bw 
long term....Mt 
aviation.....Mt