Lewiston, Idaho Weather Conditions

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Current Conditions

  • 81°
  • Clear
  • Wind: Variable 4 mph
  • Humidity: 28%
  • Visibility: 10.0 miles
  • Dew Point: 45°
  • Pressure: 29.73 in. -

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Next 12 Hours

2  pm
5  pm
8  pm
11  pm
2  am
Clear
Clear
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Clear
Clear
81°
82°
73°
68°
61°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Partly Cloudy
  • High: 86 °
  • Low: 54 °
  • Partly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 70 °
  • Low: 50 °
  • Partly Cloudy
  • Thursday
  • Clear
  • High: 81 °
  • Low: 55 °
  • Clear
  • Friday
  • Clear
  • High: 86 °
  • Low: 57 °
  • Clear
  • Saturday
  • Clear
  • High: 90 °
  • Low: 57 °
  • Clear

Forecast for Lewiston, Idaho

Updated: 2:00 PM PDT on September 02, 2014

  • Tuesday

    Clear in the morning, then partly cloudy. High of 86F. Winds from the NNE at 5 to 20 mph shifting to the WNW in the afternoon.

  • Tuesday Night

    Partly cloudy. Low of 54F. Breezy. Winds from the West at 10 to 20 mph.

  • Wednesday

    Partly cloudy. High of 70F. Winds from the West at 10 to 15 mph.

  • Wednesday Night

    Partly cloudy in the evening, then clear. Low of 50F. Winds less than 5 mph.

  • Thursday

    Clear. High of 81F. Winds less than 5 mph.

  • Thursday Night

    Clear. Low of 55F. Winds less than 5 mph.

  • Friday

    Clear. High of 86F. Winds less than 5 mph.

  • Friday Night

    Clear. Low of 57F. Winds less than 5 mph.

  • Saturday

    Partly cloudy in the morning, then clear. High of 90F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 57F. Winds less than 5 mph.

  • Sunday

    Clear. High of 88F. Winds from the SW at 5 to 10 mph shifting to the WNW in the afternoon.

  • Sunday Night

    Clear. Low of 57F. Winds from the SW at 5 to 10 mph.

  • Monday

    Partly cloudy. High of 79F. Winds from the WSW at 10 to 15 mph.

  • Monday Night

    Clear. Low of 54F. Winds from the SW at 5 to 10 mph.

  • Tuesday

    Clear. High of 79F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 57F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 77F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Low of 55F. Winds less than 5 mph.

  • Thursday

    Clear. High of 79F. Winds less than 5 mph.

  • Thursday Night

    Clear. Low of 57F. Winds less than 5 mph.

  • Friday

    Clear. High of 79F. Winds less than 5 mph.

  • Friday Night

    Clear. Low of 59F. Winds less than 5 mph.

  • Saturday

    Clear. High of 75F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Normal Hill Weather Station, Lewiston, ID

Updated: 2:14 PM PDT

Temperature: 79.2 °F Dew Point: 18 °F Humidity: 10% Wind: Calm Pressure: 28.88 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Nick's Weather Station, Lewiston, ID

Updated: 2:14 PM PDT

Temperature: 80.6 °F Dew Point: 50 °F Humidity: 34% Wind: North at 2.2 mph Pressure: 29.72 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Harvest Vista/Pheasant Trail Estates @ Schaub Ranch, Lewiston, ID

Updated: 2:14 PM PDT

Temperature: 80.6 °F Dew Point: 50 °F Humidity: 35% Wind: NW at 8.0 mph Pressure: 29.63 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Clarkston Heights, Clarkston, WA

Updated: 2:14 PM PDT

Temperature: 81.5 °F Dew Point: 52 °F Humidity: 37% Wind: NE at 4.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Lapwai-ID, Lapwai, ID

Updated: 1:50 PM PDT

Temperature: 84.9 °F Dew Point: - Humidity: 30% Wind: North at - Pressure: 28.65 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: HADS ALPOWA CREEK AT MOUTH NEAR CLARK WA US WADOECO, Clarkston, WA

Updated: 11:15 AM PDT

Temperature: 77 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: ITD Cottonwood ID US, Juliaetta, ID

Updated: 1:15 PM PDT

Temperature: 82 °F Dew Point: 44 °F Humidity: 26% Wind: WSW at 3 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: MesoWest Alpowa Summit WA US WA DOT, Pomeroy, WA

Updated: 1:10 PM PDT

Temperature: 73 °F Dew Point: 51 °F Humidity: 46% Wind: SW at 22 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: ITD Shirrod Hill ID US, Genesee, ID

Updated: 1:14 PM PDT

Temperature: 73 °F Dew Point: 44 °F Humidity: 34% Wind: West at 11 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Town of Colton, Colton, WA

Updated: 2:14 PM PDT

Temperature: 74.6 °F Dew Point: 43 °F Humidity: 32% Wind: SSE at 7.0 mph Pressure: 29.63 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Wawawai -Baker Ranch -South Rim, Colton, WA

Updated: 11:10 AM HST

Temperature: 72.6 °F Dew Point: 47 °F Humidity: 40% Wind: NW at 19.0 mph Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Westview, Moscow, ID

Updated: 2:04 PM PDT

Temperature: 73.8 °F Dew Point: 46 °F Humidity: 37% Wind: SW at 13.0 mph Pressure: 29.74 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Lamb Road, Troy, ID

Updated: 2:10 PM PDT

Temperature: 73.5 °F Dew Point: 48 °F Humidity: 40% Wind: West at 2.0 mph Pressure: 29.73 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: RAWS MISSION CREEK ID US, Winchester, ID

Updated: 1:03 PM PDT

Temperature: 72 °F Dew Point: 43 °F Humidity: 35% Wind: NW at 8 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Montgomery Ridge Road, Anatone, WA

Updated: 2:11 PM PDT

Temperature: 72.0 °F Dew Point: 45 °F Humidity: 38% Wind: NNE at 9.2 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Reubens-ID, Reubens, ID

Updated: 1:50 PM PDT

Temperature: 72.0 °F Dew Point: - Humidity: 34% Wind: North at - Pressure: 26.25 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Camas Prairie, Reubens, ID

Updated: 2:14 PM PDT

Temperature: 76.5 °F Dew Point: 46 °F Humidity: 34% Wind: NNW at 6.9 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: ITD Winchester ID US,

Updated: 8:14 PM GMT

Temperature: 72 °F Dew Point: 44 °F Humidity: 36% Wind: NE at 7 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Spokane Washington 
1034 am PDT Tuesday Sep 2 2014 


Synopsis... 
breezy winds are expected late this afternoon and early this 
evening with the passage of a cold front. The front will also 
bring the potential for showers and thunderstorms to the Idaho 
Panhandle and northern Washington tonight into Wednesday. Thursday 
morning will be cold with low temperatures down into the lower to 
mid 30s for the Mountain Valley locations. The return of high 
pressure Thursday through the weekend will bring several days of 
dry weather, light winds, and warmer temperatures. 




&& 


Discussion... 
today and tonight: satellite imagery early this morning shows a 
potent shortwave trough of lower pressure moving south along the 
British Columbia coastline. The trough axis is currently located over central British Columbia 
with water vapor imagery showing a well defined dry slot at 50n 
135w in the Gulf of Alaska. This dry slot is a good approximation 
of the back edge of the cold front. Models have this front progged 
to cross east of the Cascade mtns into the western basin after 
5:00 PM this evening and then pushing into the Spokane area/Palouse 
by about 8:00 PM this evening. The mountains will see the best 
chances for precip with the front; however, the basin up into the 
Spokane area, Coeur D'Alene area down to the Palouse and l-c 
valley may only see some passing mid level clouds and possibly 
some sprinkles or sporadic showers. There will be strong cold air 
advection with the front, which will result in winds picking up 
quite a bit along and behind the front. Strongest winds are 
expected down the east slopes of the Cascade mtns out over into 
the western basin for the evening hours. Sustained wind speeds of 
20-25 mph with gusts up to 40 mph will be possible. This is just 
below our criteria for a Wind Advisory and a highlight is not 
expected at this time. The windy conditions may also result in 
some blowing dust across the Moses Lake area, and could blow 
across much of the basin. This may impact travel along I-90, with 
the highest risk between George and Ritzville. 


Behind the cold front we will see the upper level trough swing 
through for the overnight hours. There is enough mid level 
instability that widespread showers and even some thunderstorms 
will be possible. Best areas for showers and thunderstorms will 
be across the Okanogan Highlands over to the northern Panhandle. 
The general progression of these showers and thunderstorms will 
be to the east and southeast. This is expected to lead to at least 
a chance for showers and thunderstorms across the Upper Basin to 
the northern portions of the Palouse. Any thunderstorms that do 
develop will be capable of drawing down stronger wind gusts aloft. 


Wednesday and Wednesday night: the surface low will begin to track 
away from the region across the Canadian border along the State of 
Montana. With the low tracking away from the region, this will 
allow surface gradients to weaken with a trend toward less windy 
conditions across the region. There will be some moisture that 
wraps around the low into the region, so a chance for showers and 
thunderstorms will be possible into the afternoon and early 
evening. Best chances for showers and thunderstorms will be in 
extreme eastern Washington and in the Idaho Panhandle. Temperature will be 
much cooler on Wednesday. Much of extreme eastern Washington and the Idaho 
Panhandle will only warm up into the low to mid 60s with some 
locations in the Panhandle having a hard time breaking 60 degrees. 
Showers will dissipate overnight with skies clearing out. This 
will result in temperatures plummeting overnight with the cold 
pockets across the northern mountain and Panhandle valleys 
dipping close to freezing. Frost will be possible, so any 
sensitive vegetation should be protected for the potential of 
frost or freeze damage. This will include locations such as 
Republic and Deer Park. /Svh 


Thursday through saturday: a split flow pattern over the Pacific 
northwest will bring dry weather and light winds to the region 
Thursday through Saturday. A light east to northeast pressure 
gradient is expected to usher in dry surface dewpoints. The dry 
air mass, light winds, and clear skies will allow for large 
diurnal temperature swings. The northern valleys around Colville, 
Deer Park, Priest Lake and Bonners Ferry will likely experience 
low temperatures in the upper 30s and low 40s Friday and Saturday 
morning with afternoon highs in the low 80s. Jacket weather in the 
morning and shorts by the afternoon. 


Sunday and monday: the European model (ecmwf) and GFS are in pretty good agreement 
that the next shortwave trough will arrive in the Sunday/Monday 
time frame. The trough will come at US from the northwest which is 
a relatively dry trajectory this time of year, so the forecast for 
precipitation is pretty low at this time. If the medium range 
models hold true, the cold front associated with this trough will 
bring a period of breezy conditions Sunday or Monday and a cooling 
trend early next week. /Gkoch 


&& 


Aviation... 
18z tafs: a strong cold front will cross east of the Cascade mtns 
late this afternoon through this evening. This front will produce 
gusty winds from the west and will arrive at keat and kmwh between 
23-02z and then push into the kgeg, ksff, kcoe, kpuw and klws taf 
sites around 03-04z. Winds will remain breezy through the 
overnight hours. Showers and thunderstorms are expected across the 
northern mtns late this afternoon into tonight and then begin to 
push into kgeg, ksff and kcoe and possibly as far south as kpuw 
Wednesday morning and last at least through the end of the taf 
period. Conditions will remain VFR at all taf sites with the 
possible exception of kcoe after 12z wedenesday if shower 
development is more intense and widespread than currently 
forecast. /Mjf 


&& 


Preliminary point temps/pops... 
Spokane 75 50 63 46 75 49 / 10 60 40 10 0 0 
Coeur D'Alene 76 50 60 42 75 44 / 10 60 50 20 0 0 
Pullman 77 45 65 40 75 43 / 0 10 20 10 0 0 
Lewiston 84 53 71 49 80 51 / 0 10 10 10 0 0 
Colville 78 48 67 38 78 41 / 10 60 40 10 0 0 
Sandpoint 74 45 58 39 73 40 / 10 70 80 20 10 0 
Kellogg 71 47 56 39 71 43 / 10 50 60 30 10 0 
Moses Lake 82 51 76 45 80 49 / 0 10 0 0 0 0 
Wenatchee 80 56 77 52 79 54 / 10 10 0 0 0 0 
Omak 80 52 74 43 80 48 / 20 40 10 10 0 0 


&& 


Otx watches/warnings/advisories... 
Idaho...none. 
Washington...none. 
&& 


$$ 








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