Lewiston, Idaho Weather Conditions

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Current Conditions

  • 35°
  • Clear
  • Wind: SSE 4 mph
  • Humidity: 96%
  • Visibility: 10.0 miles
  • Dew Point: 34°
  • Pressure: 29.87 in. -
  • Heat Index: 32

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Next 12 Hours

4  am
7  am
10  am
1  pm
4  pm
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
34°
34°
41°
48°
50°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Partly Cloudy
  • High: 50 °
  • Low: 30 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 45 °
  • Low: 23 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 45 °
  • Low: 28 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 46 °
  • Low: 25 °
  • Partly Cloudy
  • Tuesday
  • Clear
  • High: 43 °
  • Low: 16 °
  • Clear

Forecast for Lewiston, Idaho

Updated: 1:00 AM PST on February 27, 2015

  • Friday

    Partly cloudy. High of 50F. Winds from the NE at 5 to 15 mph.

  • Friday Night

    Partly cloudy. Low of 30F. Winds from the NE at 5 to 15 mph.

  • Saturday

    Clear. High of 45F. Winds from the NE at 10 to 15 mph.

  • Saturday Night

    Partly cloudy in the evening, then clear. Low of 23F. Winds from the ENE at 5 to 15 mph.

  • Sunday

    Clear. High of 45F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 28F. Winds less than 5 mph.

  • Monday

    Clear. High of 46F. Winds from the WSW at 5 to 15 mph.

  • Monday Night

    Clear. Low of 25F with a windchill as low as 19F. Winds from the West at 10 to 15 mph.

  • Tuesday

    Clear. High of 43F. Winds from the WNW at 5 to 15 mph.

  • Tuesday Night

    Clear. Low of 16F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 46F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Low of 19F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. High of 48F. Winds less than 5 mph.

  • Thursday Night

    Clear. Low of 32F. Winds from the SE at 5 to 10 mph.

  • Friday

    Clear. High of 48F. Winds less than 5 mph.

  • Friday Night

    Clear. Low of 30F. Winds less than 5 mph.

  • Saturday

    Clear. High of 52F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 32F. Winds less than 5 mph.

  • Sunday

    Clear. High of 52F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 32F. Winds less than 5 mph.

  • Monday

    Clear. High of 54F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 32F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Hepton Lane, Lewiston, ID

Updated: 3:34 AM PST

Temperature: 35.6 °F Dew Point: 32 °F Humidity: 86% Wind: Calm Pressure: 29.11 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: Normal Hill Weather Station, Lewiston, ID

Updated: 3:34 AM PST

Temperature: 36.1 °F Dew Point: 25 °F Humidity: 63% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: Nick's Weather Station, Lewiston, ID

Updated: 3:34 AM PST

Temperature: 34.2 °F Dew Point: 30 °F Humidity: 86% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

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

Updated: 3:34 AM PST

Temperature: 36.0 °F Dew Point: 33 °F Humidity: 90% Wind: Calm Pressure: 29.81 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: Clarkston Heights-Charnita Dr., Clarkston, WA

Updated: 3:24 AM PST

Temperature: 31.8 °F Dew Point: 32 °F Humidity: 99% Wind: Calm Pressure: 29.82 in Hourly Precipitation: - Windchill: 32 °F Graphs

Location: Dan and Judy's, Clarkston, WA

Updated: 3:22 AM PST

Temperature: 34.0 °F Dew Point: 32 °F Humidity: 94% Wind: WNW at 5.8 mph Pressure: 29.63 in Hourly Precipitation: - Windchill: 29 °F Graphs

Location: Clarkston Heights Dove Drive, Clarkston, WA

Updated: 3:34 AM PST

Temperature: 33.8 °F Dew Point: 31 °F Humidity: 89% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: Clarkston Heights - Florence Lane, Clarkston, WA

Updated: 3:32 AM PST

Temperature: 34.0 °F Dew Point: 34 °F Humidity: 99% Wind: Calm Pressure: 29.74 in Hourly Precipitation: - Windchill: 34 °F Graphs

Location: Lapwai-ID, Lapwai, ID

Updated: 3:30 AM PST

Temperature: 44.2 °F Dew Point: - Humidity: 82% Wind: North at - Pressure: 28.64 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: MesoWest Silcott Island WA US AGRIMET, Clarkston, WA

Updated: 2:00 AM PST

Temperature: 37 °F Dew Point: 34 °F Humidity: 87% Wind: WSW at 2 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

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

Updated: 1:15 AM PST

Temperature: 35 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: Owen Mounce Ranch, Lewiston, ID

Updated: 3:23 AM PST

Temperature: 35.3 °F Dew Point: 32 °F Humidity: 87% Wind: SE at 2.0 mph Pressure: 29.73 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: Town of Colton, Colton, WA

Updated: 3:34 AM PST

Temperature: 31.8 °F Dew Point: 29 °F Humidity: 90% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Moose Draw, Troy, ID

Updated: 3:23 AM PST

Temperature: 27.4 °F Dew Point: 26 °F Humidity: 96% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: Westview, Moscow, ID

Updated: 3:32 AM PST

Temperature: 32.5 °F Dew Point: 29 °F Humidity: 88% Wind: East at 2.0 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Eid Rd, foot of Paradise Ridge, Moscow, ID

Updated: 3:34 AM PST

Temperature: 32.2 °F Dew Point: 26 °F Humidity: 76% Wind: East at 7.6 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: 25 °F Graphs

Location: Lamb Road, Troy, ID

Updated: 3:34 AM PST

Temperature: 28.1 °F Dew Point: 27 °F Humidity: 96% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: RAWS MISSION CREEK ID US, Winchester, ID

Updated: 3:03 AM PST

Temperature: 35 °F Dew Point: 30 °F Humidity: 82% Wind: East at 3 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: Montgomery Ridge Road, Anatone, WA

Updated: 3:34 AM PST

Temperature: 31.0 °F Dew Point: -19 °F Humidity: - Wind: South at 4.5 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: Reubens-ID, Reubens, ID

Updated: 3:30 AM PST

Temperature: 33.4 °F Dew Point: - Humidity: 80% Wind: North at - Pressure: 26.17 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Camas Prairie, Reubens, ID

Updated: 3:34 AM PST

Temperature: 32.4 °F Dew Point: 30 °F Humidity: 90% Wind: South at 3.5 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Spokane Washington 
233 am PST Friday Feb 27 2015 


Synopsis... 
a weather system will clip the region today with the best chance 
for rain and mountain snow showers in the Cascades. Cooler, 
breezy, and dry weather is expected on Saturday. Another weather 
system will pass through Monday and Tuesday with wintry weather 
possible especially the Idaho Panhandle. Much colder air will move 
into the area behind this system with temperatures well below 
average for the middle of next week. 




&& 


Discussion... 
for today...the well advertised upper level low is currently 
dropping south along the Washington coast maybe a little slower 
than model guidance had indicated. It still looks like the low 
will continue to drop south along the Washington/or coast this morning and 
then move southeast through central and southern Oregon tonight. 
Wrap around moisture will result in high pops across the east 
slopes of the Cascades and as far east as the deep basin through 
mid morning...then begin to pull south as the low continues it's 
southward trek. Even though the deeper moisture will move south 
there will be enough lingering low level moisture and up-sloping 
flow into the north Cascades to hold onto to some precipitation 
through the afternoon. The remainder of the forecast area will 
remain on the dry side with variable cloudiness through the day. 
As the low drops south the surface pressure gradient will 
increase from northeast to southwest. This will increase winds 
through the afternoon and also allow cooler air to move down the 
Purcell Trench and into the forecast area. Winds were increased 
accordingly but will remain below the breezy category. 


Tonight and Saturday...as the upper low continues to move south 
and east the surface gradient will increase to between 12-13mb 
through the night and into Saturday. 850 mb winds increase to 
between 30-40kts depending on just what guidance one uses. We may 
see a weak inversion tonight with clearing skies and that may 
inhibit mixing these stronger mid level winds down to the surface 
a bit. That may result in slightly less winds overnight but the 
forecast will definitely trend windier. The mixing will not be an 
issue on Saturday with ample sunshine destabilizing the 
atmosphere. As such expect winds to increase later this afternoon 
and overnight. Sustained winds of 15-30 mph with gust 30-40 mph 
can expected down the Okanogan Valley...the Purcell Trench...the 
West Plains...the Palouse and into the Columbia Basin tonight and 
Saturday. 


In addition cool and very dry air will move into the region as the 
low moves out. Relative humidity will drop to 20-30 percent on 
Saturday and combined with the gusty winds could create a control 
challenge if any grass or brush fires get started. Temperatures 
will also cool off by 3-5 degrees from Friday and will be below 
seasonal averages. Tobin 


Saturday night through sunday: the backedge of the trough 
continues to move south out of the area. North to northeasterly 
winds will decrease through the evening hours. Mostly clear skies 
and light winds expected during the overnight hours will lead to 
some very chilly temps come Sunday morning. Widespread min temps 
in the teens to mid 20s are expected. Sunday temperatures rebound 
a bit, but still remain slightly below average for this time of 
the year. Clouds will start to increase late in the afternoon 
ahead of the next weather system moving down the British Columbia coast. 


Monday and tuesday: there are still some model discrepancies as 
to the next weather system moving into the pac northwest. The 00z European model (ecmwf) 
has trended a bit sharper with the trough over the area and 
extending the energy associated with the trough further south and 
not really weakening or shearing it out. Meanwhile the GFS and 
Canadian seem to remain fairly consistent. Confidence is still low 
on this event, but will be trending forecast towards the drier 
GFS/Canadian. 


Main forecast change was to decrease chance of precip across 
central Washington. GFS is showing quite a bit of dry air moving into the 
area late Monday. Also have lowered winds across the area...mainly 
referring to northeast Washington and the north Idaho Panhandle. Northerly 
winds do look to come down the Okanogan Valley and into the basin, 
but have decreased those winds a bit as well. Have northerly winds 
sustained 10 to 20 mph with gusts up to 30 mph through Monday 
night and into Tuesday morning. 


Precipitation that does fall with this system will be fairly 
light. Currently models are showing the best area to be northeast 
Washington and the Idaho Panhandle. Any valleys that do see some snow, it 
will be pretty light, generally an inch or less. Not very 
exciting, but at least it may be something... the mountains could 
pick up 2-3 inches potentially. Any snow that is sticking to the 
ground by Tuesday morning will likely melt during the day. 
Temperatures will be right around freezing during the day across 
the northeast portion of the forecast area, but mostly sunny skies 
will quickly melt any snow. 


Wednesday through friday: the forecast remains dry as an upper 
level ridge builds across the area. Models disagree on a potential 
system for Friday, but that is the European model (ecmwf) with all other models 
saying the fairly Flat Ridge will remain. 


Temperatures Wednesday morning are the coldest temps in the 7 day 
forecast. Even though the colder 850 temps are Tuesday morning 
with that system exiting, Wednesday morning we will have less 
winds, and mostly clear skies which will provide a great scenario 
for cold low temps. By Wednesday our winds will shift to a warmer 
southwesterly flow which will help bring our temperatures back up, 
with US at or just a few degrees below average by Thursday 
afternoon. /Nisbet 


&& 


Aviation... 
06z tafs: a low pressure system near Vancouver Island will drop 
into Oregon Friday morning...with the main effect being an 
increase in -ra across central Washington including keat. Easterly 
upslope flow will trap abundant amounts of low level moisture into 
keat with MVFR conditions likely. IFR stratus can not be ruled out 
with low confidence regarding how far the ceilings will lower. This 
low pressure will pull drier air into NE Washington and north 
Idaho tonight from the northeast, which should limit the threat of 
fog/stratus at kgeg/ksff/kcoe/kpuw/klws. Look for northeast winds 
in excess of 12kts from kszt to kcoe to kgeg to kmwh after 18z. 
NE winds will start to diminish after 03z Saturday. /Ek 




&& 


Preliminary point temps/pops... 
Spokane 43 23 39 20 41 24 / 10 0 0 0 0 0 
Coeur D'Alene 44 23 40 19 43 22 / 10 0 0 0 0 0 
Pullman 47 26 38 20 41 24 / 10 10 0 0 0 0 
Lewiston 49 29 43 22 45 26 / 10 10 0 0 0 0 
Colville 46 25 45 22 46 26 / 10 10 0 0 0 0 
Sandpoint 41 22 38 18 40 22 / 0 0 0 0 0 0 
Kellogg 40 21 34 18 41 25 / 10 10 0 0 0 0 
Moses Lake 52 30 48 23 47 27 / 40 10 0 0 0 0 
Wenatchee 49 32 49 27 48 31 / 60 20 0 0 0 10 
Omak 50 30 48 24 48 28 / 20 30 0 0 0 10 


&& 


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








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