Lewiston, Idaho Weather Conditions

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Current Conditions

  • 74°
  • Clear
  • Wind: Calm
  • Humidity: 21%
  • Visibility: 10.0 miles
  • Dew Point: 31°
  • Pressure: 29.78 in. -

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Next 12 Hours

4  pm
7  pm
10  pm
1  am
4  am
Clear
Clear
Mostly Cloudy
Mostly Cloudy
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Mostly Cloudy
Mostly Cloudy
73°
69°
62°
59°
56°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Chance of Rain
  • High: 74 °
  • Low: 52 °
  • Chance of Rain
  • Saturday
  • Chance of Rain
  • High: 61 °
  • Low: 46 °
  • Chance of Rain
  • Sunday
  • Clear
  • High: 72 °
  • Low: 49 °
  • Clear
  • Monday
  • Clear
  • High: 74 °
  • Low: 49 °
  • Clear
  • Tuesday
  • Partly Cloudy
  • High: 80 °
  • Low: 53 °
  • Partly Cloudy

Forecast for Lewiston, Idaho

Updated: 3:00 PM PDT on September 4, 2015

  • Tonight

    Mostly cloudy. A chance of showers and thunderstorms in the evening...then rain showers and a chance of thunderstorms overnight. Lows in the mid to upper 40s. West wind 5 to 15 mph. Chance of precipitation 90 percent. Rainfall amounts up to a half of an inch possible...except higher amounts possible in thunderstorms.

  • Saturday

    A chance of rain in the morning...then rain showers likely and a chance of thunderstorms in the afternoon. Highs in the mid 50s to lower 60s. West wind 5 to 15 mph in the afternoon. Chance of precipitation 70 percent. Rainfall amounts up to a half of an inch possible...except higher amounts possible in thunderstorms.

  • Saturday Night

    Mostly cloudy. A chance of rain showers through the night. Lows in the mid to upper 40s. Gusts up to 25 mph in the evening. Chance of precipitation 50 percent. Rainfall amounts less than a tenth of an inch.

  • Sunday

    Partly cloudy. Warmer. Highs in the mid 60s to lower 70s.

  • Sunday Night

    Partly cloudy. Lows in the mid to upper 40s.

  • Labor Day and Monday Night

    Partly cloudy. Highs in the mid 60s to lower 70s. Lows in the mid to upper 40s.

  • Tuesday and Tuesday Night

    Mostly clear. Highs in the 70s. Lows in the upper 40s to lower 50s.

  • Wednesday through Friday

    Mostly clear. Highs in the upper 70s to upper 80s. Lows in the 50s.

Severe Weather Alert Descriptions

 Record Report  Statement as of 01:26 am PDT on September 04, 2015


... Record low temperature set at Ephrata Airport...

A record low temperature of 47 degrees was set at Ephrata Airport
yesterday. This ties the old record of 47 set in 2008. Records have
been kept here since 1948.




Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: 9th Avenue, Lewiston, ID

Updated: 4:00 PM PDT

Temperature: 74.8 °F Dew Point: 44 °F Humidity: 33% Wind: North at - Pressure: 29.64 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Hepton Lane, Lewiston, ID

Updated: 4:04 PM PDT

Temperature: 74.8 °F Dew Point: 33 °F Humidity: 22% Wind: NW at 3.6 mph Pressure: 29.07 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Nick's Weather Station, Lewiston, ID

Updated: 4:04 PM PDT

Temperature: 73.1 °F Dew Point: 41 °F Humidity: 32% Wind: Calm Pressure: 29.76 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Downtown Clarkston 8TH ST, Clarkston, WA

Updated: 4:04 PM PDT

Temperature: 84.7 °F Dew Point: 39 °F Humidity: 20% Wind: East at 2.7 mph Pressure: 29.61 in Hourly Precipitation: - Heat Index: 82 °F Graphs

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

Updated: 4:04 PM PDT

Temperature: 72.7 °F Dew Point: 38 °F Humidity: 28% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Clarkston Golf & Country Club, Clarkston, WA

Updated: 3:51 PM PDT

Temperature: 81.5 °F Dew Point: 42 °F Humidity: 25% Wind: SSE at 1.1 mph Pressure: 29.80 in Hourly Precipitation: - Heat Index: 80 °F Graphs

Location: Dan and Judy's, Clarkston, WA

Updated: 4:04 PM PDT

Temperature: 79.9 °F Dew Point: 36 °F Humidity: 21% Wind: West at 5.3 mph Pressure: 28.54 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Linda Vista Street, Clarkston, WA

Updated: 4:00 PM PDT

Temperature: 92.8 °F Dew Point: 50 °F Humidity: 23% Wind: North at - Pressure: 29.81 in Hourly Precipitation: - Heat Index: 90 °F Graphs

Location: Clarkston Heights Dove Drive, Clarkston, WA

Updated: 4:04 PM PDT

Temperature: 79.5 °F Dew Point: 45 °F Humidity: 30% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Owen Mounce Ranch, Lewiston, ID

Updated: 3:54 PM PDT

Temperature: 66.2 °F Dew Point: 37 °F Humidity: 34% Wind: NNW at 2.0 mph Pressure: 29.65 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Town of Colton, Colton, WA

Updated: 4:04 PM PDT

Temperature: 68.6 °F Dew Point: 29 °F Humidity: 23% Wind: Calm Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Wawawai - C. Ray Baker - South Rim, Colton, WA

Updated: 1:04 PM HST

Temperature: 70.0 °F Dew Point: 35 °F Humidity: 28% Wind: NW at 4.0 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Moose Draw, Troy, ID

Updated: 3:56 PM PDT

Temperature: 68.5 °F Dew Point: 35 °F Humidity: 29% Wind: ESE at 2.0 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: APRSWXNET, Moscow, ID

Updated: 3:42 PM PDT

Temperature: 71 °F Dew Point: 32 °F Humidity: 24% Wind: WSW at 2 mph Pressure: 29.71 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

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

Updated: 4:04 PM PDT

Temperature: 65.3 °F Dew Point: 31 °F Humidity: 27% Wind: NE at 9.8 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Lamb Road, Troy, ID

Updated: 4:01 PM PDT

Temperature: 67.7 °F Dew Point: 36 °F Humidity: 31% Wind: Calm Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Montgomery Ridge Road, Anatone, WA

Updated: 3:59 PM PDT

Temperature: 63.0 °F Dew Point: 33 °F Humidity: 33% Wind: NNE at 6.9 mph Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Camas Prairie, Reubens, ID

Updated: 4:04 PM PDT

Temperature: 60.0 °F Dew Point: 40 °F Humidity: 48% Wind: ENE at 10.4 mph Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Spokane Washington 
226 PM PDT Friday Sep 4 2015 


Synopsis... 


A low pressure system will bring widespread rain and much cooler 
temperatures to the Idaho Panhandle and portions of eastern 
Washington Saturday. Light showers may linger mainly across the 
mountains Sunday and Monday. A drying and warming trend is 
expected next week. 


&& 


Discussion... 


..wet and much cooler for the eastern third of Washington and 
north Idaho on Saturday... 


Tonight through Saturday night...a wet period is in store for the 
eastern third of Washington and north Idaho bringing much cooler 
temperatures and some needed rain. A closed low over SW Washington 
this afternoon will drop into central Oregon this evening...NE 
Oregon overnight...and then northwest Montana by early Saturday evening. 
There are several aspects of this system to talk about and we'll 
start with precipitation. 


Precipitation: models continue to show a band of stratiform rain 
developing on the north side of this low track with a band of wrap 
around rain as well on the back side of the low as it tracks 
across the area. The low track will favor the highest rain totals 
over the north Idaho Panhandle, NE Washington mountains, 
Spokane/Coeur D'Alene area, Washington Palouse, the possibly the 
far eastern portions of the Columbia Basin. Most of the rain will 
fall overnight tonight into early Saturday evening. Models details 
differ on precise amounts...but general consensus favors around a 
half inch of rain in these areas with local pockets up to an inch. 
The Okanogan Highlands and Moses Lake areas should be on the 
western fringes of this rain with little to no rain for the 
valleys along the east slopes of the Cascades as well as the 
Okanogan Valley and Moses Lake area. 


Wind: as the low drops into Oregon tonight surface pressure 
gradients increase over northern Washington and near the Cascades 
supporting breezy to locally windy conditions mainly on ridge 
tops and through channeled valleys. 850mb winds out of the north 
of 20-30 kts tonight will especially favor the northern valleys 
and then as 850mb winds turn to the west-northwest on Saturday the 
focus of the strongest winds should shift to The East Slope 
Cascade valleys such as the Methow, Lake Chelan, and Wenatchee 
River Valley. 


Temperatures: 850mb temps fall to 4-6c over far eastern Washington and 
north Idaho on Saturday due to a rain cooled air mass. High temps 
in the valleys will only reach the low to mid 50s with upper 30s 
and 40s in the mountains. Snow levels are expected to fall over 
eastern Washington/north Idaho to 6500-7000 feet. 


Thunderstorms: isolated thunderstorms are possible tonight around 
the Spokane area, Palouse, Camas Prairie, Lewiston area, and 
central Panhandle mountains as strong forcing and mid level 
instability is present in these areas. Isolated thunderstorms are 
also possible over the high terrain of the Cascades through early 
this evening under the cold pool aloft with some strikes already 
occurring along the west slopes. On Saturday it will remain 
unstable with a 500mb cold pool of -20c over the region. If sun 
breaks materialize a few short lived storms could develop. Jw 


Sunday through Wednesday night...this interval starts out with a 
general longwave trof lingering in the area but the feature 
appears slightly less intense due to the exiting synoptic scale 
low pressure system in Montana heading east and away from the 
area. This this allows a bit of shortwave ridging to nest in the 
general trof and gives it that slightly less intense look about 
it. A second much weaker mesoscale disturbance passes through 
Sunday night and exits Monday. The combination of the disturbance 
exit and some lingering instability and northwest flow allow for 
pops to persist a bit longer in the north Idaho Panhandle Monday 
while locations further to the west clear out with the northerly 
flow ahead of positively tilted ridging just to the west. This 
shortwave passage may also allow for some breezy conditions and 
shifting winds Sunday afternoon and evening. Then a positively 
tilted ridge is overhead of the forecast area allowing for a dry 
Monday night. This ridge flattens out a bit on Tuesday yet the 
conditions are expected to remain dry. An almost flat zonal flow 
void of shortwave migration remains for Tuesday night into 
Wednesday that in turn gets amplified by yet more positively 
tilted shortwave ridging moving in from the west allowing for a 
dry Wednesday night. Forecast daytime high temperatures remain on 
the cool side of what would be considered normal for this time of 
year with a slight warming trend due to the transition from 
longwave trof to more of a ridge. /Pelatti 


Thurs through Saturday morning...with a broad upper ridge shown 
by the majority of model guidance, expect well above normal high 
temperatures in the 80s for most towns and no chance of pcpn. The 
largest uncertainty is with the European model (ecmwf) showing a transient short- 
wave trough moving across srn BC. The ensemble means still support 
a dry fcst, though.Bz 


&& 


Aviation... 
18z tafs: instability resulting from having an area of low 
pressure within close proximity to the forecast area keeps both 
stratiform and convective cloud cover in the forecast through much 
of the time interval. In addition showers and some thunderstorms 
remain mentioned this afternoon and early evening but the wettest 
interval is to occur overnight tonight and on into tomorrow as a 
wet occluded frontal zone pivots and wraps a bit around the edge 
of the low which keeps in in place over eastern Washington and 
north Idaho from about 9z on and beyond. /Pelatti 


&& 


Preliminary point temps/pops... 
Spokane 46 53 43 66 45 68 / 80 100 50 10 10 10 
Coeur D'Alene 46 53 43 65 44 67 / 80 90 70 10 10 10 
Pullman 44 53 41 64 43 66 / 90 70 60 10 10 10 
Lewiston 50 60 48 72 50 72 / 80 70 60 10 10 10 
Colville 51 57 44 67 41 70 / 40 90 50 20 20 10 
Sandpoint 47 54 45 64 40 66 / 60 100 60 20 20 20 
Kellogg 46 52 43 63 40 63 / 70 80 70 30 30 20 
Moses Lake 53 71 49 75 48 76 / 30 50 10 10 10 10 
Wenatchee 53 72 52 75 51 78 / 10 10 10 10 10 10 
Omak 52 73 46 75 45 78 / 10 10 10 10 10 10 


&& 


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


$$ 






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