Lewiston, Idaho Weather Conditions

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Current Conditions

  • 58°
  • Mostly Cloudy
  • Wind: West 6 mph
  • Humidity: 78%
  • Visibility: 10.0 miles
  • Dew Point: 51°
  • Pressure: 29.86 in. +

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Next 12 Hours

5  am
8  am
11  am
2  pm
5  pm
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
54°
54°
63°
66°
66°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Partly Cloudy
  • High: 66 °
  • Low: 46 °
  • Partly Cloudy
  • Wednesday
  • Clear
  • High: 68 °
  • Low: 45 °
  • Clear
  • Thursday
  • Partly Cloudy
  • High: 72 °
  • Low: 50 °
  • Partly Cloudy
  • Friday
  • Partly Cloudy
  • High: 75 °
  • Low: 52 °
  • Partly Cloudy
  • Saturday
  • Chance of Rain
  • High: 77 °
  • Low: 54 °
  • Chance of Rain

Forecast for Lewiston, Idaho

Updated: 2:00 AM PDT on September 30, 2014

  • Tuesday

    Partly cloudy. High of 66F. Winds from the WNW at 5 to 15 mph.

  • Tuesday Night

    Partly cloudy in the evening, then clear. Low of 46F. Winds from the SSW at 5 to 10 mph.

  • Wednesday

    Partly cloudy in the morning, then clear. High of 68F. Winds from the SW at 5 to 10 mph.

  • Wednesday Night

    Clear in the evening, then partly cloudy. Low of 45F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. High of 72F. Winds less than 5 mph.

  • Thursday Night

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

  • Friday

    Partly cloudy in the morning, then clear. High of 75F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Low of 52F. Winds less than 5 mph.

  • Saturday

    Partly cloudy with a chance of rain in the afternoon. High of 77F. Winds less than 5 mph. Chance of rain 20%.

  • Saturday Night

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

  • Sunday

    Clear. High of 79F. Winds from the West at 5 to 10 mph.

  • Sunday Night

    Partly cloudy. Low of 54F. Winds less than 5 mph.

  • Monday

    Clear. High of 79F. Winds from the SSW at 5 to 10 mph shifting to the West in the afternoon.

  • Monday Night

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

  • Tuesday

    Clear. High of 77F. Winds from the West at 5 to 15 mph.

  • Tuesday Night

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

  • Wednesday

    Clear. High of 72F. Winds less than 5 mph.

  • Wednesday Night

    Partly cloudy. Low of 45F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. High of 70F. Winds less than 5 mph.

  • Thursday Night

    Partly cloudy. Low of 45F. Winds less than 5 mph.

  • Friday

    Partly cloudy. High of 70F. Winds less than 5 mph.

  • Friday Night

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

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Normal Hill Weather Station, Lewiston, ID

Updated: 4:47 AM PDT

Temperature: 59.7 °F Dew Point: 34 °F Humidity: 38% Wind: Calm Pressure: 29.03 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Nick's Weather Station, Lewiston, ID

Updated: 4:47 AM PDT

Temperature: 56.5 °F Dew Point: 49 °F Humidity: 77% Wind: SW at 2.7 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Windchill: - Graphs

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

Updated: 4:47 AM PDT

Temperature: 56.4 °F Dew Point: 49 °F Humidity: 76% Wind: West at 8.0 mph Pressure: 29.79 in Hourly Precipitation: 0.01 in Windchill: - Graphs

Location: Clarkston Heights, Clarkston, WA

Updated: 4:47 AM PDT

Temperature: 55.9 °F Dew Point: 46 °F Humidity: 70% Wind: WNW at 7.3 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Lapwai-ID, Lapwai, ID

Updated: 4:40 AM PDT

Temperature: 60.6 °F Dew Point: - Humidity: 92% Wind: North at - Pressure: 28.67 in Hourly Precipitation: 0.00 in Windchill: - Graphs

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

Updated: 2:15 AM PDT

Temperature: 59 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: ITD Cottonwood ID US, Juliaetta, ID

Updated: 3:45 AM PDT

Temperature: 56 °F Dew Point: 56 °F Humidity: 100% Wind: West at 3 mph Pressure: - Hourly Precipitation: 0.09 in Windchill: - Graphs

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

Updated: 3:10 AM PDT

Temperature: 52 °F Dew Point: 45 °F Humidity: 77% Wind: SW at 22 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: ITD Shirrod Hill ID US, Genesee, ID

Updated: 3:44 AM PDT

Temperature: 51 °F Dew Point: 42 °F Humidity: 70% Wind: West at 13 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Town of Colton, Colton, WA

Updated: 4:43 AM PDT

Temperature: 49.4 °F Dew Point: 42 °F Humidity: 77% Wind: SW at 6.0 mph Pressure: 29.77 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

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

Updated: 1:47 AM HST

Temperature: 50.5 °F Dew Point: 44 °F Humidity: 77% Wind: WSW at 23.0 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Westview, Moscow, ID

Updated: 4:41 AM PDT

Temperature: 49.0 °F Dew Point: 45 °F Humidity: 87% Wind: South at 7.0 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Lamb Road, Troy, ID

Updated: 4:47 AM PDT

Temperature: 50.0 °F Dew Point: 46 °F Humidity: 87% Wind: WSW at 12.0 mph Pressure: 29.82 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: RAWS MISSION CREEK ID US, Winchester, ID

Updated: 4:03 AM PDT

Temperature: 50 °F Dew Point: 50 °F Humidity: 100% Wind: WNW at 9 mph Pressure: - Hourly Precipitation: 0.04 in Windchill: 46 °F Graphs

Location: Montgomery Ridge Road, Anatone, WA

Updated: 4:46 AM PDT

Temperature: 48.6 °F Dew Point: 38 °F Humidity: 68% Wind: SW at 10.7 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Reubens-ID, Reubens, ID

Updated: 4:40 AM PDT

Temperature: 50.0 °F Dew Point: - Humidity: 90% Wind: North at - Pressure: 26.25 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: ITD Winchester ID US,

Updated: 10:44 AM GMT

Temperature: 50 °F Dew Point: 50 °F Humidity: 99% Wind: SE at 1 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: HADS SOLDIERS MEADOW RESERVOIR AND DA ID US USBR, Winchester, ID

Updated: 3:45 AM PDT

Temperature: 52 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Spokane Washington 
440 am PDT Tuesday Sep 30 2014 


Synopsis... 
cooler temperatures will arrive today courtesy of a passing cold 
front. The front will also deliver breezy winds and scattered 
showers. Dry weather will return on Wednesday. Look for a warming 
trend and a continuation of mainly dry conditions Thursday into 
the weekend. 


&& 


Discussion... 


Today and tonight...cool, wet, and somewhat unstable trof of low 
pressure continues to make slow progress through eastern 
Washington and northern Idaho with an eventual exit into Montana 
by early Wednesday. Therefore until its exit some mention of 
showers that translates east and decreases in coverage into 
tonight coupled with the possibility of an afternoon thunderstorm 
or two up north remain in the forecast. Forecast temperatures 
remain quite close to normal given the cool trof and some 
gustiness in winds, primarily from the southwest and west, 
remains. /Pelatti 


Wednesday through Friday...this will generally be a dry weather 
period as the upper level jet retreats to our north and east. This 
transition will result from an amplifying ridge off the coast and 
vigorous trough passing through the northern half of British Columbia. The 
passage of the trough will likely deliver some showers near the British Columbia 
border and the immediate Cascade crest however model sounding in 
these areas suggest the moisture could be too shallow for anything 
of significance. 


For Thursday and Friday we will see a true sign of the changing 
seasons...the approach of a warm front and a well-defined 
atmospheric river. Model solutions are in good agreement that the 
warm front will move into the northern Cascades late Thursday and 
across the northern half of Washington and the Idaho Panhandle 
through Friday. Suspect the main impact of the frontal boundary 
will be an increase in clouds and gradually warming temperatures. 
Precipitation chances are looking less certain as the upper level 
jet is expected to remain over British Columbia with the atmospheric river 
remaining west and north of the inland northwest through at least 
Friday afternoon. High temperatures will rebound from the 60s 
today and into the upper 60s and 70s by Friday. Fx 


Friday night through Monday night: pattern looks to remain pretty 
consistent through the extended as we sit in westerly to 
northwesterly flow throughout. Models have the jet stream 
remaining to our north which would put the inland northwest on the 
warmer, more stable and less active southerly side. This in turn 
limits the chances for precipitation late this week and into early 
next with the only notable chances near the Cascade crests and the 
higher terrain northern Washington and the Idaho Panhandle. With an 
atmospheric river directed at the southern British Columbia coast for the early 
portions of the period, moisture on the southern periphery will 
influence our conditions a bit. The main impact we will see is 
increased clouds throughout the region along with the mentioned 
low end chance for mountain precipitation. Breezy winds is another 
feature showing up in the extended with the Cascade gaps and high 
ridgetops bearing the brunt of it. Currently this by no means 
looks to be a high end event, just more of a seasonal fall wind 
pattern. Finally temperatures continue the above normal trend as 
the central Pacific origins of our airmass pushes US 5-10 degrees 
above normal with widespread 70s expected for daytime highs. 
Overnight lows remain mild as increased cloud cover reduces the 
amount of radiative cooling. Overall conditions for the extended 
forecast look quite pleasant as we push further into the fall 
season. /Fliehman 


&& 


Aviation... 
12z tafs: a weak cold front moving through eastern Washington and north 
Idaho will bring moisture, instability and lift allowing for 
potential for showers and possibly an afternoon thunderstorm. 
Best chance for precipitation will be those areas favorable to 
westerly upslope flow. VFR conditions should prevail at taf 
sites. 






&& 


Preliminary point temps/pops... 
Spokane 63 40 61 39 64 45 / 30 10 0 0 0 10 
Coeur D'Alene 62 40 62 40 63 43 / 50 20 0 0 0 10 
Pullman 62 38 62 37 65 42 / 20 10 0 0 0 0 
Lewiston 68 45 68 45 71 47 / 10 10 0 0 0 0 
Colville 67 36 66 38 67 43 / 30 10 0 0 0 10 
Sandpoint 60 39 60 36 61 39 / 60 30 0 10 0 10 
Kellogg 56 37 56 40 59 43 / 60 30 10 10 0 10 
Moses Lake 71 40 69 41 68 45 / 10 0 0 0 0 0 
Wenatchee 69 46 68 45 69 49 / 0 0 0 0 0 10 
Omak 69 38 66 39 66 46 / 10 10 0 0 0 10 


&& 


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


$$ 



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