Lewiston, Idaho Weather Conditions

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Current Conditions

  • 92°
  • Clear
  • Wind: SW 5 mph
  • Humidity: 19%
  • Visibility: 10.0 miles
  • Dew Point: 44°
  • Pressure: 29.89 in. -

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Next 12 Hours

5  pm
8  pm
11  pm
2  am
5  am
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
90°
82°
75°
66°
68°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Clear
  • High: 95 °
  • Low: 63 °
  • Clear
  • Thursday
  • Clear
  • High: 90 °
  • Low: 63 °
  • Clear
  • Friday
  • Partly Cloudy
  • High: 88 °
  • Low: 61 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 77 °
  • Low: 54 °
  • Partly Cloudy
  • Sunday
  • Clear
  • High: 75 °
  • Low: 52 °
  • Clear

Forecast for Lewiston, Idaho

Updated: 8:00 PM PDT on August 27, 2014

  • Wednesday

    Partly cloudy in the morning, then clear. High of 95F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Low of 63F. Winds less than 5 mph.

  • Thursday

    Partly cloudy in the morning, then clear. High of 90F. Winds from the West at 5 to 10 mph.

  • Thursday Night

    Clear in the evening, then overcast. Low of 63F. Winds from the South at 5 to 10 mph.

  • Friday

    Clear in the morning, then partly cloudy. High of 88F. Winds from the ENE at 5 to 15 mph shifting to the NNW in the afternoon.

  • Friday Night

    Partly cloudy. Low of 61F. Winds from the West at 5 to 15 mph.

  • Saturday

    Partly cloudy. High of 77F. Winds from the West at 10 to 15 mph.

  • Saturday Night

    Partly cloudy in the evening, then clear. Low of 54F. Winds from the WSW at 5 to 10 mph.

  • Sunday

    Partly cloudy in the morning, then clear. High of 75F. Winds from the WNW at 5 to 10 mph.

  • Sunday Night

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

  • Monday

    Clear in the morning, then partly cloudy. High of 77F. Winds less than 5 mph.

  • Monday Night

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

  • Tuesday

    Clear. High of 88F. Winds less than 5 mph.

  • Tuesday Night

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

  • Wednesday

    Clear. High of 81F. Winds from the West at 5 to 15 mph.

  • Wednesday Night

    Clear. Low of 52F. Winds from the WSW at 5 to 10 mph.

  • Thursday

    Partly cloudy. High of 79F. Winds less than 5 mph.

  • Thursday Night

    Partly cloudy. Low of 46F. Winds less than 5 mph.

  • Friday

    Partly cloudy. High of 77F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Low of 46F. Winds less than 5 mph.

  • Saturday

    Clear with a chance of a thunderstorm. High of 79F. Winds less than 5 mph. Chance of rain 20%.

  • Saturday Night

    Clear with a chance of a thunderstorm. Low of 46F. Winds less than 5 mph. Chance of rain 20%.

  • Sunday

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

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Normal Hill Weather Station, Lewiston, ID

Updated: 6:10 PM PDT

Temperature: 88.7 °F Dew Point: 20 °F Humidity: 8% Wind: Calm Pressure: 29.03 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Nick's Weather Station, Lewiston, ID

Updated: 6:11 PM PDT

Temperature: 91.8 °F Dew Point: 50 °F Humidity: 24% Wind: SSE at 4.7 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

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

Updated: 6:10 PM PDT

Temperature: 93.1 °F Dew Point: 51 °F Humidity: 24% Wind: Calm Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Clarkston Heights, Clarkston, WA

Updated: 6:11 PM PDT

Temperature: 102.7 °F Dew Point: 57 °F Humidity: 23% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 103 °F Graphs

Location: Lapwai-ID, Lapwai, ID

Updated: 5:50 PM PDT

Temperature: 100.0 °F Dew Point: - Humidity: 17% Wind: North at - Pressure: 28.80 in Hourly Precipitation: 0.00 in Heat Index: 96 °F Graphs

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

Updated: 5:15 PM PDT

Temperature: 100 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 94 °F Graphs

Location: ITD Cottonwood ID US, Juliaetta, ID

Updated: 5:14 PM PDT

Temperature: 96 °F Dew Point: 43 °F Humidity: 16% Wind: West at 1 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 92 °F Graphs

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

Updated: 4:10 PM PDT

Temperature: 87 °F Dew Point: 52 °F Humidity: 30% Wind: West at 13 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: ITD Shirrod Hill ID US, Genesee, ID

Updated: 5:14 PM PDT

Temperature: 86 °F Dew Point: 43 °F Humidity: 21% Wind: West at 4 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Town of Colton, Colton, WA

Updated: 6:09 PM PDT

Temperature: 87.0 °F Dew Point: 46 °F Humidity: 24% Wind: Calm Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

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

Updated: 3:11 PM HST

Temperature: 86.6 °F Dew Point: 50 °F Humidity: 28% Wind: WNW at 5.0 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: East Gate Park, Moscow, ID

Updated: 5:57 PM PDT

Temperature: 86.0 °F Dew Point: - Humidity: - Wind: North at - Pressure: - Hourly Precipitation: - Heat Index: - Graphs

Location: Westview, Moscow, ID

Updated: 6:05 PM PDT

Temperature: 86.4 °F Dew Point: 47 °F Humidity: 25% Wind: SW at 5.0 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Lamb Road, Troy, ID

Updated: 6:10 PM PDT

Temperature: 84.9 °F Dew Point: 46 °F Humidity: 26% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: RAWS MISSION CREEK ID US, Winchester, ID

Updated: 5:03 PM PDT

Temperature: 85 °F Dew Point: 42 °F Humidity: 22% Wind: NW at 9 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Montgomery Ridge Road, Anatone, WA

Updated: 6:07 PM PDT

Temperature: 83.3 °F Dew Point: 44 °F Humidity: 26% Wind: North at 3.6 mph Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Reubens-ID, Reubens, ID

Updated: 5:40 PM PDT

Temperature: 83.5 °F Dew Point: - Humidity: 23% Wind: North at - Pressure: 26.45 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Camas Prairie, Reubens, ID

Updated: 6:11 PM PDT

Temperature: 83.8 °F Dew Point: 47 °F Humidity: 28% Wind: NW at 1.2 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: ITD Winchester ID US,

Updated: 12:15 AM GMT

Temperature: 79 °F Dew Point: 46 °F Humidity: 31% Wind: North at 5 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Spokane Washington 
443 PM PDT Wednesday Aug 27 2014 


Synopsis... 
dry and warm conditions are expected through the workweek. The 
next storm system will arrive during the upcoming Holiday weekend. 
This will result in breezy to windy conditions along with an 
increased chance for showers along with temperatures dropping 
below normal. 


&& 


Discussion... 


Tonight through tomorrow..ridge of high pressure continues to 
flatten out through this interval and allows a cooling trend most 
apparent in maximum temperatures for tomorrow to start. Small and 
generally weak disturbances coupled with very limited sources of 
moisture to utilize results in a mostly dry forecast with a bit 
more cloud cover and increased winds this evening in the gaps of 
the Cascades and again tomorrow, with minor mention of showers 
noted in close proximity of the British Columbia border. /Pelatti 


Thursday night through Sunday...upper level ridge is expected to 
depart during this period care of two distinct upper level 
disturbances. The first will be a rapid mover on Thursday and 
Thursday evening. This system is looking a little more robust than 
previous model runs...in that its a little stronger and deeper. 
Now most models have it slicing through the southern half of 
Washington and onto the Camas Prairie by Thursday evening. Despite 
its stronger and deeper trends...it still is not expected to 
contain much moisture. In fact...the only area with sufficient 
moisture for precipitation will be over extreme NE Washington and 
the northern tip of the Idaho Panhandle. Instability per MUCAPES 
ranges from 200-500 j/kg in this area...however there is some weak 
inhibition to overcome so precipitation is not a sure 
bet...especially with the disturbance moving well southeast of 
this location. Model soundings could support showers...but the 
chances of thunderstorms look quite small. Any threat of 
precipitation should taper off rapidly overnight and into early 
Friday. 


By Friday...the longwave pattern begins to buckle with the ridge 
shifting into Alberta and a deep trough setting up off the coast. 
This will begin to deepen the moisture over the region ahead of a 
well-defined cold front. The front is expected to move into the 
Cascades by late afternoon and across the remainder of the inland 
northwest overnight. The moisture associated with the front does not 
appear impressive, in fact it begins to shear apart as it moves 
into Idaho by early Saturday morning. The moisture is expected to 
remain most coherent near the Canadian border and this is where we 
will leave the best chances of precipitation. 


Much drier and cooler air will move into the area on Saturday. 
Temperatures should cool anywhere from 8-13 degrees on 
Saturday...while winds will pick up into the 10 to 20 mph range 
with gusts to 25 mph. The intrusion of drier air will generally 
preclude any chance of Post-frontal precipitation with the 
exception of along the Cascade crest and near the Canadian border. 
Model soundings are backing off on the potential instability and 
suggest we might not see enough for thunder. The best threat is 
expected to remain north of the international border...however we 
will leave in the forecast for now for consistency sake. 


On Sunday the core of the upper level trough begins to shift into 
Montana with cool northwest flow overtaking most of the region. 
The atmosphere will generally remain quite dry. Precipitatable 
water values will drop under half an inch...while the chances for 
precipitation will remain small. Atmospheric stability will 
increase as upper level temperatures (500 mb) climb anywhere from 
3-5c outpacing the subtle warming below. If showers were to form, 
they would be quite shallow and once again confined to locations 
near the Canadian border. Surface temperatures on Saturday and 
Sunday will remain cool for this time of year with highs in the 
mid 60s and 70s...or roughly whats expected for the third week of 
September. Fx 


Sunday night through wednesday: the models are in good agreement 
for the this period through Tuesday night. A weak ridge pattern 
will develop in the region and keep the Columbia Basin free of 
precipitation. Some weak instability along the Canadian border 
could produce an isolated rain shower in the mountain areas of 
northern Washington and the Idaho Panhandle. An occasional 
lighting strike with these showers is possible in the Idaho 
Panhandle. Tuesday is expected quieter than Monday as the chance 
for precipitation continues to diminish across the region. The 
models begin to differ on the timing of the trough expected to 
impact the region on Wednesday. The European model (ecmwf) is bringing it in late 
Wednesday morning and keeping it in the northern mountains of 
Washington. The GFS is bringing it through late Wednesday and with 
less moisture than the European model (ecmwf). Temperatures for this period are 
expected to be around 4 to 5 degrees above the season normals. 
/Jdc 


&& 


Aviation... 
00z tafs: weak high pressure will keep VFR conditions over the 
aviation area through 00z Friday. A pair of weak disturbances will 
result in locally gusty winds this evening...and again Thursday 
afternoon. Jw 


&& 


Preliminary point temps/pops... 
Spokane 60 82 58 81 55 72 / 0 0 0 0 0 10 
Coeur D'Alene 56 82 55 81 54 71 / 0 0 0 0 0 10 
Pullman 54 82 51 82 50 71 / 0 0 0 0 0 10 
Lewiston 64 89 61 89 60 77 / 0 0 0 0 0 10 
Colville 57 87 53 82 50 73 / 0 0 10 0 10 30 
Sandpoint 52 82 52 79 51 70 / 0 0 10 10 10 30 
Kellogg 57 80 55 78 52 67 / 0 0 0 0 0 20 
Moses Lake 59 89 56 85 52 76 / 0 0 0 0 0 0 
Wenatchee 64 87 62 83 58 74 / 0 0 0 0 0 10 
Omak 57 86 60 83 56 75 / 0 0 0 0 0 10 


&& 


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


$$ 








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