Lewiston, Idaho Weather Conditions

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Current Conditions

  • 79°
  • Scattered Clouds
  • Wind: North 6 mph
  • Humidity: 36%
  • Visibility: 10.0 miles
  • Dew Point: 50°
  • Pressure: 29.86 in. -

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Next 12 Hours

5  pm
8  pm
11  pm
2  am
5  am
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
84°
73°
72°
68°
66°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Partly Cloudy
  • High: 88 °
  • Low: 63 °
  • Partly Cloudy
  • Tuesday
  • Chance of Rain
  • High: 84 °
  • Low: 63 °
  • Chance of Rain
  • Wednesday
  • Partly Cloudy
  • High: 90 °
  • Low: 57 °
  • Partly Cloudy
  • Thursday
  • Chance of Rain
  • High: 82 °
  • Low: 54 °
  • Chance of Rain
  • Friday
  • Partly Cloudy
  • High: 77 °
  • Low: 55 °
  • Partly Cloudy

Forecast for Lewiston, Idaho

Updated: 2:00 PM PDT on September 22, 2014

  • Monday

    Partly cloudy. High of 88F. Winds from the NW at 5 to 10 mph.

  • Monday Night

    Partly cloudy with a chance of rain. Low of 63F. Winds less than 5 mph. Chance of rain 20%.

  • Tuesday

    Partly cloudy with a chance of rain. High of 84F. Winds from the NNE at 5 to 10 mph shifting to the WNW in the afternoon. Chance of rain 20%.

  • Tuesday Night

    Partly cloudy. Low of 63F. Winds from the WSW at 5 to 10 mph shifting to the South after midnight.

  • Wednesday

    Partly cloudy. High of 90F. Winds from the SSW at 5 to 10 mph.

  • Wednesday Night

    Mostly cloudy in the evening, then clear. Low of 57F. Winds less than 5 mph.

  • Thursday

    Clear with a chance of rain in the afternoon. High of 82F. Winds less than 5 mph. Chance of rain 20%.

  • Thursday Night

    Mostly cloudy with a chance of rain. Low of 54F. Winds less than 5 mph. Chance of rain 30%.

  • Friday

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

  • Friday Night

    Partly cloudy. Low of 55F. Winds less than 5 mph.

  • Saturday

    Clear. High of 75F. Winds from the NW at 5 to 10 mph.

  • Saturday Night

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

  • Sunday

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

  • Sunday Night

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

  • Monday

    Partly cloudy. High of 77F. Winds from the SW at 5 to 10 mph.

  • Monday Night

    Mostly cloudy with a chance of rain. Low of 52F. Winds less than 5 mph. Chance of rain 50%.

  • Tuesday

    Partly cloudy with a chance of a thunderstorm. High of 72F. Winds less than 5 mph. Chance of rain 20%.

  • Tuesday Night

    Partly cloudy. Low of 50F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 73F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Low of 50F. Winds less than 5 mph.

  • Thursday

    Clear. High of 73F. Winds less than 5 mph.

  • Thursday Night

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

  • Friday

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

Severe Weather Alert Descriptions

 Air Quality Alert  Statement as of 9:57 am PDT on September 22, 2014


An air quality alert has been issued by the Idaho department of
environmental quality in Lewiston through at least Tuesday
morning. These restrictions are in effect through 10 am on
Tuesday. Conditions will be reassessed at that time.

Wildfire smoke from the Johnson Bar fire continues to impact
communities on the Nez Perce reservation. Therefore, the air
quality advisory will remain in effect. Wildfire smoke may
continue to move in and out of the area throughout the day and
overnight. Some areas may be more impacted than others, so please
take appropriate precautions.

No EPA/npt burn permits will be approved. This action does not
apply to camping and recreational fires or fires set for cultural
or traditional purposes. (Farr general rule for open burning,
section 49.131).

Those individuals who are sensitive to increased particulate or
smoke levels are encouraged to limit prolonged or strenuous
outdoor activity. An increase in symptoms of asthma and other
respiratory ailments are likely. Your cooperation is appreciated.

This statement is issued by the deq air quality analyst... air
quality division... Lewiston Idaho. Contact at 208 799 4370.

For more information on Idaho air quality visit... /use all lower
case/... http://www.Deq.Idaho.Gov/



957 am PDT Mon Sep 22 2014

An air quality alert has been issued by the Idaho department of
environmental quality in Lewiston through at least Tuesday
morning. These restrictions are in effect through 10 am on
Tuesday. Conditions will be reassessed at that time.

Wildfire smoke from the Johnson Bar fire continues to impact
communities on the Nez Perce reservation. Therefore, the air
quality advisory will remain in effect. Wildfire smoke may
continue to move in and out of the area throughout the day and
overnight. Some areas may be more impacted than others, so please
take appropriate precautions.

No EPA/npt burn permits will be approved. This action does not
apply to camping and recreational fires or fires set for cultural
or traditional purposes. (Farr general rule for open burning,
section 49.131).

Those individuals who are sensitive to increased particulate or
smoke levels are encouraged to limit prolonged or strenuous
outdoor activity. An increase in symptoms of asthma and other
respiratory ailments are likely. Your cooperation is appreciated.

This statement is issued by the deq air quality analyst... air
quality division... Lewiston Idaho. Contact at 208 799 4370.

For more information on Idaho air quality visit... /use all lower
case/... http://www.Deq.Idaho.Gov/



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Normal Hill Weather Station, Lewiston, ID

Updated: 5:16 PM PDT

Temperature: 77.9 °F Dew Point: 23 °F Humidity: 13% Wind: Calm Pressure: 29.00 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Nick's Weather Station, Lewiston, ID

Updated: 5:16 PM PDT

Temperature: 79.9 °F Dew Point: 55 °F Humidity: 43% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

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

Updated: 5:16 PM PDT

Temperature: 79.8 °F Dew Point: 53 °F Humidity: 40% Wind: Calm Pressure: 29.77 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Clarkston Heights, Clarkston, WA

Updated: 5:16 PM PDT

Temperature: 78.6 °F Dew Point: 52 °F Humidity: 40% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Lapwai-ID, Lapwai, ID

Updated: 5:10 PM PDT

Temperature: 87.1 °F Dew Point: - Humidity: 38% Wind: North at - Pressure: 28.76 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

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

Updated: 2:15 PM PDT

Temperature: 86 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: ITD Cottonwood ID US, Juliaetta, ID

Updated: 4:15 PM PDT

Temperature: 83 °F Dew Point: 50 °F Humidity: 32% Wind: NW at 1 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: ITD Shirrod Hill ID US, Genesee, ID

Updated: 4:15 PM PDT

Temperature: 76 °F Dew Point: 46 °F Humidity: 34% Wind: SSE at 6 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Town of Colton, Colton, WA

Updated: 5:13 PM PDT

Temperature: 75.1 °F Dew Point: 48 °F Humidity: 39% Wind: Calm Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

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

Updated: 2:16 PM HST

Temperature: 77.9 °F Dew Point: 50 °F Humidity: 37% Wind: WNW at 3.0 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Westview, Moscow, ID

Updated: 5:10 PM PDT

Temperature: 78.3 °F Dew Point: 48 °F Humidity: 34% Wind: WSW at 4.0 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Lamb Road, Troy, ID

Updated: 5:12 PM PDT

Temperature: 76.7 °F Dew Point: 49 °F Humidity: 38% Wind: Calm Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: RAWS MISSION CREEK ID US, Winchester, ID

Updated: 4:03 PM PDT

Temperature: 72 °F Dew Point: 49 °F Humidity: 45% Wind: ENE at 4 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Montgomery Ridge Road, Anatone, WA

Updated: 5:15 PM PDT

Temperature: 75.2 °F Dew Point: 49 °F Humidity: 40% Wind: North at 1.8 mph Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Reubens-ID, Reubens, ID

Updated: 5:10 PM PDT

Temperature: 73.2 °F Dew Point: - Humidity: 43% Wind: North at - Pressure: 26.39 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Camas Prairie, Reubens, ID

Updated: 5:16 PM PDT

Temperature: 71.8 °F Dew Point: 50 °F Humidity: 46% Wind: West at 5.0 mph Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: ITD Winchester ID US,

Updated: 11:14 PM GMT

Temperature: 73 °F Dew Point: 56 °F Humidity: 54% Wind: NE at 1 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 
442 PM PDT Monday Sep 22 2014 


Synopsis... 
warm temperatures are expected again on Tuesday, but fall type 
weather is on the way for the end of the week. A slow moving cold 
front will bring good chances for rain to central Washington on 
Wednesday and Thursday. Cooler temperatures will also accompany 
the cold front Thursday and Friday. A slight warming and drying 
trend is expected to occur next weekend. 




&& 


Discussion... 
tonight and Tuesday...satellite imagery shows several waves coming 
around an upper level trough in the Gulf of Alaska that will 
impact the region this week. The first one is the weakest as it 
moves into an upper ridge. This wave this afternoon is over 
southern British Columbia and earlier brought isolated 
thunderstorms over the east slopes of the Cascades. However early 
in the afternoon this convection weakened with mainly virga or 
light showers falling as of 2 PM from Ritzville to Omak. This 
trend should continue into this evening. 


Next wave of concern is a bit stronger and approaching the south 
Oregon coast. Increased lift with this wave and surface based cape 
values of 300-500 j/kg over NE Oregon has led to some cells 
popping up on radar and a few of these may develop over the 
Washington Blue Mountains early this evening. The brunt of the 
lift with the wave however will pass through overnight into 
Tuesday morning. Model qpf varies quite a bit due to varying 
degrees of mid level instability with the NAM and GFS solutions 
generating quite a bit of elevated convection. The GFS focuses the 
Blue Mountains, Palouse, Lewiston area, and central Panhandle 
mountains while the NAM focuses further west from Ritzville to 
Spokane to Sandpoint. With the European model (ecmwf) also favoring an axis of 
convection similar to the GFS...will favor this solution although 
thunder can not be completely ruled out over northeast Washington 
into the northern Panhandle. 


After this wave passes...attention turns to the Cascades and 
northern mountains Tuesday afternoon. Isentropic lift will be on 
the increase with an approaching warm front. Light rain or showers 
may develop...and over the Idaho Panhandle isolated thunderstorms 
are possible with uncapped cape around 200-400 j/kg. Whether or 
storms develop or not will depend on the amount of sun breaks in 
the late morning/early afternoon hours. Jw 


Tuesday night through friday: the morning model runs are in decent 
agreement for the Wednesday through Friday time frame. The 12z GFS 
and 12z European model (ecmwf) show a large upper level trough moving into western 
and central Washington Wednesday, getting hung up Wednesday night 
just east of the Cascades, then limping eastward Thursday and 
Thursday night. If this scenario verifies, portions of central and 
north central Washington will receive soaking rains Wednesday and 
Thursday. The north Idaho Panhandle and the eastern third of 
Washington would probably receive rain of a more spotty nature 
Thursday and Friday as the front undergoes a great deal of 
shearing and stretching. The GFS and European model (ecmwf) dig the slow moving 
upper trough deeply into the Desert Southwest by Friday 
leaving places like Spokane, Kellogg, and Sandpoint mainly dry 
until potentially Saturday. Since the shortwave disturbances that 
will be diving into the trough Thursday and Friday are coming off 
the Asian coast today, expect to see some model variability. These 
disturbances will be over a relatively data sparse region for a 
day or two. Even though the 12z GFS and European model (ecmwf) are in reasonable 
agreement, forecast confidence is below average for the second 
half of the week. However, confidence is high that our much warmer 
than average weather will come to an end Thursday and Friday. 
Summer will take a serious hit by this incoming trough. /Gkoch 


Saturday through monday: we start the period under a trof of low 
pressure. This feature begins to migrate east as a second wave 
comes off the Pacific. Eventually, the second trof of low pressure 
moves over the inland northwest. The presence of the pair of troughs is 
well agreed amongst the medium range models...however how fast 
this transition occurs carries high uncertainty. What looked to be 
a 48 hour break between the features has shrunk with model trends 
this morning showing signs of phasing these features. So what does 
this mean? A forecast leaning toward the GFS, which maintains two 
distinct features, indicates moisture and light pcpn to mainly 
skirt the Idaho Panhandle and far eastern reaches of Washington Saturday 
giving way to dry conditions region-wide Sunday under shortwave 
ridging. The second wave and associated cold front bringing the 
next chance for light showers would arrive Monday. On the other 
end of the spectrum, the European model (ecmwf) which now phases the two waves, 
favors unsettled weather over the entire region through a majority 
of the weekend. The only exception would be the deep basin due to 
localized downsloping off the Cascades. A closer examination of 
ensemble means and run to run consistency suggest the GFS is 
trending toward a weaker "in between" ridge but still illustrating 
somewhat of a small break. I think the models will meet somewhere 
in the middle over the next few days and opted not to make 
wholesale changes yet...thus a mostly dry forecast is in place for 
Sunday. Even following the European model (ecmwf) solution, central Washington is under the 
western periphery of the longwave trof, influenced by a northerly 
jet and this does not Bode well for precipitation. Some agreement 
by Monday comes with all guidance trending toward a more 
progressive flow with the incoming wave. This would strengthen 
westerly flow and continue to bring a rain shadow in the Lee of 
the Cascades. Temperatures have been lowered slightly and remain 
on the warmer end of guidance but could be a handful of degrees 
lower if the forecast trends toward a pure European model (ecmwf) solution in the 
coming days. /Sb 


&& 


Aviation... 
00z tafs: a couple weather disturbances pass through the inland northwest 
over the next 24 hours. Isolated -shra will be a risk early this 
evening, through 02-03z, with a few -tsra possible near puw/lws in 
the afternoon heating. The 1st weather disturbance with a broader 
shower threat comes in between late evening and Tuesday morning, 
with scattered showers possible at all taf sites. A brief lull is 
expected in the mid to late morning, before the second disturbance 
approaches in the afternoon and keeps the threat of showers alive. 
VFR conditions are projected, but LCL MVFR conditions possible in 
any heavier showers. /J. Cote' 






&& 


Preliminary point temps/pops... 
Spokane 60 76 58 75 52 72 / 40 30 10 30 20 20 
Coeur D'Alene 58 77 56 78 50 73 / 30 30 10 20 20 20 
Pullman 57 79 54 78 50 73 / 40 20 10 10 10 20 
Lewiston 63 85 59 84 56 79 / 50 20 10 10 10 20 
Colville 57 76 55 74 49 75 / 30 30 20 60 40 50 
Sandpoint 54 72 52 74 48 73 / 20 40 20 20 20 20 
Kellogg 56 75 54 79 49 75 / 20 30 10 10 10 20 
Moses Lake 61 80 57 75 53 74 / 20 20 10 50 40 50 
Wenatchee 62 76 60 72 56 72 / 10 20 30 50 40 50 
Omak 58 75 58 74 53 73 / 20 30 30 60 40 50 


&& 


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


$$ 








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