Lewiston, Idaho Weather Conditions

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Current Conditions

  • 90°
  • Clear
  • Wind: East 4 mph
  • Humidity: 17%
  • Visibility: 10.0 miles
  • Dew Point: 39°
  • Pressure: 29.95 in. +

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Next 12 Hours

8  pm
11  pm
2  am
5  am
8  am
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
91°
79°
72°
77°
86°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Partly Cloudy
  • High: 102 °
  • Low: 68 °
  • Partly Cloudy
  • Tuesday
  • Clear
  • High: 106 °
  • Low: 72 °
  • Clear
  • Wednesday
  • Chance of a Thunderstorm
  • High: 97 °
  • Low: 64 °
  • Chance of a Thunderstorm
  • Thursday
  • Partly Cloudy
  • High: 97 °
  • Low: 68 °
  • Partly Cloudy
  • Friday
  • Partly Cloudy
  • High: 100 °
  • Low: 66 °
  • Partly Cloudy

Forecast for Lewiston, Idaho

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

Heat advisory in effect from 1 PM Monday to 8 PM PDT Tuesday...
  • Sunday

    Partly cloudy in the morning, then clear. High of 99F. Winds less than 5 mph.

  • Sunday Night

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

  • Monday

    Partly cloudy in the morning, then clear. High of 102F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 68F. Winds less than 5 mph.

  • Tuesday

    Clear. High of 106F. Winds from the WSW at 5 to 10 mph shifting to the North in the afternoon.

  • Tuesday Night

    Clear in the evening, then partly cloudy. Low of 72F. Winds less than 5 mph.

  • Wednesday

    Clear with a chance of a thunderstorm and a chance of rain. High of 97F. Winds from the WNW at 5 to 10 mph. Chance of rain 20%.

  • Wednesday Night

    Clear in the evening, then partly cloudy. Low of 64F. Winds less than 5 mph.

  • Thursday

    Clear. High of 97F. Winds less than 5 mph.

  • Thursday Night

    Partly cloudy. Low of 68F. Winds less than 5 mph.

  • Friday

    Partly cloudy. High of 100F. Winds from the NW at 5 to 10 mph.

  • Friday Night

    Clear with a chance of a thunderstorm. Low of 66F. Winds less than 5 mph. Chance of rain 20%.

  • Saturday

    Clear. High of 100F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 68F. Winds less than 5 mph.

  • Sunday

    Clear. High of 93F. Winds less than 5 mph.

  • Sunday Night

    Clear with a chance of a thunderstorm. Low of 70F. Winds less than 5 mph. Chance of rain 20%.

  • Monday

    Partly cloudy with a chance of a thunderstorm. High of 95F. Winds less than 5 mph. Chance of rain 20%.

  • Monday Night

    Partly cloudy with a chance of a thunderstorm. Low of 61F. Winds less than 5 mph. Chance of rain 20%.

  • Tuesday

    Clear with a chance of a thunderstorm. High of 91F. Winds less than 5 mph. Chance of rain 20%.

  • Tuesday Night

    Clear with a chance of a thunderstorm. Low of 59F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday

    Clear. High of 90F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Low of 57F. Winds less than 5 mph.

  • Thursday

    Clear. High of 84F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Heat Advisory  Statement as of 2:33 PM PDT on July 27, 2014


... Heat advisory in effect from 1 PM Monday to 8 PM PDT Tuesday...

The National Weather Service in Spokane has issued a heat
advisory... which is in effect from 1 PM Monday to 8 PM PDT
Tuesday.

* Temperatures... highs 100 to 105. Lows in the mid 60s to around
70.

* Timing... temperatures will be warmest between 1 PM and 8 PM.

* Locations... Coulee Dam... Ephrata... Moses Lake... Ritzville... La
Crosse... Clarkston... Lewiston...

* impacts... hot temperatures will have the potential to create
heat related illnesses. People who are unable to care for
themselves will be at most risk... including Young children and
the elderly. Limit outdoor activities during the afternoon when
temperatures will be warmest. Seek shaded areas often to cool
off and consume plenty of water to keep hydrated.

Precautionary/preparedness actions...

Take extra precautions if you work or spend time outside. When
possible... reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency... call 911. A heat advisory means that a period
of very hot temperatures is expected. Drink plenty of
fluids... stay in an air-conditioned room... stay out of the
sun... and check up on relatives and neighbors.





Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Normal Hill Weather Station, Lewiston, ID

Updated: 9:11 PM PDT

Temperature: 88.3 °F Dew Point: 20 °F Humidity: 8% Wind: Calm Pressure: 29.09 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

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

Updated: 9:11 PM PDT

Temperature: 85.6 °F Dew Point: 46 °F Humidity: 25% Wind: SE at 6.0 mph Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Clarkston Heights, Clarkston, WA

Updated: 9:11 PM PDT

Temperature: 85.6 °F Dew Point: 42 °F Humidity: 22% Wind: WNW at 4.4 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

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

Updated: 8:15 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: 8:00 PM PDT

Temperature: 91 °F Dew Point: 42 °F Humidity: 18% Wind: North at 3 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

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

Updated: 7:10 PM PDT

Temperature: 87 °F Dew Point: 46 °F Humidity: 24% Wind: NNW at 6 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: ITD Shirrod Hill ID US, Genesee, ID

Updated: 8:00 PM PDT

Temperature: 81 °F Dew Point: 40 °F Humidity: 23% Wind: North at 4 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Town of Colton, Colton, WA

Updated: 9:10 PM PDT

Temperature: 64.2 °F Dew Point: 47 °F Humidity: 54% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

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

Updated: 6:11 PM HST

Temperature: 83.4 °F Dew Point: 46 °F Humidity: 27% Wind: ENE at 7.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Westview, Moscow, ID

Updated: 9:01 PM PDT

Temperature: 77.8 °F Dew Point: 45 °F Humidity: 31% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Lamb Road, Troy, ID

Updated: 9:09 PM PDT

Temperature: 76.3 °F Dew Point: 48 °F Humidity: 37% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: RAWS MISSION CREEK ID US, Winchester, ID

Updated: 8:03 PM PDT

Temperature: 84 °F Dew Point: 36 °F Humidity: 18% Wind: NE at 7 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Montgomery Ridge Road, Anatone, WA

Updated: 9:10 PM PDT

Temperature: 77.8 °F Dew Point: 39 °F Humidity: 25% Wind: NW at 2.5 mph Pressure: 30.12 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Camas Prairie, Reubens, ID

Updated: 9:11 PM PDT

Temperature: 79.0 °F Dew Point: 47 °F Humidity: 32% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: ITD Winchester ID US,

Updated: 2:59 AM GMT

Temperature: 81 °F Dew Point: 45 °F Humidity: 28% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

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

Updated: 7:45 PM PDT

Temperature: 91 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Spokane Washington 
430 PM PDT sun Jul 27 2014 


Synopsis... 
hot temperatures and dry weather will continue through midweek. 
Thunderstorms chances will increase during the latter portion of 
the work week as monsoonal moisture overspreads the inland 
northwest. 


&& 


Discussion... 
tonight through tuesday: the upper level ridge has pumped up 
across the region today. Hope you enjoyed the pleasant 
temperatures the last few days because it is going to get really 
hot on Monday and Tuesday. A weather disturbance is moving up from 
western Oregon this afternoon. The main impact will be an increase 
in cloud cover. Have increased cloud cover, especially this 
evening across the area. There is very little moisture below 10k 
ft and no instability with this feature so am not anticipating any 
showers or thunderstorms. The wave will move out of the Idaho 
Panhandle Monday morning with mostly sunny skies expected through 
the day. With no marine layer on the west side to deal with, winds 
will be light. Have decided to issue a heat advisory for the 
Columbia Basin, Washington Palouse, lower elevations of Garfield 
and Asotin counties and the Lewiston area. They will see 
temperatures around 103 or higher Monday and Tuesday with 
overnight lows above 65. /Nisbet 


Tuesday night through thursday: the ridge will be in full force 
during the mid-week time frame (and beyond), with mostly dry and 
hot temperatures to continue. However, a weak wave moving 
northeast may have some impacts over far southeast Washington and 
the Idaho Panhandle Wednesday/Wednesday night. This is agreed 
upon by most models, which has been the most consistent solution 
for the past few days. However, one model (nam) is bringing 
moisture further west and also developing showers and 
thunderstorms further west. And given what will have been several 
days of hot/dry, the thunderstorms would be on the drier side. 
This would obviously have implications on ongoing wildfire- 
fighting efforts. This forecast continued with the more 
consistent solution and kept the west dry. Isolated chances for 
thunderstorms were maintained for far southeast Washington into 
the Idaho Panhandle however. Another very weak disturbance may be 
able to trigger isolated thunderstorms once again Thursday 
afternoon over the east. 


Friday through Sunday night: perhaps a more significant wave will 
traverse the inland northwest on Friday and Saturday. This has 
been advertised for the past few days, and while it doesn't look 
too impressive, it should be able to kick off a bit more 
widespread thunderstorms. By that I mean thunderstorms will have a 
better chance developing further west, not just over the east. 
The thunderstorms would likely be wetter (precipitable water 
values over an inch) than earlier in the week, which would 
hopefully translate into few, if any, new fire starts. 


Temperatures will remain hot each afternoon, mainly in the 90s 
with several areas reaching/exceeding 100 degrees. TY 


&& 


Aviation... 
00z tafs: some high and mid level clouds were moving over the 
region at 00z. This should continue overnight and then clear some 
by 28/12z. Winds will remain light with some diurnal variation. Jl 


&& 


Preliminary point temps/pops... 
Spokane 67 97 67 99 69 98 / 0 0 0 0 0 10 
Coeur D'Alene 62 94 61 97 64 96 / 0 0 0 0 0 10 
Pullman 58 97 57 97 61 93 / 0 0 0 0 10 20 
Lewiston 69 103 69 103 72 101 / 0 0 0 0 10 20 
Colville 57 98 57 100 60 100 / 0 0 0 0 0 10 
Sandpoint 54 92 54 94 57 92 / 0 0 0 0 0 10 
Kellogg 60 92 61 93 62 91 / 0 10 0 0 0 20 
Moses Lake 64 102 64 103 67 101 / 0 0 0 0 0 10 
Wenatchee 71 102 71 102 71 101 / 0 0 0 0 0 10 
Omak 64 101 65 103 66 102 / 0 0 0 0 0 10 


&& 


Otx watches/warnings/advisories... 
Idaho...heat advisory from 1 PM Monday to 8 PM PDT Tuesday for Lewiston 
area. 


Washington...heat advisory from 1 PM Monday to 8 PM PDT Tuesday for lower 
Garfield and Asotin counties-Moses Lake area-upper Columbia 
Basin-Washington Palouse. 


&& 



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