Lewiston, Idaho Weather Conditions

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Current Conditions

  • 85°
  • Clear
  • Wind: Calm
  • Humidity: 21%
  • Visibility: 10.0 miles
  • Dew Point: 41°
  • Pressure: 29.81 in. +

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Next 12 Hours

11  pm
2  am
5  am
8  am
11  am
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
82°
75°
70°
80°
94°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Clear
  • High: 107 °
  • Low: 71 °
  • Clear
  • Saturday
  • Clear
  • High: 104 °
  • Low: 70 °
  • Clear
  • Sunday
  • Clear
  • High: 102 °
  • Low: 69 °
  • Clear
  • Monday
  • Clear
  • High: 104 °
  • Low: 74 °
  • Clear
  • Tuesday
  • Clear
  • High: 103 °
  • Low: 70 °
  • Clear

Forecast for Lewiston, Idaho

Updated: 3:34 PM PDT on July 2, 2015

Heat advisory in effect until 9 PM PDT Friday...
  • Tonight

    Clear. Lows in the 60s.

  • Friday

    Very hot. Sunny. Highs 98 to 105.

  • Friday Night

    Clear. Lows in the 60s.

  • Independence Day

    Hot...sunny. Highs 95 to 101. West wind 5 to 15 mph with gusts to around 25 mph.

  • Saturday Night

    Clear. Lows in the lower to mid 60s. Northwest wind 5 to 15 mph.

  • Sunday through Thursday

    Mostly clear. Highs in the upper 80s to upper 90s. Lows in the lower 60s to lower 70s.

Severe Weather Alert Descriptions

 Heat Advisory  Statement as of 2:12 PM PDT on July 2, 2015


... Heat advisory remains in effect until 9 PM PDT Friday...

* temperatures... lows in the mid 60s. Highs 96 to 105.

* Locations... Kamiah... communities along the Snake River and
Highway 12 corridor will be in the triple digit heat. Mid to
upper 90s will impact Winchester... Craigmont... Nez Perce.

* Impacts... if you plan to be active be prepared for more hot
weather. Drink plenty of water. If you are outdoors... take
breaks from vigorous activity and rest in the shade.

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 hot temperatures is expected. Very hot temperatures can create
a situation in which heat illnesses are possible. Drink plenty of
fluids... stay in an air- conditioned room... stay out of the sun...
and check up on relatives and neighbors.






 Record Report  Statement as of 10:50 am PDT on July 1, 2015


... New June temperature records set during the June 28th and 29th
heat wave...

Note: a few sites noted below with a * broke their all time
temperature record

... New June high temperature records...

Site new record old record (date) records began
chief Joseph dam wa* 113 108 (june 23 1992) 1949
La Crosse WA 113 105 (june 23 1936) 1931
Lewiston Arpt ID 111 109 (june 22 1936) 1881
Chelan wa* 110 102 (june 22 1958) 1890
Ephrata WA 110 106 (june 30 1998) 1948
Odessa WA 110 106 (june 17 1961) 1902
Omak WA 110 103 (june 30 2008) 1931
Kamiah ID 109 104 (june 21 2005) 1979
Lind WA 109 105 (june 17 1961) 1931
Wenatchee Arpt WA 109 105 (june 23 1992) 1959
Colville WA 108 102 (june 29 2008) 1899
Hartline WA 107 103 (june 23 1992) 1927
Saint Maries ID 106 100 (june 29 1990) 1897
Bonners Ferry id* 105 98 (june 30 2008) 1907
boundary dam wa* 105 99 (june 24 1992) 1965
Pullman WA 105 98 (june 24 1992) 1940
Rosalia WA 105 102 (june 30 1924) 1893
Spokane Arpt WA 105 101 (june 23 1992) 1881
Republic WA 104 102 (june 26 1925) 1899
Mazama WA 103 98 (june 23 2004) 1948
Winthrop WA 103 (tied) 103 (june 26 1925) 1906
Coeur D'Alene ID 102 (tied) 102 (june 23 1974) 1895
Davenport WA 102 100 (june 26 1925) 1893
Sandpoint ID 102 96 (june 25 1992) 1910
Waterville WA 102 101 (june 28 1896) 1893
plain WA 101 98 (june 22 1992) 1937
Porthill ID 101 98 (june 30 2008) 1892
Conconully WA 100 (tied) 100 (june 30 1924) 1894
Nez Perce ID 100 94 (june 24 1992) 1901
Winchester ID 95 90 (june 30 2008) 1939

... New June warm low temperatures records...

Site new record old record (date) records began
Coulee Dam 1 SW WA 79 72 (june 30 1987) 1934
Lewiston Arpt ID 79 76 (june 25 1928) 1881
Lind WA 77 75 (june 30 2008) 1931
Wenatchee Arpt WA 77 75 (june 30 2008) 1959
Colville WA 76 65 (june 28 2002) 1899
Wenatchee wtr plant WA 76 72 (june 26 1992) 1931
Davenport WA 75 72 (june 21 1918) 1893
Saint Maries ID 75 68 (june 27 1990) 1897
Coeur D'Alene ID 74 66 (june 28 2006) 1895
Spokane Arpt WA 74 71 (june 30 2008) 1881
Rosalia WA 73 69 (june 29 1939) 1893
Wilbur WA 73 69 (june 27 1992) 1892
Sandpoint ID 72 67 (june 22 1955) 1910
Bonners Ferry ID 70 68 (june 24 1970) 1907
chief Joseph dam 70 (tied) 70 (june 28 1992) 1949
Republic WA 70 65 (june 23 1933) 1899
Nez Perce ID 69 64 (june 7 1977) 1901
Winchester ID 69 62 (june 27 2002) 1939
Pullman WA 67 (tied) 67 (june 23 1970) 1940
Kamiah ID 67 66 (june 13 1999) 1979
plain WA 64 (tied) 64 (june 20 1985) 1937
Holden Village WA 61 60 (june 27 2003) 1962



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Hepton Lane, Lewiston, ID

Updated: 11:11 PM PDT

Temperature: 80.6 °F Dew Point: 45 °F Humidity: 28% Wind: SE at 2.9 mph Pressure: 29.14 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Nick's Weather Station, Lewiston, ID

Updated: 11:10 PM PDT

Temperature: 82.6 °F Dew Point: 47 °F Humidity: 29% Wind: Calm Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Downtown Clarkston 8TH ST, Clarkston, WA

Updated: 11:03 PM PDT

Temperature: 81.3 °F Dew Point: 52 °F Humidity: 37% Wind: Calm Pressure: 29.67 in Hourly Precipitation: - Heat Index: 81 °F Graphs

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

Updated: 11:10 PM PDT

Temperature: 77.7 °F Dew Point: 49 °F Humidity: 36% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Clarkston Golf & Country Club, Clarkston, WA

Updated: 10:57 PM PDT

Temperature: 79.9 °F Dew Point: 50 °F Humidity: 35% Wind: ESE at 1.7 mph Pressure: 29.80 in Hourly Precipitation: - Heat Index: 79 °F Graphs

Location: Clarkston Heights-Charnita Dr., Clarkston, WA

Updated: 10:56 PM PDT

Temperature: 79.7 °F Dew Point: 50 °F Humidity: 36% Wind: Calm Pressure: 29.81 in Hourly Precipitation: - Heat Index: 79 °F Graphs

Location: Dan and Judy's, Clarkston, WA

Updated: 11:10 PM PDT

Temperature: 83.8 °F Dew Point: 44 °F Humidity: 25% Wind: West at 1.7 mph Pressure: 28.59 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Linda Vista Street, Clarkston, WA

Updated: 11:10 PM PDT

Temperature: 83.7 °F Dew Point: 51 °F Humidity: 32% Wind: North at - Pressure: 29.87 in Hourly Precipitation: - Heat Index: 82 °F Graphs

Location: Clarkston Heights Dove Drive, Clarkston, WA

Updated: 11:11 PM PDT

Temperature: 82.7 °F Dew Point: 47 °F Humidity: 29% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Owen Mounce Ranch, Lewiston, ID

Updated: 11:02 PM PDT

Temperature: 79.2 °F Dew Point: 41 °F Humidity: 26% Wind: SE at 4.0 mph Pressure: 29.61 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: MesoWest, Uniontown, WA

Updated: 8:00 PM PDT

Temperature: 84 °F Dew Point: 54 °F Humidity: 36% Wind: ESE at 2 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Town of Colton, Colton, WA

Updated: 11:09 PM PDT

Temperature: 59.5 °F Dew Point: 50 °F Humidity: 72% Wind: Calm Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Moose Draw, Troy, ID

Updated: 11:03 PM PDT

Temperature: 61.8 °F Dew Point: 53 °F Humidity: 72% Wind: Calm Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: APRSWXNET, Moscow, ID

Updated: 10:49 PM PDT

Temperature: 72 °F Dew Point: 53 °F Humidity: 51% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

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

Updated: 11:10 PM PDT

Temperature: 82.6 °F Dew Point: 45 °F Humidity: 27% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Montgomery Ridge Road, Anatone, WA

Updated: 11:07 PM PDT

Temperature: 70.6 °F Dew Point: 44 °F Humidity: 38% Wind: WSW at 6.3 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Camas Prairie, Reubens, ID

Updated: 11:11 PM PDT

Temperature: 65.7 °F Dew Point: 46 °F Humidity: 49% Wind: NW at 3.5 mph Pressure: 29.77 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: ITD,

Updated: 2:59 AM GMT

Temperature: 78 °F Dew Point: 48 °F Humidity: 34% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Spokane Washington 
1049 PM PDT Thursday Jul 2 2015 


Synopsis.... 
hot and dry weather will be featured into the Independence day 
weekend. Hottest days will likely be today and Friday with many 
valley sites topping the century mark. Breezes will be kicking up 
as weather systems move across the strong upper level ridge. 
Friday and Saturday winds are potentially looking more substantial 
as a cool front tries to sag in from Canada eventually forcing 
winds more from the north. It is still looking dry and warm even 
into the beginning of next week. 


&& 


Discussion... tonight though Saturday evening: hot and dry 
conditions will continue across the inland northwest courtesy of a 
ridge of high pressure. As of 2pm...several locations across the 
lower Columbia Basin were already recording triple digit 
temperatures and the air mass is only going to warm into Friday. 
The ridge however will begin to weaken by the evening and this 
will allow a local increase in winds and elevate the threat for 
wildfire spread. Our first concern will be near the Cascade gaps 
starting around late afternoon and evening on Friday. Confidence 
is higher that winds will materialized in Ellensburg and red flag 
warnings have been hoisted. Confidence is lower for the Wenatchee 
River Valley where model consensus is only indicating winds 8-14 
mph between 5-8pm. There is an isolated run of the higher res nmm 
that would support a low-end red flag but given the lack of 
support from MOS, will hold off on upgrade at this point and let 
the next 2 shifts examine the incoming 00z model guidance. 


As the ridge deflates Saturday, we will look for increasing northerly 
pressure gradients and eventually a dry cold front passage Saturday 
afternoon and evening. Temperatures will remain warm but do come 
down some from Friday. A bigger impact will be increasing 
northerly winds which will be squeezing through the Okanogan 
Valley and spilling into the western Columbia Basin. We should see 
gusty winds in the Okanogan Highlands as well and red flag 
warnings have been issued to address the concern for low humidity 
and winds. We will also see an increase of north winds in Stevens 
and Pend Oreille counties as well as the West Plains toward the 
Hwy 2 corridor. At this time, these winds look to be a bit weaker 
in a sustained standpoint but will have the potential to produce 
gusts 20-30 mph, especially along exposed ridge-tops. 


Temperatures during the 4th of July festivities will be quite comfortable 
but winds will raise concern for wildfire starts. Even if humidities 
climb out of critical thresholds by dark. Please be advised that 
fuels around the region are generally as dry as they are by late 
August and this will elevate the risk for wildfire ignitions 
around fireworks whether there is a red flag warning or not. /Sb 


Saturday evening through Thursday...northerly flow between the 
edge of a ridge with axis over the Gulf of Alaska with departing 
trof in northern Montana keeps some breezy conditions going 
through the evening in some locations. This northerly flow has a 
nice influence on temperatures for Sunday as they are about 10 
degrees cooler in comparison to friday's high temps, yet they are 
still above normal for this time of year given this ridge. The 
ridge axis remains off the coast for the remainder of the forecast 
which means there is potential for more weather disturbances to 
drop down along the east edge of the ridge in a northwest to 
southeast trajectory through Wednesday. The GFS and the European model (ecmwf) 
suggest the best potential for such a scenario in the Tuesday and 
Wednesday time intervals and limits the measurable precipitation 
generated in the form of showers and thunderstorms to the extreme 
northeast portion of Washington and the northeast edges of the 
north Idaho Panhandle. By Thursday models suggest the ridge is 
undercut by westerly flow and leaves eastern Washington and 
northern Idaho somewhat of a split flow with the jet stream and 
active weather associated with it well to the north and a closed 
low over central California that has nuisance mesoscale 
disturbances rotating around it well to our south. /Pelatti 


&& 


Aviation... 
06z tafs: a dry and stable airmass will remain over the aviation 
area allowing for VFR conditions at all taf sites through 06z 
Sat. Northwest winds will increase in the late afternoon across the keat 
taf site. 




&& 


Preliminary point temps/pops... 
Spokane 69 100 67 96 64 89 / 0 0 0 0 0 0 
Coeur D'Alene 63 97 63 94 61 85 / 0 0 0 0 0 0 
Pullman 58 97 58 93 56 90 / 0 0 0 0 0 0 
Lewiston 70 105 70 101 68 97 / 0 0 0 0 0 0 
Colville 63 102 62 98 59 93 / 0 0 0 0 0 0 
Sandpoint 59 96 55 93 54 85 / 0 0 0 10 10 0 
Kellogg 60 97 61 92 58 86 / 0 0 0 0 0 10 
Moses Lake 69 107 67 101 69 96 / 0 0 0 0 0 0 
Wenatchee 75 105 72 101 72 98 / 0 0 0 0 0 0 
Omak 70 104 68 98 64 96 / 0 0 0 0 0 0 


&& 


Otx watches/warnings/advisories... 
Idaho...heat advisory until 9 PM PDT Friday for Lewis and southern Nez 
Perce counties-Lewiston area. 


Washington...heat advisory until 9 PM PDT Friday for lower Garfield and 
Asotin counties-Moses Lake area-Okanogan Valley-upper 
Columbia Basin-Washington Palouse-Wenatchee area. 


Fire Weather Watch from Friday afternoon through Friday evening 
for East Washington central Cascade valleys (zone 677). 


Red flag warning from noon to 10 PM PDT Saturday for East 
Washington northern Columbia Basin (zone 673)-East 
Washington Okanogan Highlands (zone 687)-East Washington 
Okanogan/Methow valleys (zone 684). 


Red flag warning from 3 PM to 9 PM PDT Friday for East 
Washington south central Cascade valleys (zone 676). 


&& 


$$ 



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