Lower Granite Lake

Also Known As: Granite Lake, Lower Granite Reservoir, Seminacum Lake, and William Clark Lake.



Artificially impounded body of water.
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GPS Coordinates

Latitude, Longitude:
46.6604369°, -117.4279602°
Elevation Icon


738 ft. (225 m.)

Topographic Map

US Topo Map

The USGS (U.S. Geological Survey) publishes a set of the most commonly used topographic maps of the U.S. called US Topo that are separated into rectangular quadrants that are printed at 22.75"x29" or larger. Lower Granite Lake is covered by the Almota, WA US Topo Map quadrant

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Land Icon Land
Man-made Icon Man-made

Nearby Cities

Albion, WA 12 mi
Pullman, WA 13 mi
Pomeroy, WA 15 mi
Colfax, WA 15 mi
Colton, WA 16 mi

Nearby Points of Interest

Lower Granite Lake Dam Man-made 0.0 mi
Log Cabin Island Land 0.2 mi
Davis Bar Land 0.6 mi
Offield Canyon Land 0.7 mi
Offield Landing Man-made 0.8 mi

Historical Weather

Below are weather averages from 1971 to 2000 according to data gathered from the nearest official weather station. The nearest weather station for both precipitation and temperature measurements is PULLMAN 2 NW which is approximately 13 miles away and has an elevation of 2,545 feet (1,807 feet higher than Lower Granite Lake). Because the nearest station and this geographic feature may have differences in elevation and topography, the historic weather at the two separate locations may be different as well.

Average Daily Temperatures by Month (°F)

Average Monthly Precipitation (in inches)

Month Precip AVG High Temp AVG Low Temp
January 2.46" 35.3° 23.8°
February 2.10" 40.8° 27.2°
March 2.01" 48.3° 31.5°
April 1.72" 56.5° 35.9°
May 1.77" 64.7° 41.6°
June 1.30" 71.8° 46.5°
July .79" 81.6° 50.1°
August .89" 83.2° 50.3°
September .88" 73.5° 43.9°
October 1.48" 60.4° 36.5°
November 2.83" 43.3° 30.3°
December 2.78" 35.5° 24.2°

Summer High Temps

This location's average summer high temps are lower than 70% of other locations on record.

Winter Low Temps

This location's average winter low temps are higher than 63% of other locations on record.

Precipitation Levels

This location's average precipitation levels are lower than 73% of other locations on record.