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. Williamson Valley is covered by the Mount Johnson, CA US Topo Map quadrant
Free US Topo Map PDF Order Waterproof Printed Topo MapParks Valley | 1.6 mi |
Gloria Valley | 2.4 mi |
Ben Graves Canyon | 4.2 mi |
Rooster Canyon | 4.3 mi |
Shady Lane Canyon | 4.3 mi |
Soledad, CA | 9 mi |
Gonzales, CA | 10 mi |
Chualar, CA | 14 mi |
Greenfield, CA | 16 mi |
Tres Pinos, CA | 17 mi |
Cushman Hill | Land | 2.3 mi |
North Wilderness Trail | Man-made | 2.4 mi |
Mount Reynolds | Land | 2.5 mi |
Gloria Lake | Water | 2.5 mi |
Willow Creek Peak | Land | 3.9 mi |
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 PINNACLES NATL MONUM which is approximately 7 miles away and has an elevation of 1,307 feet (898 feet lower than Williamson Valley). 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.
Month | Precip | AVG High Temp | AVG Low Temp |
---|---|---|---|
January | 3.32" | 62.7° | 33.6° |
February | 3.45" | 64.7° | 35.8° |
March | 3.47" | 66.6° | 37.6° |
April | 1.09" | 72.6° | 39.3° |
May | .48" | 79.6° | 42.9° |
June | .08" | 88.1° | 46.8° |
July | .04" | 94.4° | 50.7° |
August | .09" | 94.5° | 50.3° |
September | .32" | 90.3° | 48.3° |
October | .90" | 81.9° | 42.5° |
November | 1.72" | 69.9° | 36.6° |
December | 2.39" | 63.4° | 32.5° |
This location's average summer high temps are higher than 91% of other locations on record.
This location's average winter low temps are higher than 81% of other locations on record.
This location's average precipitation levels are lower than 80% of other locations on record.