Williams, OR climate
Williams has mild winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 33°, and about 6 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Williams feels like
Winter
Spring
Summer
Fall
Williams weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 47° | 33° | 6.0" | 2.7" | 15 | 2 | 36° – 47° |
| February | 51° | 33° | 4.3" | 2.2" | 12 | 1 | 35° – 48° |
| March | 56° | 34° | 3.9" | 0.5" | 14 | 0 | 40° – 51° |
| April | 61° | 38° | 2.6" | 0 | 12 | 0 | 45° – 54° |
| May | 70° | 43° | 1.6" | 0 | 9 | 0 | 51° – 63° |
| June | 77° | 47° | 0.8" | 0 | 4 | 0 | 59° – 69° |
| July | 87° | 54° | 0.3" | 0 | 2 | 0 | 63° – 75° |
| August | 87° | 53° | 0.3" | 0 | 1 | 0 | 66° – 74° |
| September | 81° | 48° | 0.6" | 0 | 3 | 0 | 61° – 68° |
| October | 67° | 41° | 2.1" | 0 | 7 | 0 | 50° – 59° |
| November | 53° | 36° | 4.8" | 0.1" | 13 | 0 | 37° – 49° |
| December | 45° | 32° | 7.0" | 0.9" | 15 | 1 | 36° – 43° |
| Year | 65° | 41° | 34.1" | 6.4" | 108 | 4 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Williams
Williams gets 34 inches of rain and melted snow a year. December is the wettest month and August the driest. Rain or snow falls on about 108 days a year.
About 201 frost-free days a year
In half of years the last 32° night comes by April 8 and the first one by October 28. That leaves about 201 frost-free days for gardens, longer than 73% of U.S. towns.
Heating and cooling a home in Williams
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Williams, 85% of that work is heating and 15% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Williams compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Williams averaged 1.5° warmer than the 1900s. The biggest change is in January (+2.8°). The shift is larger than in 70% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Williams’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 35° to 48°. September is the most reliable, staying within 7°.
Common questions about Williams’s climate
What is the coldest month in Williams?
December, with a typical high of 45° and a low of 32°.
What is the hottest month in Williams?
July, with a typical high of 87° and a low of 54°. About 55 days a year reach 90°.
How much snow does Williams get?
About 6 inches in a normal winter, most of it in January.
When is the first frost in Williams?
In half of years the first 32° night comes by October 28, and the last spring frost by April 8.
What is the rainiest month in Williams?
December, with 7.0 inches of rain and melted snow. The year totals 34 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Williams itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Williams 1 Nw, OR (1 mi, snow) and Grants Pass, OR (14 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.