This report describes the typical weather at the Sexton Summit (Grants Pass, Oregon, United States) weather station over the course of an average year. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Grants Pass, Oregon has a mediterranean climate with dry warm summers and mild winters. The area within 25 mi of this station is covered by forests (98%).
Over the course of a year, the temperature typically varies from 32°F to 76°F and is rarely below 24°F or above 86°F.
The warm season lasts from June 28 to September 9 with an average daily high temperature above 69°F. The hottest day of the year is July 31, with an average high of 76°F and low of 55°F.
The cold season lasts from November 7 to April 6 with an average daily high temperature below 47°F. The coldest day of the year is December 28, with an average low of 32°F and high of 40°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 9:03 hours of daylight; the longest day is June 20 with 15:20 hours of daylight.
The earliest sunrise is at 5:35am on June 17 and the latest sunset is at 8:56pm on June 23. The latest sunrise is at 7:50am on November 3 and the earliest sunset is at 4:40pm on December 10.
Daylight saving time (DST) is observed in this location during 2012, starting in the spring on March 11 and ending in the fall on November 4.
The median cloud cover ranges from 1% (clear) to 97% (overcast). The sky is cloudiest on March 15 and clearest on August 6. The clearer part of the year begins around June 2. The cloudier part of the year begins around October 21.
On August 6, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 54% of the time, and overcast or mostly cloudy 11% of the time.
On March 15, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 47% of the time, and clear or mostly clear 18% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around March 13, occurring in 57% of days. Precipitation is least likely around August 9, occurring in 13% of days.
Over the entire year, the most common forms of precipitation are light rain, light snow, moderate rain, and moderate snow.
Light rain is the most severe precipitation observed during 37% of those days with precipitation. It is most likely around May 21, when it is observed during 19% of all days.
Light snow is the most severe precipitation observed during 28% of those days with precipitation. It is most likely around March 13, when it is observed during 24% of all days.
Moderate rain is the most severe precipitation observed during 16% of those days with precipitation. It is most likely around November 27, when it is observed during 10% of all days.
Moderate snow is the most severe precipitation observed during 10% of those days with precipitation. It is most likely around December 23, when it is observed during 9% of all days.
During the warm season, which lasts from June 28 to September 9, there is a 15% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of light rain (69% of days with precipitation have at worst light rain), moderate rain (14%), and thunderstorms (10%).
During the cold season, which lasts from November 7 to April 6, there is a 54% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of light snow (36% of days with precipitation have at worst light snow), light rain (27%), moderate rain (15%), and moderate snow (14%).
The likelihood of snow falling is highest around March 13, occurring in 36% of days. The season in which it is relatively likely for snow to fall spans from October 29 to May 16.
Either snow rarely accumulates at this location or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 36% (comfortable) to 93% (very humid) over the course of the year, rarely dropping below 18% (dry) and reaching as high as 100% (very humid).
The air is driest around August 4, at which time the relative humidity drops below 43% (comfortable) three days out of four; it is most humid around March 31, exceeding 91% (very humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a year, the dew point typically varies from 21°F (dry) to 53°F (very comfortable) and is rarely below 9°F (dry) or above 58°F (comfortable).
The time of the year between July 5 and August 24 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of the year typical wind speeds vary from 1 mph to 19 mph (light air to fresh breeze), rarely exceeding 27 mph (strong breeze).
The highest average wind speed of 12 mph (moderate breeze) occurs around January 3, at which time the average daily maximum wind speed is 19 mph (fresh breeze).
The lowest average wind speed of 8 mph (gentle breeze) occurs around May 14, at which time the average daily maximum wind speed is 15 mph (moderate breeze).