Average Weather For Auburn, California, USA

Location

This report describes the typical weather at the Auburn Municipal Airport (Auburn, California, United States) weather station over the course of an average year. It is based on the historical records from 2003 to 2012. Earlier records are either unavailable or unreliable.

Auburn, California has a mediterranean climate with dry hot summers and mild winters. The area within 25 mi of this station is covered by grasslands (48%), forests (43%), and croplands (6%).

Temperature

Over the course of a year, the temperature typically varies from 38°F to 92°F and is rarely below 32°F or above 98°F.

Daily High and Low Temperature

The daily average low (blue) and high (red) temperature with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

The warm season lasts from June 17 to September 13 with an average daily high temperature above 84°F. The hottest day of the year is July 18, with an average high of 92°F and low of 67°F.

The cold season lasts from November 14 to April 7 with an average daily high temperature below 61°F. The coldest day of the year is January 10, with an average low of 38°F and high of 56°F.

Fraction of Time Spent in Various Temperature Bands

The average fraction of time spent in various temperature bands: frigid (below 15°F), freezing (15°F to 32°F), cold (32°F to 50°F), cool (50°F to 65°F), comfortable (65°F to 75°F), warm (75°F to 85°F), hot (85°F to 100°F) and sweltering (above 100°F).

Sun

The length of the day varies significantly over the course of the year. The shortest day is December 21 with 9:26 hours of daylight; the longest day is June 20 with 14:55 hours of daylight.

Daily Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line), with various degrees of daylight, twilight, and night, indicated by the color bands. From bottom (most yellow) to top (most gray): full daylight, solar twilight (Sun is visible but less than 6° from the horizon), civil twilight (Sun is not visible but is less than 6° below the horizon), nautical twilight (Sun is between 6° and 12° below the horizon), astronomical twilight (Sun is between 12° and 18° below the horizon), and full night.

The earliest sunrise is at 5:38am on June 15 and the latest sunset is at 8:34pm on June 25. The latest sunrise is at 7:34am on November 3 and the earliest sunset is at 4:42pm on December 10.

Daylight savings time (DST) is observed in this location during 2012, starting in the spring on March 11 and ending in the fall on November 4.

Daily Sunrise & Sunset with Twilight and Daylight Savings Time

The solar day over the course of the year 2012 . From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (solar, civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight savings time are indicated by the "DST" labels.

Clouds

The median cloud cover ranges from 0% (clear) to 42% (partly cloudy). The sky is cloudiest on January 18 and clearest on July 10. The clearer part of the year begins around March 29. The cloudier part of the year begins around November 27.

Median Cloud Cover

The median daily cloud cover (black line) with percentile bands (inner band from 40th to 60th percentile, outer band from 25th to 75th percentile).

On July 10, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 91% of the time, and overcast or mostly cloudy 2% of the time.

On January 18, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 49% of the time, and clear or mostly clear 51% of the time.

Cloud Cover Types

The fraction of time spent in each of the five sky cover categories. From top (most blue) to bottom (most gray), the categories are clear, mostly clear, partly cloudy, mostly cloudy, and overcast. Pink indicates missing data. Outside of the United States clear skies are often reported ambiguously, leading them to be lumped in with the missing data.

Precipitation

There is either very little precipitation at this location, or the weather station does not reliably report the conditions.

Snow

Either snow is exceptionally unlikely to fall at any time during the year at this location or this station does not reliably report precipitation types.

Humidity

The relative humidity typically ranges from 21% (dry) to 96% (very humid) over the course of the year, rarely dropping below 14% (very dry) and reaching as high as 100% (very humid).

The air is driest around August 25, at which time the relative humidity drops below 24% (dry) three days out of four; it is most humid around December 29, exceeding 93% (very humid) three days out of four.

Relative Humidity

The average daily high (blue) and low (brown) relative humidity with percentile bands (inner bands from 25th to 75th percentile, outer bands from 10th to 90th percentile).

Dew Point

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 31°F (dry) to 55°F (very comfortable) and is rarely below 20°F (dry) or above 60°F (comfortable).

The time of the year between May 9 and September 2 is the most comfortable, with dew points that are neither too dry nor too muggy.

Dew Point

The daily average low (blue) and high (red) dew point with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Wind

Over the course of the year typical wind speeds vary from 0 mph to 11 mph (calm to gentle breeze), rarely exceeding 17 mph (moderate breeze).

The highest average wind speed of 6 mph (light breeze) occurs around March 23, at which time the average daily maximum wind speed is 11 mph (gentle breeze).

The lowest average wind speed of 3 mph (light breeze) occurs around January 15, at which time the average daily maximum wind speed is 9 mph (gentle breeze).

Wind Speed

The average daily minimum (red), maximum (green), and average (black) wind speed with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
The wind is most often out of the east (26% of the time), south east (14% of the time), south (12% of the time), and west (12% of the time). The wind is least often out of the north (2% of the time) and north east (2% of the time).

Wind Directions Over the Entire Year

The fraction of time spent with the wind blowing from the various directions over the entire year. Values do not sum to 100% because the wind direction is undefined when the wind speed is zero.

Fraction of Time Spent with Various Wind Directions

The fraction of time spent with the wind blowing from the various directions on a daily basis. Stacked values do not always sum to 100% because the wind direction is undefined when the wind speed is zero.