Average Weather in Carson Washington, United States
In Carson, the summers are warm, dry, and partly cloudy and the winters are very cold, wet, and overcast. Over the course of the year, the temperature typically varies from 32°F to 84°F and is rarely below 21°F or above 95°F.
Based on the tourism score, the best time of year to visit Carson for warm-weather activities is from early July to late August.
The warm season lasts for 3.0 months, from June 19 to September 18, with an average daily high temperature above 75°F. The hottest day of the year is August 4, with an average high of 84°F and low of 60°F.
The cold season lasts for 3.3 months, from November 15 to February 24, with an average daily high temperature below 49°F. The coldest day of the year is December 31, with an average low of 32°F and high of 40°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Carson, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.
The clearer part of the year in Carson begins around June 16 and lasts for 3.6 months, ending around October 5. On August 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 78% of the time, and overcast or mostly cloudy 22% of the time.
The cloudier part of the year begins around October 5 and lasts for 8.4 months, ending around June 16. On December 1, the cloudiest day of the year, the sky is overcast or mostly cloudy 81% of the time, and clear, mostly clear, or partly cloudy 19% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Carson varies very significantly throughout the year.
The wetter season lasts 6.9 months, from October 13 to May 8, with a greater than 33% chance of a given day being a wet day. The chance of a wet day peaks at 61% on November 27.
The drier season lasts 5.1 months, from May 8 to October 13. The smallest chance of a wet day is 5% on August 3.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 57% on November 19.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Carson experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 11 months, from August 9 to July 20, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around November 24, with an average total accumulation of 9.8 inches.
The rainless period of the year lasts for 2.9 weeks, from July 20 to August 9. The least rain falls around July 29, with an average total accumulation of 0.4 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Carson experiences significant seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 4.1 months, from November 11 to March 15, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 5, with an average total liquid-equivalent accumulation of 1.1 inches.
The snowless period of the year lasts for 7.9 months, from March 15 to November 11. The least snow falls around July 14, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Carson varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 40 minutes of daylight; the longest day is June 21, with 15 hours, 43 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:16 AM on June 15, and the latest sunrise is 2 hours, 33 minutes later at 7:50 AM on November 3. The earliest sunset is at 4:22 PM on December 10, and the latest sunset is 4 hours, 38 minutes later at 9:01 PM on June 26.
Daylight saving time (DST) is observed in Carson during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Carson, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Carson experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.2 months, from November 3 to March 10, with average wind speeds of more than 4.7 miles per hour. The windiest day of the year is December 29, with an average hourly wind speed of 5.5 miles per hour.
The calmer time of year lasts for 7.8 months, from March 10 to November 3. The calmest day of the year is August 12, with an average hourly wind speed of 3.9 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Carson varies throughout the year.
The wind is most often from the west for 8.8 months, from February 26 to November 19, with a peak percentage of 83% on June 30. The wind is most often from the east for 3.2 months, from November 19 to February 26, with a peak percentage of 49% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Carson throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Carson for general outdoor tourist activities is from early July to late August, with a peak score in the first week of August.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Carson for hot-weather activities is from mid July to mid August, with a peak score in the first week of August.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Carson typically lasts for 7.5 months (230 days), from around March 23 to around November 7, rarely starting before February 26 or after April 16, and rarely ending before October 18 or after December 6.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Carson should appear around April 17, only rarely appearing before April 1 or after May 1.
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 2.7 months, from June 1 to August 24, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest day of the year is July 16, with an average of 7.4 kWh.
The darker period of the year lasts for 3.9 months, from October 24 to February 22, with an average daily incident shortwave energy per square meter below 2.3 kWh. The darkest day of the year is December 25, with an average of 1.0 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Carson are 45.725 deg latitude, -121.819 deg longitude, and 594 ft elevation.
The topography within 2 miles of Carson contains very significant variations in elevation, with a maximum elevation change of 1,916 feet and an average elevation above sea level of 557 feet. Within 10 miles contains very significant variations in elevation (4,921 feet). Within 50 miles also contains extreme variations in elevation (12,277 feet).
The area within 2 miles of Carson is covered by trees (49%) and water (25%), within 10 miles by trees (80%) and shrubs (12%), and within 50 miles by trees (51%) and shrubs (29%).
This report illustrates the typical weather in Carson, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Carson.
For each station, the records are corrected for the elevation difference between that station and Carson according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Carson is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Carson and a given station.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Time zones for aiports and weather stations are provided by AskGeo.com .