Average Weather in October in Bothell West Washington, United States
Daily high temperatures decrease by 10°F, from 65°F to 55°F, rarely falling below 49°F or exceeding 74°F.
Daily low temperatures decrease by 6°F, from 51°F to 45°F, rarely falling below 38°F or exceeding 57°F.
For reference, on August 4, the hottest day of the year, temperatures in Bothell West typically range from 58°F to 76°F, while on December 23, the coldest day of the year, they range from 37°F to 45°F.
Average High and Low Temperature in October
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. The horizontal axis is the day, 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 October
The month of October in Bothell West experiences very rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 46% to 65%.
The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 54% of the time.
For reference, on December 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 73%, while on August 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 74%.
Cloud Cover Categories in October
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. In Bothell West, the chance of a wet day over the course of October is very rapidly increasing, starting the month at 29% and ending it at 51%.
For reference, the year's highest daily chance of a wet day is 59% on November 18, and its lowest chance is 9% on August 1.
Probability of Precipitation in October
The average sliding 31-day rainfall during October in Bothell West is very rapidly increasing, starting the month at 3.1 inches, when it rarely exceeds 5.7 inches or falls below 0.7 inches, and ending the month at 6.8 inches, when it rarely exceeds 10.7 inches or falls below 3.0 inches.
Average Monthly Rainfall in October
Over the course of October in Bothell West, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 40 minutes, implying an average daily decrease of 3 minutes, 19 seconds, and weekly decrease of 23 minutes, 14 seconds.
The shortest day of the month is October 31, with 10 hours, 0 minutes of daylight and the longest day is October 1, with 11 hours, 40 minutes of daylight.
Hours of Daylight and Twilight in October
The earliest sunrise of the month in Bothell West is 7:08 AM on October 1 and the latest sunrise is 44 minutes later at 7:52 AM on October 31.
The latest sunset is 6:47 PM on October 1 and the earliest sunset is 56 minutes earlier at 5:52 PM on October 31.
Daylight saving time is observed in Bothell West during 2018, but it neither starts nor ends during October, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:10 AM and sets 16 hours, 1 minute later, at 9:11 PM, while on December 21, the shortest day of the year, it rises at 7:55 AM and sets 8 hours, 24 minutes later, at 4:19 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in October
The chance that a given day will be muggy in Bothell West is essentially constant during October, remaining around 0% throughout.
For reference, on July 24, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in October
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Bothell West is increasing during October, increasing from 3.3 miles per hour to 4.4 miles per hour over the course of the month.
For reference, on December 4, the windiest day of the year, the daily average wind speed is 5.1 miles per hour, while on August 2, the calmest day of the year, the daily average wind speed is 2.5 miles per hour.
Average Wind Speed in October
Wind Direction in October
Bothell West is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature in Bothell West is gradually decreasing during October, falling by 2°F, from 53°F to 51°F, over the course of the month.
Average Water Temperature in October
The growing season in Bothell West typically lasts for 9.2 months (280 days), from around February 20 to around November 27, rarely starting before January 19 or after March 14, and rarely ending before November 3 or after December 20.
The month of October in Bothell West is very likely fully within the growing season, with the chance that a given day is in the growing season gradually decreasing from 100% to 93% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in October
The average accumulated growing degree days in Bothell West are gradually increasing during October, increasing by 130°F, from 1,823°F to 1,953°F, over the course of the month.
Growing Degree Days in October
The average daily incident shortwave solar energy in Bothell West is rapidly decreasing during October, falling by 1.7 kWh, from 3.4 kWh to 1.8 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in October
For the purposes of this report, the geographical coordinates of Bothell West are 47.805 deg latitude, -122.241 deg longitude, and 328 ft elevation.
The topography within 2 miles of Bothell West contains only modest variations in elevation, with a maximum elevation change of 427 feet and an average elevation above sea level of 299 feet. Within 10 miles contains only modest variations in elevation (669 feet). Within 50 miles contains significant variations in elevation (7,720 feet).
The area within 2 miles of Bothell West is covered by artificial surfaces (93%), within 10 miles by artificial surfaces (54%) and water (19%), and within 50 miles by trees (51%) and water (17%).
This report illustrates the typical weather in Bothell West year round, 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 Bothell West.
For each station, the records are corrected for the elevation difference between that station and Bothell West 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 Bothell West is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Bothell West and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .