Average Weather in February in Ahtanum Washington, United States
In Ahtanum, the month of February is characterized by rapidly rising daily high temperatures, with daily highs increasing by 9°F, from 41°F to 51°F over the course of the month, and rarely exceeding 60°F or dropping below 31°F.
Daily low temperatures increase by 4°F, from 26°F to 30°F, rarely falling below 16°F or exceeding 39°F.
For reference, on August 1, the hottest day of the year, temperatures in Ahtanum typically range from 56°F to 89°F, while on December 23, the coldest day of the year, they range from 23°F to 35°F.
Average High and Low Temperature in February
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on February. 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 February
The month of February in Ahtanum experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 62% throughout the month.
The clearest day of the month is February 21, with clear, mostly clear, or partly cloudy conditions 40% of the time.
For reference, on January 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 65%, while on August 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 82%.
Cloud Cover Categories in February
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Ahtanum, the chance of a wet day over the course of February is essentially constant, remaining around 30% throughout.
For reference, the year's highest daily chance of a wet day is 38% on December 1, and its lowest chance is 4% on August 5.
Over the course of February in Ahtanum, the chance of a day with only rain increases from 18% to 23%, the chance of a day with mixed snow and rain decreases from 6% to 4%, and the chance of a day with only snow decreases from 6% to 2%.
Probability of Precipitation in February
The average sliding 31-day rainfall during February in Ahtanum is essentially constant, remaining about 1.6 inches throughout, and rarely exceeding 3.6 inches or falling below 0.2 inches.
The highest average 31-day accumulation is 1.6 inches on February 18.
Average Monthly Rainfall in February
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. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day liquid-equivalent snowfall during February in Ahtanum is gradually decreasing, starting the month at 0.6 inches, when it rarely exceeds 1.5 inches, and ending the month at 0.2 inches, when it rarely exceeds 0.7 inches.
Average Monthly Liquid-Equivalent Snowfall in February
Over the course of February in Ahtanum, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 23 minutes, implying an average daily increase of 3 minutes, 5 seconds, and weekly increase of 21 minutes, 33 seconds.
The shortest day of the month is February 1, with 9 hours, 41 minutes of daylight and the longest day is February 28, with 11 hours, 5 minutes of daylight.
Hours of Daylight and Twilight in February
The latest sunrise of the month in Ahtanum is 7:25 AM on February 1 and the earliest sunrise is 43 minutes earlier at 6:43 AM on February 28.
The earliest sunset is 5:07 PM on February 1 and the latest sunset is 40 minutes later at 5:47 PM on February 28.
Daylight saving time is observed in Ahtanum during 2017, but it neither starts nor ends during February, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:09 AM and sets 15 hours, 50 minutes later, at 8:59 PM, while on December 21, the shortest day of the year, it rises at 7:43 AM and sets 8 hours, 34 minutes later, at 4:17 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in February
The chance that a given day will be muggy in Ahtanum is essentially constant during February, remaining around 0% throughout.
For reference, on July 16, 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 February
The average hourly wind speed in Ahtanum is essentially constant during February, remaining within 0.2 miles per hour of 6.4 miles per hour throughout.
For reference, on March 29, the windiest day of the year, the daily average wind speed is 7.1 miles per hour, while on December 20, the calmest day of the year, the daily average wind speed is 5.8 miles per hour.
Average Wind Speed in February
Wind Direction in February
The growing season in Ahtanum typically lasts for 4.9 months (150 days), from around May 8 to around October 5, rarely starting before April 18 or after May 26, and rarely ending before September 18 or after October 24.
The month of February in Ahtanum is reliably fully outside of the growing season.
Time Spent in Various Temperature Bands and the Growing Season in February
The average accumulated growing degree days in Ahtanum is essentially constant during February, remaining within 4°F of 5°F throughout.
Growing Degree Days in February
The average daily incident shortwave solar energy in Ahtanum is increasing during February, rising by 1.1 kWh, from 1.9 kWh to 3.0 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in February
For the purposes of this report, the geographical coordinates of Ahtanum are 46.560 deg latitude, -120.622 deg longitude, and 1,286 ft elevation.
The topography within 2 miles of Ahtanum contains only modest variations in elevation, with a maximum elevation change of 305 feet and an average elevation above sea level of 1,256 feet. Within 10 miles contains only modest variations in elevation (2,467 feet). Within 50 miles contains large variations in elevation (11,900 feet).
The area within 2 miles of Ahtanum is covered by cropland (86%), within 10 miles by cropland (44%) and shrubs (39%), and within 50 miles by shrubs (55%) and trees (26%).
This report illustrates the typical weather in Ahtanum 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 Ahtanum.
For each station, the records are corrected for the elevation difference between that station and Ahtanum 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 Ahtanum is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Ahtanum and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .