Average Weather in February in Granite Falls Washington, United States
Daily high temperatures increase by 3°F, from 47°F to 50°F, rarely falling below 39°F or exceeding 58°F.
Daily low temperatures are around 35°F, rarely falling below 25°F or exceeding 44°F.
For reference, on August 3, the hottest day of the year, temperatures in Granite Falls typically range from 54°F to 77°F, while on December 20, the coldest day of the year, they range from 33°F to 43°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 Granite Falls experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 73% throughout the month.
The clearest day of the month is February 20, with clear, mostly clear, or partly cloudy conditions 29% of the time.
For reference, on November 30, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 77%, while on August 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 71%.
Cloud Cover Categories in February
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Granite Falls, the chance of a wet day over the course of February is gradually increasing, starting the month at 50% and ending it at 52%.
For reference, the year's highest daily chance of a wet day is 62% on November 19, and its lowest chance is 10% on August 5.
Over the course of February in Granite Falls, the chance of a day with only rain increases from 46% to 50%, the chance of a day with mixed snow and rain remains an essentially constant 2% throughout, and the chance of a day with only snow remains an essentially constant 0% throughout.
Probability of Precipitation in February
The average sliding 31-day rainfall during February in Granite Falls is decreasing, starting the month at 7.3 inches, when it rarely exceeds 11.3 inches or falls below 3.1 inches, and ending the month at 6.4 inches, when it rarely exceeds 10.2 inches or falls below 2.5 inches.
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 Granite Falls is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.6 inches or falling below -0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in February
Over the course of February in Granite Falls, 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, 28 minutes, implying an average daily increase of 3 minutes, 15 seconds, and weekly increase of 22 minutes, 47 seconds.
The shortest day of the month is February 1, with 9 hours, 33 minutes of daylight and the longest day is February 28, with 11 hours, 0 minutes of daylight.
Hours of Daylight and Twilight in February
The latest sunrise of the month in Granite Falls is 7:35 AM on February 1 and the earliest sunrise is 45 minutes earlier at 6:50 AM on February 28.
The earliest sunset is 5:08 PM on February 1 and the latest sunset is 43 minutes later at 5:50 PM on February 28.
Daylight saving time is observed in Granite Falls during 2018, 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 5:07 AM and sets 16 hours, 4 minutes 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, 22 minutes later, at 4:16 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in February
The chance that a given day will be muggy in Granite Falls is essentially constant during February, remaining around 0% throughout.
For reference, on August 3, 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 Granite Falls is essentially constant during February, remaining within 0.2 miles per hour of 4.6 miles per hour throughout.
For reference, on December 29, the windiest day of the year, the daily average wind speed is 5.0 miles per hour, while on August 6, the calmest day of the year, the daily average wind speed is 2.5 miles per hour.
Average Wind Speed in February
Wind Direction in February
Granite Falls 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 Granite Falls is essentially constant during February, remaining around 46°F throughout.
The lowest average surface water temperature during February is 46°F on February 12.
Average Water Temperature in February
The growing season in Granite Falls typically lasts for 6.7 months (206 days), from around April 10 to around November 2, rarely starting before March 20 or after May 3, and rarely ending before October 13 or after November 21.
The month of February in Granite Falls 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 Granite Falls are essentially constant during February, remaining within 5°F of 11°F throughout.
Growing Degree Days in February
The average daily incident shortwave solar energy in Granite Falls is gradually increasing during February, rising by 0.8 kWh, from 1.4 kWh to 2.3 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 Granite Falls are 48.084 deg latitude, -121.969 deg longitude, and 443 ft elevation.
The topography within 2 miles of Granite Falls contains very significant variations in elevation, with a maximum elevation change of 938 feet and an average elevation above sea level of 419 feet. Within 10 miles contains very significant variations in elevation (5,249 feet). Within 50 miles also contains extreme variations in elevation (10,764 feet).
The area within 2 miles of Granite Falls is covered by trees (79%) and artificial surfaces (16%), within 10 miles by trees (71%) and artificial surfaces (14%), and within 50 miles by trees (53%) and water (16%).
This report illustrates the typical weather in Granite Falls 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Granite Falls.
For each station, the records are corrected for the elevation difference between that station and Granite Falls 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 Granite Falls is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Granite Falls and a given station.
The stations contributing to this reconstruction are: Arlington Municipal Airport (66%, 17 kilometers, northwest); Snohomish County Airport (Paine Field) (32%, 30 kilometers, southwest); and Omak Airport (2.1%, 186 kilometers, east).
Time zones for aiports and weather stations are provided by AskGeo.com .