Average Weather in April in Snoqualmie Washington, United States
In Snoqualmie, the month of April is characterized by rising daily high temperatures, with daily highs increasing by 6°F, from 55°F to 61°F over the course of the month, and rarely exceeding 74°F or dropping below 47°F.
Daily low temperatures increase by 4°F, from 41°F to 46°F, rarely falling below 35°F or exceeding 52°F.
For reference, on August 3, the hottest day of the year, temperatures in Snoqualmie typically range from 59°F to 77°F, while on December 23, the coldest day of the year, they range from 35°F to 43°F.
Average High and Low Temperature in April
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. 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 April
The month of April in Snoqualmie experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 73% to 65%.
The clearest day of the month is April 30, with clear, mostly clear, or partly cloudy conditions 35% of the time.
For reference, on November 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 79%, while on August 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 70%.
Cloud Cover in April
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Snoqualmie, the chance of a wet day over the course of April is very rapidly decreasing, starting the month at 50% and ending it at 40%.
For reference, the year's highest daily chance of a wet day is 62% on November 18, and its lowest chance is 10% on August 6.
Probability of Precipitation in April
The average sliding 31-day rainfall during April in Snoqualmie is rapidly decreasing, starting the month at 5.2 inches, when it rarely exceeds 8.3 inches or falls below 2.5 inches, and ending the month at 3.4 inches, when it rarely exceeds 5.7 inches or falls below 1.4 inches.
Average Monthly Rainfall in April
Over the course of April in Snoqualmie, 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, 35 minutes, implying an average daily increase of 3 minutes, 16 seconds, and weekly increase of 22 minutes, 49 seconds.
The shortest day of the month is April 1, with 12 hours, 52 minutes of daylight and the longest day is April 30, with 14 hours, 27 minutes of daylight.
Hours of Daylight and Twilight in April
The latest sunrise of the month in Snoqualmie is 6:45 AM on April 1 and the earliest sunrise is 54 minutes earlier at 5:51 AM on April 30.
The earliest sunset is 7:37 PM on April 1 and the latest sunset is 41 minutes later at 8:18 PM on April 30.
Daylight saving time is observed in Snoqualmie during 2017, but it neither starts nor ends during April, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:09 AM and sets 15 hours, 59 minutes later, at 9:08 PM, while on December 21, the shortest day of the year, it rises at 7:52 AM and sets 8 hours, 26 minutes later, at 4:18 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in April
The chance that a given day will be muggy in Snoqualmie is essentially constant during April, remaining around 0% throughout.
For reference, on July 29, 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 April
The average hourly wind speed in Snoqualmie is essentially constant during April, remaining within 0.1 miles per hour of 2.1 miles per hour throughout.
For reference, on December 29, the windiest day of the year, the daily average wind speed is 3.0 miles per hour, while on August 5, the calmest day of the year, the daily average wind speed is 1.5 miles per hour.
Average Wind Speed in April
Wind Direction in April
Snoqualmie 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 Snoqualmie is gradually increasing during April, rising by 2°F, from 48°F to 50°F, over the course of the month.
Average Water Temperature in April
The average daily incident shortwave solar energy in Snoqualmie is increasing during April, rising by 1.4 kWh, from 3.7 kWh to 5.0 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in April
For the purposes of this report, the geographical coordinates of Snoqualmie are 47.529 deg latitude, -121.825 deg longitude, and 627 ft elevation.
The topography within 2 miles of Snoqualmie contains very significant variations in elevation, with a maximum elevation change of 1,404 feet and an average elevation above sea level of 555 feet. Within 10 miles contains very significant variations in elevation (4,849 feet). Within 50 miles also contains extreme variations in elevation (14,383 feet).
The area within 2 miles of Snoqualmie is covered by trees (77%) and artificial surfaces (19%), within 10 miles by trees (74%) and shrubs (17%), and within 50 miles by trees (55%) and shrubs (16%).
This report illustrates the typical weather in Snoqualmie 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 Snoqualmie.
For each station, the records are corrected for the elevation difference between that station and Snoqualmie 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 Snoqualmie is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Snoqualmie and a given station.
The stations contributing to this reconstruction are: Renton Municipal Airport (59%, 29 kilometers, west); Stampede Pass (10%, 46 kilometers, southeast); and Snohomish County Airport (Paine Field) (30%, 54 kilometers, northwest).
Time zones for aiports and weather stations are provided by AskGeo.com .