Average Weather in April in Leavenworth Washington, United States
Daily high temperatures increase by 8°F, from 52°F to 60°F, rarely falling below 45°F or exceeding 72°F.
Daily low temperatures increase by 6°F, from 36°F to 42°F, rarely falling below 30°F or exceeding 50°F.
For reference, on August 2, the hottest day of the year, temperatures in Leavenworth typically range from 60°F to 83°F, while on December 29, the coldest day of the year, they range from 25°F to 33°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 Leavenworth experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 61% to 53%.
The clearest day of the month is April 30, with clear, mostly clear, or partly cloudy conditions 47% of the time.
For reference, on January 15, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 66%, while on August 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 79%.
Cloud Cover Categories in April
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Leavenworth, the chance of a wet day over the course of April is very rapidly decreasing, starting the month at 29% and ending it at 20%.
For reference, the year's highest daily chance of a wet day is 47% on November 18, and its lowest chance is 6% on August 5.
Over the course of April in Leavenworth, the chance of a day with only rain decreases from 27% to 20%, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 0% throughout.
Probability of Precipitation in April
The average sliding 31-day rainfall during April in Leavenworth is decreasing, starting the month at 1.8 inches, when it rarely exceeds 3.1 inches or falls below 0.7 inches, and ending the month at 1.2 inches, when it rarely exceeds 2.0 inches or falls below 0.4 inches.
Average Monthly Rainfall in April
Over the course of April in Leavenworth, 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, 54 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 Leavenworth is 6:41 AM on April 1 and the earliest sunrise is 54 minutes earlier at 5:46 AM on April 30.
The earliest sunset is 7:32 PM on April 1 and the latest sunset is 41 minutes later at 8:13 PM on April 30.
Daylight saving time is observed in Leavenworth during 2018, 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 5:04 AM and sets 15 hours, 59 minutes later, at 9:04 PM, while on December 21, the shortest day of the year, it rises at 7:48 AM and sets 8 hours, 26 minutes later, at 4:13 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in April
The chance that a given day will be muggy in Leavenworth is essentially constant during April, remaining around 0% throughout.
Humidity Comfort Levels in April
The average hourly wind speed in Leavenworth is essentially constant during April, remaining within 0.1 miles per hour of 4.9 miles per hour throughout.
For reference, on June 20, the windiest day of the year, the daily average wind speed is 5.2 miles per hour, while on December 21, the calmest day of the year, the daily average wind speed is 4.1 miles per hour.
Average Wind Speed in April
Wind Direction in April
Leavenworth 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 Leavenworth 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 growing season in Leavenworth typically lasts for 6.5 months (198 days), from around April 15 to around October 29, rarely starting before March 24 or after May 5, and rarely ending before October 11 or after November 17.
During April in Leavenworth, the chance that a given day is within the growing season is very rapidly increasing rising from 20% to 83% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in April
The average accumulated growing degree days in Leavenworth are gradually increasing during April, increasing by 53°F, from 11°F to 65°F, over the course of the month.
Growing Degree Days in April
The average daily incident shortwave solar energy in Leavenworth is increasing during April, rising by 1.4 kWh, from 4.4 kWh to 5.8 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 Leavenworth are 47.596 deg latitude, -120.661 deg longitude, and 1,716 ft elevation.
The topography within 2 miles of Leavenworth contains large variations in elevation, with a maximum elevation change of 3,015 feet and an average elevation above sea level of 1,618 feet. Within 10 miles contains large variations in elevation (7,703 feet). Within 50 miles also contains extreme variations in elevation (10,322 feet).
The area within 2 miles of Leavenworth is covered by shrubs (47%) and sparse vegetation (37%), within 10 miles by shrubs (34%) and trees (31%), and within 50 miles by shrubs (38%) and trees (37%).
This report illustrates the typical weather in Leavenworth 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Leavenworth.
For each station, the records are corrected for the elevation difference between that station and Leavenworth 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 Leavenworth is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Leavenworth and a given station.
The stations contributing to this reconstruction are: Pangborn Field (59%, 41 kilometers, southeast); Stampede Pass (19%, 62 kilometers, southwest); Arlington Municipal Airport (11%, 128 kilometers, northwest); and Omak Airport (12%, 129 kilometers, northeast).
Time zones for aiports and weather stations are provided by AskGeo.com .