Average Weather in March in Hermiston Oregon, United States
Daily high temperatures increase by 8°F, from 54°F to 62°F, rarely falling below 45°F or exceeding 72°F.
Daily low temperatures increase by 5°F, from 33°F to 38°F, rarely falling below 23°F or exceeding 47°F.
For reference, on July 31, the hottest day of the year, temperatures in Hermiston typically range from 60°F to 93°F, while on December 30, the coldest day of the year, they range from 27°F to 39°F.
Average High and Low Temperature in March
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on March. 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 March
The month of March in Hermiston experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 60% throughout the month.
The clearest day of the month is March 31, with clear, mostly clear, or partly cloudy conditions 42% 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 July 29, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 83%.
Cloud Cover Categories in March
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Hermiston, the chance of a wet day over the course of March is gradually decreasing, starting the month at 17% and ending it at 14%.
For reference, the year's highest daily chance of a wet day is 24% on November 29, and its lowest chance is 3% on August 4.
Over the course of March in Hermiston, the chance of a day with only rain remains an essentially constant 15% throughout, the chance of a day with mixed snow and rain remains an essentially constant 0% throughout, and the chance of a day with only snow remains an essentially constant 1% throughout.
Probability of Precipitation in March
The average sliding 31-day rainfall during March in Hermiston is essentially constant, remaining about 0.6 inches throughout, and rarely exceeding 1.2 inches or falling below 0.2 inches.
Average Monthly Rainfall in March
Over the course of March in Hermiston, 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, 37 minutes, implying an average daily increase of 3 minutes, 15 seconds, and weekly increase of 22 minutes, 42 seconds.
The shortest day of the month is March 1, with 11 hours, 8 minutes of daylight and the longest day is March 31, with 12 hours, 46 minutes of daylight.
Hours of Daylight and Twilight in March
The earliest sunrise of the month in Hermiston is 6:19 AM on March 10 and the latest sunrise is 58 minutes later at 7:17 AM on March 11.
The earliest sunset is 5:43 PM on March 1 and the latest sunset is 1 hour, 41 minutes later at 7:24 PM on March 31.
Daylight saving time (DST) starts at 3:00 AM on March 11, 2018, shifting sunrise and sunset to be an hour later.
For reference, on June 21, the longest day of the year, the Sun rises at 5:07 AM and sets 15 hours, 44 minutes later, at 8:51 PM, while on December 21, the shortest day of the year, it rises at 7:35 AM and sets 8 hours, 40 minutes later, at 4:15 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in March
The chance that a given day will be muggy in Hermiston is essentially constant during March, remaining around 0% throughout.
For reference, on July 23, 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 March
The average hourly wind speed in Hermiston is gradually increasing during March, increasing from 8.3 miles per hour to 8.8 miles per hour over the course of the month.
For reference, on March 27, the windiest day of the year, the daily average wind speed is 8.9 miles per hour, while on October 6, the calmest day of the year, the daily average wind speed is 7.3 miles per hour.
The highest daily average wind speed during March is 8.9 miles per hour on March 27.
Average Wind Speed in March
Wind Direction in March
The growing season in Hermiston typically lasts for 5.9 months (179 days), from around April 18 to around October 14, rarely starting before March 29 or after May 10, and rarely ending before September 26 or after November 1.
The month of March in Hermiston is more likely than not fully outside of the growing season, with the chance that a given day is in the growing season increasing from 0% to 12% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in March
The average accumulated growing degree days in Hermiston are gradually increasing during March, increasing by 68°F, from 25°F to 93°F, over the course of the month.
Growing Degree Days in March
The average daily incident shortwave solar energy in Hermiston is increasing during March, rising by 1.5 kWh, from 3.0 kWh to 4.5 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in March
For the purposes of this report, the geographical coordinates of Hermiston are 45.840 deg latitude, -119.289 deg longitude, and 512 ft elevation.
The topography within 2 miles of Hermiston contains only modest variations in elevation, with a maximum elevation change of 249 feet and an average elevation above sea level of 500 feet. Within 10 miles contains only modest variations in elevation (909 feet). Within 50 miles contains very significant variations in elevation (5,659 feet).
The area within 2 miles of Hermiston is covered by artificial surfaces (47%), cropland (36%), and shrubs (17%), within 10 miles by cropland (59%) and shrubs (27%), and within 50 miles by shrubs (52%) and cropland (32%).
This report illustrates the typical weather in Hermiston 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 Hermiston.
For each station, the records are corrected for the elevation difference between that station and Hermiston 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 Hermiston is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Hermiston and a given station.
The stations contributing to this reconstruction are: Hermiston Municipal Airport (97%, 2.7 kilometers, southeast); Tri-Cities Airport (2.9%, 49 kilometers, north); and The Dalles Municipal Airport (0.6%, 148 kilometers, west).
Time zones for aiports and weather stations are provided by AskGeo.com .