Average Weather in March in Ontario Oregon, United States
Daily high temperatures increase by 9°F, from 52°F to 61°F, rarely falling below 41°F or exceeding 72°F.
Daily low temperatures increase by 4°F, from 32°F to 36°F, rarely falling below 22°F or exceeding 45°F.
For reference, on July 26, the hottest day of the year, temperatures in Ontario typically range from 62°F to 93°F, while on January 1, the coldest day of the year, they range from 22°F to 34°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
Gorobinci, Macedonia (5,984 miles away); Arguvan, Turkey (6,518 miles); and Pasragad Branch, Iran (6,923 miles) are the far-away foreign places with temperatures most similar to Ontario (view comparison).
The month of March in Ontario experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 59% to 54%. The highest chance of overcast or mostly cloudy conditions is 59% on March 1.
The clearest day of the month is March 31, with clear, mostly clear, or partly cloudy conditions 46% of the time.
For reference, on January 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 60%, while on July 28, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 84%.
Cloud Cover Categories in March
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Ontario, the chance of a wet day over the course of March is decreasing, starting the month at 20% and ending it at 16%.
For reference, the year's highest daily chance of a wet day is 24% on December 1, and its lowest chance is 3% on July 29.
Over the course of March in Ontario, the chance of a day with only rain decreases from 18% to 15%, 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 March
The average sliding 31-day rainfall during March in Ontario is essentially constant, remaining about 0.8 inches throughout, and rarely exceeding 1.9 inches or falling below 0.1 inches.
The highest average 31-day accumulation is 0.8 inches on March 10.
Average Monthly Rainfall in March
Over the course of March in Ontario, 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, 31 minutes, implying an average daily increase of 3 minutes, 3 seconds, and weekly increase of 21 minutes, 19 seconds.
The shortest day of the month is March 1, with 11 hours, 12 minutes of daylight and the longest day is March 31, with 12 hours, 43 minutes of daylight.
Hours of Daylight and Twilight in March
The earliest sunrise of the month in Ontario is 7:08 AM on March 10 and the latest sunrise is 58 minutes later at 8:07 AM on March 11.
The earliest sunset is 6:36 PM on March 1 and the latest sunset is 1 hour, 38 minutes later at 8:13 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 6:04 AM and sets 15 hours, 29 minutes later, at 9:34 PM, while on December 21, the shortest day of the year, it rises at 8:19 AM and sets 8 hours, 53 minutes later, at 5:12 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in March
The chance that a given day will be muggy in Ontario is essentially constant during March, 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 September 23, 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 Ontario is gradually increasing during March, increasing from 6.6 miles per hour to 7.2 miles per hour over the course of the month.
For reference, on April 11, the windiest day of the year, the daily average wind speed is 7.3 miles per hour, while on January 10, the calmest day of the year, the daily average wind speed is 5.6 miles per hour.
Average Wind Speed in March
Wind Direction in March
The growing season in Ontario typically lasts for 5.6 months (170 days), from around April 26 to around October 13, rarely starting before April 4 or after May 16, and rarely ending before September 24 or after November 1.
The month of March in Ontario is very likely fully outside of the growing season, with the chance that a given day is in the growing season gradually increasing from 0% to 6% 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 Ontario are gradually increasing during March, increasing by 53°F, from 10°F to 63°F, over the course of the month.
Growing Degree Days in March
The average daily incident shortwave solar energy in Ontario is rapidly increasing during March, rising by 1.5 kWh, from 3.4 kWh to 4.9 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 Ontario are 44.027 deg latitude, -116.963 deg longitude, and 2,156 ft elevation.
The topography within 2 miles of Ontario is essentially flat, with a maximum elevation change of 82 feet and an average elevation above sea level of 2,159 feet. Within 10 miles is essentially flat (945 feet). Within 50 miles contains very significant variations in elevation (6,135 feet).
The area within 2 miles of Ontario is covered by artificial surfaces (50%), cropland (26%), and shrubs (23%), within 10 miles by cropland (65%) and grassland (19%), and within 50 miles by shrubs (55%) and grassland (20%).
This report illustrates the typical weather in Ontario 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 Ontario.
For each station, the records are corrected for the elevation difference between that station and Ontario 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 Ontario is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Ontario and a given station.
The stations contributing to this reconstruction are: Ontario Municipal Airport (97%, 4.1 kilometers, west); Caldwell Industrial Airport (2.3%, 50 kilometers, southeast); and McCall Airport (0.5%, 118 kilometers, northeast).
Time zones for aiports and weather stations are provided by AskGeo.com .