Average Weather in September in Vale Oregon, United States
Daily high temperatures decrease by 12°F, from 86°F to 74°F, rarely falling below 61°F or exceeding 94°F.
Daily low temperatures decrease by 10°F, from 54°F to 44°F, rarely falling below 35°F or exceeding 62°F.
For reference, on July 26, the hottest day of the year, temperatures in Vale 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 September
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. 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 September
Gorobinci, Macedonia (5,993 miles away); Arguvan, Turkey (6,525 miles); and Pasragad Branch, Iran (6,929 miles) are the far-away foreign places with temperatures most similar to Vale (view comparison).
The month of September in Vale experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 21% to 32%.
The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 79% 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 September
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Vale, the chance of a wet day over the course of September is gradually increasing, starting the month at 6% and ending it at 8%.
For reference, the year's highest daily chance of a wet day is 23% on December 1, and its lowest chance is 3% on July 28.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Vale is essentially constant, remaining about 0.4 inches throughout, and rarely exceeding 1.1 inches.
Average Monthly Rainfall in September
Over the course of September in Vale, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 26 minutes, implying an average daily decrease of 2 minutes, 59 seconds, and weekly decrease of 20 minutes, 52 seconds.
The shortest day of the month is September 30, with 11 hours, 46 minutes of daylight and the longest day is September 1, with 13 hours, 12 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Vale is 7:12 AM on September 1 and the latest sunrise is 33 minutes later at 7:45 AM on September 30.
The latest sunset is 8:24 PM on September 1 and the earliest sunset is 53 minutes earlier at 7:31 PM on September 30.
Daylight saving time is observed in Vale during 2018, but it neither starts nor ends during September, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 6:06 AM and sets 15 hours, 29 minutes later, at 9:35 PM, while on December 21, the shortest day of the year, it rises at 8:20 AM and sets 8 hours, 53 minutes later, at 5:13 PM.
Sunrise & Sunset with Twilight in September
The chance that a given day will be muggy in Vale is essentially constant during September, 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 September
The average hourly wind speed in Vale is essentially constant during September, remaining within 0.1 miles per hour of 6.2 miles per hour throughout.
For reference, on April 11, the windiest day of the year, the daily average wind speed is 7.6 miles per hour, while on January 10, the calmest day of the year, the daily average wind speed is 5.5 miles per hour.
Average Wind Speed in September
Wind Direction in September
The growing season in Vale typically lasts for 5.6 months (170 days), from around April 26 to around October 13, rarely starting before April 4 or after May 15, and rarely ending before September 26 or after November 1.
The month of September in Vale is more likely than not fully within the growing season, with the chance that a given day is in the growing season decreasing from 100% to 82% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in September
The average accumulated growing degree days in Vale are increasing during September, increasing by 403°F, from 2,511°F to 2,914°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Vale is rapidly decreasing during September, falling by 1.6 kWh, from 6.3 kWh to 4.6 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in September
For the purposes of this report, the geographical coordinates of Vale are 43.982 deg latitude, -117.238 deg longitude, and 2,313 ft elevation.
The topography within 2 miles of Vale contains significant variations in elevation, with a maximum elevation change of 814 feet and an average elevation above sea level of 2,332 feet. Within 10 miles contains significant variations in elevation (1,102 feet). Within 50 miles contains very significant variations in elevation (5,686 feet).
The area within 2 miles of Vale is covered by cropland (54%), shrubs (20%), and grassland (16%), within 10 miles by grassland (42%) and cropland (37%), and within 50 miles by shrubs (62%) and cropland (18%).
This report illustrates the typical weather in Vale 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Vale.
For each station, the records are corrected for the elevation difference between that station and Vale 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 Vale is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Vale and a given station.
The stations contributing to this reconstruction are: Ontario Municipal Airport (84%, 19 kilometers, east); Baker Municipal Airport (6%, 106 kilometers, northwest); Burns Municipal Airport (3.6%, 145 kilometers, west); John Day State Airport (3.7%, 146 kilometers, west); and Rome State Airport (3.1%, 163 kilometers, south).
Time zones for aiports and weather stations are provided by AskGeo.com .