Average Weather at Southwest Oregon Regional Airport Oregon, United States
At Southwest Oregon Regional Airport, the summers are comfortable, dry, and mostly clear and the winters are cold, wet, windy, and mostly cloudy. Over the course of the year, the temperature typically varies from 41°F to 67°F and is rarely below 32°F or above 73°F.
Based on the tourism score, the best time of year to visit Southwest Oregon Regional Airport for warm-weather activities is from early July to late August.
The warm season lasts for 3.5 months, from June 22 to October 8, with an average daily high temperature above 64°F. The hottest day of the year is August 25, with an average high of 67°F and low of 53°F.
The cool season lasts for 3.5 months, from November 24 to March 6, with an average daily high temperature below 55°F. The coldest day of the year is December 21, with an average low of 41°F and high of 52°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
At Southwest Oregon Regional Airport, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.
The clearer part of the year at Southwest Oregon Regional Airport begins around June 12 and lasts for 4.0 months, ending around October 10. On August 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 84% of the time, and overcast or mostly cloudy 16% of the time.
The cloudier part of the year begins around October 10 and lasts for 8.0 months, ending around June 12. On December 27, the cloudiest day of the year, the sky is overcast or mostly cloudy 73% of the time, and clear, mostly clear, or partly cloudy 27% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Southwest Oregon Regional Airport varies very significantly throughout the year.
The wetter season lasts 6.3 months, from October 18 to April 27, with a greater than 29% chance of a given day being a wet day. The chance of a wet day peaks at 57% on December 1.
The drier season lasts 5.7 months, from April 27 to October 18. The smallest chance of a wet day is 2% on August 3.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 57% on December 1.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Southwest Oregon Regional Airport experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 10 months, from August 28 to July 2, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around December 5, with an average total accumulation of 9.5 inches.
The rainless period of the year lasts for 1.8 months, from July 2 to August 28. The least rain falls around July 30, with an average total accumulation of 0.2 inches.
Average Monthly Rainfall
The length of the day at Southwest Oregon Regional Airport varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 57 minutes of daylight; the longest day is June 21, with 15 hours, 25 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:35 AM on June 15, and the latest sunrise is 2 hours, 19 minutes later at 7:55 AM on November 3. The earliest sunset is at 4:40 PM on December 9, and the latest sunset is 4 hours, 21 minutes later at 9:01 PM on June 26.
Daylight saving time (DST) is observed at Southwest Oregon Regional Airport during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level at Southwest Oregon Regional Airport, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
The average hourly wind speed at Southwest Oregon Regional Airport experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.9 months, from November 4 to April 1, with average wind speeds of more than 8.6 miles per hour. The windiest day of the year is December 4, with an average hourly wind speed of 9.9 miles per hour.
The calmer time of year lasts for 7.1 months, from April 1 to November 4. The calmest day of the year is September 28, with an average hourly wind speed of 7.2 miles per hour.
Average Wind Speed
The predominant average hourly wind direction at Southwest Oregon Regional Airport varies throughout the year.
The wind is most often from the north for 6.5 months, from April 6 to October 20, with a peak percentage of 77% on July 29. The wind is most often from the south for 5.5 months, from October 20 to April 6, with a peak percentage of 47% on January 1.
Southwest Oregon Regional Airport 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 water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.3 months, from June 19 to September 29, with an average temperature above 55°F. The day of the year with the warmest water is August 25, with an average temperature of 57°F.
The time of year with cooler water lasts for 4.2 months, from December 15 to April 20, with an average temperature below 52°F. The day of the year with the coolest water is February 12, with an average temperature of 50°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is at Southwest Oregon Regional Airport throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Southwest Oregon Regional Airport for general outdoor tourist activities is from early July to late August, with a peak score in the first week of August.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Southwest Oregon Regional Airport for hot-weather activities is from mid August to early September, with a peak score in the last week of August.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season at Southwest Oregon Regional Airport typically lasts for 9.8 months (296 days), from around February 14 to around December 7, rarely starting after March 16, or ending before November 6.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms at Southwest Oregon Regional Airport should appear around March 15, only rarely appearing before February 15 or after April 25.
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 2.9 months, from May 28 to August 25, with an average daily incident shortwave energy per square meter above 6.3 kWh. The brightest day of the year is July 16, with an average of 7.6 kWh.
The darker period of the year lasts for 3.9 months, from October 28 to February 24, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest day of the year is December 26, with an average of 1.2 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Southwest Oregon Regional Airport are 43.417 deg latitude, -124.244 deg longitude, and 20 ft elevation.
The topography within 2 miles of Southwest Oregon Regional Airport contains only modest variations in elevation, with a maximum elevation change of 240 feet and an average elevation above sea level of 31 feet. Within 10 miles contains only modest variations in elevation (1,407 feet). Within 50 miles contains very significant variations in elevation (4,285 feet).
The area within 2 miles of Southwest Oregon Regional Airport is covered by herbaceous vegetation (53%), water (30%), and artificial surfaces (17%), within 10 miles by trees (37%) and water (35%), and within 50 miles by water (46%) and trees (38%).
This report illustrates the typical weather at Southwest Oregon Regional Airport, 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
Southwest Oregon Regional Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
The stations on which we may fall back are Roseburg Municipal Airport, Newport Municipal Airport, Sexton Summit,, Mahlon Sweet Field Airport, Brookings Airport, Corvallis Municipal Airport, Rogue Valley International - Medford Airport, and McNary Field.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Time zones for aiports and weather stations are provided by AskGeo.com .