Average Weather in Joseph Oregon, United States
In Joseph, the summers are short, warm, and mostly clear; the winters are freezing and partly cloudy; and it is dry year round. Over the course of the year, the temperature typically varies from 19°F to 83°F and is rarely below 5°F or above 90°F.
Based on the tourism score, the best time of year to visit Joseph for warm-weather activities is from mid July to mid August.
The warm season lasts for 2.8 months, from June 20 to September 13, with an average daily high temperature above 72°F. The hottest day of the year is August 2, with an average high of 83°F and low of 49°F.
The cold season lasts for 3.4 months, from November 15 to February 26, with an average daily high temperature below 40°F. The coldest day of the year is December 29, with an average low of 19°F and high of 29°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
In Joseph, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Joseph begins around June 16 and lasts for 3.7 months, ending around October 6. On July 29, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 82% of the time, and overcast or mostly cloudy 18% of the time.
The cloudier part of the year begins around October 6 and lasts for 8.3 months, ending around June 16. On January 10, the cloudiest day of the year, the sky is overcast or mostly cloudy 67% of the time, and clear, mostly clear, or partly cloudy 33% 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 in Joseph varies throughout the year.
The wetter season lasts 8.0 months, from October 22 to June 22, with a greater than 20% chance of a given day being a wet day. The chance of a wet day peaks at 33% on December 1.
The drier season lasts 4.0 months, from June 22 to October 22. The smallest chance of a wet day is 7% on August 2.
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 in Joseph changes throughout the year.
Rain alone is the most common for 9.9 months, from February 3 to December 2. The highest chance of a day with rain alone is 30% on May 29.
Snow alone is the most common for 2.1 months, from December 2 to February 3. The highest chance of a day with snow alone is 16% on December 28.
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. Joseph experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 11 months, from August 15 to July 21, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around May 23, with an average total accumulation of 1.8 inches.
The rainless period of the year lasts for 3.7 weeks, from July 21 to August 15. The least rain falls around August 2, with an average total accumulation of 0.4 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Joseph experiences significant seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 5.7 months, from October 24 to April 14, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around December 30, with an average total liquid-equivalent accumulation of 1.2 inches.
The snowless period of the year lasts for 6.3 months, from April 14 to October 24. The least snow falls around July 21, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Joseph varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 43 minutes of daylight; the longest day is June 21, with 15 hours, 40 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:00 AM on June 15, and the latest sunrise is 2 hours, 31 minutes later at 7:31 AM on November 3. The earliest sunset is at 4:05 PM on December 10, and the latest sunset is 4 hours, 35 minutes later at 8:41 PM on June 26.
Daylight saving time (DST) is observed in Joseph 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 in Joseph, 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 in Joseph experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 5.9 months, from October 24 to April 20, with average wind speeds of more than 5.4 miles per hour. The windiest day of the year is December 30, with an average hourly wind speed of 6.7 miles per hour.
The calmer time of year lasts for 6.1 months, from April 20 to October 24. The calmest day of the year is August 10, with an average hourly wind speed of 4.1 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Joseph varies throughout the year.
The wind is most often from the west for 3.4 months, from March 30 to July 12 and for 1.5 months, from August 19 to October 3, with a peak percentage of 45% on June 20. The wind is most often from the north for 1.2 months, from July 12 to August 19, with a peak percentage of 42% on July 21. The wind is most often from the south for 5.9 months, from October 3 to March 30, with a peak percentage of 70% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Joseph 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 Joseph for general outdoor tourist activities is from mid July to mid August, with a peak score in the last week of July.
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 Joseph for hot-weather activities is from mid July to mid August, with a peak score in the last week of July.
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 in Joseph typically lasts for 3.8 months (116 days), from around May 24 to around September 17, rarely starting before May 3 or after June 13, and rarely ending before August 30 or after October 5.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Joseph should appear around May 13, only rarely appearing before April 28 or after May 31.
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 3.0 months, from May 20 to August 22, with an average daily incident shortwave energy per square meter above 6.5 kWh. The brightest day of the year is July 13, with an average of 7.8 kWh.
The darker period of the year lasts for 3.6 months, from October 28 to February 15, with an average daily incident shortwave energy per square meter below 2.7 kWh. The darkest day of the year is December 23, with an average of 1.4 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Joseph are 45.354 deg latitude, -117.230 deg longitude, and 4,206 ft elevation.
The topography within 2 miles of Joseph contains very significant variations in elevation, with a maximum elevation change of 883 feet and an average elevation above sea level of 4,198 feet. Within 10 miles contains very significant variations in elevation (6,293 feet). Within 50 miles also contains extreme variations in elevation (8,940 feet).
The area within 2 miles of Joseph is covered by cropland (63%), grassland (20%), and shrubs (16%), within 10 miles by shrubs (33%) and trees (28%), and within 50 miles by shrubs (51%) and trees (29%).
This report illustrates the typical weather in Joseph, 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 Joseph.
For each station, the records are corrected for the elevation difference between that station and Joseph 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 Joseph is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Joseph and a given station.
The stations contributing to this reconstruction are: La Grande Municipal Airport (28%, 61 kilometers, west); Baker Municipal Airport (28%, 73 kilometers, southwest); McCall Airport (17%, 103 kilometers, southeast); Idaho County Airport (16%, 108 kilometers, northeast); and Lewiston–Nez Perce County Airport (11%, 115 kilometers, north).
Time zones for aiports and weather stations are provided by AskGeo.com .