Average Weather in Lewiston Orchards Idaho, United States
In Lewiston Orchards, the summers are short, hot, dry, and mostly clear and the winters are very cold and partly cloudy. Over the course of the year, the temperature typically varies from 30°F to 92°F and is rarely below 17°F or above 101°F.
Based on the tourism score, the best time of year to visit Lewiston Orchards for warm-weather activities is from early July to late August.
The hot season lasts for 2.6 months, from June 22 to September 10, with an average daily high temperature above 82°F. The hottest day of the year is August 2, with an average high of 92°F and low of 63°F.
The cold season lasts for 3.4 months, from November 12 to February 23, with an average daily high temperature below 50°F. The coldest day of the year is December 22, with an average low of 30°F and high of 39°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 Lewiston Orchards, 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 Lewiston Orchards begins around June 15 and lasts for 3.8 months, ending around October 8. On July 29, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 81% of the time, and overcast or mostly cloudy 19% of the time.
The cloudier part of the year begins around October 8 and lasts for 8.2 months, ending around June 15. On January 15, the cloudiest day of the year, the sky is overcast or mostly cloudy 65% of the time, and clear, mostly clear, or partly cloudy 35% 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 Lewiston Orchards varies throughout the year.
The wetter season lasts 8.0 months, from October 21 to June 21, with a greater than 23% chance of a given day being a wet day. The chance of a wet day peaks at 38% on November 28.
The drier season lasts 4.0 months, from June 21 to October 21. The smallest chance of a wet day is 8% on August 5.
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 35% on November 18.
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. Lewiston Orchards experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year in Lewiston Orchards. The most rain falls during the 31 days centered around November 22, with an average total accumulation of 2.2 inches.
The least rain falls around August 2, with an average total accumulation of 0.5 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. Lewiston Orchards experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 2.6 months, from November 27 to February 15, 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 0.3 inches.
The snowless period of the year lasts for 9.4 months, from February 15 to November 27. The least snow falls around July 15, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Lewiston Orchards varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 35 minutes of daylight; the longest day is June 21, with 15 hours, 49 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 4:54 AM on June 15, and the latest sunrise is 2 hours, 37 minutes later at 7:32 AM on November 3. The earliest sunset is at 4:01 PM on December 10, and the latest sunset is 4 hours, 43 minutes later at 8:44 PM on June 25.
Daylight saving time (DST) is observed in Lewiston Orchards 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 Lewiston Orchards, 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 Lewiston Orchards experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 7.6 months, from October 24 to June 12, with average wind speeds of more than 6.3 miles per hour. The windiest day of the year is March 27, with an average hourly wind speed of 7.1 miles per hour.
The calmer time of year lasts for 4.4 months, from June 12 to October 24. The calmest day of the year is August 12, with an average hourly wind speed of 5.6 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Lewiston Orchards varies throughout the year.
The wind is most often from the west for 7.8 months, from March 4 to October 28, with a peak percentage of 56% on June 21. The wind is most often from the south for 4.2 months, from October 28 to March 4, with a peak percentage of 52% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Lewiston Orchards 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 Lewiston Orchards 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 Lewiston Orchards 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 Lewiston Orchards typically lasts for 7.0 months (213 days), from around April 1 to around October 31, rarely starting before March 3 or after April 25, and rarely ending before October 10 or after November 24.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Lewiston Orchards should appear around April 10, only rarely appearing before March 28 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 3.1 months, from May 20 to August 22, with an average daily incident shortwave energy per square meter above 6.3 kWh. The brightest day of the year is July 15, with an average of 7.6 kWh.
The darker period of the year lasts for 3.7 months, from October 27 to February 17, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest day of the year is December 23, with an average of 1.2 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Lewiston Orchards are 46.380 deg latitude, -116.975 deg longitude, and 1,358 ft elevation.
The topography within 2 miles of Lewiston Orchards contains significant variations in elevation, with a maximum elevation change of 702 feet and an average elevation above sea level of 1,346 feet. Within 10 miles contains significant variations in elevation (2,336 feet). Within 50 miles contains large variations in elevation (5,741 feet).
The area within 2 miles of Lewiston Orchards is covered by artificial surfaces (44%), grassland (28%), and cropland (18%), within 10 miles by cropland (42%) and grassland (35%), and within 50 miles by shrubs (33%) and cropland (32%).
This report illustrates the typical weather in Lewiston Orchards, 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 Lewiston Orchards.
For each station, the records are corrected for the elevation difference between that station and Lewiston Orchards 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 Lewiston Orchards is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Lewiston Orchards and a given station.
The stations contributing to this reconstruction are: Lewiston–Nez Perce County Airport (97%, 3.2 kilometers, west); Pullman–Moscow Regional Airport (1.8%, 42 kilometers, north); and Idaho County Airport (0.7%, 82 kilometers, southeast).
Time zones for aiports and weather stations are provided by AskGeo.com .