Average Weather in Liberty Lake Washington, United States
In Liberty Lake, the summers are short, warm, dry, and mostly clear and the winters are very cold and mostly cloudy. Over the course of the year, the temperature typically varies from 25°F to 88°F and is rarely below 11°F or above 97°F.
Based on the tourism score, the best time of year to visit Liberty Lake for warm-weather activities is from early July to mid August.
The hot season lasts for 2.7 months, from June 19 to September 11, with an average daily high temperature above 77°F. The hottest day of the year is August 1, with an average high of 88°F and low of 57°F.
The cold season lasts for 3.4 months, from November 12 to February 25, with an average daily high temperature below 45°F. The coldest day of the year is December 29, with an average low of 25°F and high of 34°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 Liberty Lake, 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 in Liberty Lake begins around June 6 and lasts for 4.1 months, ending around October 9. On July 31, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 79% of the time, and overcast or mostly cloudy 21% of the time.
The cloudier part of the year begins around October 9 and lasts for 7.9 months, ending around June 6. On January 10, the cloudiest day of the year, the sky is overcast or mostly cloudy 74% of the time, and clear, mostly clear, or partly cloudy 26% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Liberty Lake varies significantly throughout the year.
The wetter season lasts 7.7 months, from October 18 to June 10, with a greater than 24% chance of a given day being a wet day. The chance of a wet day peaks at 40% on November 20.
The drier season lasts 4.3 months, from June 10 to October 18. The smallest chance of a wet day is 8% 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 36% on November 9.
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. Liberty Lake experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in Liberty Lake. The most rain falls during the 31 days centered around November 19, with an average total accumulation of 2.9 inches.
The least rain falls around August 8, 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. Liberty Lake experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 4.1 months, from November 8 to March 12, 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 0.6 inches.
The snowless period of the year lasts for 7.9 months, from March 12 to November 8. The least snow falls around July 16, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Liberty Lake varies significantly over the course of the year. In 2020, the shortest day is December 21, with 8 hours, 25 minutes of daylight; the longest day is June 20, with 16 hours, 0 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 4:49 AM on June 15, and the latest sunrise is 2 hours, 47 minutes later at 7:36 AM on December 31. The earliest sunset is at 3:56 PM on December 10, and the latest sunset is 4 hours, 54 minutes later at 8:50 PM on June 24.
Daylight saving time (DST) is observed in Liberty Lake during 2020, starting in the spring on March 8, lasting 7.8 months, and ending in the fall on November 1.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Liberty Lake, 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
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Liberty Lake does not vary significantly over the course of the year, remaining within 0.5 miles per hour of 5.7 miles per hour throughout.
Average Wind Speed
The predominant average hourly wind direction in Liberty Lake varies throughout the year.
The wind is most often from the west for 2.4 weeks, from April 25 to May 12 and for 2.8 months, from July 2 to September 27, with a peak percentage of 41% on August 26. The wind is most often from the south for 1.7 months, from May 12 to July 2 and for 6.9 months, from September 27 to April 25, with a peak percentage of 40% on June 10.
Best Time of Year to Visit
To characterize how pleasant the weather is in Liberty Lake 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 Liberty Lake for general outdoor tourist activities is from early 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 Liberty Lake 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 Liberty Lake typically lasts for 5.6 months (170 days), from around April 26 to around October 13, rarely starting before April 6 or after May 16, and rarely ending before September 23 or after November 2.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Liberty Lake should appear around April 25, only rarely appearing before April 13 or after May 10.
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 17 to August 20, with an average daily incident shortwave energy per square meter above 6.2 kWh. The brightest day of the year is July 14, with an average of 7.5 kWh.
The darker period of the year lasts for 3.8 months, from October 24 to February 19, with an average daily incident shortwave energy per square meter below 2.3 kWh. The darkest day of the year is December 25, with an average of 1.0 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Liberty Lake are 47.676 deg latitude, -117.118 deg longitude, and 2,067 ft elevation.
The topography within 2 miles of Liberty Lake contains significant variations in elevation, with a maximum elevation change of 702 feet and an average elevation above sea level of 2,082 feet. Within 10 miles contains significant variations in elevation (3,366 feet). Within 50 miles also contains extreme variations in elevation (5,049 feet).
The area within 2 miles of Liberty Lake is covered by cropland (35%), artificial surfaces (26%), grassland (21%), and shrubs (18%), within 10 miles by shrubs (43%) and trees (23%), and within 50 miles by trees (34%) and shrubs (28%).
This report illustrates the typical weather in Liberty Lake, 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 Liberty Lake.
For each station, the records are corrected for the elevation difference between that station and Liberty Lake 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 Liberty Lake is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Liberty Lake and a given station.
The stations contributing to this reconstruction are: Felts Field (65%, 15 kilometers, west); Coeur D'Alene Air Terminal (31%, 25 kilometers, northeast); and Pullman–Moscow Regional Airport (3.8%, 104 kilometers, south).
Time zones for aiports and weather stations are provided by AskGeo.com .