Average Weather in Lumby Canada
In Lumby, the summers are warm and partly cloudy and the winters are freezing, snowy, and mostly cloudy. Over the course of the year, the temperature typically varies from 20°F to 82°F and is rarely below 3°F or above 91°F.
Based on the tourism score, the best time of year to visit Lumby for warm-weather activities is from mid July to mid August.
The warm season lasts for 3.0 months, from June 9 to September 8, with an average daily high temperature above 71°F. The hottest day of the year is August 3, with an average high of 82°F and low of 56°F.
The cold season lasts for 3.4 months, from November 14 to February 26, with an average daily high temperature below 39°F. The coldest day of the year is December 30, with an average low of 20°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 Lumby, 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 Lumby begins around June 9 and lasts for 4.0 months, ending around October 9. On August 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 71% of the time, and overcast or mostly cloudy 29% of the time.
The cloudier part of the year begins around October 9 and lasts for 8.0 months, ending around June 9. On January 9, the cloudiest day of the year, the sky is overcast or mostly cloudy 71% of the time, and clear, mostly clear, or partly cloudy 29% 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 Lumby varies throughout the year.
The wetter season lasts 8.7 months, from October 11 to July 2, with a greater than 24% chance of a given day being a wet day. The chance of a wet day peaks at 34% on November 10.
The drier season lasts 3.3 months, from July 2 to October 11. The smallest chance of a wet day is 14% on August 10.
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 Lumby changes throughout the year.
Rain alone is the most common for 10.0 months, from February 4 to December 5. The highest chance of a day with rain alone is 30% on October 29.
Snow alone is the most common for 2.0 months, from December 5 to February 4. The highest chance of a day with snow alone is 17% on January 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. Lumby experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 10 months, from February 11 to December 16, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 10, with an average total accumulation of 1.8 inches.
The rainless period of the year lasts for 1.8 months, from December 16 to February 11. The least rain falls around January 4, 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. Lumby experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 4.9 months, from October 27 to March 22, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 1, with an average total liquid-equivalent accumulation of 1.0 inches.
The snowless period of the year lasts for 7.1 months, from March 22 to October 27. The least snow falls around July 22, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Lumby varies extremely over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 2 minutes of daylight; the longest day is June 21, with 16 hours, 25 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 4:44 AM on June 16, and the latest sunrise is 3 hours, 11 minutes later at 7:55 AM on December 31. The earliest sunset is at 3:52 PM on December 12, and the latest sunset is 5 hours, 18 minutes later at 9:10 PM on June 25.
Daylight saving time (DST) is observed in Lumby 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 Lumby, 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
Average Wind Speed
The predominant average hourly wind direction in Lumby varies throughout the year.
The wind is most often from the west for 5.2 months, from April 19 to September 26, with a peak percentage of 53% on June 29. The wind is most often from the south for 6.8 months, from September 26 to April 19, with a peak percentage of 40% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Lumby 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 Lumby for general outdoor tourist activities is from mid July to mid 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 Lumby for hot-weather activities is from mid July to mid August, with a peak score in the first 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 in Lumby typically lasts for 5.5 months (167 days), from around April 28 to around October 12, rarely starting before April 7 or after May 16, and rarely ending before September 22 or after October 29.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Lumby should appear around May 7, only rarely appearing before April 27 or after May 20.
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 3.4 months, from May 8 to August 20, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is July 17, with an average of 7.0 kWh.
The darker period of the year lasts for 3.7 months, from October 24 to February 15, with an average daily incident shortwave energy per square meter below 2.1 kWh. The darkest day of the year is December 23, with an average of 0.9 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Lumby are 50.250 deg latitude, -118.969 deg longitude, and 1,936 ft elevation.
The topography within 2 miles of Lumby contains very significant variations in elevation, with a maximum elevation change of 1,752 feet and an average elevation above sea level of 2,057 feet. Within 10 miles contains very significant variations in elevation (4,852 feet). Within 50 miles also contains extreme variations in elevation (8,579 feet).
The area within 2 miles of Lumby is covered by trees (29%), cropland (25%), sparse vegetation (25%), and shrubs (13%), within 10 miles by trees (76%) and sparse vegetation (10%), and within 50 miles by trees (75%) and sparse vegetation (11%).
This report illustrates the typical weather in Lumby, 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 Lumby.
For each station, the records are corrected for the elevation difference between that station and Lumby 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 Lumby is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Lumby and a given station.
The stations contributing to this reconstruction are: Vernon, B. C. (77%, 16 kilometers, west); Salmon Arm Automatic Weather Reporting System (14%, 55 kilometers, northwest); and Nakusp Automatic Weather Reporting System (9%, 82 kilometers, east).
Time zones for aiports and weather stations are provided by AskGeo.com .