Average Weather in Lumby Canada

1. World
2. Canada
3. British Columbia
4. Lumby

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.

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 3.5 months, from November 14 to February 27, with an average daily high temperature below 40°F. The coldest day of the year is December 30, with an average low of 20°F and high of 29°F.

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.

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.

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 1, 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 1 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.

Rainfall

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.

Snowfall

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 4.8 months, from October 28 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 7.2 months, from March 22 to October 28. The least snow falls around July 22, with an average total liquid-equivalent accumulation of 0.0 inches.

The length of the day in Lumby varies extremely over the course of the year. In 2017, 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.

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 30. The earliest sunset is at 3:52 PM on December 11, 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 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

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.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The predominant average hourly wind direction in Lumby varies throughout the year.

The wind is most often from the west for 5.3 months, from April 18 to September 27, with a peak percentage of 55% on June 29. The wind is most often from the south for 6.7 months, from September 27 to April 18, with a peak percentage of 42% on January 1.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

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 3.5 months, from May 7 to August 21, with an average daily incident shortwave energy per square meter above 5.7 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 23 to February 15, with an average daily incident shortwave energy per square meter below 2.2 kWh. The darkest day of the year is December 23, with an average of 0.9 kWh.

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).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.

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.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.