Average Weather in Armstrong Canada
In Armstrong, the summers are short, warm, and partly cloudy and the winters are freezing, dry, and mostly cloudy. Over the course of the year, the temperature typically varies from 21°F to 84°F and is rarely below 4°F or above 93°F.
Based on the tourism score, the best time of year to visit Armstrong for warm-weather activities is from early July to mid August.
The warm season lasts for 2.9 months, from June 10 to September 7, with an average daily high temperature above 73°F. The hottest day of the year is August 4, with an average high of 84°F and low of 57°F.
The cold season lasts for 3.4 months, from November 15 to February 26, with an average daily high temperature below 41°F. The coldest day of the year is January 1, with an average low of 21°F and high of 30°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 Armstrong, 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 Armstrong begins around May 31 and lasts for 4.4 months, ending around October 11. On August 1, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 70% of the time, and overcast or mostly cloudy 30% of the time.
The cloudier part of the year begins around October 11 and lasts for 7.6 months, ending around May 31. On January 9, the cloudiest day of the year, the sky is overcast or mostly cloudy 73% of the time, and clear, mostly clear, or partly cloudy 27% 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 Armstrong varies throughout the year.
The wetter season lasts 8.7 months, from October 13 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 33% on November 10.
The drier season lasts 3.3 months, from July 2 to October 13. 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 Armstrong changes throughout the year.
Rain alone is the most common for 11 months, from January 23 to December 14. The highest chance of a day with rain alone is 30% on October 29.
Snow alone is the most common for 1.3 months, from December 14 to January 23. The highest chance of a day with snow alone is 14% on January 3.
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. Armstrong experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year in Armstrong. The most rain falls during the 31 days centered around June 12, with an average total accumulation of 1.7 inches.
The least rain falls around January 4, 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. Armstrong experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 4.5 months, from November 2 to March 17, 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 0.8 inches.
The snowless period of the year lasts for 7.5 months, from March 17 to November 2. The least snow falls around July 18, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Armstrong varies extremely over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 0 minutes of daylight; the longest day is June 21, with 16 hours, 27 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, 13 minutes later at 7:57 AM on December 31. The earliest sunset is at 3:52 PM on December 12, and the latest sunset is 5 hours, 20 minutes later at 9:12 PM on June 25.
Daylight saving time (DST) is observed in Armstrong 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 Armstrong, 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 Armstrong varies throughout the year.
The wind is most often from the south for 2.0 months, from February 26 to April 27 and for 2.2 months, from September 23 to November 28, with a peak percentage of 46% on November 3. The wind is most often from the west for 4.9 months, from April 27 to September 23, with a peak percentage of 47% on June 23. The wind is most often from the east for 2.9 months, from November 28 to February 26, with a peak percentage of 44% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Armstrong 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 Armstrong 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 Armstrong 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 Armstrong typically lasts for 5.6 months (171 days), from around April 24 to around October 12, rarely starting before April 3 or after May 14, and rarely ending before September 23 or after October 30.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Armstrong should appear around May 1, only rarely appearing before April 21 or after May 13.
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 6 to August 20, 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 6.9 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 0.8 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Armstrong are 50.450 deg latitude, -119.202 deg longitude, and 1,342 ft elevation.
The topography within 2 miles of Armstrong contains very significant variations in elevation, with a maximum elevation change of 1,158 feet and an average elevation above sea level of 1,314 feet. Within 10 miles contains very significant variations in elevation (5,066 feet). Within 50 miles also contains extreme variations in elevation (8,553 feet).
The area within 2 miles of Armstrong is covered by sparse vegetation (42%), grassland (23%), cropland (11%), and trees (11%), within 10 miles by trees (56%) and sparse vegetation (18%), and within 50 miles by trees (71%) and sparse vegetation (13%).
This report illustrates the typical weather in Armstrong, 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 Armstrong.
For each station, the records are corrected for the elevation difference between that station and Armstrong 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 Armstrong is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Armstrong and a given station.
The stations contributing to this reconstruction are: Vernon, B. C. (49%, 26 kilometers, south); Salmon Arm Automatic Weather Reporting System (44%, 28 kilometers, north); and Nakusp Automatic Weather Reporting System (7%, 100 kilometers, east).
Time zones for aiports and weather stations are provided by AskGeo.com .