Average Weather on September 29 at Churchill Airport Canada
On September 29, the temperature at Churchill Airport typically ranges from 37°F to 42°F and is rarely below 28°F or above 54°F.
For reference, on July 23, the hottest day of the year, temperatures at Churchill Airport typically range from 49°F to 66°F, while on January 21, the coldest day of the year, they range from -20°F to -6°F.
The coolest time of the day is from 1:45 AM to 9:00 AM, with the coldest at 5:30 AM, at which time the temperature is below 40°F three days out of four, and below 45°F nine days out of ten.
The warmest time of the day is from 12:30 PM to 6:15 PM, with the hottest at 3:30 PM, at which time the temperature is above 37°F three days out of four, and above 32°F nine days out of ten.
The day has gained half its heat by 10:45 AM and lost it again by 8:00 PM.
Average Temperature on September 29
The figure below shows you a compact characterization of the range of temperatures experienced on September 29 throughout the historical record. The horizontal axis is the time of day and the colored stacked areas indicate the percentage of hours spent in various temperature bands.
Temperature Bands on September 29
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
Compared to September 29 (excluding 30 days before and after), May 30 has the most similar daily average high and low temperatures.
The average percentage of the sky covered by clouds at Churchill Airport on September 29 varies over the course of the day.
The cloudiest time of day is around 5:30 AM, at which time the chance of overcast or mostly cloudy conditions is 65%.
The clearest time of day is around 1:30 PM, at which time the chance of clear, mostly clear, or partly cloudy conditions is 43%.
For reference, on January 30, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 87%, while on July 22, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 50%.
Cloud Cover Categories on September 29
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
On average, there is a 25% chance that more than 0.04 inches of total precipitation will fall at Churchill Airport throughout the day on September 29, of which 88% is expected to be rain alone, 1% to be snow alone, and 11% to be a mixture of snow and rain.
For reference, the year's highest daily chance of precipitation is 29% on September 5, and its lowest chance is 5% on January 10.
For those 25% of years with precipitation on September 29, the chart below shows when throughout the day that precipitation is more or less likely to occur, excluding hourly accumulations of less than 0.01 inches. If precipitation were equally likely throughout the day, all hours would report 4.2% (100% divided by 24 hours).
Precipitation is most likely between 2 PM and 3 PM, and least likely between 8 PM and 9 PM.
Hourly Share of Precipitation on September 29
At Churchill Airport on Tuesday, September 29, 2020, the Sun rises at 7:17 AM and sets 11 hours, 36 minutes later, at 6:53 PM. Solar noon is at 1:05 PM.
For reference, on June 20, the longest day of the year, the Sun rises at 4:05 AM and sets 18 hours, 25 minutes later, at 10:30 PM, while on December 21, the shortest day of the year, it rises at 9:07 AM and sets 6 hours, 15 minutes later, at 3:22 PM.
Civil twilight, the period before the Sun has risen or after the Sun has set during which time it is possible to engage in most outdoor activities without artificial lighting, begins and ends 40 minutes before sunrise and after sunset, at 6:37 AM and 7:33 PM respectively.
Nautical twilight, during which time it is possible to clearly discern the horizon (e.g., for navigational purposes), begins and ends 1 hour, 27 minutes before sunrise and after sunset, at 5:50 AM and 8:20 PM respectively.
Astronomical twilight, outside of which it is possible to make the most sensitive of astronomical observations, begins and ends 2 hours, 16 minutes before sunrise and after sunset, at 5:01 AM and 9:09 PM respectively.
Solar Elevation on September 29, 2020
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.
Muggy conditions are essentially unheard-of at Churchill Airport on September 29.
Humidity Comfort Levels on September 29
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 average hourly wind speed at Churchill Airport on September 29 varies throughout the day, with a daily average of 13.8 miles per hour.
The windiest time of day is around 12:15 PM, with an average hourly wind speed of 15.1 miles per hour, mostly staying between 10.5 miles per hour and 19.2 miles per hour, and rarely falling below 6.8 miles per hour or exceeding 23.9 miles per hour.
The calmest time of day is around 6:45 PM, with an average hourly wind speed of 13.0 miles per hour, mostly staying between 7.9 miles per hour and 17.1 miles per hour, and rarely falling below 5.1 miles per hour or exceeding 22.3 miles per hour.
For reference, on November 10, the windiest day of the year, the daily average wind speed is 14.7 miles per hour, while on July 21, the calmest day of the year, the daily average wind speed is 9.9 miles per hour.
Wind Speed on September 29
Over the entire course of September 29 at Churchill Airport, the hourly average wind direction, in order of prevalence, is from the north (35%), west (29%), south (22%), and east (14%).
Wind Direction on September 29
Churchill Airport is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water. The average surface water temperature does not change appreciably over the course of the day, so this section does not include a chart.
The average surface water temperature on September 29 at Churchill Airport is 42°F, mostly staying between 41°F and 44°F, and rarely falling below 39°F or exceeding 45°F.
For reference, the year's highest average is 48°F on August 21, and its lowest average is 29°F on February 6.
Shortwave Solar Power
This section discusses the incident shortwave solar power 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 peak incident shortwave solar power per square meter is 0.31 kilowatts at around 1:15 PM.
In contrast, the corresponding value on June 5, the brightest day of the year, is 0.63 kilowatts at around 12:15 PM. The corresponding value on December 21, the darkest day of the year, is 0.07 kilowatts at around 11:15 AM.
Shortwave Solar Power on September 29
For the purposes of this report, the geographical coordinates of Churchill Airport are 58.741 deg latitude, -94.073 deg longitude, and 56 ft elevation.
The topography within 2 miles of Churchill Airport contains only modest variations in elevation, with a maximum elevation change of 102 feet and an average elevation above sea level of 47 feet. Within 10 miles also contains only modest variations in elevation (157 feet). Within 50 miles also contains only modest variations in elevation (364 feet).
The area within 2 miles of Churchill Airport is covered by sparse vegetation (48%), trees (21%), and grassland (12%), within 10 miles by water (47%) and trees (26%), and within 50 miles by water (45%) and sparse vegetation (24%).
This report illustrates the typical weather at Churchill Airport, 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
Churchill Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.There are no other weather stations in our network within 200 kilometers of this location. Consequently, in the case of missing or erroneous measurements from this station, we fall back on NASA's MERRA-2 modern-era reanalysis , adjusted according to typical seasonal and diurnal differences between this station and the wide-area MERRA-2 reconstructed values.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports 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.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.