December weather forecastGuelph, Canada
December
Weather in December
Accompanied by falling temperatures averaging between -4.7°C (23.5°F) to -0.1°C (31.8°F), December conveys the arrival of winter in Guelph, Canada, in full force. The colder weather comes hand-in-hand with a significant amount of snowfall, turning the landscape into a winter wonderland. The daylight is at its shortest, with the longest nights in the year making their appearance. Cloud coverage is abundant, limiting the sun's rays and adding to the cold spell. As the year concludes, the city is bundled up, bearing the winter's chill and awaiting the New Year.Temperature
Guelph's progression into December includes a drop in the average high-temperature, from an icy 5.7°C (42.3°F) in November to a freezing cold -0.1°C (31.8°F). Nights during December maintain a steady temperature, averaging at a still subzero cold -4.7°C (23.5°F).Humidity
The average relative humidity in December is 86%.Rainfall
In December, the rain falls for 10.4 days. Throughout December, 50mm (1.97") of precipitation is accumulated. Throughout the year, there are 172.5 rainfall days, and 727mm (28.62") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Guelph, in December, during 17.8 snowfall days, 137mm (5.39") of snow is typically accumulated. Throughout the year, there are 82 snowfall days, and 703mm (27.68") of snow is accumulated.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year in Guelph.On the first day of the month, sunrise is at 7:34 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:54 am and sunset at 4:54 pm EST.
Sunshine
In December, the average sunshine is 2.7h.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Guelph, Canada
- Average high temperature in December: -0.1°C
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-3.8°C).
- Average low temperature in December: -4.7°C
The month with the highest average low temperature is July (15°C).
The coldest month (with the lowest average low temperature) is January (-9.4°C).
Average pressure in December
Guelph, Canada
- Average pressure in December: 1017.5mbar
The month with the highest atmospheric pressure is March (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.2mbar).
Average wind speed in December
Guelph, Canada
- Average wind speed in December: 16.8km/h
The windiest month (with the highest average wind speed) is January (17.6km/h).
The calmest month (with the lowest average wind speed) is July (10.8km/h).
Average humidity in December
Guelph, Canada
- Average humidity in December: 86%
The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in December
Guelph, Canada
- Average rainfall in December: 50mm
The wettest month (with the highest rainfall) is May (75mm).
The driest month (with the least rainfall) is September (41mm).
Average rainfall days in December
Guelph, Canada
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in December
Guelph, Canada
- Average snowfall in December: 137mm
The month with the highest snowfall is February (162mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Guelph, Canada
- Average snowfall days in December: 17.8 days
The month with the highest number of snowfall days is January (18.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Guelph, Canada
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 2h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in December
Guelph, Canada
- Average sunshine days in December: 7.5 days
The month with the most sunshine days is September (11.5 days).
The months with the least sunshine days are January and February (7.3 days).
Average UV index in December
Guelph, Canada
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Guelph, Canada
- Average cloud cover in December: 71
The month with the most cloud cover is January (Cloud cover 73).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in December
Guelph, Canada
- Average visibility in December: 8km
The months with the highest visibility are April, May, June, July, August and October (9km).
The months with the lowest visibility are January, February, March, September, November and December (8km).
