Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January brings the lowest temperatures, with an average high of 29.7°F (-1.3°C) and an average low of 20.8°F (-6.2°C).Humidity
The months with the highest humidity are January and February, with an average relative humidity of 83%.Rainfall
In Ontario, in January, it is raining for 8.5 days, with typically 2.05" (52mm) of accumulated precipitation. In Ontario, during the entire year, the rain falls for 167.9 days and collects up to 31.18" (792mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Ontario. In Ontario, during January, snow falls for 15.4 days and regularly aggregates up to 4.41" (112mm) of snow. In Ontario, during the entire year, snow falls for 62.3 days and aggregates up to 20.63" (524mm) of snow.Daylight
The average length of the day in January is 9h and 25min.On the first day of January in Ontario, sunrise is at 7:41 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:19 pm EST.
Sunshine
January has the least sunshine of the year in Ontario, New York, with an average of 2.6h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Ontario. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 1 during January morphs into the following directions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. To cut down UV radiation exposure by about half, sport a wide-brim hat. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Ontario?
How cold is January in Ontario?
What are the most humid months in Ontario?
What is the average humidity in January in Ontario?
How much does it rain in Ontario in January?
How many days does it snow in January in Ontario?
What is the average length of the day in January in Ontario?
When is the sunrise / sunset in January in Ontario?
What is the month with the least sunshine in Ontario?
How long on average sun shines in January in Ontario?
What are the months with the lowest UV index in Ontario?
What is the UV index intensity in January in Ontario?
Average temperature in January
Ontario, NY
- Average high temperature in January: 29.7°F
The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in January: 20.8°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in January
Ontario, NY
- Average pressure in January: 30.04"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Ontario, NY
- Average wind speed in January: 13.2mph
The windiest month (with the highest average wind speed) is January (13.2mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in January
Ontario, NY
- Average humidity in January: 83%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are August and September (75%).
Average rainfall in January
Ontario, NY
- Average rainfall in January: 2.05"
The wettest month (with the highest rainfall) is October (3.23").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in January
Ontario, NY
- Average rainfall days in January: 8.5 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in January
Ontario, NY
- Average snowfall in January: 4.41"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Ontario, NY
- Average snowfall days in January: 15.4 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Ontario, NY
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 2h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in January
Ontario, NY
- Average sunshine days in January: 7.4 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in January
Ontario, NY
- Average UV index in January: 1
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Ontario, NY
- Average cloud cover in January: 75
The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in January
Ontario, NY
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Ontario, New York, USA
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