January weather forecastOntario, OR
January
Weather in January
January, like December, in Ontario, Oregon, is a wintry winter month, with an average temperature fluctuating between 23.5°F (-4.7°C) and 36.1°F (2.3°C).Temperature
Ontario's coldest period falls in January and December, when the average high-temperatures ascend to 36.1°F (2.3°C).Humidity
With an average relative humidity of 82%, January is the most humid month.Rainfall
In Ontario, in January, during 9.3 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. In Ontario, during the entire year, the rain falls for 84.9 days and collects up to 9.29" (236mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Ontario, during January, snow falls for 6.3 days and regularly aggregates up to 3.46" (88mm) of snow. In Ontario, during the entire year, snow falls for 21.8 days and aggregates up to 12.56" (319mm) of snow.Daylight
In January, the average length of the day is 9h and 20min.On the first day of January, sunrise is at 8:22 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 5:56 pm MST.
Sunshine
The average sunshine in January is 5.2h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.Note: The UV index of 2 during January translates into the following guidance:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Ontario, OR
- Average high temperature in January: 36.1°F
The warmest month (with the highest average high temperature) is July (93.2°F).
The months with the lowest average high temperature are January and December (36.1°F).
- Average low temperature in January: 23.5°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is December (23°F).
Average pressure in January
Ontario, OR
- Average pressure in January: 30.24"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed in January
Ontario, OR
- Average wind speed in January: 3.9mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is January (3.9mph).
Average humidity in January
Ontario, OR
- Average humidity in January: 82%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (29%).
Average rainfall in January
Ontario, OR
- Average rainfall in January: 1.42"
The wettest month (with the highest rainfall) is December (1.57").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in January
Ontario, OR
- Average rainfall days in January: 9.3 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is August (1.8 days).
Average snowfall in January
Ontario, OR
- Average snowfall in January: 3.46"
The month with the highest snowfall is December (5.35").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Ontario, OR
- Average snowfall days in January: 6.3 days
The month with the highest number of snowfall days is December (7.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Ontario, OR
- Average daylight in January: 9h and 18min
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 January: 5h and 12min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in January
Ontario, OR
- Average sunshine days in January: 17.8 days
The month with the most sunshine days is July (27.7 days).
The month with the least sunshine days is February (15.2 days).
Average UV index in January
Ontario, OR
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Ontario, OR
- Average cloud cover in January: 44
The months with the most cloud cover are January and December (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in January
Ontario, OR
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
