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
The advent of January reveals an average high-temperature of a still cold 39.9°F (4.4°C), showing minimal difference from the prior month. January nights observe an average temperature dip to a freezing cold 29.7°F (-1.3°C).Humidity
The most humid month is January, with an average relative humidity of 79%.Rainfall
In Umatilla, during January, the rain falls for 11.3 days and regularly aggregates up to 0.98" (25mm) of precipitation. In Umatilla, Oregon, during the entire year, the rain falls for 106.1 days and collects up to 7.76" (197mm) of precipitation.Snowfall
January through March, September, November and December are months with snowfall in Umatilla. In Umatilla, in January, during 2.3 snowfall days, 1.06" (27mm) of snow is typically accumulated. In Umatilla, Oregon, during the entire year, snow falls for 10.3 days and aggregates up to 6.02" (153mm) of snow.Daylight
In Umatilla, the average length of the day in January is 9h and 9min.On the first day of January in Umatilla, Oregon, sunrise is at 7:38 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:00 pm PST.
Sunshine
January and December, with an average of 5.4h of sunshine, are months with the least sunshine in Umatilla.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 value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: A typical high UV index of 2 in January suggests the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. To protect against the Sun's most potent rays, avoid direct exposure around midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
How cold is it in Umatilla in January?
What is the most humid month in Umatilla?
What is the average humidity in January in Umatilla?
How many days does it rain in January in Umatilla?
How much does it snow in Umatilla in January?
How many hours of daylight does Umatilla have in January?
When are sunrise and sunset in January in Umatilla?
What are the months with the least sunshine in Umatilla?
How many hours of sunshine does Umatilla have in January?
What is the month with the lowest UV index in Umatilla?
How high is the UV index in January in Umatilla?
Average temperature in January
Umatilla, OR
- Average high temperature in January: 39.9°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is December (38.7°F).
- Average low temperature in January: 29.7°F
The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).
Average pressure in January
Umatilla, OR
- Average pressure in January: 30.19"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in January
Umatilla, OR
- Average wind speed in January: 6.6mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is December (6.2mph).
Average humidity in January
Umatilla, OR
- Average humidity in January: 79%
The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are July and August (36%).
Average rainfall in January
Umatilla, OR
- Average rainfall in January: 0.98"
The wettest month (with the highest rainfall) is March (1.02").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in January
Umatilla, OR
- Average rainfall days in January: 11.3 days
The month with the highest number of rainy days is March (13.1 days).
The month with the least rainy days is July (3.8 days).
Average snowfall in January
Umatilla, OR
- Average snowfall in January: 1.06"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in January
Umatilla, OR
- Average snowfall days in January: 2.3 days
The month with the highest number of snowfall days is December (3.2 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in January /
Average sunshine in January
Umatilla, OR
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January: 5h and 2min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in January
Umatilla, OR
- Average sunshine days in January: 15.7 days
The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is February (14 days).
Average UV index in January
Umatilla, 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
Umatilla, 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 9).
Average visibility in January
Umatilla, OR
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Umatilla, Oregon, USA
Weather forecast for your location
2. Allow the app to use your location
