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
Pleasant Hill's January showcases an average high-temperature of a still chilly 48.9°F (9.4°C), hardly distinct from December's 46°F (7.8°C). During January, Pleasant Hill experiences an average low-temperature of 35.2°F (1.8°C) at night.Humidity
The months with the highest humidity are January through March and December, with an average relative humidity of 86%.Rainfall
In Pleasant Hill, Oregon, in January, it is raining for 16.8 days, with typically 3.86" (98mm) of accumulated precipitation. In Pleasant Hill, Oregon, during the entire year, the rain falls for 158.1 days and collects up to 30.12" (765mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In January, in Pleasant Hill, it is snowing for 1.3 days. Throughout January, 0.75" (19mm) of snow is accumulated. In Pleasant Hill, during the entire year, snow falls for 6.6 days and aggregates up to 5" (127mm) of snow.Daylight
In January, the average length of the day is 9h and 21min.On the first day of January, sunrise is at 7:46 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:20 pm PST.
Sunshine
The average sunshine in January is 4.4h.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 health risk from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 2 in January translates into this advice:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in January?
What are the most humid months?
What is the average humidity in January?
How much does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
When is the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Pleasant Hill, OR
- Average high temperature in January: 48.9°F
The warmest month (with the highest average high temperature) is August (80.4°F).
The month with the lowest average high temperature is December (46°F).
- Average low temperature in January: 35.2°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (33.8°F).
Average pressure in January
Pleasant Hill, OR
- Average pressure in January: 30.12"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in January
Pleasant Hill, OR
- Average wind speed in January: 4.4mph
The windiest months (with the highest average wind speed) are January and March (4.4mph).
The calmest months (with the lowest average wind speed) are August and September (3.5mph).
Average humidity in January
Pleasant Hill, OR
- Average humidity in January: 86%
The months with the highest relative humidity are January, February, March and December (86%).
The month with the lowest relative humidity is August (69%).
Average rainfall in January
Pleasant Hill, OR
- Average rainfall in January: 3.86"
The wettest month (with the highest rainfall) is December (4.57").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in January
Pleasant Hill, OR
- Average rainfall days in January: 16.8 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in January
Pleasant Hill, OR
- Average snowfall in January: 0.75"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Pleasant Hill, OR
- Average snowfall days in January: 1.3 days
The month with the highest number of snowfall days is February (2.5 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
Pleasant Hill, OR
- Average daylight in January: 9h and 2min
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: 4h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in January
Pleasant Hill, OR
- Average sunshine days in January: 12.6 days
The month with the most sunshine days is August (25.6 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in January
Pleasant Hill, OR
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Pleasant Hill, OR
- Average cloud cover in January: 55
The month with the most cloud cover is March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in January
Pleasant Hill, OR
- Average visibility in January: 4mi
The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).
Pleasant Hill, Oregon, USA
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