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 beginning of January reveals an average high-temperature of a still chilly 46.9°F (8.3°C), showing minimal deviation from the previous month. During the month of January, an average low-temperature of 35.1°F (1.7°C) is recorded.Humidity
In January, the average relative humidity is 87%.Rainfall
In Monmouth, during January, the rain falls for 16.2 days and regularly aggregates up to 1.38" (35mm) of precipitation. Throughout the year, there are 144.6 rainfall days, and 10.04" (255mm) of precipitation is accumulated.Snowfall
January through March and December are months with snowfall. In Monmouth, during January, snow falls for 1 days and regularly aggregates up to 0.08" (2mm) of snow. Throughout the year, there are 4.5 snowfall days, and 0.91" (23mm) of snow is accumulated.Daylight
In Monmouth, the average length of the day in January is 9h and 16min.On the first day of January, sunrise is at 7:50 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 5:19 pm PST.
Sunshine
The average sunshine in January is 4.1h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: In January, the UV index of 2 transforms into the following advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. To guard against the harmful effects of the Sun, minimize exposure during midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in January?
How many hours of daylight does Monmouth have in January?
When are sunrise and sunset in January?
How many hours of sunshine does Monmouth have in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Monmouth, OR
- Average high temperature in January: 46.9°F
The warmest month (with the highest average high temperature) is August (80.8°F).
The month with the lowest average high temperature is December (44.2°F).
- Average low temperature in January: 35.1°F
The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).
Average pressure in January
Monmouth, OR
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in January
Monmouth, OR
- Average wind speed in January: 4.9mph
The windiest month (with the highest average wind speed) is March (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in January
Monmouth, OR
- Average humidity in January: 87%
The months with the highest relative humidity are February and December (88%).
The month with the lowest relative humidity is August (68%).
Average rainfall in January
Monmouth, OR
- Average rainfall in January: 1.38"
The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in January
Monmouth, OR
- Average rainfall days in January: 16.2 days
The month with the highest number of rainy days is March (17.8 days).
The month with the least rainy days is August (4 days).
Average snowfall in January
Monmouth, OR
- Average snowfall in January: 0.08"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in January
Monmouth, OR
- Average snowfall days in January: 1 days
The month with the highest number of snowfall days is February (1.8 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
Monmouth, OR
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January: 4h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in January
Monmouth, OR
- Average sunshine days in January: 11.4 days
The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is March (9.7 days).
Average UV index in January
Monmouth, OR
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Monmouth, OR
- Average cloud cover in January: 59
The months with the most cloud cover are February and March (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in January
Monmouth, OR
- Average visibility in January: 4mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
Monmouth, Oregon, USA
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