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
Forest Grove's January weather, marked by an average high temperature of 43°F (6.1°C) and an average low temperature of 29.3°F (-1.5°C), is the coldest in the year.Humidity
In January, the average relative humidity is 77%.Rainfall
In Forest Grove, in January, during 12 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. In Forest Grove, Tennessee, during the entire year, the rain falls for 174.6 days and collects up to 37.68" (957mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Forest Grove, in January, snow falls for 4.8 days, with typically accumulated 0.87" (22mm) of snow. Throughout the year, there are 14.9 snowfall days, and 4.06" (103mm) of snow is accumulated.Daylight
In Forest Grove, the average length of the day in January is 10h and 1min.On the first day of the month, sunrise is at 6:58 am and sunset at 4:42 pm. On the last day of January, sunrise is at 6:49 am and sunset at 5:12 pm CST.
Sunshine
The average sunshine in January is 4.5h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 in January converts into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold does it get in January?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January in Forest Grove?
How many hours of sunshine does Forest Grove have in January?
What are the months with the lowest UV index?
What is the UV index reading in January in Forest Grove?
Average temperature in January
Forest Grove, TN
- Average high temperature in January: 43°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (43°F).
- Average low temperature in January: 29.3°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).
Average pressure in January
Forest Grove, TN
- Average pressure in January: 30.17"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in January
Forest Grove, TN
- Average wind speed in January: 8.4mph
The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in January
Forest Grove, TN
- Average humidity in January: 77%
The months with the highest relative humidity are March, May and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Forest Grove, TN
- Average rainfall in January: 2.4"
The wettest month (with the highest rainfall) is July (4.37").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days in January
Forest Grove, TN
- Average rainfall days in January: 12 days
The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in January
Forest Grove, TN
- Average snowfall in January: 0.87"
The month with the highest snowfall is February (1.1").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Forest Grove, TN
- Average snowfall days in January: 4.8 days
The month with the highest number of snowfall days is January (4.8 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
Forest Grove, TN
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in January
Forest Grove, TN
- Average sunshine days in January: 15.7 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in January
Forest Grove, TN
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in January
Forest Grove, TN
- Average cloud cover in January: 53
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in January
Forest Grove, TN
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Forest Grove, Tennessee, USA
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