January weather forecastNapoleon, OH
January
Weather in January
January, the same as December, in Napoleon, Ohio, is another subzero cold winter month, with an average temperature fluctuating between 30.6°F (-0.8°C) and 19.2°F (-7.1°C).Temperature
Napoleon's coldest month, January, registers temperatures that range from a high of 30.6°F (-0.8°C) to a low of 19.2°F (-7.1°C).Humidity
The months with the highest humidity are January and February, with an average relative humidity of 84%.Rainfall
In Napoleon, in January, it is raining for 8.8 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, there are 165.5 rainfall days, and 27.24" (692mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. In Napoleon, in January, during 14.7 snowfall days, 3.94" (100mm) of snow is typically accumulated. Throughout the year, there are 52.7 snowfall days, and 15.24" (387mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 35min.On the first day of the month, sunrise is at 8:02 am and sunset at 5:17 pm. On the last day of January, sunrise is at 7:48 am and sunset at 5:50 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 3.3h of sunshine.UV index
In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents 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:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Napoleon, OH
- Average high temperature in January: 30.6°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in January: 19.2°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in January
Napoleon, OH
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Napoleon, OH
- Average wind speed in January: 10.3mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in January
Napoleon, OH
- Average humidity in January: 84%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Napoleon, OH
- Average rainfall in January: 1.73"
The wettest month (with the highest rainfall) is April (3.15").
The driest month (with the least rainfall) is December (1.61").
Average rainfall days in January
Napoleon, OH
- Average rainfall days in January: 8.8 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (8.6 days).
Average snowfall in January
Napoleon, OH
- Average snowfall in January: 3.94"
The month with the highest snowfall is February (4.09").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Napoleon, OH
- Average snowfall days in January: 14.7 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Napoleon, OH
- Average daylight in January: 9h and 36min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 3h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in January
Napoleon, OH
- Average sunshine days in January: 10.7 days
The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in January
Napoleon, OH
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Napoleon, OH
- Average cloud cover in January: 65
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in January
Napoleon, OH
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, August and September (5mi).
