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 month of January sees the lowest average temperatures, reaching 33.4°F (0.8°C) at the peak and 21.7°F (-5.7°C) at the low.Humidity
January is the most humid month in Jamestown, with an average relative humidity of 83%.Rainfall
In January, the rain falls for 10.3 days. Throughout January, 2.48" (63mm) of precipitation is accumulated. In Jamestown, during the entire year, the rain falls for 169.3 days and collects up to 32.99" (838mm) of precipitation.Snowfall
Months with snowfall in Jamestown are January through May, October through December. In Jamestown, in January, snow falls for 12.2 days, with typically accumulated 3.31" (84mm) of snow. Throughout the year, there are 43.7 snowfall days, and 14.45" (367mm) of snow is accumulated.Daylight
In Jamestown, the average length of the day in January is 9h and 45min.On the first day of January in Jamestown, Ohio, sunrise is at 7:55 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:52 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 3.6h of sunshine.UV index
The months with the lowest UV index in Jamestown are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A daily high UV index of 2 in January leads to these guidelines:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Jamestown?
How cold is January in Jamestown?
What is the most humid month in Jamestown?
What is the average humidity in January in Jamestown?
How many days does it rain in January in Jamestown?
How many days does it snow in January in Jamestown?
How many hours of daylight does Jamestown have in January?
What time are sunrise and sunset in January in Jamestown?
What is the month with the least sunshine in Jamestown?
How long on average sun shines in January in Jamestown?
What is the month with the lowest UV index in Jamestown?
What is the UV index reading in January in Jamestown?
Average temperature in January
Jamestown, OH
- Average high temperature in January: 33.4°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in January: 21.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in January
Jamestown, OH
- Average pressure in January: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Jamestown, OH
- Average wind speed in January: 10.3mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in January
Jamestown, OH
- Average humidity in January: 83%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in January
Jamestown, OH
- Average rainfall in January: 2.48"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in January
Jamestown, OH
- Average rainfall days in January: 10.3 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is February (9.4 days).
Average snowfall in January
Jamestown, OH
- Average snowfall in January: 3.31"
The month with the highest snowfall is February (3.78").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Jamestown, OH
- Average snowfall days in January: 12.2 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Jamestown, OH
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 3h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in January
Jamestown, OH
- Average sunshine days in January: 11.1 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (9.2 days).
Average UV index in January
Jamestown, OH
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Jamestown, OH
- Average cloud cover in January: 62
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in January
Jamestown, OH
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Jamestown, Ohio, USA
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