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
January stands out as Dayton's coldest month, with temperatures ranging between an average high of 37°F (2.8°C) and a low of 25°F (-3.9°C).Humidity
In Dayton, the average relative humidity in January is 75%.Rainfall
In Dayton, in January, during 4.8 rainfall days, 0.43" (11mm) of precipitation is typically accumulated. In Dayton, during the entire year, the rain falls for 92.9 days and collects up to 7.32" (186mm) of precipitation.Snowfall
Months with snowfall in Dayton are January through March, November and December. In January, in Dayton, it is snowing for 3.3 days. Throughout January, 0.28" (7mm) of snow is accumulated. Throughout the year, there are 12.7 snowfall days, and 1.5" (38mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 41min.On the first day of January in Dayton, sunrise is at 7:20 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:14 pm EST.
Sunshine
The average sunshine in January in Dayton is 5.1h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: An average maximum UV index of 2 in January leads to these recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Dayton?
How cold is it in Dayton in January?
What is the average humidity in January in Dayton?
How many days does it rain in January in Dayton?
How many days does it snow in January in Dayton?
How many hours of daylight does Dayton have in January?
When are sunrise and sunset in January in Dayton?
How many hours of sunshine does Dayton have in January?
When is the lowest UV index in Dayton?
What is the UV index reading in January in Dayton?
Average temperature in January
Dayton, NJ
- Average high temperature in January: 37°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in January: 25°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in January
Dayton, NJ
- Average pressure in January: 30.07"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
Dayton, NJ
- Average wind speed in January: 9.1mph
The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in January
Dayton, NJ
- Average humidity in January: 75%
The months with the highest relative humidity are February, May, October and December (77%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in January
Dayton, NJ
- Average rainfall in January: 0.43"
The wettest month (with the highest rainfall) is July (0.94").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in January
Dayton, NJ
- Average rainfall days in January: 4.8 days
The month with the highest number of rainy days is July (10.7 days).
The months with the least rainy days are January and November (4.8 days).
Average snowfall in January
Dayton, NJ
- Average snowfall in January: 0.28"
The month with the highest snowfall is March (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Dayton, NJ
- Average snowfall days in January: 3.3 days
The month with the highest number of snowfall days is February (3.8 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
Dayton, NJ
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in January
Dayton, NJ
- Average sunshine days in January: 24.2 days
The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is July (15.7 days).
Average UV index in January
Dayton, NJ
- 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, March, November and December (UV index 2).
Average cloud cover in January
Dayton, NJ
- Average cloud cover in January: 44
The months with the most cloud cover are February, March and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in January
Dayton, NJ
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Dayton, New Jersey, USA
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