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
Allentown's January weather, with an average high temperature of 37.4°F (3°C) and an average low temperature of 25°F (-3.9°C), tends to be the coldest of the year.Humidity
In January, the average relative humidity in Allentown, New Jersey, is 75%.Rainfall
In Allentown, in January, it is raining for 8.3 days, with typically 1.73" (44mm) of accumulated precipitation. In Allentown, during the entire year, the rain falls for 152.9 days and collects up to 28.78" (731mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. In Allentown, in January, during 5.3 snowfall days, 1.89" (48mm) of snow is typically accumulated. In Allentown, during the entire year, snow falls for 17.7 days and aggregates up to 8.43" (214mm) of snow.Daylight
In Allentown, the average length of the day in January is 9h and 42min.On the first day of the month, sunrise is at 7:20 am and sunset at 4:42 pm. On the last day of January, sunrise is at 7:08 am and sunset at 5:15 pm EST.
Sunshine
In January, the average sunshine in Allentown is 5.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Allentown. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A daily high UV index of 2 in January leads to these guidelines:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What month is the coldest in Allentown?
How cold is it in Allentown in January?
What is the average humidity in January in Allentown?
How many days does it rain in January in Allentown?
How many days does it snow in January in Allentown?
How many hours of daylight does Allentown have in January?
When is the sunrise / sunset in January in Allentown?
How many hours of sunshine does Allentown have in January?
What are the months with the lowest UV index in Allentown?
How high is the UV index in January in Allentown?
Average temperature in January
Allentown, NJ
- Average high temperature in January: 37.4°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in January: 25°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in January
Allentown, 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
Allentown, NJ
- Average wind speed in January: 8.5mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in January
Allentown, NJ
- Average humidity in January: 75%
The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in January
Allentown, NJ
- Average rainfall in January: 1.73"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in January
Allentown, NJ
- Average rainfall days in January: 8.3 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in January
Allentown, NJ
- Average snowfall in January: 1.89"
The month with the highest snowfall is March (3.11").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Allentown, NJ
- Average snowfall days in January: 5.3 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Allentown, 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 24min).
- 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 48min).
Average sunshine days in January
Allentown, NJ
- Average sunshine days in January: 19.1 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11 days).
Average UV index in January
Allentown, 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, November and December (UV index 2).
Average cloud cover in January
Allentown, NJ
- Average cloud cover in January: 44
The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in January
Allentown, 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).
Allentown, New Jersey, USA
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