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, characterized by an average high temperature of 34°F (1.1°C) and a low temperature of 21.6°F (-5.8°C), is generally the coldest month.Humidity
In January, the average relative humidity is 78%.Rainfall
In Bethlehem, Pennsylvania, in January, it is raining for 7.8 days, with typically 1.81" (46mm) of accumulated precipitation. Throughout the year, in Bethlehem, there are 153 rainfall days, and 26.81" (681mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Bethlehem. In Bethlehem, in January, during 7.8 snowfall days, 3.23" (82mm) of snow is typically accumulated. Throughout the year, there are 26.7 snowfall days, and 14.49" (368mm) of snow is accumulated.Daylight
The average length of the day in January in Bethlehem is 9h and 40min.On the first day of the month, sunrise is at 7:25 am and sunset at 4:44 pm. On the last day of January, in Bethlehem, sunrise is at 7:12 am and sunset at 5:17 pm EST.
Sunshine
The average sunshine in January in Bethlehem is 4.7h.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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: An average UV index of 2 in January transforms into this advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Enhance your sun protection with tightly woven, yet airy clothing. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
What are the coldest months in Bethlehem?
How cold is it in Bethlehem in January?
What is the average humidity in January in Bethlehem?
How much does it rain in Bethlehem in January?
How many days does it snow in January in Bethlehem?
How many hours of daylight does Bethlehem have in January?
What time are sunrise and sunset in January in Bethlehem?
How long on average sun shines in January in Bethlehem?
What are the months with the lowest UV index in Bethlehem?
How high is the UV index in January in Bethlehem?
Average temperature in January
Bethlehem, PA
- Average high temperature in January: 34°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in January: 21.6°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in January
Bethlehem, PA
- Average pressure in January: 30.08"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Bethlehem, PA
- Average wind speed in January: 8mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in January
Bethlehem, PA
- Average humidity in January: 78%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in January
Bethlehem, PA
- Average rainfall in January: 1.81"
The wettest month (with the highest rainfall) is July (2.91").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in January
Bethlehem, PA
- Average rainfall days in January: 7.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in January
Bethlehem, PA
- Average snowfall in January: 3.23"
The month with the highest snowfall is March (4.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Bethlehem, PA
- Average snowfall days in January: 7.8 days
The months with the highest number of snowfall days are January and February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Bethlehem, PA
- 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: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in January
Bethlehem, PA
- Average sunshine days in January: 18 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11 days).
Average UV index in January
Bethlehem, PA
- Average UV index in January: 2
The months with the highest UV index are May, June and July (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
Bethlehem, PA
- Average cloud cover in January: 48
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in January
Bethlehem, PA
- Average visibility in January: 5mi
The months with the highest visibility are April, June and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September, October and December (5mi).
Bethlehem, Pennsylvania, USA
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