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
Trenton experiences its lowest average temperatures in January, reaching a peak of 31.6°F (-0.2°C) and a minimum of 19.8°F (-6.8°C).Humidity
The average relative humidity in January is 80%.Rainfall
In January, the rain falls for 5.8 days. Throughout January, 1.73" (44mm) of precipitation is accumulated. In Trenton, during the entire year, the rain falls for 139.8 days and collects up to 24.69" (627mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In January, it is snowing for 7.6 days. Throughout January, 4.53" (115mm) of snow is accumulated. Throughout the year, in Trenton, there are 33.6 snowfall days, and 20.67" (525mm) of snow is accumulated.Daylight
In Trenton, Pennsylvania, the average length of the day in January is 9h and 38min.On the first day of the month, sunrise is at 7:28 am and sunset at 4:46 pm. On the last day of January, in Trenton, sunrise is at 7:15 am and sunset at 5:19 pm EST.
Sunshine
The months with the least sunshine in Trenton are January and February, with an average of 4.3h of sunshine.UV index
The months with the lowest UV index are January through March, 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 unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 2 in January suggests the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. To protect against the Sun's most potent rays, avoid direct exposure around midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
What is the coldest time of year in Trenton?
How cold is it in Trenton in January?
What is the average humidity in January in Trenton?
How many days does it rain in January in Trenton?
How much does it snow in Trenton in January?
What is the average length of the day in January in Trenton?
When are sunrise and sunset in January in Trenton?
What is the month with the least sunshine in Trenton?
How long on average sun shines in January in Trenton?
What is the month with the lowest UV index in Trenton?
How high is the UV index in January in Trenton?
Average temperature in January
Trenton, PA
- Average high temperature in January: 31.6°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in January: 19.8°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in January
Trenton, PA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Trenton, PA
- Average wind speed in January: 8.1mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in January
Trenton, PA
- Average humidity in January: 80%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).
Average rainfall in January
Trenton, PA
- Average rainfall in January: 1.73"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in January
Trenton, PA
- Average rainfall days in January: 5.8 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in January
Trenton, PA
- Average snowfall in January: 4.53"
The month with the highest snowfall is March (4.96").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Trenton, PA
- Average snowfall days in January: 7.6 days
The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Trenton, PA
- Average daylight in January: 9h and 4min
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 18min).
- Average sunshine in January: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).
Average sunshine days in January
Trenton, PA
- Average sunshine days in January: 19.6 days
The months with the most sunshine days are January and November (19.6 days).
The month with the least sunshine days is May (11.2 days).
Average UV index in January
Trenton, PA
- Average UV index in January: 2
The month with the highest UV index is June (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
Trenton, PA
- Average cloud cover in January: 52
The months with the most cloud cover are February and December (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in January
Trenton, PA
- Average visibility in January: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Trenton, Pennsylvania, USA
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