January weather forecastHershey, PA
January
Weather in January
The new year starts in Hershey, Pennsylvania, with the full force of winter's chill. Nighttime temperatures plunge to a frosty 21.9°F (-5.6°C), making January the coldest month of the year. This month's weather is not for the faint-hearted, with thick fog often reducing visibility and icy gusts of wind reaching speeds of up to 13.6mph (21.9km/h). Despite the chilly conditions, snowfall is moderate and usually does not exceed 3.94" (100mm). Long, cold nights dominate, with only 9.7 hours of daylight and 4.7 hours of direct sunlight.Temperature
In Hershey, January is the coldest month, with temperatures averaging a high of 34.2°F (1.2°C) and a low of 21.9°F (-5.6°C).Humidity
In Hershey, Pennsylvania, the average relative humidity in January is 78%.Rainfall
In Hershey, in January, during 8.5 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Hershey, during the entire year, the rain falls for 162.3 days and collects up to 30.71" (780mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Hershey. The month with the most snowfall is January, when snow falls for 9 days and typically aggregates up to 3.94" (100mm) of snow.Daylight
In Hershey, the average length of the day in January is 9h and 41min.On the first day of the month, sunrise is at 7:29 am and sunset at 4:50 pm. On the last day of January, sunrise is at 7:16 am and sunset at 5:23 pm EST.
Sunshine
In Hershey, the average sunshine in January 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 minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 2 in January translates into the following instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Hershey, PA
- Average high temperature in January: 34.2°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in January: 21.9°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 (21.9°F).
Average pressure in January
Hershey, PA
- Average pressure in January: 30.1"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
Hershey, PA
- Average wind speed in January: 8.4mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in January
Hershey, PA
- Average humidity in January: 78%
The months with the highest relative humidity are February and May (81%).
The months with the lowest relative humidity are March and April (76%).
Average rainfall in January
Hershey, PA
- Average rainfall in January: 2.24"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in January
Hershey, PA
- Average rainfall days in January: 8.5 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in January
Hershey, PA
- Average snowfall in January: 3.94"
The month with the highest snowfall is January (3.94").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Hershey, PA
- Average snowfall days in January: 9 days
The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Hershey, PA
- Average daylight in January: 9h and 42min
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: 4h and 42min
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 30min).
Average sunshine days in January
Hershey, PA
- Average sunshine days in January: 15.8 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (10 days).
Average UV index in January
Hershey, 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
Hershey, PA
- Average cloud cover in January: 49
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in January
Hershey, PA
- Average visibility in January: 6mi
The months with the highest visibility are January, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are February, May, September and October (5mi).
