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
During the coldest month, January, temperatures average a high of 33.8°F (1°C) and a low of 21.6°F (-5.8°C).Humidity
The average relative humidity in January is 78%.Rainfall
In January, the rain falls for 6.7 days. Throughout January, 1.06" (27mm) of precipitation is accumulated. In Annville, during the entire year, the rain falls for 137.4 days and collects up to 16.26" (413mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is January, when snow falls for 5.2 days and typically aggregates up to 1.97" (50mm) of snow.Daylight
The average length of the day in January is 9h and 41min.On the first day of the month, sunrise is at 7:28 am and sunset at 4:50 pm. On the last day of January, sunrise is at 7:16 am and sunset at 5:22 pm EST.
Sunshine
The average sunshine in January in Annville is 4.6h.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 of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 2 during January leads to these instructions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is January?
What is the average humidity in January?
How much does it rain in January?
When does it snow the most in Annville?
How many days does it snow in January in Annville?
What is the average length of the day in January?
When are sunrise and sunset in January in Annville?
How long on average sun shines in January?
What is the month with the lowest UV index?
What is the UV index intensity in January in Annville?
Average temperature in January
Annville, PA
- Average high temperature in January: 33.8°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in January: 21.6°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in January
Annville, 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
Annville, PA
- 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 (4.8mph).
Average humidity in January
Annville, PA
- Average humidity in January: 78%
The months with the highest relative humidity are February, May and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in January
Annville, PA
- Average rainfall in January: 1.06"
The wettest month (with the highest rainfall) is August (2.13").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in January
Annville, PA
- Average rainfall days in January: 6.7 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in January
Annville, PA
- Average snowfall in January: 1.97"
The month with the highest snowfall is January (1.97").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Annville, PA
- Average snowfall days in January: 5.2 days
The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Annville, 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 24min).
- 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
Annville, PA
- Average sunshine days in January: 20.3 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in January
Annville, 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
Annville, PA
- Average cloud cover in January: 49
The months with the most cloud cover are February and December (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in January
Annville, PA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, November and December (6mi).
The months with the lowest visibility are May, August, September and October (5mi).
Annville, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location