January weather forecast
Annville, PA

Weather in January

January, like December, in Annville, Pennsylvania, is another cold winter month, with an average temperature varying between 21.6°F (-5.8°C) and 33.8°F (1°C).

Temperature

The coldest month is January, with an average high-temperature of 33.8°F (1°C) and an average low-temperature of 21.6°F (-5.8°C).

Humidity

In Annville, the average relative humidity in January is 78%.

Rainfall

In January, in Annville, 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. January is the month with the most snowfall in Annville. Snow falls for 5.2 days and accumulates 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 7:15 am and sunset at 5:23 pm EST.

Sunshine

In Annville, the average sunshine in January is 4.6h.

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 reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Annville?

With an average high-temperature of 33.8°F (1°C) and an average low-temperature of 21.6°F (-5.8°C), January is the coldest month.

What is the average humidity in January in Annville?

In Annville, the average relative humidity in January is 78%.

How much does it rain in Annville in January?

In Annville, Pennsylvania, in January, it is raining for 6.7 days, with typically 1.06" (27mm) of accumulated precipitation.

What is the snowiest month in Annville?

January is the month with the most snowfall. Snow falls for 5.2 days and accumulates 1.97" (50mm) of snow.

How much does it snow in Annville in January?

In Annville, Pennsylvania, in January, snow falls for 5.2 days, with typically accumulated 1.97" (50mm) of snow.

How many hours of daylight does Annville have in January?

In Annville, Pennsylvania, the average day length in January is 9h and 41min.

When are sunrise and sunset in January in Annville?

In January, on the first day of the month, sunrise is at 7:28 am and sunset at 4:50 pm. On the last day of the month, in Annville, Pennsylvania, sunrise is at 7:15 am and sunset at 5:23 pm EST.

How long on average sun shines in January in Annville?

The average sunshine duration in January in Annville, Pennsylvania, is 4.6h.

What are the months with the lowest UV index in Annville?

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.

How high is the UV index in January in Annville?

The average daily maximum UV index in January in Annville, Pennsylvania, is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.

Average temperature in January
Annville, PA

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).

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Average pressure in January
Annville, PA

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).

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Average wind speed in January
Annville, PA

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).

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Average humidity in January
Annville, PA

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%).

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Average rainfall in January
Annville, PA

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").

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Average rainfall days in January
Annville, PA

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).

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Average snowfall in January
Annville, PA

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").

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Average snowfall days in January
Annville, PA

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).

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Average daylight in January /
Average sunshine in January
Annville, PA

Average daylight in January / Average sunshine in January - Annville, PA
  • Average daylight in January: 9h and 41min

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 21min).

  • Average sunshine in January: 4.6h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.5h).

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Average sunshine days in January
Annville, PA

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).

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Average UV index in January
Annville, PA

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).

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Average cloud cover in January
Annville, PA

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).

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Average visibility in January
Annville, PA

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).

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