January weather forecast
Castle Valley, PA

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Weather in January

January, the same as December, is a wintry winter month in Castle Valley, Pennsylvania, with an average temperature ranging between max 35.6°F (2°C) and min 23.4°F (-4.8°C).

Temperature

Castle Valley's coldest month, January, registers temperatures that range from a high of 35.6°F (2°C) to a low of 23.4°F (-4.8°C).

Humidity

In Castle Valley, the average relative humidity in January is 76%.

Rainfall

In Castle Valley, in January, during 8.7 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. In Castle Valley, during the entire year, the rain falls for 158.6 days and collects up to 28.31" (719mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Castle Valley, in January, during 7.9 snowfall days, 2.13" (54mm) of snow is typically accumulated. In Castle Valley, during the entire year, snow falls for 24.6 days and aggregates up to 10.24" (260mm) of snow.

Daylight

In January, the average length of the day is 9h and 41min.
On the first day of the month, sunrise is at 7:23 am and sunset at 4:44 pm. On the last day of January, sunrise is at 7:10 am and sunset at 5:17 pm EST.

Sunshine

In January, the average sunshine is 4.9h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Castle Valley. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In January, an average UV index of 2 transforms into the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Enhance your sun protection with tightly woven, yet airy clothing. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

January, with an average high of 35.6°F (2°C) and a low of 23.4°F (-4.8°C), signifies the coldest month of the year.

How cold is it in January?

January temperatures vary between a high-temperature of 35.6°F (2°C) and a low-temperature of 23.4°F (-4.8°C).

What is the average humidity in January?

In Castle Valley, the average relative humidity in January is 76%.

How many days does it rain in January?

In Castle Valley, in January, during 8.7 rainfall days, 1.85" (47mm) of precipitation is typically accumulated.

How many days does it snow in January?

In Castle Valley, during January, snow falls for 7.9 days and regularly aggregates up to 2.13" (54mm) of snow.

How many hours of daylight does Castle Valley have in January?

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

What time are sunrise and sunset in January?

On the first day of January, sunrise is at 7:23 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:17 pm EST.

How long on average sun shines in January?

In Castle Valley, the average sunshine duration in January is 4.9h.

What are the months with the lowest UV index?

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

What is the UV index reading in January?

In Castle Valley, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Castle Valley, PA

Average temperature in January - Castle Valley, PA
  • Average high temperature in January: 35.6°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in January: 23.4°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in January
Castle Valley, PA

Average pressure in January - Castle Valley, 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
Castle Valley, PA

Average wind speed in January - Castle Valley, 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 (5.2mph).

Average humidity in January
Castle Valley, PA

Average humidity in January - Castle Valley, PA
  • Average humidity in January: 76%

The months with the highest relative humidity are February and October (79%).
The month with the lowest relative humidity is April (73%).

Average rainfall in January
Castle Valley, PA

Average rainfall in January - Castle Valley, PA
  • Average rainfall in January: 1.85"

The wettest month (with the highest rainfall) is July (2.87").
The driest month (with the least rainfall) is September (1.65").

Average rainfall days in January
Castle Valley, PA

Average rainfall days in January - Castle Valley, PA
  • Average rainfall days in January: 8.7 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.7 days).

Average snowfall in January
Castle Valley, PA

Average snowfall in January - Castle Valley, PA
  • Average snowfall in January: 2.13"

The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Castle Valley, PA

Average snowfall days in January - Castle Valley, PA
  • Average snowfall days in January: 7.9 days

The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Castle Valley, PA

Average daylight in January / Average sunshine in January - Castle Valley, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in January
Castle Valley, PA

Average sunshine days in January - Castle Valley, PA
  • Average sunshine days in January: 17.8 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (11 days).

Average UV index in January
Castle Valley, PA

Average UV index in January - Castle Valley, PA
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (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
Castle Valley, PA

Average cloud cover in January - Castle Valley, PA
  • Average cloud cover in January: 46

The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in January
Castle Valley, PA

Average visibility in January - Castle Valley, PA
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

Castle Valley, Pennsylvania, USA

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