January weather forecast
Glen Castle, NY

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Weather in January

January, like December, is another subzero cold winter month in Glen Castle, New York, with temperature in the range of an average high of 27.3°F (-2.6°C) and an average low of 15.8°F (-9°C).

Temperature

With average temperatures fluctuating between a high of 27.3°F (-2.6°C) and a low of 15.8°F (-9°C), January stands out as the coldest month.

Humidity

The average relative humidity in January is 86%.

Rainfall

January and November are months with the least rain in Glen Castle when the rain falls for 8.3 days and typically aggregates up to 2.4" (61mm) of rain.

Snowfall

Months with snowfall are January through May, October through December. In January, it is snowing for 21.6 days. Throughout January, 9.29" (236mm) of snow is accumulated. Throughout the year, there are 94.8 snowfall days, and 48.82" (1240mm) of snow is accumulated.

Daylight

In Glen Castle, the average length of the day in January is 9h and 31min.
On the first day of January, sunrise is at 7:32 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:16 pm EST.

Sunshine

In Glen Castle, the average sunshine in January is 2.8h.

UV index

January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 1 in January translates into these instructions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Always opt for UVA and UVB-resistant sunglasses on radiant days. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Aug 19, 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 its average high-temperature of 27.3°F (-2.6°C) and an average low-temperature of 15.8°F (-9°C), holds the record as the coldest month.

How cold is January?

The high-temperature, in January, in Glen Castle, is 27.3°F (-2.6°C), while the low-temperature averages to 15.8°F (-9°C).

What is the average humidity in January?

The average relative humidity in January is 86%.

What is the driest month?

The months with the least rainfall are January and November Rain falls for 8.3 days and accumulates 2.4" (61mm) of rain.

How many days does it rain in January?

In Glen Castle, in January, during 8.3 rainfall days, 2.4" (61mm) of precipitation is typically accumulated.

How much does it snow in January?

In January, it is snowing for 21.6 days. Throughout January, 9.29" (236mm) of snow is accumulated.

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

The average day length in January is 9h and 31min.

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:32 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:16 pm EST.

How long on average sun shines in January?

The average sunshine duration in January is 2.8h.

When is the lowest UV index?

January, February and December, with an average maximum UV index of 1, are months with the lowest UV index.

How high is the UV index in January?

The average daily maximum UV index in January is 1. A UV Index estimate of 2, and below, represents a low health threat from unsafe 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
Glen Castle, NY

Average temperature in January - Glen Castle, NY
  • Average high temperature in January: 27.3°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in January: 15.8°F

The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

Average pressure in January
Glen Castle, NY

Average pressure in January - Glen Castle, NY
  • Average pressure in January: 30.06"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in January
Glen Castle, NY

Average wind speed in January - Glen Castle, NY
  • Average wind speed in January: 9.3mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in January
Glen Castle, NY

Average humidity in January - Glen Castle, NY
  • Average humidity in January: 86%

The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, May, June and July (80%).

Average rainfall in January
Glen Castle, NY

Average rainfall in January - Glen Castle, NY
  • Average rainfall in January: 2.4"

The wettest month (with the highest rainfall) is June (3.58").
The driest months (with the least rainfall) are January and November (2.4").

Average rainfall days in January
Glen Castle, NY

Average rainfall days in January - Glen Castle, NY
  • Average rainfall days in January: 8.3 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (7.3 days).

Average snowfall in January
Glen Castle, NY

Average snowfall in January - Glen Castle, NY
  • Average snowfall in January: 9.29"

The month with the highest snowfall is February (10.87").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Glen Castle, NY

Average snowfall days in January - Glen Castle, NY
  • Average snowfall days in January: 21.6 days

The month with the highest number of snowfall days is January (21.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Glen Castle, NY

Average daylight in January / Average sunshine in January - Glen Castle, NY
  • Average daylight in January: 9h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in January: 2h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).

Average sunshine days in January
Glen Castle, NY

Average sunshine days in January - Glen Castle, NY
  • Average sunshine days in January: 6.6 days

The month with the most sunshine days is September (14.3 days).
The month with the least sunshine days is February (5.7 days).

Average UV index in January
Glen Castle, NY

Average UV index in January - Glen Castle, NY
  • Average UV index in January: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

Average cloud cover in January
Glen Castle, NY

Average cloud cover in January - Glen Castle, NY
  • Average cloud cover in January: 73

The month with the most cloud cover is February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 39).

Average visibility in January
Glen Castle, NY

Average visibility in January - Glen Castle, NY
  • Average visibility in January: 4mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).

Glen Castle, New York, USA

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