January weather forecast
Guilderland, NY

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Weather in January

January, like December, is another subzero cold winter month in Guilderland, New York, with temperature in the range of an average low of 16.7°F (-8.5°C) and an average high of 28.8°F (-1.8°C).

Temperature

In Guilderland, January is the month with the lowest recorded average temperatures, measuring a high of 28.8°F (-1.8°C) and a low of 16.7°F (-8.5°C).

Humidity

In January, the average relative humidity is 81%.

Rainfall

In Guilderland, in January, during 8.9 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, there are 160.4 rainfall days, and 32.44" (824mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. The month with the most snowfall is January, when snow falls for 13.8 days and typically aggregates up to 8.15" (207mm) of snow.

Daylight

In January, the average length of the day is 9h and 28min.
On the first day of the month, sunrise is at 7:25 am and sunset at 4:32 pm. On the last day of January, sunrise is at 7:11 am and sunset at 5:06 pm EST.

Sunshine

In Guilderland, the average sunshine in January is 4.2h.

UV index

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 2 in January transforms into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.

Frequently asked questions

What part of the year is the coldest in Guilderland?

Guilderland's January weather reaches an average high of 28.8°F (-1.8°C) and an average low of 16.7°F (-8.5°C), making it the coldest month.

How cold is it in January?

The average high-temperature and low-temperature during January are 28.8°F (-1.8°C) and 16.7°F (-8.5°C) respectively.

What is the average humidity in January?

In January, the average relative humidity is 81%.

How many days does it rain in January?

In January, the rain falls for 8.9 days. Throughout January, 2.28" (58mm) of precipitation is accumulated.

What is the snowiest month?

January is the month with the most snowfall. Snow falls for 13.8 days and accumulates 8.15" (207mm) of snow.

How many days does it snow in January?

In Guilderland, in January, during 13.8 snowfall days, 8.15" (207mm) of snow is typically accumulated.

What is the average length of the day in January in Guilderland?

The average day length in January is 9h and 28min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:25 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:06 pm EST.

How long on average sun shines in January?

The average sunshine duration in January is 4.2h.

How high is the UV index in January?

In Guilderland, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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
Guilderland, NY

Average temperature in January - Guilderland, NY
  • Average high temperature in January: 28.8°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in January: 16.7°F

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

Average pressure in January
Guilderland, NY

Average pressure in January - Guilderland, NY
  • Average pressure in January: 30.04"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in January
Guilderland, NY

Average wind speed in January - Guilderland, NY
  • Average wind speed in January: 8.1mph

The windiest months (with the highest average wind speed) are January and February (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in January
Guilderland, NY

Average humidity in January - Guilderland, NY
  • Average humidity in January: 81%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (74%).

Average rainfall in January
Guilderland, NY

Average rainfall in January - Guilderland, NY
  • Average rainfall in January: 2.28"

The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (2.05").

Average rainfall days in January
Guilderland, NY

Average rainfall days in January - Guilderland, NY
  • Average rainfall days in January: 8.9 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (8.3 days).

Average snowfall in January
Guilderland, NY

Average snowfall in January - Guilderland, NY
  • Average snowfall in January: 8.15"

The month with the highest snowfall is January (8.15").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Guilderland, NY

Average snowfall days in January - Guilderland, NY
  • Average snowfall days in January: 13.8 days

The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Guilderland, NY

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

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in January: 4h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

Average sunshine days in January
Guilderland, NY

Average sunshine days in January - Guilderland, NY
  • Average sunshine days in January: 13.7 days

The month with the most sunshine days is September (16.7 days).
The months with the least sunshine days are February and April (11.3 days).

Average UV index in January
Guilderland, NY

Average UV index in January - Guilderland, NY
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in January
Guilderland, NY

Average cloud cover in January - Guilderland, NY
  • Average cloud cover in January: 55

The month with the most cloud cover is February (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 33).

Average visibility in January
Guilderland, NY

Average visibility in January - Guilderland, NY
  • Average visibility in January: 5mi

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

Guilderland, New York, USA

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