January weather forecastArnold, PA

January

Weather in January

January, the same as December, is an icy winter month in Arnold, Pennsylvania, with an average temperature ranging between min 20.3°F (-6.5°C) and max 32.7°F (0.4°C).

Temperature

Arnold witnesses the coldest weather in January, with temperatures averaging a high of 32.7°F (0.4°C) and a low of 20.3°F (-6.5°C).

Humidity

In January, the average relative humidity is 84%.

Rainfall

In Arnold, in January, during 11.1 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, there are 185.5 rainfall days, and 35.59" (904mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. January is the month with the most snowfall. Snow falls for 18 days and accumulates 6.73" (171mm) of snow.

Daylight

In January, the average length of the day is 9h and 40min.
On the first day of the month, sunrise is at 7:42 am and sunset at 5:02 pm. On the last day of January, sunrise is at 7:29 am and sunset at 5:35 pm EST.

Sunshine

With an average of 2.9h of sunshine, January has the least sunshine of the year.

UV index

In January, the average daily maximum UV index in Arnold is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In January, a regular UV index of 2 translates into these guidelines:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.

Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The coldest temperatures occur during January, when averages reach a peak of 32.7°F (0.4°C) and a low of 20.3°F (-6.5°C).

In January, the average high-temperature and low-temperature are 32.7°F (0.4°C) and 20.3°F (-6.5°C) respectively.

In Arnold, the average relative humidity in January is 84%.

In Arnold, in January, it is raining for 11.1 days, with typically 2.56" (65mm) of accumulated precipitation.

The month with the most snowfall is January, when snow falls for 18 days and typically aggregates up to 6.73" (171mm) of snow.

In January, it is snowing for 18 days. Throughout January, 6.73" (171mm) of snow is accumulated.

In Arnold, the average day length in January is 9h and 40min.

In January, on the first day of the month, sunrise is at 7:42 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:35 pm EST.

The month with the least sunshine is January, with an average of 2.9h of sunshine.

In January, the average sunshine duration is 2.9h.

In Arnold, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

38.7°F

32.7°F

36.9°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8mph

8.6mph

8.2mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

7.3

7.8

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Arnold, PA

Average high temperature in January: 32.7°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (32.7°F).

Average low temperature in January: 20.3°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in January
Arnold, PA

Average pressure in January: 30.11"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in January
Arnold, PA

Average wind speed in January: 8.1mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in January
Arnold, PA

Average humidity in January: 84%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (76%).

Average rainfall in January
Arnold, PA

Average rainfall in January: 2.56"

The wettest months (with the highest rainfall) are April and May (3.66").
The driest month (with the least rainfall) is November (2.2").

Average rainfall days in January
Arnold, PA

Average rainfall days in January: 11.1 days

The month with the highest number of rainy days is May (20.2 days).
The month with the least rainy days is January (11.1 days).

Average snowfall in January
Arnold, PA

Average snowfall in January: 6.73"

The month with the highest snowfall is January (6.73").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Arnold, PA

Average snowfall days in January: 18 days

The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January: 9h and 42min

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 18min).

Average sunshine in January: 2h and 54min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).