January weather forecastTri Mills, PA

January

Weather in January

January, the same as December, in Tri Mills, Pennsylvania, is another subzero cold winter month, with temperature in the range of an average low of 19°F (-7.2°C) and an average high of 31.8°F (-0.1°C).

Temperature

January stands out as Tri Mills's coldest month, with temperatures ranging between an average high of 31.8°F (-0.1°C) and a low of 19°F (-7.2°C).

Humidity

In Tri Mills, the average relative humidity in January is 81%.

Rainfall

In Tri Mills, in January, it is raining for 9.3 days, with typically 2.44" (62mm) of accumulated precipitation. In Tri Mills, during the entire year, the rain falls for 166.3 days and collects up to 31.06" (789mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. The month with the most snowfall in Tri Mills is January, when snow falls for 12.9 days and typically aggregates up to 5.94" (151mm) of snow.

Daylight

In Tri Mills, Pennsylvania, the average length of the day in January is 9h and 36min.
On the first day of the month, sunrise is at 7:30 am and sunset at 4:46 pm. On the last day of January, in Tri Mills, sunrise is at 7:17 am and sunset at 5:19 pm EST.

Sunshine

The average sunshine in January is 3.9h.

UV index

In Tri Mills, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In January, an average UV index of 2 transforms into the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

January, noted for its average high-temperature of 31.8°F (-0.1°C) and an average low-temperature of 19°F (-7.2°C), is considered the coldest month.

The high-temperature, in January, in Tri Mills, is 31.8°F (-0.1°C), while the low-temperature averages to 19°F (-7.2°C).

The average relative humidity in January in Tri Mills is 81%.

In Tri Mills, in January, during 9.3 rainfall days, 2.44" (62mm) of precipitation is typically accumulated.

January is the month with the most snowfall. Snow falls for 12.9 days and accumulates 5.94" (151mm) of snow.

In Tri Mills, during January, snow falls for 12.9 days and regularly aggregates up to 5.94" (151mm) of snow.

In Tri Mills, the average day length in January is 9h and 36min.

On the first day of January, sunrise is at 7:30 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:19 pm EST.

In January, the average sunshine duration is 3.9h.

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Tri Mills, PA

  • Average high temperature in January: 31.8°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in January: 19°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 (19°F).

Average pressure in January
Tri Mills, 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).

Average wind speed in January
Tri Mills, PA

  • Average wind speed in January: 7.8mph

The windiest months (with the highest average wind speed) are March and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in January
Tri Mills, PA

  • Average humidity in January: 81%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).

Average rainfall in January
Tri Mills, PA

  • Average rainfall in January: 2.44"

The wettest months (with the highest rainfall) are April and May (2.99").
The driest month (with the least rainfall) is September (2.05").

Average rainfall days in January
Tri Mills, PA

  • Average rainfall days in January: 9.3 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in January
Tri Mills, PA

  • Average snowfall in January: 5.94"

The month with the highest snowfall is January (5.94").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Tri Mills, PA

  • Average snowfall days in January: 12.9 days

The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Tri Mills, PA

  • Average daylight in January: 9h and 36min

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

  • Average sunshine in January: 3h and 54min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

Average sunshine days in January
Tri Mills, PA

  • Average sunshine days in January: 12.8 days

The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is February (9.8 days).

Average UV index in January
Tri Mills, PA

  • Average UV index in January: 2

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

Average cloud cover in January
Tri Mills, PA

  • Average cloud cover in January: 57

The months with the most cloud cover are February and December (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 35).

Average visibility in January
Tri Mills, PA

  • Average visibility in January: 5mi

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