January weather forecast
Seneca, PA

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Weather in January

January, the same as December, in Seneca, Pennsylvania, is a freezing cold winter month, with an average temperature varying between 30°F (-1.1°C) and 17.8°F (-7.9°C).

Temperature

Seneca's coldest weather arrives in January, when temperatures average a high of 30°F (-1.1°C) and a low of 17.8°F (-7.9°C).

Humidity

In Seneca, the average relative humidity in January is 88%.

Rainfall

In Seneca, during January, the rain falls for 8.3 days and regularly aggregates up to 3.07" (78mm) of precipitation. In Seneca, during the entire year, the rain falls for 177.7 days and collects up to 35.67" (906mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. The month with the most snowfall is January, when snow falls for 21.3 days and typically aggregates up to 10.83" (275mm) of snow.

Daylight

The average length of the day in January is 9h and 35min.
On the first day of January, sunrise is at 7:44 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:33 pm EST.

Sunshine

The month with the least sunshine is January, with an average of 2.3h of sunshine.

UV index

In Seneca, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: An average UV index of 2 in January transforms into this advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.

Frequently asked questions

What month is the coldest?

January, marked by an average high-temperature of 30°F (-1.1°C) and a low-temperature of 17.8°F (-7.9°C), is the coldest month.

How cold is January in Seneca?

In Seneca, 30°F (-1.1°C) is the average high-temperature and 17.8°F (-7.9°C) is the average low-temperature during January.

What is the average humidity in January?

In Seneca, the average relative humidity in January is 88%.

How many days does it rain in January?

In Seneca, in January, during 8.3 rainfall days, 3.07" (78mm) of precipitation is typically accumulated.

What is the snowiest month?

January is the month with the most snowfall. Snow falls for 21.3 days and accumulates 10.83" (275mm) of snow.

How much does it snow in January?

In Seneca, Pennsylvania, in January, snow falls for 21.3 days, with typically accumulated 10.83" (275mm) of snow.

What is the average length of the day in January?

The average day length in January is 9h and 35min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:44 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:33 pm EST.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 2.3h of sunshine.

How long on average sun shines in January?

In January, the average sunshine duration is 2.3h.

What is the UV index intensity in January?

In Seneca, the average daily maximum UV index in January is 2. A UV Index reading 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
Seneca, PA

Average temperature in January - Seneca, PA
  • Average high temperature in January: 30°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30°F).

  • Average low temperature in January: 17.8°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

Average pressure in January
Seneca, PA

Average pressure in January - Seneca, PA
  • Average pressure in January: 30.09"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
Seneca, PA

Average wind speed in January - Seneca, PA
  • Average wind speed in January: 8.2mph

The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

Average humidity in January
Seneca, PA

Average humidity in January - Seneca, PA
  • Average humidity in January: 88%

The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is May (78%).

Average rainfall in January
Seneca, PA

Average rainfall in January - Seneca, PA
  • Average rainfall in January: 3.07"

The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is November (2.36").

Average rainfall days in January
Seneca, PA

Average rainfall days in January - Seneca, PA
  • Average rainfall days in January: 8.3 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in January
Seneca, PA

Average snowfall in January - Seneca, PA
  • Average snowfall in January: 10.83"

The month with the highest snowfall is January (10.83").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Seneca, PA

Average snowfall days in January - Seneca, PA
  • Average snowfall days in January: 21.3 days

The month with the highest number of snowfall days is January (21.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Seneca, PA
  • Average daylight in January: 9h and 4min

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 12min).

  • Average sunshine in January: 2h and 2min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

Average sunshine days in January
Seneca, PA

Average sunshine days in January - Seneca, PA
  • Average sunshine days in January: 5.8 days

The month with the most sunshine days is September (12.1 days).
The month with the least sunshine days is February (5.6 days).

Average UV index in January
Seneca, PA

Average UV index in January - Seneca, 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
Seneca, PA

Average cloud cover in January - Seneca, PA
  • Average cloud cover in January: 77

The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 38).

Average visibility in January
Seneca, PA

Average visibility in January - Seneca, PA
  • Average visibility in January: 4mi

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

Seneca, Pennsylvania, USA

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