January weather forecast
Phoenixville, PA

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Weather in January

January, the same as December, is an icy winter month in Phoenixville, Pennsylvania, with an average temperature fluctuating between 36°F (2.2°C) and 23.9°F (-4.5°C).

Temperature

January, with an average high of 36°F (2.2°C) and a low of 23.9°F (-4.5°C), signifies the coldest month of the year.

Humidity

In Phoenixville, the average relative humidity in January is 76%.

Rainfall

In Phoenixville, in January, during 6.9 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. In Phoenixville, during the entire year, the rain falls for 132.3 days and collects up to 13.98" (355mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. The months with the most snowfall are January and February, with an average 0.59" (15mm) of accumulated snow.

Daylight

In Phoenixville, the average length of the day in January is 9h and 42min.
On the first day of the month, sunrise is at 7:24 am and sunset at 4:46 pm. On the last day of January, sunrise is at 7:11 am and sunset at 5:19 pm EST.

Sunshine

In Phoenixville, the average sunshine in January is 4.8h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index, 2 during January, leads to the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.

Frequently asked questions

What are the coldest months?

Temperature records mark January as the coldest month, with highs averaging 36°F (2.2°C) and lows at 23.9°F (-4.5°C).

How cold is January?

In Phoenixville, 36°F (2.2°C) is the average high-temperature and 23.9°F (-4.5°C) is the average low-temperature during January.

What is the average humidity in January?

In Phoenixville, the average relative humidity in January is 76%.

How much does it rain in Phoenixville in January?

In Phoenixville, during January, the rain falls for 6.9 days and regularly aggregates up to 0.87" (22mm) of precipitation.

What is the snowiest month?

The months with the most snowfall are January and February, with an average 0.59" (15mm) of accumulated snow.

How much does it snow in January?

In January, it is snowing for 4.8 days. Throughout January, 0.59" (15mm) of snow is accumulated.

What is the average length of the day in January?

In January, the average day length is 9h and 42min.

What time are sunrise and sunset in January?

On the first day of January in Phoenixville, sunrise is at 7:24 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:19 pm EST.

How many hours of sunshine does Phoenixville have in January?

In January, the average sunshine duration is 4.8h.

When is the lowest UV index?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in January in Phoenixville?

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
Phoenixville, PA

Average temperature in January - Phoenixville, PA
  • Average high temperature in January: 36°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in January: 23.9°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

Average pressure in January
Phoenixville, PA

Average pressure in January - Phoenixville, 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
Phoenixville, PA

Average wind speed in January - Phoenixville, PA
  • Average wind speed in January: 8.1mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in January
Phoenixville, PA

Average humidity in January - Phoenixville, PA
  • Average humidity in January: 76%

The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are April and July (74%).

Average rainfall in January
Phoenixville, PA

Average rainfall in January - Phoenixville, PA
  • Average rainfall in January: 0.87"

The wettest month (with the highest rainfall) is August (1.77").
The driest month (with the least rainfall) is February (0.75").

Average rainfall days in January
Phoenixville, PA

Average rainfall days in January - Phoenixville, PA
  • Average rainfall days in January: 6.9 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (6.9 days).

Average snowfall in January
Phoenixville, PA

Average snowfall in January - Phoenixville, PA
  • Average snowfall in January: 0.59"

The months with the highest snowfall are January and February (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in January
Phoenixville, PA

Average snowfall days in January - Phoenixville, PA
  • Average snowfall days in January: 4.8 days

The month with the highest number of snowfall days is February (4.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

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

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 24min).

  • Average sunshine in January: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in January
Phoenixville, PA

Average sunshine days in January - Phoenixville, PA
  • Average sunshine days in January: 20.7 days

The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is June (12.8 days).

Average UV index in January
Phoenixville, PA

Average UV index in January - Phoenixville, PA
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in January
Phoenixville, PA

Average cloud cover in January - Phoenixville, PA
  • Average cloud cover in January: 46

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in January
Phoenixville, PA

Average visibility in January - Phoenixville, PA
  • Average visibility in January: 6mi

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

Phoenixville, Pennsylvania, USA

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