January weather forecast
Summerville, SC

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Weather in January

A fresh start to the year is marked by mild weather in Summerville, South Carolina. Winter is in full swing; however, the city is primarily driven by the temperate climate. It can be cooler than the rest of the year, with an average high temperature of 56.8°F (13.8°C) and a low of 40.1°F (4.5°C). The skies tend to be partly cloudy, setting a serene atmospheric tone for the month. A gentle wind is common, ushering a pleasant breeze through the town.

Temperature

Summerville, South Carolina, witnesses the coldest weather in January, with temperatures averaging a high of 56.8°F (13.8°C) and a low of 40.1°F (4.5°C).

Humidity

The months with the lowest humidity are January and March, with an average relative humidity of 72%.

Rainfall

January is the month with the least rainfall. Rain falls for 5.7 days and accumulates 0.28" (7mm) of precipitation.

Snowfall

January and February are months with snowfall in Summerville. The months with the most snowfall in Summerville are January and February, with an average 0.04" (1mm) of accumulated snow.

Daylight

In Summerville, the average length of the day in January is 10h and 16min.
On the first day of the month, sunrise is at 7:23 am and sunset at 5:24 pm. On the last day of January, in Summerville, sunrise is at 7:16 am and sunset at 5:51 pm EST.

Sunshine

The average sunshine in January in Summerville is 5.6h.

UV index

January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 3 in January translates into these instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Stay sun-safe with clothing that is both closely woven and worn loosely. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What part of the year is the coldest in Summerville?

In Summerville, January is the month with the lowest recorded average temperatures, measuring a high of 56.8°F (13.8°C) and a low of 40.1°F (4.5°C).

What is the average January temperature in Summerville?

The high-temperature in Summerville during January is 56.8°F (13.8°C) and the low-temperature is 40.1°F (4.5°C).

What are the least humid months in Summerville?

The months with the lowest humidity are January and March, with an average relative humidity of 72%.

What is the average humidity in January in Summerville?

The average relative humidity in January in Summerville, South Carolina, is 72%.

What is the driest month in Summerville?

January is the month with the least rainfall in Summerville, South Carolina. Rain falls for 5.7 days and accumulates 0.28" (7mm) of precipitation.

How much does it rain in Summerville in January?

In January, in Summerville, the rain falls for 5.7 days. Throughout January, 0.28" (7mm) of precipitation is accumulated.

What is the snowiest month in Summerville?

The months with the most snowfall in Summerville, South Carolina, are January and February, with an average 0.04" (1mm) of accumulated snow.

When does it start snowing in Summerville?

January is the first month it typically snows in Summerville. Throughout January, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow.

How many hours of daylight does Summerville have in January?

In January, the average day length in Summerville is 10h and 16min.

What time are sunrise and sunset in January in Summerville?

On the first day of January, sunrise is at 7:23 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 5:51 pm EST.

How many hours of sunshine does Summerville have in January?

The average sunshine duration in January in Summerville, South Carolina, is 5.6h.

When is the lowest UV index in Summerville?

January and December, with an average maximum UV index of 3, are months with the lowest UV index.

How high is the UV index in January in Summerville?

In January, the average daily maximum UV index in Summerville, South Carolina, is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Summerville, SC

Average temperature in January - Summerville, SC
  • Average high temperature in January: 56.8°F

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (56.8°F).

  • Average low temperature in January: 40.1°F

The month with the highest average low temperature is July (74.7°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).

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Average pressure in January
Summerville, SC

Average pressure in January - Summerville, SC
  • Average pressure in January: 30.14"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed in January
Summerville, SC

Average wind speed in January - Summerville, SC
  • Average wind speed in January: 6.1mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in January
Summerville, SC

Average humidity in January - Summerville, SC
  • Average humidity in January: 72%

The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January and March (72%).

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Average rainfall in January
Summerville, SC

Average rainfall in January - Summerville, SC
  • Average rainfall in January: 0.28"

The wettest month (with the highest rainfall) is August (2.09").
The driest month (with the least rainfall) is January (0.28").

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Average rainfall days in January
Summerville, SC

Average rainfall days in January - Summerville, SC
  • Average rainfall days in January: 5.7 days

The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is January (5.7 days).

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Average snowfall in January
Summerville, SC

Average snowfall in January - Summerville, SC
  • Average snowfall in January: 0.04"

The months with the highest snowfall are January and February (0.04").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in January
Summerville, SC

Average snowfall days in January - Summerville, SC
  • Average snowfall days in January: 0.3 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in January /
Average sunshine in January
Summerville, SC

Average daylight in January / Average sunshine in January - Summerville, SC
  • Average daylight in January: 10h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in January: 5h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in January
Summerville, SC

Average sunshine days in January - Summerville, SC
  • Average sunshine days in January: 23.6 days

The month with the most sunshine days is January (23.6 days).
The month with the least sunshine days is August (7.4 days).

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Average UV index in January
Summerville, SC

Average UV index in January - Summerville, SC
  • Average UV index in January: 3

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in January
Summerville, SC

Average cloud cover in January - Summerville, SC
  • Average cloud cover in January: 38

The months with the most cloud cover are February and December (Cloud cover 42).
The months with the least cloud cover are July and October (Cloud cover 29).

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Average visibility in January
Summerville, SC

Average visibility in January - Summerville, SC
  • Average visibility in January: 6mi

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

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Summerville, South Carolina, USA

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