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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Sumter Junction, South Carolina, is a cool winter month, with an average temperature ranging between max 52.9°F (11.6°C) and min 38.1°F (3.4°C). The coldest period is January, when temperatures fluctuate between an average high of 52.9°F (11.6°C) and a low of 38.1°F (3.4°C). Weather in January »
Weather in February
The last month of the winter, February, is a moderate month in Sumter Junction, South Carolina, with an average temperature fluctuating between 57.7°F (14.3°C) and 41°F (5°C). Sumter Junction's average high-temperature in February is a moderate 57.7°F (14.3°C), marking an insignificant difference from the 52.9°F (11.6°C) of January. Weather in February »
Weather in March
The first month of the spring, March, is a comfortable month in Sumter Junction, South Carolina, with an average temperature fluctuating between 46.6°F (8.1°C) and 63.9°F (17.7°C). A soft shift in the average high-temperature is noticeable in March, transitioning from a refreshing 57.7°F (14.3°C) in February to an enjoyable 63.9°F (17.7°C). Weather in March »
Weather in April
April is a warm spring month in Sumter Junction, South Carolina, with an average temperature varying between 73.4°F (23°C) and 55°F (12.8°C). Sumter Junction's transition into April sees a rise in the average high-temperature, advancing from a refreshing 63.9°F (17.7°C) in March to a moderately hot 73.4°F (23°C). Weather in April »
Weather in May
The last month of the spring, May, is another warm month in Sumter Junction, South Carolina, with temperature in the range of an average low of 62.8°F (17.1°C) and an average high of 80.2°F (26.8°C). Sumter Junction's weather shows a minor temperature rise with the arrival of May, moving from 73.4°F (23°C) in April to a still moderately hot 80.2°F (26.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a tropical month in Sumter Junction, South Carolina, with an average temperature ranging between max 87.4°F (30.8°C) and min 70°F (21.1°C). In Sumter Junction, the average high-temperature in June slightly rises, from a warm 80.2°F (26.8°C) in May, to a tropical 87.4°F (30.8°C). Weather in June »
Weather in July
July, the same as June, in Sumter Junction, South Carolina, is another hot summer month, with temperature in the range of an average low of 72.9°F (22.7°C) and an average high of 90.7°F (32.6°C). Sumter Junction's temperatures peak on average in July, reaching 90.7°F (32.6°C) at their highest and 72.9°F (22.7°C) at their lowest. Throughout July, the heat index is estimated at an extremely hot 109.4°F (43°C). Weather in July »
Weather in August
The last month of the summer, August, is another hot month in Sumter Junction, South Carolina, with an average temperature ranging between min 71.4°F (21.9°C) and max 88.9°F (31.6°C). August commences with an average high-temperature of a still tropical 88.9°F (31.6°C), showing little deviation from July's 90.7°F (32.6°C). Weather in August »
Weather in September
September, the first month of the autumn in Sumter Junction, is still a warm month, with an average temperature fluctuating between 83.7°F (28.7°C) and 66.6°F (19.2°C). September's advent presents an average high-temperature of a warm 83.7°F (28.7°C), indicating a slight variation from the conditions of the previous month. Weather in September »
Weather in October
October, the same as September, is a moderately hot autumn month in Sumter Junction, South Carolina, with temperature in the range of an average low of 56.7°F (13.7°C) and an average high of 73.8°F (23.2°C). In the transition to October, Sumter Junction observes a drop in the average high-temperature, moving from 83.7°F (28.7°C) in September to a still moderately hot 73.8°F (23.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Sumter Junction, is also an enjoyable month, with temperature in the range of an average high of 62.4°F (16.9°C) and an average low of 46.4°F (8°C). The start of November signals a decrease in the average high-temperature, transitioning from a moderately hot 73.8°F (23.2°C) in October to an enjoyable 62.4°F (16.9°C). Weather in November »
Weather in December
The first month of the winter, December, is still a refreshing month in Sumter Junction, South Carolina, with an average temperature varying between 42.3°F (5.7°C) and 56.3°F (13.5°C). Sumter Junction in December undergoes a slight reduction in the average high-temperature, shifting from November's comfortable 62.4°F (16.9°C) to a moderate 56.3°F (13.5°C). Weather in December »
Updated: Jul 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
January stands out as Sumter Junction's coldest month, with an average high-temperature of 52.9°F (11.6°C) and a low-temperature of 38.1°F (3.4°C).
What are the least humid months?
January and November, with an average relative humidity of 70%, are the least humid months.
What is the driest month?
January is the month with the least rainfall in Sumter Junction, South Carolina. Rain falls for 10.5 days and accumulates 1.89" (48mm) of precipitation.
How much does it rain?
In Sumter Junction, South Carolina, during the entire year, the rain falls for 161.8 days and collects up to 33.35" (847mm) of precipitation.
When does it snow?
Months with snowfall are January through March, November and December.
How much does it snow in Sumter Junction?
In Sumter Junction, during the entire year, snow falls for 1.3 days and aggregates up to 1.06" (27mm) of snow.
When is the lowest UV index?
January, February and December, with an average maximum UV index of 3, are months with the lowest UV index.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 0.6 days and accumulates 0.55" (14mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
When it does not snow?
In Sumter Junction, snow does not fall in April through October.
What is the most humid month in Sumter Junction?
With an average relative humidity of 76%, May is the most humid month.
When are the longest days?
The month with the longest days is June, with an average of 14h and 24min of daylight.
What is the month with the highest UV index?
The months with the highest UV index are June and July, with an average maximum UV index of 7.
What is the hottest time of year in Sumter Junction?
In Sumter Junction, July is the warmest month, with temperatures averaging a high of 90.7°F (32.6°C) and a low of 72.9°F (22.7°C).
What month has the most sunshine?
The month with the most sunshine is July, with an average of 10.7h of sunshine.
What is the rainiest month?
December is the month with the most rainfall. Rain falls for 11 days and accumulates 3.58" (91mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 54min of daylight.
What is the month with the least sunshine in Sumter Junction?
With an average of 5.3h of sunshine, December has the least sunshine of the year.
Average temperature
Sumter Junction, SC
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (52.9°F).
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).
Average pressure
Sumter Junction, SC
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
30.02"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
29.97"Hg
- Average pressure in July:
29.99"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"Hg
The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed
Sumter Junction, SC
- Average wind speed in January:
8mph - Average wind speed in February:
8.5mph - Average wind speed in March:
8.3mph - Average wind speed in April:
8.5mph - Average wind speed in May:
7.1mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
5.6mph - Average wind speed in September:
6.3mph - Average wind speed in October:
7.1mph - Average wind speed in November:
7.1mph - Average wind speed in December:
7.5mph
The windiest months (with the highest average wind speed) are February and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity
Sumter Junction, SC
The month with the highest relative humidity is May (76%).
The months with the lowest relative humidity are January and November (70%).
Average rainfall
Sumter Junction, SC
- Average rainfall in January:
1.89" - Average rainfall in February:
2.44" - Average rainfall in March:
2.13" - Average rainfall in April:
3.19" - Average rainfall in May:
3.35" - Average rainfall in June:
3.11"
- Average rainfall in July:
3.23" - Average rainfall in August:
3.5" - Average rainfall in September:
2.48" - Average rainfall in October:
2.48" - Average rainfall in November:
1.97" - Average rainfall in December:
3.58"
The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days
Sumter Junction, SC
- Average rainfall days in January:
10.5 days - Average rainfall days in February:
10.8 days - Average rainfall days in March:
12.9 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
15.6 days - Average rainfall days in June:
17.1 days
- Average rainfall days in July:
20.1 days - Average rainfall days in August:
18.7 days - Average rainfall days in September:
14.1 days - Average rainfall days in October:
8.5 days - Average rainfall days in November:
8.7 days - Average rainfall days in December:
11 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is October (8.5 days).
Average snowfall
Sumter Junction, SC
The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Sumter Junction, SC
- Average snowfall days in January:
0.4 days - Average snowfall days in February:
0.6 days - Average snowfall days in March:
0.1 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.1 days - Average snowfall days in December:
0.1 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Sumter Junction, SC
- Average daylight in January:
10h and 1min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January:
5h and 3min - Average sunshine in February:
6h and 2min - Average sunshine in March:
7h and 2min - Average sunshine in April:
9h and 1min - Average sunshine in May:
9h and 4min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 2min - Average sunshine in September:
8h and 4min - Average sunshine in October:
6h and 4min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days
Sumter Junction, SC
- Average sunshine days in January:
19.2 days - Average sunshine days in February:
16 days - Average sunshine days in March:
17.3 days - Average sunshine days in April:
14 days - Average sunshine days in May:
13.4 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
8.8 days - Average sunshine days in August:
8.9 days - Average sunshine days in September:
13.5 days - Average sunshine days in October:
20.8 days - Average sunshine days in November:
20.5 days - Average sunshine days in December:
18.8 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (8.8 days).
Average UV index
Sumter Junction, SC
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover
Sumter Junction, SC
The months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility
Sumter Junction, SC
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).
Sumter Junction, South Carolina, USA
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