June weather forecast
Sumter Junction, SC

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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).

Temperature

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). Nighttime temperatures hover around an average low of 70°F (21.1°C) in June.

Heat index

June's heat index is estimated at a very hot 100.4°F (38°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', takes into account both air temperature and humidity to illustrate what people actually feel. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In Sumter Junction, the average relative humidity in June is 74%.

Rainfall

In Sumter Junction, in June, it is raining for 17.1 days, with typically 3.11" (79mm) of accumulated precipitation. Throughout the year, there are 161.8 rainfall days, and 33.35" (847mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

The month with the longest days is June, with an average of 14h and 24min of daylight.
On the first day of June, sunrise is at 6:12 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 8:37 pm EDT.

Sunshine

In Sumter Junction, South Carolina, the average sunshine in June is 10.5h.

UV index

The months with the highest UV index are June and July, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: A typical high UV index of 7 in June suggests the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Jul 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Sumter Junction in June?

The high-temperature, in June, in Sumter Junction, is 87.4°F (30.8°C), while the low-temperature averages to 70°F (21.1°C). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in June is estimated at 100.4°F (38°C).

What is the average humidity in June?

In Sumter Junction, the average relative humidity in June is 74%.

How much does it rain in June?

In Sumter Junction, in June, it is raining for 17.1 days, with typically 3.11" (79mm) of accumulated precipitation.

When it does not snow in Sumter Junction?

In Sumter Junction, snow does not fall in April through October.

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 average length of the day in June?

The average day length in June is 14h and 22min.

When is the sunrise / sunset in June?

In June, on the first day of the month, sunrise is at 6:12 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 8:37 pm EDT.

How long on average sun shines in June?

The average sunshine duration in June is 10.5h.

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 UV index intensity in June?

In June, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health 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 June
Sumter Junction, SC

Average temperature in June - Sumter Junction, SC
  • Average high temperature in June: 87.4°F

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).

  • Average low temperature in June: 70°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 in June
Sumter Junction, SC

Average pressure in June - Sumter Junction, SC
  • Average pressure in June: 29.97"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 in June
Sumter Junction, SC

Average wind speed in June - Sumter Junction, SC
  • Average wind speed in June: 6.3mph

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 in June
Sumter Junction, SC

Average humidity in June - Sumter Junction, SC
  • Average humidity in June: 74%

The month with the highest relative humidity is May (76%).
The months with the lowest relative humidity are January and November (70%).

Average rainfall in June
Sumter Junction, SC

Average rainfall in June - Sumter Junction, SC
  • Average rainfall in June: 3.11"

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 in June
Sumter Junction, SC

Average rainfall days in June - Sumter Junction, SC
  • Average rainfall days in June: 17.1 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 in June
Sumter Junction, SC

Average snowfall in June - Sumter Junction, SC
  • Average snowfall in June: 0"

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 in June
Sumter Junction, SC

Average snowfall days in June - Sumter Junction, SC
  • Average snowfall days in June: 0 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 in June /
Average sunshine in June
Sumter Junction, SC

Average daylight in June / Average sunshine in June - Sumter Junction, SC
  • Average daylight in June: 14h and 2min

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 June: 10h and 3min

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 in June
Sumter Junction, SC

Average sunshine days in June - Sumter Junction, SC
  • Average sunshine days in June: 10.8 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 in June
Sumter Junction, SC

Average UV index in June - Sumter Junction, SC
  • Average UV index in June: 7

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 in June
Sumter Junction, SC

Average cloud cover in June - Sumter Junction, SC
  • Average cloud cover in June: 30

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 in June
Sumter Junction, SC

Average visibility in June - Sumter Junction, SC
  • Average visibility in June: 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).

Sumter Junction, South Carolina, USA

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