June weather forecast
Irmo, SC

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Weather in June

June is the marker of summer's arrival in Irmo with temperatures soaring and causing a noticeable change in the climate. It is during this month that people start hitting the beach, having picnics, and generally spending more time outdoors. The rainfall decreases a bit to 2.24" (57mm), complementing the increase in temperature. Despite the heat, the clear skies and longer sunshine hours promise exciting activities under the sun. With the peak summer month of July around the corner, anticipate even higher temperatures and outdoor festivities.

Temperature

June in Irmo brings a slight increase in the average high-temperature, progressing from a warm 81°F (27.2°C) in May to a hot 88.3°F (31.3°C). Irmo encounters an average low-temperature of 69.6°F (20.9°C) during June nights.

Heat index

The heat index value for June is evaluated at a fiery hot 102.2°F (39°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In June, the average relative humidity is 71%.

Rainfall

In June, the rain falls for 14 days. Throughout June, 2.24" (57mm) of precipitation is accumulated. In Irmo, during the entire year, the rain falls for 147.8 days and collects up to 28.23" (717mm) of precipitation.

Snowfall

In Irmo, snow does not fall in April through November.

Daylight

With an average of 14h and 24min of daylight, June has the longest days of the year.
On the first day of the month, sunrise is at 6:14 am and sunset at 8:31 pm. On the last day of June, sunrise is at 6:16 am and sunset at 8:40 pm EDT.

Sunshine

In June, the average sunshine is 10.8h.

UV index

The months with the highest UV index are June and July, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In June, the average maximum UV index of 7 translates into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.

Frequently asked questions

How hot does it get in June?

The average high-temperature and low-temperature during June are 88.3°F (31.3°C) and 69.6°F (20.9°C) respectively. In June, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 102.2°F (39°C).

What is the average humidity in June?

The average relative humidity in June is 71%.

How many days does it rain in June?

In Irmo, during June, the rain falls for 14 days and regularly aggregates up to 2.24" (57mm) of precipitation.

When it does not snow?

In Irmo, snow does not fall in April through November.

When are the longest days?

With an average of 14h and 24min of daylight, June has the longest days of the year.

What is the average length of the day in June?

The average day length in June is 14h and 23min.

When is the sunrise / sunset in June?

On the first day of June, sunrise is at 6:14 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:40 pm EDT.

How many hours of sunshine does Irmo have in June?

In June, the average sunshine duration is 10.8h.

What are the months with the highest UV index?

The months with the highest UV index are June and July, with an average maximum UV index of 7.

How high is the UV index in June?

The average daily maximum UV index in June is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.
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
Irmo, SC

Average temperature in June - Irmo, SC
  • Average high temperature in June: 88.3°F

The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (52.3°F).

  • Average low temperature in June: 69.6°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 (36.9°F).

Average pressure in June
Irmo, SC

Average pressure in June - Irmo, 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
Irmo, SC

Average wind speed in June - Irmo, SC
  • Average wind speed in June: 6mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in June
Irmo, SC

Average humidity in June - Irmo, SC
  • Average humidity in June: 71%

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is July (70%).

Average rainfall in June
Irmo, SC

Average rainfall in June - Irmo, SC
  • Average rainfall in June: 2.24"

The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in June
Irmo, SC

Average rainfall days in June - Irmo, SC
  • Average rainfall days in June: 14 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is October (7.8 days).

Average snowfall in June
Irmo, SC

Average snowfall in June - Irmo, SC
  • Average snowfall in June: 0"

The month with the highest snowfall is February (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in June
Irmo, SC

Average snowfall days in June - Irmo, SC
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in June /
Average sunshine in June
Irmo, SC

Average daylight in June / Average sunshine in June - Irmo, 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 5min

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).

Average sunshine days in June
Irmo, SC

Average sunshine days in June - Irmo, SC
  • Average sunshine days in June: 13.6 days

The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in June
Irmo, SC

Average UV index in June - Irmo, SC
  • Average UV index in June: 7

The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).

Average cloud cover in June
Irmo, SC

Average cloud cover in June - Irmo, SC
  • Average cloud cover in June: 28

The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 28).

Average visibility in June
Irmo, SC

Average visibility in June - Irmo, 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).

Irmo, South Carolina, USA

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