October weather forecast
Irmo, SC

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Weather in October

October is the month where autumn firmly establishes itself, bringing abundant fall foliage and comfortable temperatures perfect for enjoying the outdoors. This is the month when pumpkin patches and cozy sweaters become the norm, greatly enhancing the Irmo experience. Despite the change, rainfall starts to rise again, recorded at 2.05" (52mm) for this month. As we move closer to November, the temperatures continue to fall, mingling with occasional rain showers. Yet, the charm of fall remains unwavered, maintaining its ambiance throughout the area.

Temperature

Setting in of October comes with a decrease in the average high-temperature, moving from a moderately hot 84.7°F (29.3°C) in September to a still warm 73.6°F (23.1°C). Throughout the month of October, Irmo expects an average low of 55.4°F (13°C).

Humidity

The average relative humidity in October is 72%.

Rainfall

In October, the rain falls for 7.8 days. Throughout October, 2.05" (52mm) 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

April through November are months without snowfall.

Daylight

In October, the average length of the day is 11h and 19min.
On the first day of October, sunrise is at 7:19 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 6:32 pm EDT.

Sunshine

In Irmo, the average sunshine in October is 6.7h.

UV index

In October, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: In October, the UV index of 5 transforms into the following advice:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.

Frequently asked questions

What are October temperatures?

The average high-temperature and low-temperature during October are 73.6°F (23.1°C) and 55.4°F (13°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in September is evaluated at 93.2°F (34°C).

What is the average humidity in October in Irmo?

In October, the average relative humidity is 72%.

How many days does it rain in October?

In Irmo, in October, during 7.8 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

When it does not snow?

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

How many hours of daylight does Irmo have in October?

In Irmo, the average day length in October is 11h and 19min.

What time are sunrise and sunset in October?

On the first day of October, sunrise is at 7:19 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 6:32 pm EDT.

How long on average sun shines in October?

The average sunshine duration in October is 6.7h.

How high is the UV index in October?

The average daily maximum UV index in October is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to 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 October
Irmo, SC

Average temperature in October - Irmo, SC
  • Average high temperature in October: 73.6°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 October: 55.4°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 October
Irmo, SC

Average pressure in October - Irmo, SC
  • Average pressure in October: 30.04"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 October
Irmo, SC

Average wind speed in October - Irmo, SC
  • Average wind speed in October: 6.8mph

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 October
Irmo, SC

Average humidity in October - Irmo, SC
  • Average humidity in October: 72%

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

Average rainfall in October
Irmo, SC

Average rainfall in October - Irmo, SC
  • Average rainfall in October: 2.05"

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 October
Irmo, SC

Average rainfall days in October - Irmo, SC
  • Average rainfall days in October: 7.8 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 October
Irmo, SC

Average snowfall in October - Irmo, SC
  • Average snowfall in October: 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 October
Irmo, SC

Average snowfall days in October - Irmo, SC
  • Average snowfall days in October: 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 October /
Average sunshine in October
Irmo, SC

Average daylight in October / Average sunshine in October - Irmo, SC
  • Average daylight in October: 11h 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 October: 6h 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).

Average sunshine days in October
Irmo, SC

Average sunshine days in October - Irmo, SC
  • Average sunshine days in October: 21.8 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 October
Irmo, SC

Average UV index in October - Irmo, SC
  • Average UV index in October: 5

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 October
Irmo, SC

Average cloud cover in October - Irmo, SC
  • Average cloud cover in October: 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 October
Irmo, SC

Average visibility in October - Irmo, SC
  • Average visibility in October: 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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