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, the same as December, in Irwin, South Carolina, is another chilly winter month, with an average temperature ranging between max 49.8°F (9.9°C) and min 35.2°F (1.8°C). With an average high-temperature of 49.8°F (9.9°C) and an average low-temperature of 35.2°F (1.8°C), January is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a cool month in Irwin, South Carolina, with an average temperature varying between 38.1°F (3.4°C) and 55°F (12.8°C). In February, the average high-temperature is essentially the same as in January - a fresh 55°F (12.8°C). Weather in February »
Weather in March
The first month of the spring, March, is a comfortable month in Irwin, South Carolina, with temperature in the range of an average high of 62.1°F (16.7°C) and an average low of 44.2°F (6.8°C). In Irwin, the average high-temperature in March slightly increases from a cool 55°F (12.8°C) in February to an enjoyable 62.1°F (16.7°C). Weather in March »
Weather in April
April is an agreeable spring month in Irwin, South Carolina, with temperature in the range of an average low of 53.2°F (11.8°C) and an average high of 71.6°F (22°C). In April, the average high-temperature rises from a comfortable 62.1°F (16.7°C) in March to an agreeable 71.6°F (22°C). Weather in April »
Weather in May
May, the last month of the spring in Irwin, is a moderately hot month, with an average temperature varying between 79.9°F (26.6°C) and 61°F (16.1°C). In May, the average high-temperature slightly increases from a pleasant 71.6°F (22°C) in April to a moderately hot 79.9°F (26.6°C). Weather in May »
Weather in June
June, the first month of the summer in Irwin, is a tropical month, with an average temperature ranging between min 68.2°F (20.1°C) and max 87.3°F (30.7°C). In June, the average high-temperature slightly increases from a warm 79.9°F (26.6°C) in May to a tropical 87.3°F (30.7°C). Weather in June »
Weather in July
July, the same as June, in Irwin, South Carolina, is another hot summer month, with an average temperature varying between 71.2°F (21.8°C) and 90.3°F (32.4°C). July is the warmest month, with an average high-temperature of 90.3°F (32.4°C) and an average low-temperature of 71.2°F (21.8°C). In July, the average heat index is estimated at a scorching 107.6°F (42°C). Weather in July »
Weather in August
The last month of the summer, August, is also a hot month in Irwin, South Carolina, with temperature in the range of an average high of 88.3°F (31.3°C) and an average low of 69.8°F (21°C). In Irwin, the average high-temperature in August is practically the same as in July - a still tropical 88.3°F (31.3°C). Weather in August »
Weather in September
September, the first month of the autumn in Irwin, is also a moderately hot month, with an average temperature varying between 64.9°F (18.3°C) and 82.9°F (28.3°C). In September, the average high-temperature marginally drops from a tropical 88.3°F (31.3°C) in August to a warm 82.9°F (28.3°C). Weather in September »
Weather in October
October, like September, is an agreeable autumn month in Irwin, South Carolina, with an average temperature varying between 71.8°F (22.1°C) and 54.1°F (12.3°C). In October, the average high-temperature drops from a warm 82.9°F (28.3°C) in September to a pleasant 71.8°F (22.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is another mild month in Irwin, South Carolina, with an average temperature fluctuating between 60.4°F (15.8°C) and 43.5°F (6.4°C). In November, the average high-temperature drops from a pleasant 71.8°F (22.1°C) in October to a mild 60.4°F (15.8°C). Weather in November »
Weather in December
December, the first month of the winter in Irwin, is also a fresh month, with an average temperature fluctuating between 39.7°F (4.3°C) and 54.1°F (12.3°C). In Irwin, the average high-temperature in December marginally drops from a mild 60.4°F (15.8°C) in November to a fresh 54.1°F (12.3°C). Weather in December »
[Resources]FAQ
What is the coldest month in Irwin?
January is the coldest month in Irwin, South Carolina, with an average high-temperature of 49.8°F (9.9°C) and an average low-temperature of 35.2°F (1.8°C).
How much does it rain in Irwin?
Throughout the year, there are 120.6 rainfall days, and 11.97" (304mm) of precipitation is accumulated.
When does it snow in Irwin?
January and February are months with snowfall in Irwin, South Carolina.
How many days does it snow in Irwin?
In Irwin, during the entire year, snow falls for 1.2 days and aggregates up to 0.2" (5mm) of snow.
When is the lowest UV index in Irwin?
With an average maximum UV index of 2, January is the month with the lowest UV index.
What is the snowiest month in Irwin?
The month with the most snowfall is February, when snow falls for 0.5 days and typically aggregates up to 0.12" (3mm) of snow.
When it does not snow in Irwin?
March through December are months without snowfall in Irwin, South Carolina.
When is Daylight Saving Time (DST) in Irwin?
On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from EDT to EST.
What are the most humid months in Irwin?
The months with the highest humidity are May and December, with an average relative humidity of 75%.
What is the least humid month in Irwin?
June, July and November, with an average relative humidity of 71%, are the least humid months in Irwin.
When are the longest days in Irwin?
June has the longest days of the year, with an average of 14h and 27min of daylight.
What are the months with the highest UV index in Irwin?
June and July, with an average maximum UV index of 7, are months with the highest UV index.
What is the warmest month in Irwin?
July is the warmest month in Irwin, South Carolina, with an average high-temperature of 90.3°F (32.4°C) and an average low-temperature of 71.2°F (21.8°C).
What month has the most sunshine in Irwin?
With an average of 10.9h of sunshine, July has the most sunshine of the year.
What is the rainiest month in Irwin?
August is the month with the most rainfall in Irwin, South Carolina. Rain falls for 13.2 days and accumulates 1.61" (41mm) of precipitation.
What is the driest month in Irwin?
The month with the least rainfall in Irwin is September, when the rain falls for 9.6 days and typically collects 0.51" (13mm) of precipitation.
What is the month with the shortest days in Irwin?
December has the shortest days of the year in Irwin, South Carolina, with an average of 9h and 53min of daylight.
What is the month with the least sunshine in Irwin?
The month with the least sunshine is December, with an average of 5.5h of sunshine.
Average temperature
Irwin, SC
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (49.8°F).
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure
Irwin, 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:
30.01"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
29.97"Hg
- Average pressure in July:
29.99"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.15"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed
Irwin, SC
- Average wind speed in January:
7.5mph - Average wind speed in February:
8mph - Average wind speed in March:
7.9mph - Average wind speed in April:
8mph - Average wind speed in May:
6.5mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
5.3mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.5mph - Average wind speed in November:
6.6mph - Average wind speed in December:
6.9mph
The windiest months (with the highest average wind speed) are February and April (8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
Irwin, SC
The months with the highest relative humidity are May and December (75%).
The months with the lowest relative humidity are June, July and November (71%).
Average rainfall
Irwin, SC
- Average rainfall in January:
0.79" - Average rainfall in February:
0.75" - Average rainfall in March:
0.91" - Average rainfall in April:
1.02" - Average rainfall in May:
1.14" - Average rainfall in June:
1.22"
- Average rainfall in July:
1.54" - Average rainfall in August:
1.61" - Average rainfall in September:
0.51" - Average rainfall in October:
0.71" - Average rainfall in November:
0.75" - Average rainfall in December:
1.02"
The wettest month (with the highest rainfall) is August (1.61").
The driest month (with the least rainfall) is September (0.51").
Average rainfall days
Irwin, SC
- Average rainfall days in January:
7.7 days - Average rainfall days in February:
8 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
10.9 days - Average rainfall days in May:
11.8 days - Average rainfall days in June:
12.8 days
- Average rainfall days in July:
14.9 days - Average rainfall days in August:
13.2 days - Average rainfall days in September:
9.6 days - Average rainfall days in October:
6.5 days - Average rainfall days in November:
5.9 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is November (5.9 days).
Average snowfall
Irwin, SC
The month with the highest snowfall is February (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days
Irwin, SC
- Average snowfall days in January:
0.4 days - Average snowfall days in February:
0.5 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 (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Irwin, SC
- Average daylight in January:
10h and 8min - Average daylight in February:
10h and 58min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 5min - Average daylight in May:
13h and 59min - Average daylight in June:
14h and 27min
- Average daylight in July:
14h and 13min - Average daylight in August:
13h and 25min - Average daylight in September:
12h and 23min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 22min - Average daylight in December:
9h and 53min
The month with the longest days is June (Average daylight: 14h and 27min).
The month with the shortest days is December (Average daylight: 9h and 53min).
- Average sunshine in January:
5h and 36min - Average sunshine in February:
6h and 24min - Average sunshine in March:
7h and 18min - Average sunshine in April:
9h and 12min - Average sunshine in May:
9h and 54min - Average sunshine in June:
10h and 48min
- Average sunshine in July:
10h and 54min - Average sunshine in August:
10h and 24min - Average sunshine in September:
8h and 54min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 48min - Average sunshine in December:
5h and 30min
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
Irwin, SC
- Average sunshine days in January:
21.8 days - Average sunshine days in February:
18.3 days - Average sunshine days in March:
18.5 days - Average sunshine days in April:
16.9 days - Average sunshine days in May:
16.3 days - Average sunshine days in June:
14.6 days
- Average sunshine days in July:
12.9 days - Average sunshine days in August:
14.7 days - Average sunshine days in September:
18.3 days - Average sunshine days in October:
23.5 days - Average sunshine days in November:
21.9 days - Average sunshine days in December:
20.6 days
The month with the most sunshine days is October (23.5 days).
The month with the least sunshine days is July (12.9 days).
Average UV index
Irwin, SC
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
Irwin, SC
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility
Irwin, 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).
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