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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, the same as December, in Irene, South Dakota, is a freezing cold winter month, with an average temperature fluctuating between 26.8°F (-2.9°C) and 12.9°F (-10.6°C). January stands out as Irene's coldest month, with temperatures ranging between an average high of 26.8°F (-2.9°C) and a low of 12.9°F (-10.6°C). Weather in January »
Weather in February
The last month of the winter, February, is another freezing cold month in Irene, South Dakota, with an average temperature fluctuating between 16.3°F (-8.7°C) and 30.6°F (-0.8°C). The high-temperature average in February for Irene, South Dakota, is a still subzero cold 30.6°F (-0.8°C), staying closely aligned with January's conditions. Weather in February »
Weather in March
March, the first month of the spring in Irene, is a chilly month, with temperature in the range of an average low of 30.2°F (-1°C) and an average high of 46.9°F (8.3°C). In March, the meteorological conditions markedly change with the average high-temperature ascending from a freezing cold 30.6°F (-0.8°C) in February to a frosty 46.9°F (8.3°C). Weather in March »
Weather in April
April in Irene, South Dakota, is a mild spring month, with temperature in the range of an average low of 40.1°F (4.5°C) and an average high of 57.9°F (14.4°C). April brings a rise in the average high-temperature, transitioning from March's chilly 46.9°F (8.3°C) to a refreshing 57.9°F (14.4°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Irene, South Dakota, with an average temperature fluctuating between 50.9°F (10.5°C) and 69.1°F (20.6°C). The rise of average high-temperatures is seen in May, with an increase from a mild 57.9°F (14.4°C) in April to a pleasant 69.1°F (20.6°C). Weather in May »
Weather in June
June, the first month of the summer in Irene, is a moderately hot month, with temperature in the range of an average low of 61.7°F (16.5°C) and an average high of 79.7°F (26.5°C). In Irene, stepping into June brings a temperature increase, moving up from May's agreeable 69.1°F (20.6°C) to a moderately hot 79.7°F (26.5°C). Weather in June »
Weather in July
July, like June, in Irene, South Dakota, is a moderately hot summer month, with temperature in the range of an average high of 84.9°F (29.4°C) and an average low of 64.9°F (18.3°C). In Irene, the peak average temperatures are observed in July, with a high of 84.9°F (29.4°C) and a low of 64.9°F (18.3°C). Throughout July, the heat index is computed to be a tropical 93.2°F (34°C). Weather in July »
Weather in August
August, the last month of the summer in Irene, is also a moderately hot month, with an average temperature ranging between min 61.3°F (16.3°C) and max 83.3°F (28.5°C). Irene marks the start of August with an average high-temperature of a still warm 83.3°F (28.5°C), hinting at a slight fluctuation from July's 84.9°F (29.4°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Irene, South Dakota, with temperature in the range of an average low of 55°F (12.8°C) and an average high of 76.1°F (24.5°C). The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a moderately hot 83.3°F (28.5°C) in August to a still warm 76.1°F (24.5°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Irene, South Dakota, with an average temperature fluctuating between 59.4°F (15.2°C) and 42.6°F (5.9°C). With the onset of October, Irene experiences a noticeable temperature shift, with the average high-temperature receding from a moderately hot 76.1°F (24.5°C) in September to a moderate 59.4°F (15.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Irene, is another chilly month, with temperature in the range of an average high of 45.9°F (7.7°C) and an average low of 30.7°F (-0.7°C). The onset of November coincides with a reduction in the average high-temperature, falling from a moderate 59.4°F (15.2°C) in October to a chilly 45.9°F (7.7°C). Weather in November »
Weather in December
December, the first month of the winter in Irene, is also a subzero cold month, with temperature in the range of an average high of 29.8°F (-1.2°C) and an average low of 18°F (-7.8°C). A distinct shift in the average high-temperature is signaled in December, moving down from a chilly 45.9°F (7.7°C) in November to a subzero cold 29.8°F (-1.2°C). Weather in December »
Updated: Feb 14, 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 is the coldest month in Irene?
January is Irene's coldest month, registering average high temperatures of 26.8°F (-2.9°C) and lows of 12.9°F (-10.6°C).
What is the most humid month in Irene?
The most humid month is January, with an average relative humidity of 85%.
How many days does it rain in Irene?
Throughout the year, in Irene, South Dakota, there are 117.9 rainfall days, and 21.93" (557mm) of precipitation is accumulated.
When does it snow in Irene?
Months with snowfall in Irene are January through May, October through December.
How many days does it snow in Irene?
Throughout the year, in Irene, South Dakota, there are 37.4 snowfall days, and 14.45" (367mm) of snow is accumulated.
What is the month with the least sunshine in Irene?
The month with the least sunshine in Irene is January, with an average of 4.4h of sunshine.
When is the lowest UV index in Irene?
With an average maximum UV index of 1, January is the month with the lowest UV index.
What is the driest month in Irene?
The month with the least rainfall in Irene, South Dakota, is February, when the rain falls for 2.3 days and typically collects 0.59" (15mm) of precipitation.
When is Daylight Saving Time (DST) in Irene?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the rainiest month in Irene?
The month with the most rainfall is May, when the rain falls for 16.9 days and typically aggregates up to 3.78" (96mm) of precipitation.
When it does not snow in Irene?
June through September are months without snowfall in Irene, South Dakota.
When are the longest days in Irene?
With an average of 15h and 18min of daylight, June has the longest days of the year in Irene.
What are the months with the highest UV index in Irene?
The months with the highest UV index in Irene, South Dakota, are June through August, with an average maximum UV index of 6.
What is the hottest time of year in Irene?
July temperatures in Irene tend to peak at an average high of 84.9°F (29.4°C) and dip to a low of 64.9°F (18.3°C).
What month has the most sunshine in Irene?
The month with the most sunshine in Irene, South Dakota, is July, with an average of 10.8h of sunshine.
What is the least humid month in Irene?
With an average relative humidity of 64%, October is the least humid month in Irene.
What is the snowiest month in Irene?
December is the month with the most snowfall. Snow falls for 8.1 days and accumulates 2.95" (75mm) of snow.
What is the month with the shortest days in Irene?
With an average of 9h and 6min of daylight, December has the shortest days of the year in Irene, South Dakota.
Average temperature
Irene, SD
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (26.8°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure
Irene, SD
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.15"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed
Irene, SD
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.8mph - Average wind speed in April:
11.1mph - Average wind speed in May:
9.6mph - Average wind speed in June:
8.8mph
- Average wind speed in July:
7.9mph - Average wind speed in August:
8.2mph - Average wind speed in September:
9.2mph - Average wind speed in October:
10.3mph - Average wind speed in November:
10.2mph - Average wind speed in December:
10.3mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity
Irene, SD
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (64%).
Average rainfall
Irene, SD
- Average rainfall in January:
0.67" - Average rainfall in February:
0.59" - Average rainfall in March:
1.34" - Average rainfall in April:
2.4" - Average rainfall in May:
3.78" - Average rainfall in June:
3.31"
- Average rainfall in July:
2.24" - Average rainfall in August:
2.24" - Average rainfall in September:
1.81" - Average rainfall in October:
1.73" - Average rainfall in November:
0.63" - Average rainfall in December:
1.18"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days
Irene, SD
- Average rainfall days in January:
3.4 days - Average rainfall days in February:
2.3 days - Average rainfall days in March:
8.8 days - Average rainfall days in April:
12.2 days - Average rainfall days in May:
16.9 days - Average rainfall days in June:
17.4 days
- Average rainfall days in July:
13.4 days - Average rainfall days in August:
14.2 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
9.3 days - Average rainfall days in November:
4.7 days - Average rainfall days in December:
3.7 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.3 days).
Average snowfall
Irene, SD
- Average snowfall in January:
2.6" - Average snowfall in February:
2.52" - Average snowfall in March:
2.09" - Average snowfall in April:
2.13" - Average snowfall in May:
0.31" - Average snowfall in June:
0"
The month with the highest snowfall is December (2.95").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Irene, SD
- Average snowfall days in January:
9.7 days - Average snowfall days in February:
7.8 days - Average snowfall days in March:
5.3 days - Average snowfall days in April:
2.4 days - Average snowfall days in May:
0.2 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:
0.8 days - Average snowfall days in November:
3.1 days - Average snowfall days in December:
8.1 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Irene, SD
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
5h and 2min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 5min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 5min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Irene, SD
- Average sunshine days in January:
19.3 days - Average sunshine days in February:
17.8 days - Average sunshine days in March:
16.7 days - Average sunshine days in April:
14.8 days - Average sunshine days in May:
11.6 days - Average sunshine days in June:
9.3 days
- Average sunshine days in July:
13 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
19.5 days - Average sunshine days in November:
21.5 days - Average sunshine days in December:
21.3 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.3 days).
Average UV index
Irene, SD
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Irene, SD
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility
Irene, SD
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).
Irene, South Dakota, USA
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