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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 Iroquois, Illinois, is a freezing cold winter month, with temperature in the range of an average low of 18.9°F (-7.3°C) and an average high of 30.7°F (-0.7°C). January, having an average high-temperature of 30.7°F (-0.7°C) and an average low-temperature of 18.9°F (-7.3°C), is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Iroquois, is a cold month, with temperature in the range of an average high of 35.1°F (1.7°C) and an average low of 22.3°F (-5.4°C). The dawn of February sees an average high-temperature of an icy 35.1°F (1.7°C), subtly contrasting with January's 30.7°F (-0.7°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Iroquois, Illinois, with an average temperature ranging between max 47.8°F (8.8°C) and min 33.4°F (0.8°C). March signals a shift in the average high-temperature, moving from February's wintry 35.1°F (1.7°C) to a frosty 47.8°F (8.8°C). Weather in March »
Weather in April
April in Iroquois, Illinois, is a refreshing spring month, with an average temperature ranging between max 59.4°F (15.2°C) and min 43.5°F (6.4°C). April brings a rise in the average high-temperature, transitioning from March's frosty 47.8°F (8.8°C) to a refreshing 59.4°F (15.2°C). Weather in April »
Weather in May
May, the last month of the spring in Iroquois, is a pleasant month, with temperature in the range of an average low of 54.5°F (12.5°C) and an average high of 71.4°F (21.9°C). With the onset of May, Iroquois sees a temperature rise, with the average high-temperature moving from April's moderate 59.4°F (15.2°C) to an agreeable 71.4°F (21.9°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Iroquois, Illinois, with temperature in the range of an average low of 62.4°F (16.9°C) and an average high of 79.3°F (26.3°C). As June sets, the average high-temperature shows a slight increase, moving up from a pleasant 71.4°F (21.9°C) in May to a warm 79.3°F (26.3°C). Weather in June »
Weather in July
July, like June, in Iroquois, Illinois, is a moderately hot summer month, with an average temperature ranging between min 64.2°F (17.9°C) and max 81°F (27.2°C). Iroquois's warmest month, July, registers temperatures that range from a high of 81°F (27.2°C) to a low of 64.2°F (17.9°C). The heat index in July is evaluated at a hot 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Iroquois, is also a moderately hot month, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 79.5°F (26.4°C). The advent of August reveals an average high-temperature of a still moderately hot 79.5°F (26.4°C), showing minimal difference from the prior month. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Iroquois, Illinois, with an average temperature fluctuating between 56.8°F (13.8°C) and 75°F (23.9°C). The start of September sees the average high-temperature at a still moderately hot 75°F (23.9°C), showing little difference from August's 79.5°F (26.4°C). Weather in September »
Weather in October
October, like September, in Iroquois, Illinois, is another enjoyable autumn month, with an average temperature fluctuating between 46.9°F (8.3°C) and 62.2°F (16.8°C). Iroquois's transition into October involves a shift in temperature, receding from a warm 75°F (23.9°C) in September to a comfortable 62.2°F (16.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Iroquois, Illinois, with temperature in the range of an average high of 47.8°F (8.8°C) and an average low of 34.7°F (1.5°C). The start of November signals a considerable reduction in the average high-temperature, receding from an enjoyable 62.2°F (16.8°C) in October to a frosty 47.8°F (8.8°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Iroquois, Illinois, with an average temperature ranging between max 36.7°F (2.6°C) and min 26.6°F (-3°C). Iroquois experiences a temperature shift at the start of December, with average high-temperatures adjusting from a frosty 47.8°F (8.8°C) in November to a wintry 36.7°F (2.6°C). Weather in December »
[Resources]Frequently asked questions
What month is the coldest in Iroquois?
Iroquois's coldest weather arrives in January, when temperatures average a high of 30.7°F (-0.7°C) and a low of 18.9°F (-7.3°C).
What is the driest month in Iroquois?
The months with the least rainfall are January and February Rain falls for 4.9 days and accumulates 0.79" (20mm) of rain.
How many days does it rain in Iroquois?
Throughout the year, there are 140.3 rainfall days, and 17.56" (446mm) of precipitation is accumulated.
When does it snow in Iroquois?
Months with snowfall are January through April, November and December.
When does it snow the most in Iroquois?
January is the month with the most snowfall. Snow falls for 10.3 days and accumulates 2.05" (52mm) of snow.
How much does it snow in Iroquois?
Throughout the year, in Iroquois, there are 36.9 snowfall days, and 7.56" (192mm) of snow is accumulated.
What is the month with the least sunshine in Iroquois?
The month with the least sunshine in Iroquois, Illinois, is January, with an average of 3.7h of sunshine.
When is the lowest UV index in Iroquois?
January and December, with an average maximum UV index of 1, are months with the lowest UV index.
When is Daylight Saving Time (DST) in Iroquois?
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 wettest month in Iroquois?
The month with the most rainfall in Iroquois, Illinois, is May, when the rain falls for 17.5 days and typically aggregates up to 2.64" (67mm) of precipitation.
When it does not snow in Iroquois?
In Iroquois, snow does not fall in May through October.
When are the longest days in Iroquois?
The month with the longest days in Iroquois is June, with an average of 15h and 6min of daylight.
What are the months with the most sunshine in Iroquois?
The months with the most sunshine are June and July, with an average of 9.8h of sunshine.
When is the highest UV index in Iroquois?
June and July, with an average maximum UV index of 6, are months with the highest UV index in Iroquois.
What month is the hottest in Iroquois?
The warmest temperatures in Iroquois occur during July, when averages reach a peak of 81°F (27.2°C) and a low of 64.2°F (17.9°C).
What is the most humid month in Iroquois?
The most humid month in Iroquois, Illinois, is July, with an average relative humidity of 85%.
What is the least humid month in Iroquois?
The least humid month in Iroquois is October, with an average relative humidity of 72%.
What is the month with the shortest days in Iroquois?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Iroquois, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.7°F).
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure
Iroquois, IL
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Iroquois, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10mph - Average wind speed in March:
9.8mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.1mph - Average wind speed in October:
9mph - Average wind speed in November:
9.7mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity
Iroquois, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Iroquois, IL
- Average rainfall in January:
0.79" - Average rainfall in February:
0.79" - Average rainfall in March:
1.38" - Average rainfall in April:
1.97" - Average rainfall in May:
2.64" - Average rainfall in June:
2.24"
- Average rainfall in July:
2.01" - Average rainfall in August:
1.73" - Average rainfall in September:
1.1" - Average rainfall in October:
1.14" - Average rainfall in November:
0.87" - Average rainfall in December:
0.91"
The wettest month (with the highest rainfall) is May (2.64").
The driest months (with the least rainfall) are January and February (0.79").
Average rainfall days
Iroquois, IL
- Average rainfall days in January:
4.9 days - Average rainfall days in February:
5.5 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
14.7 days - Average rainfall days in September:
11.3 days - Average rainfall days in October:
11.2 days - Average rainfall days in November:
8.1 days - Average rainfall days in December:
6.6 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (4.9 days).
Average snowfall
Iroquois, IL
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Iroquois, IL
- Average snowfall days in January:
10.3 days - Average snowfall days in February:
8.9 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
1.3 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:
0.4 days - Average snowfall days in November:
3.2 days - Average snowfall days in December:
8 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Iroquois, IL
- Average daylight in January:
9h and 4min - 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 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 3min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 1min
The months with the most sunshine are June and July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Iroquois, IL
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
14 days - Average sunshine days in March:
15.4 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
11 days - Average sunshine days in June:
10.9 days
- Average sunshine days in July:
9.4 days - Average sunshine days in August:
12.6 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
17.4 days - Average sunshine days in November:
19 days - Average sunshine days in December:
17.4 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (9.4 days).
Average UV index
Iroquois, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Iroquois, IL
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 34).
Average visibility
Iroquois, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Iroquois, Illinois, USA
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