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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, like December, is another subzero cold winter month in Downers Grove, Iowa, with an average temperature varying between 25.2°F (-3.8°C) and 13.3°F (-10.4°C). January, having an average high-temperature of 25.2°F (-3.8°C) and an average low-temperature of 13.3°F (-10.4°C), is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Downers Grove, is another freezing cold month, with temperature in the range of an average high of 28.9°F (-1.7°C) and an average low of 16°F (-8.9°C). During February, the average high-temperature is a still subzero cold 28.9°F (-1.7°C), maintaining a close resemblance to that of the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Downers Grove, is a chilly month, with temperature in the range of an average high of 44.2°F (6.8°C) and an average low of 29.5°F (-1.4°C). With the onset of March, Downers Grove experiences a noticeable temperature shift, with the average high-temperature advancing from a freezing cold 28.9°F (-1.7°C) in February to a chilly 44.2°F (6.8°C). Weather in March »
Weather in April
April is a moderate spring month in Downers Grove, Iowa, with an average temperature varying between 39.9°F (4.4°C) and 56.1°F (13.4°C). April's arrival is marked by an increase in the average high-temperature, moving from a chilly 44.2°F (6.8°C) in March to a refreshing 56.1°F (13.4°C). Weather in April »
Weather in May
May, the last month of the spring in Downers Grove, is an agreeable month, with an average temperature fluctuating between 68.4°F (20.2°C) and 51.1°F (10.6°C). In Downers Grove, the onset of May comes with an increased average high-temperature, moving from April's moderate 56.1°F (13.4°C) to an agreeable 68.4°F (20.2°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Downers Grove, Iowa, with an average temperature varying between 77°F (25°C) and 60.4°F (15.8°C). June's arrival signals a modest temperature shift, moving from an agreeable 68.4°F (20.2°C) in May to a moderately hot 77°F (25°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Downers Grove, Iowa, with an average temperature ranging between min 63.3°F (17.4°C) and max 80.1°F (26.7°C). Downers Grove's warmest month, July, generally records average temperatures ranging from a high of 80.1°F (26.7°C) to a low of 63.3°F (17.4°C). Weather in July »
Weather in August
August, the last month of the summer in Downers Grove, is also a moderately hot month, with an average temperature fluctuating between 60.6°F (15.9°C) and 78.6°F (25.9°C). The average high-temperature during August registers at a still moderately hot 78.6°F (25.9°C), closely corresponding to the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Downers Grove, Iowa, with temperature in the range of an average high of 73°F (22.8°C) and an average low of 54.3°F (12.4°C). Downers Grove's September weather shows a modest shift in high-temperatures, falling from August's warm 78.6°F (25.9°C) to a pleasant 73°F (22.8°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Downers Grove, Iowa, with an average temperature varying between 43.2°F (6.2°C) and 58.6°F (14.8°C). October's onset witnesses a marked shift in the average high-temperature, moving from a pleasant 73°F (22.8°C) in September to a mild 58.6°F (14.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Downers Grove, Iowa, with temperature in the range of an average high of 44.6°F (7°C) and an average low of 31.3°F (-0.4°C). The onset of November is marked by a decrease in temperature, transitioning from a refreshing 58.6°F (14.8°C) in October to a chilly 44.6°F (7°C). Weather in November »
Weather in December
December, the first month of the winter in Downers Grove, is still a freezing cold month, with an average temperature varying between 31.8°F (-0.1°C) and 21.4°F (-5.9°C). Observing a mild shift, the average high-temperature during December reduces from November's chilly 44.6°F (7°C) to a freezing cold 31.8°F (-0.1°C). Weather in December »
[Resources]Frequently asked questions
What part of the year is the coldest in Downers Grove?
The month of January sees the average lowest temperatures in Downers Grove, Iowa, reaching 25.2°F (-3.8°C) at the peak and 13.3°F (-10.4°C) at the low.
What is the most humid month in Downers Grove?
January and February, with an average relative humidity of 86%, are most humid months.
What is the driest month in Downers Grove?
January and February are months with the least rain when the rain falls for 5.2 days and typically aggregates up to 1.26" (32mm) of rain.
How many days does it rain in Downers Grove?
Throughout the year, there are 142.5 rainfall days, and 28.27" (718mm) of precipitation is accumulated.
When does it snow in Downers Grove?
January through April, October through December are months with snowfall in Downers Grove, Iowa.
When does it snow the most in Downers Grove?
January is the month with the most snowfall in Downers Grove. Snow falls for 12.1 days and accumulates 5.04" (128mm) of snow.
How many days does it snow in Downers Grove?
In Downers Grove, during the entire year, snow falls for 43.2 days and aggregates up to 17.17" (436mm) of snow.
What is the month with the least sunshine in Downers Grove?
January has the least sunshine of the year, with an average of 3.8h of sunshine.
What is the month with the lowest UV index in Downers Grove?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
When is Daylight Saving Time (DST) in Downers Grove?
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 Downers Grove?
The month with the most rainfall is May, when the rain falls for 18.6 days and typically aggregates up to 4.25" (108mm) of precipitation.
When it does not snow in Downers Grove?
May through September are months without snowfall in Downers Grove.
When are the longest days in Downers Grove?
June has the longest days of the year in Downers Grove, Iowa, with an average of 15h and 12min of daylight.
What is the month with the highest UV index in Downers Grove?
The months with the highest UV index are June and July, with an average maximum UV index of 6.
What is the warmest month in Downers Grove?
Downers Grove's temperatures tend to reach their peak averages in July, with a high of 80.1°F (26.7°C) and a low of 63.3°F (17.4°C).
What are the months with the most sunshine in Downers Grove?
July and August, with an average of 9.9h of sunshine, are months with the most sunshine.
What is the least humid month in Downers Grove?
October is the least humid month in Downers Grove, with an average relative humidity of 74%.
What is the month with the shortest days in Downers Grove?
The month with the shortest days in Downers Grove is December, with an average of 9h and 12min of daylight.
Average temperature
Downers Grove, IA
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.2°F).
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure
Downers Grove, IA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Downers Grove, IA
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.1mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
7mph - Average wind speed in August:
6.9mph - Average wind speed in September:
8mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity
Downers Grove, IA
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Downers Grove, IA
- Average rainfall in January:
1.26" - Average rainfall in February:
1.26" - Average rainfall in March:
1.85" - Average rainfall in April:
3.15" - Average rainfall in May:
4.25" - Average rainfall in June:
3.78"
- Average rainfall in July:
2.83" - Average rainfall in August:
1.77" - Average rainfall in September:
2.52" - Average rainfall in October:
2.52" - Average rainfall in November:
1.65" - Average rainfall in December:
1.42"
The wettest month (with the highest rainfall) is May (4.25").
The driest months (with the least rainfall) are January and February (1.26").
Average rainfall days
Downers Grove, IA
- Average rainfall days in January:
5.2 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
16 days - Average rainfall days in May:
18.6 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
12.5 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
11.9 days - Average rainfall days in November:
8.9 days - Average rainfall days in December:
7.7 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (5.2 days).
Average snowfall
Downers Grove, IA
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Downers Grove, IA
- Average snowfall days in January:
12.1 days - Average snowfall days in February:
9.5 days - Average snowfall days in March:
6 days - Average snowfall days in April:
1.6 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:
0.6 days - Average snowfall days in November:
4 days - Average snowfall days in December:
9.4 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Downers Grove, IA
- Average daylight in January:
9h and 3min - 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 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 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 2min - Average sunshine in April:
7h and 3min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Downers Grove, IA
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
11.1 days - Average sunshine days in May:
10.6 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
16.7 days - Average sunshine days in September:
17 days - Average sunshine days in October:
16.9 days - Average sunshine days in November:
16.8 days - Average sunshine days in December:
16.7 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).
Average UV index
Downers Grove, IA
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
Downers Grove, IA
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Downers Grove, IA
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Downers Grove, Iowa, USA
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