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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 Marengo, Illinois, with an average temperature ranging between min 13.8°F (-10.1°C) and max 26.1°F (-3.3°C). The coldest month is January, with an average high-temperature of 26.1°F (-3.3°C) and an average low-temperature of 13.8°F (-10.1°C). Weather in January »
Weather in February
February, the last month of the winter in Marengo, is another freezing cold month, with an average temperature varying between 17.1°F (-8.3°C) and 30°F (-1.1°C). The commencement of February records an average high-temperature of a still subzero cold 30°F (-1.1°C), barely varying from January's 26.1°F (-3.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Marengo, Illinois, with an average temperature varying between 43.7°F (6.5°C) and 29.1°F (-1.6°C). In Marengo, the average high-temperature in March rises, from a subzero cold 30°F (-1.1°C) in February, to a frosty 43.7°F (6.5°C). Weather in March »
Weather in April
April is a refreshing spring month in Marengo, Illinois, with an average temperature fluctuating between 38.8°F (3.8°C) and 55.6°F (13.1°C). The onset of April marks an increase in the average high-temperature, moving from a chilly 43.7°F (6.5°C) in March to a moderate 55.6°F (13.1°C). Weather in April »
Weather in May
May, the last month of the spring in Marengo, is a comfortable month, with temperature in the range of an average low of 50.2°F (10.1°C) and an average high of 67.6°F (19.8°C). As Marengo transitions into May, a rise in the average high-temperature is observed, moving from 55.6°F (13.1°C) in April to a still refreshing 67.6°F (19.8°C). Weather in May »
Weather in June
June, the first month of the summer in Marengo, is a moderately hot month, with an average temperature fluctuating between 76.5°F (24.7°C) and 59°F (15°C). The shift into June is marked by a modest rise in the average high-temperature, moving from May's comfortable 67.6°F (19.8°C) to a warm 76.5°F (24.7°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Marengo, Illinois, with an average temperature ranging between min 62.6°F (17°C) and max 79.7°F (26.5°C). Marengo's warmest month, July, registers temperatures that range from a high of 79.7°F (26.5°C) to a low of 62.6°F (17°C). Weather in July »
Weather in August
August, the last month of the summer in Marengo, is also a moderately hot month, with temperature in the range of an average high of 78.1°F (25.6°C) and an average low of 60.4°F (15.8°C). The advent of August denotes an average high-temperature of a still warm 78.1°F (25.6°C), subtly different from July's 79.7°F (26.5°C). Weather in August »
Weather in September
September, the first month of the autumn in Marengo, is still a pleasant month, with an average temperature varying between 54.1°F (12.3°C) and 72.1°F (22.3°C). The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a warm 78.1°F (25.6°C) in August to an agreeable 72.1°F (22.3°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Marengo, Illinois, with an average temperature ranging between max 58.8°F (14.9°C) and min 43.2°F (6.2°C). The commencement of October involves a temperature shift, with the average high-temperature dropping from a pleasant 72.1°F (22.3°C) in September to a mild 58.8°F (14.9°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Marengo, Illinois, with temperature in the range of an average low of 31.1°F (-0.5°C) and an average high of 44.4°F (6.9°C). November signals a clear temperature drop, with average high-temperatures decreasing from October's mild 58.8°F (14.9°C) to a chilly 44.4°F (6.9°C). Weather in November »
Weather in December
December, the first month of the winter in Marengo, is also an icy month, with an average temperature ranging between min 22.3°F (-5.4°C) and max 32.5°F (0.3°C). Stepping into December, Marengo observes a temperature decline, with the average high falling from November's chilly 44.4°F (6.9°C) to a wintry 32.5°F (0.3°C). Weather in December »
[Resources]Frequently asked questions
What time of the year is the coldest in Marengo?
During the coldest month in Marengo, January, temperatures average a high of 26.1°F (-3.3°C) and a low of 13.8°F (-10.1°C).
What is the most humid month in Marengo?
The most humid month is January, with an average relative humidity of 86%.
How many days does it rain in Marengo?
Throughout the year, there are 154.6 rainfall days, and 30.31" (770mm) of precipitation is accumulated.
When does it snow in Marengo?
Months with snowfall in Marengo are January through April, October through December.
What is the snowiest month in Marengo?
January is the month with the most snowfall in Marengo, Illinois. Snow falls for 12.3 days and accumulates 5.28" (134mm) of snow.
How much does it snow in Marengo?
Throughout the year, there are 44.9 snowfall days, and 17.24" (438mm) of snow is accumulated.
What is the month with the least sunshine in Marengo?
January has the least sunshine of the year, with an average of 3.6h of sunshine.
What are the months with the lowest UV index in Marengo?
The months with the lowest UV index in Marengo are January and December, with an average maximum UV index of 1.
What is the driest month in Marengo?
February and November are months with the least rain in Marengo when the rain falls for 4.8 days and typically aggregates up to 1.5" (38mm) of rain.
When is Daylight Saving Time (DST) in Marengo?
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.
When it does not snow in Marengo?
May through September are months without snowfall.
What are the months with the highest UV index in Marengo?
May through August, with an average maximum UV index of 5, are months with the highest UV index.
What is the rainiest month in Marengo?
The month with the most rainfall is June, when the rain falls for 18.6 days and typically aggregates up to 4.21" (107mm) of precipitation.
When are the longest days in Marengo?
June has the longest days of the year, with an average of 15h and 12min of daylight.
What time of the year is the hottest in Marengo?
Marengo's warmest weather arrives in July, when temperatures average a high of 79.7°F (26.5°C) and a low of 62.6°F (17°C).
What month has the most sunshine in Marengo?
The month with the most sunshine in Marengo is July, with an average of 9.6h of sunshine.
What is the least humid month in Marengo?
With an average relative humidity of 76%, October is the least humid month in Marengo.
What is the month with the shortest days in Marengo?
With an average of 9h and 12min of daylight, December has the shortest days of the year in Marengo.
Average temperature
Marengo, IL
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (26.1°F).
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure
Marengo, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Marengo, IL
- Average wind speed in January:
9.7mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.5mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.1mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.6mph - Average wind speed in November:
9.3mph - Average wind speed in December:
9.1mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity
Marengo, IL
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (76%).
Average rainfall
Marengo, IL
- Average rainfall in January:
1.61" - Average rainfall in February:
1.5" - Average rainfall in March:
1.77" - Average rainfall in April:
3.54" - Average rainfall in May:
3.74" - Average rainfall in June:
4.21"
The wettest month (with the highest rainfall) is June (4.21").
The driest months (with the least rainfall) are February and November (1.5").
Average rainfall days
Marengo, IL
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
4.8 days - Average rainfall days in March:
11.5 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
18.8 days - Average rainfall days in June:
18.6 days
- Average rainfall days in July:
19.3 days - Average rainfall days in August:
16.1 days - Average rainfall days in September:
12.8 days - Average rainfall days in October:
13.3 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
8 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (4.8 days).
Average snowfall
Marengo, IL
The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Marengo, IL
- Average snowfall days in January:
12.3 days - Average snowfall days in February:
10.4 days - Average snowfall days in March:
5.5 days - Average snowfall days in April:
2 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:
0.5 days - Average snowfall days in November:
4 days - Average snowfall days in December:
10.2 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Marengo, IL
- 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 4min - Average sunshine in February:
3h and 4min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 3min - Average sunshine in September:
8h and 3min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Marengo, IL
- Average sunshine days in January:
14.8 days - Average sunshine days in February:
14.1 days - Average sunshine days in March:
15.2 days - Average sunshine days in April:
11.3 days - Average sunshine days in May:
10.6 days - Average sunshine days in June:
9.5 days
- Average sunshine days in July:
9.8 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
14.8 days - Average sunshine days in October:
16.4 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
16.5 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (9.5 days).
Average UV index
Marengo, IL
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Marengo, IL
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility
Marengo, IL
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Marengo, Illinois, USA
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