Climate and monthly weather forecastMounds, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Mounds, Illinois, with an average temperature fluctuating between 41.2°F (5.1°C) and 28.4°F (-2°C). The coldest time of the year is January, with temperatures averaging a high of 41.2°F (5.1°C) and a low of 28.4°F (-2°C). Weather in January »Weather in February
February, the last month of the winter in Mounds, is a chilly month, with an average temperature fluctuating between 31.8°F (-0.1°C) and 45.7°F (7.6°C). Upon the onset of February, Mounds witnesses an average high-temperature of a chilly 45.7°F (7.6°C), showing a close resemblance to the prior month. Weather in February »Weather in March
March, the first month of the spring in Mounds, is a refreshing month, with an average temperature varying between 40.6°F (4.8°C) and 56.8°F (13.8°C). The shift from February to March brings an increase in the average high-temperature, moving from a chilly 45.7°F (7.6°C) to a moderate 56.8°F (13.8°C). Weather in March »Weather in April
April is a refreshing spring month in Mounds, Illinois, with an average temperature varying between 50.2°F (10.1°C) and 67.6°F (19.8°C). Observing a rise in April, the average high-temperature goes from March's moderate 56.8°F (13.8°C) to an enjoyable 67.6°F (19.8°C). Weather in April »Weather in May
May, the last month of the spring in Mounds, is a moderately hot month, with an average temperature ranging between max 76.6°F (24.8°C) and min 59.5°F (15.3°C). Mounds in May sees a temperature change, with average high-temperatures moving from an enjoyable 67.6°F (19.8°C) in April to a warm 76.6°F (24.8°C). Weather in May »Weather in June
The first month of the summer, June, is a hot month in Mounds, Illinois, with an average temperature varying between 67.6°F (19.8°C) and 86°F (30°C). Mounds sees an increase in the average high-temperature with the arrival of June, moving from May's moderately hot 76.6°F (24.8°C) to a tropical 86°F (30°C). Weather in June »Weather in July
July, like June, is a hot summer month in Mounds, Illinois, with an average temperature ranging between min 69.8°F (21°C) and max 88.2°F (31.2°C). Mounds experiences its highest temperatures in July, with an average peak of 88.2°F (31.2°C) and a low of 69.8°F (21°C). In July, the average heat index is computed to be a blistering 104°F (40°C). Weather in July »Weather in August
August, the last month of the summer in Mounds, is another hot month, with an average temperature varying between 86.4°F (30.2°C) and 67.5°F (19.7°C). Mounds's average high-temperature in August is a still tropical 86.4°F (30.2°C), marking an insignificant difference from the 88.2°F (31.2°C) of July. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Mounds, Illinois, with an average temperature ranging between min 61.9°F (16.6°C) and max 81.5°F (27.5°C). The arrival of September brings an average high-temperature of a warm 81.5°F (27.5°C), subtly diverging from August's 86.4°F (30.2°C). Weather in September »Weather in October
October, the same as September, in Mounds, Illinois, is an agreeable autumn month, with an average temperature fluctuating between 51.1°F (10.6°C) and 68.9°F (20.5°C). As Mounds enters October, the average high-temperature decreases from the a moderately hot 81.5°F (27.5°C) of September to an agreeable 68.9°F (20.5°C). Weather in October »Weather in November
November, the last month of the autumn in Mounds, is another refreshing month, with an average temperature varying between 55.4°F (13°C) and 40.1°F (4.5°C). November comes with a drop in the average high-temperature, falling from October's pleasant 68.9°F (20.5°C) to a refreshing 55.4°F (13°C). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Mounds, Illinois, with an average temperature ranging between min 33.8°F (1°C) and max 45.5°F (7.5°C). The shift from November to December involves a decrease in the average high-temperature, dropping from a mild 55.4°F (13°C) to a chilly 45.5°F (7.5°C). Weather in December »Updated: Feb 12, 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
Mounds's coldest weather arrives in January, when temperatures average a high of 41.2°F (5.1°C) and a low of 28.4°F (-2°C).
In Mounds, during the entire year, the rain falls for 156.3 days and collects up to 36.65" (931mm) of precipitation.
January through April, October through December are months with snowfall.
In Mounds, Illinois, during the entire year, snow falls for 11.5 days and aggregates up to 4.88" (124mm) of snow.
The months with the lowest UV index in Mounds, Illinois, are January, February and December, with an average maximum UV index of 2.
February, March, May and December, with an average relative humidity of 78%, are most humid months in Mounds.
February is the month with the most snowfall in Mounds. Snow falls for 3.8 days and accumulates 1.5" (38mm) of snow.
February has the least sunshine of the year in Mounds, with an average of 4.7h of sunshine.
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.
April is the month with the most rainfall. Rain falls for 15.2 days and accumulates 4.21" (107mm) of precipitation.
In Mounds, snow does not fall in May through September.
The months with the highest UV index in Mounds are May through August, with an average maximum UV index of 6.
June has the longest days of the year in Mounds, with an average of 14h and 42min of daylight.
The month with the most sunshine in Mounds, Illinois, is June, with an average of 10.7h of sunshine.
The average temperatures in Mounds, Illinois, reach their apex in July, averaging 88.2°F (31.2°C) at the high end and 69.8°F (21°C) at the low end.
September is the month with the least rainfall in Mounds, Illinois. Rain falls for 11.4 days and accumulates 1.42" (36mm) of precipitation.
The least humid month in Mounds is October, with an average relative humidity of 69%.
With an average of 9h and 42min of daylight, December has the shortest days of the year.
Average temperature
Mounds, IL
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.2°F).
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure
Mounds, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Mounds, IL
- Average wind speed in January:
9.1mph - Average wind speed in February:
9.1mph - Average wind speed in March:
9.1mph - Average wind speed in April:
9mph - Average wind speed in May:
7.6mph - Average wind speed in June:
6.4mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.3mph - Average wind speed in October:
7.6mph - Average wind speed in November:
8.3mph - Average wind speed in December:
8.5mph
The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Mounds, IL
The months with the highest relative humidity are February, March, May and December (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall
Mounds, IL
- Average rainfall in January:
2.36" - Average rainfall in February:
3.58" - Average rainfall in March:
3.94" - Average rainfall in April:
4.21" - Average rainfall in May:
3.94" - Average rainfall in June:
2.95"
- Average rainfall in July:
2.83" - Average rainfall in August:
2.72" - Average rainfall in September:
1.42" - Average rainfall in October:
2.68" - Average rainfall in November:
3.11" - Average rainfall in December:
2.91"
The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days
Mounds, IL
- Average rainfall days in January:
9.8 days - Average rainfall days in February:
11.4 days - Average rainfall days in March:
15.4 days - Average rainfall days in April:
15.2 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
14.7 days
- Average rainfall days in July:
15.7 days - Average rainfall days in August:
13.6 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.8 days).
Average snowfall
Mounds, IL
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Mounds, IL
- Average snowfall days in January:
3.4 days - Average snowfall days in February:
3.8 days - Average snowfall days in March:
1.3 days - Average snowfall days in April:
0.3 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:
0.1 days - Average snowfall days in November:
1.1 days - Average snowfall days in December:
1.5 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Mounds, IL
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 42min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
4h and 48min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 48min - Average sunshine in May:
9h and 18min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 24min - Average sunshine in September:
9h and 36min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Mounds, IL
- Average sunshine days in January:
17.4 days - Average sunshine days in February:
13.8 days - Average sunshine days in March:
12.8 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
13.1 days
- Average sunshine days in July:
13.5 days - Average sunshine days in August:
15.1 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
18.3 days - Average sunshine days in December:
18.4 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (12.3 days).
Average UV index
Mounds, IL
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover
Mounds, IL
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility
Mounds, IL
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).
