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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
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Downs, Illinois, with an average temperature varying between 19.6°F (-6.9°C) and 31.3°F (-0.4°C). January, characterized by an average high temperature of 31.3°F (-0.4°C) and a low temperature of 19.6°F (-6.9°C), is generally the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Downs, is a cold month, with an average temperature fluctuating between 23°F (-5°C) and 35.8°F (2.1°C). The initiation of February sees an average high-temperature of an icy 35.8°F (2.1°C), showing minor variations from the previous month. Weather in February »
Weather in March
March, the first month of the spring in Downs, is a chilly month, with an average temperature varying between 34.3°F (1.3°C) and 49.1°F (9.5°C). March marks a rise in the average high-temperature, moving from February's icy 35.8°F (2.1°C) to a chilly 49.1°F (9.5°C). Weather in March »
Weather in April
April is an enjoyable spring month in Downs, Illinois, with an average temperature fluctuating between 61.2°F (16.2°C) and 44.8°F (7.1°C). April sees a temperature increase, moving from a chilly 49.1°F (9.5°C) in March to a refreshing 61.2°F (16.2°C). Weather in April »
Weather in May
May, the last month of the spring in Downs, is a pleasant month, with an average temperature ranging between min 55.6°F (13.1°C) and max 72°F (22.2°C). With the onset of May, Downs's weather sees a temperature rise, transitioning from an enjoyable 61.2°F (16.2°C) in April to a pleasant 72°F (22.2°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Downs, Illinois, with an average temperature ranging between max 79.7°F (26.5°C) and min 63.5°F (17.5°C). The arrival of June witnesses a small shift in the average high-temperature, moving from an agreeable 72°F (22.2°C) in May to a warm 79.7°F (26.5°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Downs, Illinois, with an average temperature ranging between min 64.9°F (18.3°C) and max 80.8°F (27.1°C). In Downs, the month of July registers the highest temperatures, averaging 80.8°F (27.1°C) at the peak and 64.9°F (18.3°C) at the lowest. July's heat index is appraised at a tropical 86°F (30°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Downs, Illinois, with an average temperature ranging between max 79.9°F (26.6°C) and min 63.1°F (17.3°C). August's onset brings an average high-temperature of a still warm 79.9°F (26.6°C), showing a minute difference from July's 80.8°F (27.1°C). Weather in August »
Weather in September
September, the first month of the autumn in Downs, is also a moderately hot month, with an average temperature fluctuating between 57.9°F (14.4°C) and 75.9°F (24.4°C). During September, Downs observes a subtle ascent to a still moderately hot 75.9°F (24.4°C) from August's 79.9°F (26.6°C) in the average high-temperature. Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Downs, Illinois, with an average temperature varying between 62.2°F (16.8°C) and 46.8°F (8.2°C). A shift in Downs's weather is observed as September turns into October, with the average high temperature reducing from a warm 75.9°F (24.4°C) to a comfortable 62.2°F (16.8°C). Weather in October »
Weather in November
November, the last month of the autumn in Downs, is another chilly month, with an average temperature fluctuating between 34.9°F (1.6°C) and 48°F (8.9°C). Setting in of November comes with a decrease in the average high-temperature, moving from an enjoyable 62.2°F (16.8°C) in October to a frosty 48°F (8.9°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Downs, Illinois, with an average temperature ranging between min 26.6°F (-3°C) and max 36.9°F (2.7°C). In December, the meteorological conditions alter, with the average high-temperature shifting from a frosty 48°F (8.9°C) in November to an icy 36.9°F (2.7°C). Weather in December »
Updated: Aug 28, 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 are the coldest months?
In Downs, January is known for its average lowest temperatures, reaching a high of 31.3°F (-0.4°C) and a low of 19.6°F (-6.9°C).
How many days does it rain?
Throughout the year, there are 139 rainfall days, and 20.83" (529mm) of precipitation is accumulated.
When does it snow?
January through April, November and December are months with snowfall.
When does it snow the most?
The month with the most snowfall is January, when snow falls for 9.8 days and typically aggregates up to 2.8" (71mm) of snow.
How many days does it snow in Downs?
In Downs, Illinois, during the entire year, snow falls for 28.1 days and aggregates up to 9.17" (233mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 3.9h of sunshine.
What is the month with the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
When is Daylight Saving Time (DST)?
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?
May is the month with the most rainfall. Rain falls for 17.5 days and accumulates 2.87" (73mm) of precipitation.
When it does not snow?
In Downs, snow does not fall in May through October.
When are the longest days in Downs?
With an average of 15h and 0min of daylight, June has the longest days of the year.
What month has the most sunshine?
With an average of 10.1h of sunshine, June has the most sunshine of the year.
What is the month with the highest UV index?
The months with the highest UV index in Downs are June and July, with an average maximum UV index of 6.
What are the warmest months?
The temperatures reach their highest averages in July, with highs of 80.8°F (27.1°C) and lows of 64.9°F (18.3°C).
What is the most humid month?
July is the most humid month, with an average relative humidity of 85%.
What is the least humid month?
October is the least humid month, with an average relative humidity of 71%.
What is the driest month?
The month with the least rainfall in Downs is December, when the rain falls for 7.5 days and typically collects 1.1" (28mm) of precipitation.
What is the month with the shortest days?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Downs, IL
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (31.3°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 (19.6°F).
Average pressure
Downs, IL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"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:
29.98"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:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Downs, IL
- Average wind speed in January:
11mph - Average wind speed in February:
10.9mph - Average wind speed in March:
10.5mph - Average wind speed in April:
10.8mph - Average wind speed in May:
9.1mph - Average wind speed in June:
7.9mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9.8mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.4mph
The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Downs, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Downs, IL
- Average rainfall in January:
1.18" - Average rainfall in February:
1.14" - Average rainfall in March:
1.57" - Average rainfall in April:
2.32" - Average rainfall in May:
2.87" - Average rainfall in June:
2.4"
The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is December (1.1").
Average rainfall days
Downs, IL
- Average rainfall days in January:
5.8 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
13.9 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
15.5 days
- Average rainfall days in July:
16.5 days - Average rainfall days in August:
13.7 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
8.7 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (5.8 days).
Average snowfall
Downs, IL
The month with the highest snowfall is January (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Downs, IL
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
6.7 days - Average snowfall days in March:
3.3 days - Average snowfall days in April:
0.6 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:
0.1 days - Average snowfall days in November:
1.7 days - Average snowfall days in December:
5.9 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Downs, 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 2min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - 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 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 2min - Average sunshine in April:
7h and 5min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 0min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Downs, IL
- Average sunshine days in January:
16.6 days - Average sunshine days in February:
16.8 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
10.6 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
10.8 days - Average sunshine days in August:
13.9 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
18.7 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
18.8 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is June (10.3 days).
Average UV index
Downs, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Downs, IL
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility
Downs, 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).