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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, in Brussels, Illinois, is an icy winter month, with an average temperature ranging between max 36.1°F (2.3°C) and min 23.4°F (-4.8°C). January stands out as Brussels's coldest month, with temperatures ranging between an average high of 36.1°F (2.3°C) and a low of 23.4°F (-4.8°C). Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Brussels, Illinois, with an average temperature varying between 41°F (5°C) and 27°F (-2.8°C). February welcomes an average high-temperature of a still wintry 41°F (5°C), not much different from the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Brussels, is a fresh month, with an average temperature fluctuating between 53.6°F (12°C) and 37.6°F (3.1°C). The commencement of March sees a shift in the average high-temperature, moving from a wintry 41°F (5°C) in February to a fresh 53.6°F (12°C). Weather in March »
Weather in April
April is a comfortable spring month in Brussels, Illinois, with temperature in the range of an average low of 47.1°F (8.4°C) and an average high of 64.9°F (18.3°C). The onset of April brings a temperature shift, with the average high-temperature moving from a fresh 53.6°F (12°C) in March to a refreshing 64.9°F (18.3°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in Brussels, Illinois, with temperature in the range of an average high of 74.1°F (23.4°C) and an average low of 56.8°F (13.8°C). The shift into May is accompanied by a temperature increase, with the average high-temperature rising from a comfortable 64.9°F (18.3°C) in April to a moderately hot 74.1°F (23.4°C). Weather in May »
Weather in June
June, the first month of the summer in Brussels, is still a warm month, with an average temperature ranging between max 83.3°F (28.5°C) and min 65.8°F (18.8°C). June's onset is marked by a temperature increase, moving from a moderately hot 74.1°F (23.4°C) in May to a still warm 83.3°F (28.5°C). Weather in June »
Weather in July
July is a tropical summer month in Brussels, Illinois, with an average temperature fluctuating between 68.2°F (20.1°C) and 86.4°F (30.2°C). The month of July sees the highest average temperatures, reaching 86.4°F (30.2°C) at the peak and 68.2°F (20.1°C) at the low. The average heat index in July is calculated to be a fiery hot 100.4°F (38°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Brussels, Illinois, with an average temperature varying between 84.9°F (29.4°C) and 66.4°F (19.1°C). The onset of August notes an average high-temperature of a moderately hot 84.9°F (29.4°C), subtly shifted from July's 86.4°F (30.2°C). Weather in August »
Weather in September
September, the first month of the autumn in Brussels, is still a warm month, with an average temperature fluctuating between 79.2°F (26.2°C) and 59.7°F (15.4°C). With the onset of September, Brussels's climate undergoes a slight change as the average high-temperature moves from a warm 84.9°F (29.4°C) in August to a still moderately hot 79.2°F (26.2°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Brussels, Illinois, with an average temperature ranging between max 65.8°F (18.8°C) and min 48.6°F (9.2°C). As September transitions to October, the average high-temperature falls from a moderately hot 79.2°F (26.2°C) to an enjoyable 65.8°F (18.8°C). Weather in October »
Weather in November
November, the last month of the autumn in Brussels, is also a fresh month, with an average temperature fluctuating between 52.7°F (11.5°C) and 37.6°F (3.1°C). Observing a mild shift, the average high-temperature during November reduces from October's comfortable 65.8°F (18.8°C) to a fresh 52.7°F (11.5°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Brussels, Illinois, with an average temperature ranging between min 30°F (-1.1°C) and max 41.5°F (5.3°C). Observing a mild shift, the average high-temperature during December reduces from November's cool 52.7°F (11.5°C) to an icy 41.5°F (5.3°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest month in Brussels?
January, having an average high-temperature of 36.1°F (2.3°C) and an average low-temperature of 23.4°F (-4.8°C), is the coldest month in Brussels, Illinois.
How many days does it rain in Brussels?
Throughout the year, there are 138.8 rainfall days, and 27.6" (701mm) of precipitation is accumulated.
When does it snow in Brussels?
January through March, November and December are months with snowfall in Brussels, Illinois.
When does it snow the most in Brussels?
The months with the most snowfall are January and February, with an average 1.54" (39mm) of accumulated snow.
How much does it snow in Brussels?
Throughout the year, in Brussels, there are 17.9 snowfall days, and 5.12" (130mm) of snow is accumulated.
What are the months with the least sunshine in Brussels?
January and February, with an average of 4.6h of sunshine, are months with the least sunshine in Brussels.
When is the lowest UV index in Brussels?
The months with the lowest UV index in Brussels, Illinois, are January, February, November and December, with an average maximum UV index of 2.
What is the driest month in Brussels?
February is the month with the least rainfall in Brussels, Illinois. Rain falls for 6.6 days and accumulates 1.3" (33mm) of precipitation.
When is Daylight Saving Time (DST) in Brussels?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Brussels, 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 Brussels?
In Brussels, Illinois, snow does not fall in April through October.
What is the most humid month in Brussels?
The most humid month in Brussels, Illinois, is May, with an average relative humidity of 79%.
What is the rainiest month in Brussels?
The month with the most rainfall is May, when the rain falls for 15.9 days and typically aggregates up to 3.35" (85mm) of precipitation.
What are the months with the highest UV index in Brussels?
The months with the highest UV index in Brussels, Illinois, are May through August, with an average maximum UV index of 6.
When are the longest days in Brussels?
The month with the longest days in Brussels, Illinois, is June, with an average of 14h and 54min of daylight.
What is the month with the most sunshine in Brussels?
June and July, with an average of 10.4h of sunshine, are months with the most sunshine in Brussels.
What are the warmest months in Brussels?
July, with average temperatures reaching a high of 86.4°F (30.2°C) and a low of 68.2°F (20.1°C), is the warmest month.
What is the least humid month in Brussels?
October is the least humid month in Brussels, Illinois, with an average relative humidity of 71%.
What is the month with the shortest days in Brussels?
With an average of 9h and 30min of daylight, December has the shortest days of the year in Brussels.
Average temperature
Brussels, IL
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (36.1°F).
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure
Brussels, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.95"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:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Brussels, IL
- Average wind speed in January:
9.4mph - Average wind speed in February:
9.3mph - Average wind speed in March:
9.1mph - Average wind speed in April:
9.1mph - Average wind speed in May:
7.4mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.2mph - Average wind speed in October:
8mph - Average wind speed in November:
8.8mph - Average wind speed in December:
8.8mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Brussels, IL
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Brussels, IL
- Average rainfall in January:
1.46" - Average rainfall in February:
1.3" - Average rainfall in March:
2.05" - Average rainfall in April:
3.11" - Average rainfall in May:
3.35" - Average rainfall in June:
3.19"
- Average rainfall in July:
2.68" - Average rainfall in August:
2.99" - Average rainfall in September:
2.01" - Average rainfall in October:
2.44" - Average rainfall in November:
1.54" - Average rainfall in December:
1.5"
The wettest month (with the highest rainfall) is May (3.35").
The driest month (with the least rainfall) is February (1.3").
Average rainfall days
Brussels, IL
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
6.6 days - Average rainfall days in March:
13.4 days - Average rainfall days in April:
13.7 days - Average rainfall days in May:
15.9 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
13.6 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
10.4 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
6.8 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (6.3 days).
Average snowfall
Brussels, IL
The months with the highest snowfall are January and February (1.54").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Brussels, IL
- Average snowfall days in January:
5.7 days - Average snowfall days in February:
4.8 days - Average snowfall days in March:
1.8 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:
1.3 days - Average snowfall days in December:
3.9 days
The month with the highest number of snowfall days is January (5.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Brussels, IL
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- 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:
10h and 1min - Average daylight in December:
9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 3min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 1min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days
Brussels, IL
- Average sunshine days in January:
19.3 days - Average sunshine days in February:
16.1 days - Average sunshine days in March:
15.2 days - Average sunshine days in April:
15 days - Average sunshine days in May:
12.7 days - Average sunshine days in June:
11.2 days
- Average sunshine days in July:
12.7 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
16.4 days - Average sunshine days in October:
19.4 days - Average sunshine days in November:
19.2 days - Average sunshine days in December:
19.8 days
The month with the most sunshine days is December (19.8 days).
The month with the least sunshine days is June (11.2 days).
Average UV index
Brussels, 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, November and December (UV index 2).
Average cloud cover
Brussels, IL
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
Brussels, 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).
Brussels, Illinois, USA
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