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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, the same as December, is another cold winter month in Brighton, Illinois, with an average temperature ranging between min 22.6°F (-5.2°C) and max 35.8°F (2.1°C). Brighton's temperature records reveal January as the coldest month, marked by average highs of 35.8°F (2.1°C) and lows of 22.6°F (-5.2°C). Weather in January »
Weather in February
February, the last month of the winter in Brighton, is also an icy month, with an average temperature fluctuating between 40.6°F (4.8°C) and 26.4°F (-3.1°C). In February, the average high-temperature registers at a still wintry 40.6°F (4.8°C), nearly identical to January's 35.8°F (2.1°C). Weather in February »
Weather in March
March, the first month of the spring in Brighton, is a fresh month, with an average temperature ranging between max 52.3°F (11.3°C) and min 37°F (2.8°C). With the onset of March, Brighton's average high-temperature experiences a rise, moving from February's cold 40.6°F (4.8°C) to a fresh 52.3°F (11.3°C). Weather in March »
Weather in April
April is a refreshing spring month in Brighton, Illinois, with an average temperature fluctuating between 64°F (17.8°C) and 46.8°F (8.2°C). The transition from March to April brings a temperature rise, with average high-temperatures increasing from a fresh 52.3°F (11.3°C) to a comfortable 64°F (17.8°C). Weather in April »
Weather in May
May, the last month of the spring in Brighton, is a moderately hot month, with an average temperature fluctuating between 56.8°F (13.8°C) and 73.9°F (23.3°C). In Brighton, the onset of May comes with an increased average high-temperature, moving from April's refreshing 64°F (17.8°C) to a warm 73.9°F (23.3°C). Weather in May »
Weather in June
June, the first month of the summer in Brighton, is also a moderately hot month, with temperature in the range of an average high of 82.6°F (28.1°C) and an average low of 65.7°F (18.7°C). June witnesses a minor rise in the average high-temperature, transitioning from a moderately hot 73.9°F (23.3°C) in May to a still warm 82.6°F (28.1°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Brighton, Illinois, with an average temperature fluctuating between 67.5°F (19.7°C) and 84.6°F (29.2°C). July is the warmest month, with the temperature often reaching an average high of 84.6°F (29.2°C) and an average low of 67.5°F (19.7°C). The heat index value during July is computed to be a torrid 96.8°F (36°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Brighton, Illinois, with an average temperature ranging between max 83.3°F (28.5°C) and min 65.5°F (18.6°C). In August, the average high-temperature registers at a still moderately hot 83.3°F (28.5°C), nearly identical to July's 84.6°F (29.2°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Brighton, Illinois, with an average temperature ranging between min 59.4°F (15.2°C) and max 78.3°F (25.7°C). Brighton sees the arrival of September with an average high-temperature of a still moderately hot 78.3°F (25.7°C), indicating a subtle variation from August. Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Brighton, Illinois, with an average temperature fluctuating between 65.3°F (18.5°C) and 48.2°F (9°C). October suggests a modest reduction in the average high-temperature, shifting from a moderately hot 78.3°F (25.7°C) in September to a comfortable 65.3°F (18.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Brighton, Illinois, with an average temperature ranging between max 51.6°F (10.9°C) and min 36.7°F (2.6°C). The onset of November comes with a shift in the average high-temperature, falling from an enjoyable 65.3°F (18.5°C) in October to a cool 51.6°F (10.9°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Brighton, Illinois, with temperature in the range of an average low of 29.3°F (-1.5°C) and an average high of 40.6°F (4.8°C). In Brighton, entering December brings a temperature decrement, reducing from November's fresh 51.6°F (10.9°C) to an icy 40.6°F (4.8°C). Weather in December »
Updated: Jun 5, 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 time of the year is the coldest?
In Brighton, the average lowest temperatures are observed in January, with a high of 35.8°F (2.1°C) and a low of 22.6°F (-5.2°C).
What is the driest month?
The month with the least rainfall is January, when the rain falls for 6.5 days and typically collects 1.46" (37mm) of precipitation.
How many days does it rain?
In Brighton, during the entire year, the rain falls for 141.9 days and collects up to 27.36" (695mm) of precipitation.
When does it snow?
Months with snowfall are January through March, November and December.
How many days does it snow?
Throughout the year, there are 19.8 snowfall days, and 7.91" (201mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 4.4h of sunshine, January has the least sunshine of the year.
When is 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 does it snow the most?
February is the month with the most snowfall. Snow falls for 5.9 days and accumulates 2.48" (63mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Brighton, 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 Brighton, Illinois, snow does not fall in April through October.
What is the month with the highest UV index?
May through August, with an average maximum UV index of 6, are months with the highest UV index.
What is the wettest month?
June is the month with the most rainfall. Rain falls for 15.6 days and accumulates 3.35" (85mm) of precipitation.
When are the longest days in Brighton?
With an average of 14h and 54min of daylight, June has the longest days of the year.
What month has the most sunshine?
June has the most sunshine of the year in Brighton, with an average of 10.3h of sunshine.
What is the warmest month?
July, characterized by an average high temperature of 84.6°F (29.2°C) and a low temperature of 67.5°F (19.7°C), is generally the warmest month.
What is the most humid month?
July is the most humid month in Brighton, with an average relative humidity of 81%.
What is the least humid month?
The least humid month is October, with an average relative humidity of 71%.
What is the month with the shortest days?
December has the shortest days of the year in Brighton, with an average of 9h and 30min of daylight.
Average temperature
Brighton, IL
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (35.8°F).
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure
Brighton, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.94"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 (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Brighton, IL
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.7mph - Average wind speed in March:
9.5mph - Average wind speed in April:
9.5mph - Average wind speed in May:
7.7mph - Average wind speed in June:
6.8mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.4mph - Average wind speed in October:
8.3mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.1mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity
Brighton, IL
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Brighton, IL
- Average rainfall in January:
1.46" - Average rainfall in February:
1.5" - Average rainfall in March:
2.13" - Average rainfall in April:
2.91" - Average rainfall in May:
3.31" - Average rainfall in June:
3.35"
- Average rainfall in July:
2.68" - Average rainfall in August:
2.87" - Average rainfall in September:
1.81" - Average rainfall in October:
2.05" - Average rainfall in November:
1.69" - Average rainfall in December:
1.61"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days
Brighton, IL
- Average rainfall days in January:
6.5 days - Average rainfall days in February:
7.2 days - Average rainfall days in March:
13.2 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
15.6 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
10.4 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
8.1 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (6.5 days).
Average snowfall
Brighton, IL
The month with the highest snowfall is February (2.48").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Brighton, IL
- Average snowfall days in January:
6.2 days - Average snowfall days in February:
5.9 days - Average snowfall days in March:
2.3 days - Average snowfall days in April:
0.1 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 (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Brighton, 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 2min - 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 2min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Brighton, IL
- Average sunshine days in January:
19.5 days - Average sunshine days in February:
16.4 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
14 days - Average sunshine days in May:
12.2 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
12.1 days - Average sunshine days in August:
14.5 days - Average sunshine days in September:
16.7 days - Average sunshine days in October:
19.3 days - Average sunshine days in November:
18.8 days - Average sunshine days in December:
19.3 days
The month with the most sunshine days is January (19.5 days).
The month with the least sunshine days is July (12.1 days).
Average UV index
Brighton, 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
Brighton, IL
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility
Brighton, 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).
Brighton, Illinois, USA
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