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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, in Roselle, Illinois, is another subzero cold winter month, with temperature in the range of an average low of 16.5°F (-8.6°C) and an average high of 27.9°F (-2.3°C). Roselle's coldest month, January, registers temperatures that range from a high of 27.9°F (-2.3°C) to a low of 16.5°F (-8.6°C). Weather in January »
Weather in February
February, the last month of the winter in Roselle, is another freezing cold month, with an average temperature fluctuating between 19.4°F (-7°C) and 31.8°F (-0.1°C). Roselle notes an average high-temperature of a still freezing cold 31.8°F (-0.1°C) in February, displaying minor variation from January. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Roselle, Illinois, with an average temperature fluctuating between 44.1°F (6.7°C) and 30.9°F (-0.6°C). Observing a rise in March, the average high-temperature goes from February's subzero cold 31.8°F (-0.1°C) to a frosty 44.1°F (6.7°C). Weather in March »
Weather in April
April is a moderate spring month in Roselle, Illinois, with temperature in the range of an average high of 55.6°F (13.1°C) and an average low of 39.9°F (4.4°C). With the onset of April, Roselle experiences a temperature shift, with the average high-temperature moving from a chilly 44.1°F (6.7°C) in March to a mild 55.6°F (13.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a comfortable month in Roselle, Illinois, with an average temperature fluctuating between 67.5°F (19.7°C) and 51.4°F (10.8°C). May's arrival signals an increase in average high-temperatures, moving from April's mild 55.6°F (13.1°C) to a still refreshing 67.5°F (19.7°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Roselle, Illinois, with an average temperature varying between 60.4°F (15.8°C) and 77.2°F (25.1°C). The shift into June is accompanied by a temperature increase, with the average high-temperature rising from an enjoyable 67.5°F (19.7°C) in May to a warm 77.2°F (25.1°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Roselle, Illinois, with an average temperature ranging between min 65.7°F (18.7°C) and max 81.9°F (27.7°C). July, with average temperatures reaching a high of 81.9°F (27.7°C) and a low of 65.7°F (18.7°C), is the warmest month. During July, the heat index is evaluated at a hot 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Roselle, Illinois, with temperature in the range of an average high of 80.2°F (26.8°C) and an average low of 64.2°F (17.9°C). August's onset sees an average high-temperature of a still moderately hot 80.2°F (26.8°C), exhibiting a slight fluctuation from the previous month. Weather in August »
Weather in September
September, the first month of the autumn in Roselle, is also a moderately hot month, with temperature in the range of an average low of 57.6°F (14.2°C) and an average high of 73.4°F (23°C). The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from 80.2°F (26.8°C) in August to a still moderately hot 73.4°F (23°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Roselle, Illinois, with an average temperature ranging between min 45.5°F (7.5°C) and max 60.3°F (15.7°C). October brings a drop in Roselle's average high-temperature, falling from a warm 73.4°F (23°C) in September to a mild 60.3°F (15.7°C). Weather in October »
Weather in November
November, the last month of the autumn in Roselle, is also a frosty month, with temperature in the range of an average high of 45.5°F (7.5°C) and an average low of 33.1°F (0.6°C). In Roselle, stepping into November signifies a significant temperature decrement, moving down from October's mild 60.3°F (15.7°C) to a chilly 45.5°F (7.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Roselle, Illinois, with temperature in the range of an average low of 23.9°F (-4.5°C) and an average high of 34°F (1.1°C). The shift from November to December involves a decrease in the average high-temperature, dropping from a chilly 45.5°F (7.5°C) to a cold 34°F (1.1°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
What are the coldest months in Roselle?
Roselle's January weather reaches an average high of 27.9°F (-2.3°C) and an average low of 16.5°F (-8.6°C), making it the coldest month.
What is the most humid month in Roselle?
January and February, with an average relative humidity of 83%, are most humid months.
How much does it rain in Roselle?
Throughout the year, in Roselle, Illinois, there are 147.4 rainfall days, and 24.69" (627mm) of precipitation is accumulated.
When does it snow in Roselle?
January through May, October through December are months with snowfall.
How many days does it snow in Roselle?
In Roselle, during the entire year, snow falls for 48.9 days and aggregates up to 15.47" (393mm) of snow.
What is the month with the least sunshine in Roselle?
The month with the least sunshine is January, with an average of 3.6h of sunshine.
What is the month with the lowest UV index in Roselle?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
When does it snow the most in Roselle?
The month with the most snowfall in Roselle is February, when snow falls for 11 days and typically aggregates up to 4.02" (102mm) of snow.
When is Daylight Saving Time (DST) in Roselle?
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 in Roselle?
May is the month with the most rainfall in Roselle. Rain falls for 17.7 days and accumulates 3.11" (79mm) of precipitation.
When it does not snow in Roselle?
In Roselle, snow does not fall in June through September.
When are the longest days in Roselle?
June has the longest days of the year in Roselle, Illinois, with an average of 15h and 12min of daylight.
What is the month with the highest UV index in Roselle?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What is the warmest month in Roselle?
Roselle experiences its average highest temperatures in July, reaching a peak of 81.9°F (27.7°C) and a minimum of 65.7°F (18.7°C).
What month has the most sunshine in Roselle?
The month with the most sunshine is July, with an average of 10h of sunshine.
What is the least humid month in Roselle?
The least humid month in Roselle, Illinois, is October, with an average relative humidity of 73%.
What is the driest month in Roselle?
December is the month with the least rainfall in Roselle, Illinois. Rain falls for 7.9 days and accumulates 1.14" (29mm) of precipitation.
What is the month with the shortest days in Roselle?
With an average of 9h and 12min of daylight, December has the shortest days of the year.
Average temperature
Roselle, IL
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (27.9°F).
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure
Roselle, 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:
29.98"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
Roselle, IL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.2mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.1mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity
Roselle, IL
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Roselle, IL
- Average rainfall in January:
1.34" - Average rainfall in February:
1.42" - Average rainfall in March:
1.5" - Average rainfall in April:
2.91" - Average rainfall in May:
3.11" - Average rainfall in June:
2.76"
- Average rainfall in July:
2.72" - Average rainfall in August:
2.76" - Average rainfall in September:
1.69" - Average rainfall in October:
2.13" - Average rainfall in November:
1.22" - Average rainfall in December:
1.14"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.14").
Average rainfall days
Roselle, IL
- Average rainfall days in January:
6.1 days - Average rainfall days in February:
4.9 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
15.6 days - Average rainfall days in May:
17.7 days - Average rainfall days in June:
16.5 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
16.3 days - Average rainfall days in September:
12.8 days - Average rainfall days in October:
12.8 days - Average rainfall days in November:
8.2 days - Average rainfall days in December:
7.9 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (4.9 days).
Average snowfall
Roselle, IL
- Average snowfall in January:
3.74" - Average snowfall in February:
4.02" - Average snowfall in March:
1.26" - Average snowfall in April:
2.36" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Roselle, IL
- Average snowfall days in January:
13.1 days - Average snowfall days in February:
11 days - Average snowfall days in March:
6.8 days - Average snowfall days in April:
2.2 days - Average snowfall days in May:
0.1 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:
4.1 days - Average snowfall days in December:
11.1 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Roselle, 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 5min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Roselle, IL
- Average sunshine days in January:
13.9 days - Average sunshine days in February:
11.9 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
10.8 days - Average sunshine days in May:
10.8 days - Average sunshine days in June:
11.2 days
- Average sunshine days in July:
10.2 days - Average sunshine days in August:
10.9 days - Average sunshine days in September:
14.4 days - Average sunshine days in October:
14.8 days - Average sunshine days in November:
17.2 days - Average sunshine days in December:
14.8 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (10.2 days).
Average UV index
Roselle, IL
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Roselle, IL
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July, August and September (Cloud cover 33).
Average visibility
Roselle, IL
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Roselle, Illinois, USA
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