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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 Roseville, Illinois, is a freezing cold winter month, with an average temperature fluctuating between 17.6°F (-8°C) and 29.7°F (-1.3°C). January, marked by an average high-temperature of 29.7°F (-1.3°C) and a low-temperature of 17.6°F (-8°C), is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is an icy month in Roseville, Illinois, with an average temperature ranging between min 21.6°F (-5.8°C) and max 34.9°F (1.6°C). February's arrival brings an average high-temperature of an icy 34.9°F (1.6°C), demonstrating subtle variation from the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Roseville, is a frosty month, with temperature in the range of an average high of 48°F (8.9°C) and an average low of 33.3°F (0.7°C). Entering March, Roseville sees a temperature rise, with the average high-temperature advancing from February's wintry 34.9°F (1.6°C) to a frosty 48°F (8.9°C). Weather in March »
Weather in April
April in Roseville, Illinois, is a refreshing spring month, with an average temperature varying between 43.3°F (6.3°C) and 60.4°F (15.8°C). In Roseville, the average high-temperature in April rises, from a frosty 48°F (8.9°C) in March, to a mild 60.4°F (15.8°C). Weather in April »
Weather in May
May, the last month of the spring in Roseville, is a pleasant month, with temperature in the range of an average low of 54.1°F (12.3°C) and an average high of 70.9°F (21.6°C). With the arrival of May, the average high-temperature transitions from a moderate 60.4°F (15.8°C) in April to a pleasant 70.9°F (21.6°C). Weather in May »
Weather in June
June, the first month of the summer in Roseville, is a warm month, with an average temperature varying between 63.1°F (17.3°C) and 79.5°F (26.4°C). June's onset brings a subtle temperature rise, moving from a pleasant 70.9°F (21.6°C) in May to a moderately hot 79.5°F (26.4°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Roseville, Illinois, with an average temperature fluctuating between 64.9°F (18.3°C) and 82°F (27.8°C). In Roseville, July is the warmest month, with temperatures averaging a high of 82°F (27.8°C) and a low of 64.9°F (18.3°C). For most parts of July, the heat index is computed to be a tropical 89.6°F (32°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Roseville, Illinois, with an average temperature varying between 81.1°F (27.3°C) and 63.3°F (17.4°C). As July transitions into August, the average high-temperature rests at a still warm 81.1°F (27.3°C), maintaining a close resemblance to the previous month. Weather in August »
Weather in September
September, the first month of the autumn in Roseville, is still a warm month, with temperature in the range of an average high of 75.9°F (24.4°C) and an average low of 56.3°F (13.5°C). In September, Roseville experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 81.1°F (27.3°C) in August to a still warm 75.9°F (24.4°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Roseville, Illinois, with an average temperature fluctuating between 61.7°F (16.5°C) and 45.9°F (7.7°C). The transition into October involves a decrease in the average high-temperature, falling from a moderately hot 75.9°F (24.4°C) in September to a refreshing 61.7°F (16.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Roseville, is also a frosty month, with an average temperature fluctuating between 34°F (1.1°C) and 47.5°F (8.6°C). Roseville's November weather shows a moderate shift in high-temperatures, falling from October's refreshing 61.7°F (16.5°C) to a chilly 47.5°F (8.6°C). Weather in November »
Weather in December
December, the first month of the winter in Roseville, is also a wintry month, with temperature in the range of an average low of 24.6°F (-4.1°C) and an average high of 35.6°F (2°C). Roseville's progression into December includes a drop in the average high-temperature, from a frosty 47.5°F (8.6°C) in November to a wintry 35.6°F (2°C). Weather in December »
Updated: Aug 30, 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 part of the year is the coldest?
In Roseville, January is the month with the lowest recorded average temperatures, measuring a high of 29.7°F (-1.3°C) and a low of 17.6°F (-8°C).
What is the driest month?
January is the month with the least rainfall. Rain falls for 5.9 days and accumulates 1.46" (37mm) of precipitation.
How much does it rain?
In Roseville, Illinois, during the entire year, the rain falls for 149.4 days and collects up to 30.16" (766mm) of precipitation.
When does it snow?
January through April, October through December are months with snowfall.
When does it snow the most?
January is the month with the most snowfall in Roseville. Snow falls for 10.9 days and accumulates 4.61" (117mm) of snow.
How much does it snow?
In Roseville, during the entire year, snow falls for 36.7 days and aggregates up to 15.31" (389mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 4.1h of sunshine.
What is the month with the lowest UV index?
The month with the lowest UV index is January, with an average maximum UV index of 1.
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 in Roseville. Rain falls for 19 days and accumulates 4.25" (108mm) of precipitation.
When it does not snow?
In Roseville, snow does not fall in May through September.
When are the longest days?
The month with the longest days is June, with an average of 15h and 0min of daylight.
What month has the most sunshine?
June has the most sunshine of the year in Roseville, with an average of 10.1h of sunshine.
What is the month with the highest UV index?
June and July, with an average maximum UV index of 6, are months with the highest UV index in Roseville.
What part of the year is the hottest?
Roseville's warmest temperatures are experienced in July, with average high temperatures of 82°F (27.8°C) and lows of 64.9°F (18.3°C).
What is the most humid month?
The most humid month is July, with an average relative humidity of 84%.
What is the least humid month?
October is the least humid month, with an average relative humidity of 71%.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Roseville, IL
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.7°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 (17.6°F).
Average pressure
Roseville, IL
- Average pressure in January:
30.14"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:
29.94"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Roseville, IL
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.6mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9mph - Average wind speed in June:
7.9mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.8mph - Average wind speed in September:
7.8mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity
Roseville, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Roseville, IL
- Average rainfall in January:
1.46" - Average rainfall in February:
1.73" - Average rainfall in March:
2.2" - Average rainfall in April:
3.35" - Average rainfall in May:
4.25" - Average rainfall in June:
3.58"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days
Roseville, IL
- Average rainfall days in January:
5.9 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
13 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
19 days - Average rainfall days in June:
18.7 days
- Average rainfall days in July:
17 days - Average rainfall days in August:
14 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
11.9 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is February (5.8 days).
Average snowfall
Roseville, IL
The month with the highest snowfall is January (4.61").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Roseville, IL
- Average snowfall days in January:
10.9 days - Average snowfall days in February:
9.4 days - Average snowfall days in March:
4.3 days - Average snowfall days in April:
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:
0.4 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
8.2 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Roseville, 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 3min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 4min - 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 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:
4h and 1min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 3min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Roseville, IL
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
14.4 days - Average sunshine days in March:
14.5 days - Average sunshine days in April:
12 days - Average sunshine days in May:
9.9 days - Average sunshine days in June:
9.2 days
- Average sunshine days in July:
9.9 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
17.6 days - Average sunshine days in November:
18 days - Average sunshine days in December:
16.6 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (9.2 days).
Average UV index
Roseville, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Roseville, IL
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility
Roseville, IL
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Roseville, Illinois, USA
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