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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, is a freezing cold winter month in Sugar Island, Illinois, with temperature in the range of an average high of 30.2°F (-1°C) and an average low of 18.5°F (-7.5°C). The coldest time of the year is January, with temperatures averaging a high of 30.2°F (-1°C) and a low of 18.5°F (-7.5°C). Weather in January »
Weather in February
February, the last month of the winter in Sugar Island, is a wintry month, with an average temperature ranging between max 34.7°F (1.5°C) and min 21.6°F (-5.8°C). Sugar Island, Illinois, transitions into February recording an average high-temperature of a wintry 34.7°F (1.5°C), closely aligning with the preceding month's temperature. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Sugar Island, Illinois, with an average temperature varying between 33.4°F (0.8°C) and 47.5°F (8.6°C). In Sugar Island, the onset of March comes with an increased average high-temperature, moving from February's wintry 34.7°F (1.5°C) to a frosty 47.5°F (8.6°C). Weather in March »
Weather in April
April is a mild spring month in Sugar Island, Illinois, with an average temperature varying between 43.5°F (6.4°C) and 59.5°F (15.3°C). Sugar Island in April shows a temperature shift, moving from an average high of a frosty 47.5°F (8.6°C) in March to a refreshing 59.5°F (15.3°C). Weather in April »
Weather in May
May, the last month of the spring in Sugar Island, is a pleasant month, with an average temperature fluctuating between 71.2°F (21.8°C) and 54.5°F (12.5°C). As April transitions into May, a change in temperatures is observed, with average highs moving from a moderate 59.5°F (15.3°C) to an agreeable 71.2°F (21.8°C). Weather in May »
Weather in June
June, the first month of the summer in Sugar Island, is a moderately hot month, with an average temperature fluctuating between 79.3°F (26.3°C) and 62.6°F (17°C). With the start of June, the average high-temperature marginally shifts from May's pleasant 71.2°F (21.8°C) to a warm 79.3°F (26.3°C). Weather in June »
Weather in July
July, like June, in Sugar Island, Illinois, is a moderately hot summer month, with an average temperature ranging between max 81.1°F (27.3°C) and min 64.4°F (18°C). With average high and low temperatures of 81.1°F (27.3°C) and 64.4°F (18°C) respectively, July is Sugar Island's warmest month. In July, the heat index is calculated to be 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 Sugar Island, Illinois, with an average temperature fluctuating between 62.4°F (16.9°C) and 79.5°F (26.4°C). August's advent presents an average high-temperature of a still moderately hot 79.5°F (26.4°C), indicating a slight variation from the conditions of the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Sugar Island, Illinois, with an average temperature varying between 75.2°F (24°C) and 57.2°F (14°C). The unfolding of September shows an average high-temperature of a still warm 75.2°F (24°C), indicating a slight variance from August's 79.5°F (26.4°C). Weather in September »
Weather in October
October, like September, in Sugar Island, Illinois, is another refreshing autumn month, with an average temperature varying between 62.1°F (16.7°C) and 46.8°F (8.2°C). October comes with a decrease in the average high-temperature, falling from a moderately hot 75.2°F (24°C) in September to a refreshing 62.1°F (16.7°C). Weather in October »
Weather in November
November, the last month of the autumn in Sugar Island, is another chilly month, with temperature in the range of an average high of 47.7°F (8.7°C) and an average low of 34.9°F (1.6°C). November witnesses a clear temperature decrease, falling from a refreshing 62.1°F (16.7°C) in October to a frosty 47.7°F (8.7°C). Weather in November »
Weather in December
December, the first month of the winter in Sugar Island, is also an icy month, with an average temperature fluctuating between 26.1°F (-3.3°C) and 36.5°F (2.5°C). With December's arrival, Sugar Island sees a decrease in average high-temperatures, moving from a chilly 47.7°F (8.7°C) in November to a wintry 36.5°F (2.5°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Sugar Island?
Sugar Island's January weather, with an average high temperature of 30.2°F (-1°C) and an average low temperature of 18.5°F (-7.5°C), tends to be the coldest of the year.
What is the driest month in Sugar Island?
January, February and December are months with the least rain in Sugar Island, Illinois, when the rain falls for 5.6 days and typically aggregates up to 1.06" (27mm) of rain.
How many days does it rain in Sugar Island?
Throughout the year, in Sugar Island, there are 138.7 rainfall days, and 21.77" (553mm) of precipitation is accumulated.
When does it snow in Sugar Island?
Months with snowfall are January through April, October through December.
How many days does it snow in Sugar Island?
In Sugar Island, Illinois, during the entire year, snow falls for 35.3 days and aggregates up to 9.37" (238mm) of snow.
What is the month with the least sunshine in Sugar Island?
January has the least sunshine of the year in Sugar Island, Illinois, with an average of 3.7h of sunshine.
What is the snowiest month in Sugar Island?
February is the month with the most snowfall in Sugar Island, Illinois. Snow falls for 8 days and accumulates 2.48" (63mm) of snow.
When is Daylight Saving Time (DST) in Sugar Island?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Sugar Island, Illinois, 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 Sugar Island?
May is the month with the most rainfall in Sugar Island, Illinois. Rain falls for 17.3 days and accumulates 3.19" (81mm) of precipitation.
When it does not snow in Sugar Island?
In Sugar Island, Illinois, snow does not fall in May through September.
When are the longest days in Sugar Island?
The month with the longest days is June, with an average of 15h and 6min of daylight.
What month has the most sunshine in Sugar Island?
June has the most sunshine of the year, with an average of 9.7h of sunshine.
When is the highest UV index in Sugar Island?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What is the warmest month in Sugar Island?
The average temperatures in Sugar Island, Illinois, reach their apex in July, averaging 81.1°F (27.3°C) at the high end and 64.4°F (18°C) at the low end.
What is the most humid month in Sugar Island?
With an average relative humidity of 85%, July is the most humid month.
What is the least humid month in Sugar Island?
The least humid month in Sugar Island is October, with an average relative humidity of 71%.
What is the month with the shortest days in Sugar Island?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
What is the month with the lowest UV index in Sugar Island?
With an average maximum UV index of 1, December is the month with the lowest UV index in Sugar Island, Illinois.
Average temperature
Sugar Island, IL
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.2°F).
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure
Sugar Island, IL
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.08"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:
30.01"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Sugar Island, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.8mph - Average wind speed in April:
10.2mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.3mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity
Sugar Island, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Sugar Island, IL
- Average rainfall in January:
1.06" - Average rainfall in February:
1.06" - Average rainfall in March:
1.61" - Average rainfall in April:
2.4" - Average rainfall in May:
3.19" - Average rainfall in June:
2.48"
- Average rainfall in July:
2.36" - Average rainfall in August:
2.13" - Average rainfall in September:
1.38" - Average rainfall in October:
1.81" - Average rainfall in November:
1.22" - Average rainfall in December:
1.06"
The wettest month (with the highest rainfall) is May (3.19").
The driest months (with the least rainfall) are January, February and December (1.06").
Average rainfall days
Sugar Island, IL
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
5.1 days - Average rainfall days in March:
11.4 days - Average rainfall days in April:
13.7 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
17.2 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
11.9 days - Average rainfall days in October:
10.3 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
6.8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (5.1 days).
Average snowfall
Sugar Island, IL
The month with the highest snowfall is February (2.48").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Sugar Island, IL
- Average snowfall days in January:
10.8 days - Average snowfall days in February:
8 days - Average snowfall days in March:
4.6 days - Average snowfall days in April:
1.3 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:
0.4 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
7.7 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Sugar Island, 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 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 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 3min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Sugar Island, IL
- Average sunshine days in January:
16.6 days - Average sunshine days in February:
15.1 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
11.6 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
10 days - Average sunshine days in August:
12.1 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
17.3 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
17.7 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10 days).
Average UV index
Sugar Island, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Sugar Island, IL
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility
Sugar Island, 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).
Sugar Island, Illinois, USA
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