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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 Stonington, Illinois, is another cold winter month, with an average temperature varying between 34°F (1.1°C) and 21.6°F (-5.8°C). In Stonington, the lowest temperatures are generally noted in January, averaging a high of 34°F (1.1°C) and a low of 21.6°F (-5.8°C). Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Stonington, Illinois, with temperature in the range of an average high of 39.2°F (4°C) and an average low of 25.7°F (-3.5°C). The arrival of February coincides with an average high-temperature of a still cold 39.2°F (4°C), indicating a minimal shift from January's 34°F (1.1°C). Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Stonington, Illinois, with an average temperature varying between 51.4°F (10.8°C) and 36.1°F (2.3°C). In March, the average high-temperature increases from a wintry 39.2°F (4°C) in February to a fresh 51.4°F (10.8°C). Weather in March »
Weather in April
April is a comfortable spring month in Stonington, Illinois, with an average temperature varying between 46.2°F (7.9°C) and 63.1°F (17.3°C). As Stonington transitions into April, a rise in the average high-temperature is observed, moving from a cool 51.4°F (10.8°C) in March to a refreshing 63.1°F (17.3°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Stonington, Illinois, with an average temperature ranging between min 56.8°F (13.8°C) and max 72.9°F (22.7°C). The beginning of May signals a rise in the average high-temperature, moving from a refreshing 63.1°F (17.3°C) in April to a pleasant 72.9°F (22.7°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Stonington, Illinois, with an average temperature varying between 81.1°F (27.3°C) and 64.8°F (18.2°C). In June, the average high-temperature marginally rises from a pleasant 72.9°F (22.7°C) in May to a moderately hot 81.1°F (27.3°C). Weather in June »
Weather in July
July, like June, in Stonington, Illinois, is a moderately hot summer month, with temperature in the range of an average low of 66.4°F (19.1°C) and an average high of 82.9°F (28.3°C). In Stonington, July is the warmest month, with temperatures averaging a high of 82.9°F (28.3°C) and a low of 66.4°F (19.1°C). The heat index in July is calculated to be a hot 91.4°F (33°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Stonington, Illinois, with an average temperature ranging between max 82°F (27.8°C) and min 64.8°F (18.2°C). Upon the onset of August, Stonington witnesses an average high-temperature of a still warm 82°F (27.8°C), showing a close resemblance to the prior month. Weather in August »
Weather in September
September, the first month of the autumn in Stonington, is also a moderately hot month, with temperature in the range of an average low of 58.8°F (14.9°C) and an average high of 77.4°F (25.2°C). Stonington's entry into September measures an average high-temperature of a still warm 77.4°F (25.2°C), closely parallel to the preceding month. Weather in September »
Weather in October
October, like September, in Stonington, Illinois, is another enjoyable autumn month, with an average temperature fluctuating between 64.2°F (17.9°C) and 48°F (8.9°C). The onset of October introduces a moderate change in Stonington's weather, with average high-temperatures falling from September's warm 77.4°F (25.2°C) to a refreshing 64.2°F (17.9°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Stonington, Illinois, with an average temperature varying between 36.3°F (2.4°C) and 50.4°F (10.2°C). The decrease of average high-temperatures is mild in November, with a decline from a refreshing 64.2°F (17.9°C) in October to a fresh 50.4°F (10.2°C). Weather in November »
Weather in December
December, the first month of the winter in Stonington, is still a cold month, with temperature in the range of an average low of 28.2°F (-2.1°C) and an average high of 39.4°F (4.1°C). The arrival of December corresponds with a reduction in the average high-temperature, down from November's fresh 50.4°F (10.2°C) to an icy 39.4°F (4.1°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 month is the coldest in Stonington?
In Stonington, January is the coldest month, with temperatures averaging a high of 34°F (1.1°C) and a low of 21.6°F (-5.8°C).
How many days does it rain in Stonington?
Throughout the year, there are 147.7 rainfall days, and 29.65" (753mm) of precipitation is accumulated.
When does it snow in Stonington?
January through April, November and December are months with snowfall in Stonington.
What is the snowiest month in Stonington?
January is the month with the most snowfall. Snow falls for 8.8 days and accumulates 2.8" (71mm) of snow.
How much does it snow in Stonington?
In Stonington, during the entire year, snow falls for 26.3 days and aggregates up to 8.94" (227mm) of snow.
What is the month with the least sunshine in Stonington?
January has the least sunshine of the year in Stonington, with an average of 4.2h of sunshine.
What is the month with the lowest UV index in Stonington?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
What is the driest month in Stonington?
February and December are months with the least rain when the rain falls for 7.1 days and typically aggregates up to 1.65" (42mm) of rain.
When is Daylight Saving Time (DST) in Stonington?
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 Stonington?
April is the month with the most rainfall in Stonington, Illinois. Rain falls for 15.3 days and accumulates 3.58" (91mm) of precipitation.
When it does not snow in Stonington?
In Stonington, Illinois, snow does not fall in May through October.
When are the longest days in Stonington?
The month with the longest days in Stonington is June, with an average of 14h and 54min of daylight.
What month has the most sunshine in Stonington?
June has the most sunshine of the year in Stonington, Illinois, with an average of 10.3h of sunshine.
What are the months with the highest UV index in Stonington?
The months with the highest UV index in Stonington, Illinois, are June through August, with an average maximum UV index of 6.
What are the warmest months in Stonington?
July temperatures in Stonington, Illinois, tend to peak at an average high of 82.9°F (28.3°C) and dip to a low of 66.4°F (19.1°C).
What is the most humid month in Stonington?
July is the most humid month in Stonington, Illinois, with an average relative humidity of 83%.
What is the least humid month in Stonington?
The least humid month in Stonington is October, with an average relative humidity of 70%.
What is the month with the shortest days in Stonington?
With an average of 9h and 24min of daylight, December has the shortest days of the year in Stonington, Illinois.
Average temperature
Stonington, IL
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34°F).
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure
Stonington, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"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:
30.03"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
Stonington, IL
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.1mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
Stonington, IL
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Stonington, IL
- Average rainfall in January:
1.89" - Average rainfall in February:
1.65" - Average rainfall in March:
2.32" - Average rainfall in April:
3.58" - Average rainfall in May:
3.43" - Average rainfall in June:
3.35"
- Average rainfall in July:
2.6" - Average rainfall in August:
2.52" - Average rainfall in September:
2.17" - Average rainfall in October:
2.52" - Average rainfall in November:
1.97" - Average rainfall in December:
1.65"
The wettest month (with the highest rainfall) is April (3.58").
The driest months (with the least rainfall) are February and December (1.65").
Average rainfall days
Stonington, IL
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
7.1 days - Average rainfall days in March:
12.9 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
16.5 days
- Average rainfall days in July:
15.7 days - Average rainfall days in August:
14.3 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
11 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
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 (7.1 days).
Average snowfall
Stonington, IL
The month with the highest snowfall is January (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Stonington, IL
- Average snowfall days in January:
8.8 days - Average snowfall days in February:
6.6 days - Average snowfall days in March:
3 days - Average snowfall days in April:
0.7 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:
1.6 days - Average snowfall days in December:
5.5 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Stonington, 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 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 0min - Average daylight in December:
9h and 2min
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 24min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 0min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 4min
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 12min).
Average sunshine days
Stonington, IL
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
14.8 days - Average sunshine days in March:
15 days - Average sunshine days in April:
13 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
11 days
- Average sunshine days in July:
12.2 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
18 days - Average sunshine days in November:
18.2 days - Average sunshine days in December:
17.5 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (11 days).
Average UV index
Stonington, 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, February, November and December (UV index 2).
Average cloud cover
Stonington, IL
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are June, August and September (Cloud cover 30).
Average visibility
Stonington, 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).
Stonington, Illinois, USA
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