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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 an icy winter month in East Saint Louis, Illinois, with an average temperature ranging between min 24.4°F (-4.2°C) and max 37.8°F (3.2°C). The coldest temperatures occur during January, when averages reach a peak of 37.8°F (3.2°C) and a low of 24.4°F (-4.2°C). Weather in January »
Weather in February
February, the last month of the winter in East Saint Louis, is also a wintry month, with temperature in the range of an average low of 27.7°F (-2.4°C) and an average high of 42.3°F (5.7°C). Transitioning into February, East Saint Louis records an average high-temperature of a still wintry 42.3°F (5.7°C), almost identical to January's 37.8°F (3.2°C). Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in East Saint Louis, Illinois, with an average temperature varying between 37.9°F (3.3°C) and 54.3°F (12.4°C). With the onset of March, East Saint Louis sees a temperature rise, with the average high-temperature moving from February's icy 42.3°F (5.7°C) to a cool 54.3°F (12.4°C). Weather in March »
Weather in April
April is a refreshing spring month in East Saint Louis, Illinois, with an average temperature fluctuating between 65.1°F (18.4°C) and 48°F (8.9°C). East Saint Louis sees an increase in average high-temperatures during April, moving from a cool 54.3°F (12.4°C) in March to a comfortable 65.1°F (18.4°C). Weather in April »
Weather in May
May, the last month of the spring in East Saint Louis, is a warm month, with an average temperature fluctuating between 57.7°F (14.3°C) and 74.7°F (23.7°C). The start of May signals an increase in the average high-temperature, moving from a comfortable 65.1°F (18.4°C) in April to a warm 74.7°F (23.7°C). Weather in May »
Weather in June
June, the first month of the summer in East Saint Louis, is still a warm month, with temperature in the range of an average high of 83.8°F (28.8°C) and an average low of 66.9°F (19.4°C). June sees a temperature increase, moving from 74.7°F (23.7°C) in May to a still moderately hot 83.8°F (28.8°C). Weather in June »
Weather in July
July in East Saint Louis, Illinois, is a tropical summer month, with an average temperature varying between 68.5°F (20.3°C) and 86.4°F (30.2°C). July is the month when East Saint Louis experiences its warmest temperatures, averaging a high of 86.4°F (30.2°C) and a low of 68.5°F (20.3°C). For most parts of July, the heat index is calculated to be a sweltering 100.4°F (38°C). Weather in July »
Weather in August
August, the last month of the summer in East Saint Louis, is also a moderately hot month, with an average temperature varying between 85.1°F (29.5°C) and 66.7°F (19.3°C). The beginning of August reveals an average high-temperature of a warm 85.1°F (29.5°C), showing minimal deviation from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in East Saint Louis, Illinois, with an average temperature varying between 79.3°F (26.3°C) and 60.1°F (15.6°C). The onset of September brings a small shift in high-temperatures, falling from a warm 85.1°F (29.5°C) in August to a still moderately hot 79.3°F (26.3°C). Weather in September »
Weather in October
October, like September, in East Saint Louis, Illinois, is another refreshing autumn month, with an average temperature varying between 49.1°F (9.5°C) and 66.4°F (19.1°C). The start of October signals a decrease in the average high-temperature, transitioning from a moderately hot 79.3°F (26.3°C) in September to a comfortable 66.4°F (19.1°C). Weather in October »
Weather in November
November, the last month of the autumn in East Saint Louis, is another cool month, with temperature in the range of an average high of 53.2°F (11.8°C) and an average low of 37.9°F (3.3°C). The commencement of November indicates a shift in the average high-temperature, receding from October's enjoyable 66.4°F (19.1°C) to a cool 53.2°F (11.8°C). Weather in November »
Weather in December
December, the first month of the winter in East Saint Louis, is still a chilly month, with temperature in the range of an average high of 42.8°F (6°C) and an average low of 30.2°F (-1°C). The onset of December entails a temperature shift, as the average high-temperature decreases from a cool 53.2°F (11.8°C) in November to a frosty 42.8°F (6°C). Weather in December »
Updated: Aug 29, 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 is the coldest time of year in East Saint Louis?
With average high temperatures of 37.8°F (3.2°C) and lows of 24.4°F (-4.2°C), January is the coldest month.
How many days does it rain?
Throughout the year, there are 154.5 rainfall days, and 35.51" (902mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through March, November and December.
How much does it snow?
In East Saint Louis, Illinois, during the entire year, snow falls for 21.9 days and aggregates up to 7.91" (201mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 4.6h of sunshine.
What are the months with the lowest UV index?
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the driest month?
February is the month with the least rainfall. Rain falls for 8.6 days and accumulates 1.89" (48mm) of precipitation.
What is the snowiest month?
February is the month with the most snowfall. Snow falls for 6.3 days and accumulates 2.64" (67mm) of snow.
When is Daylight Saving Time (DST) in East Saint Louis?
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.
When it does not snow?
April through October are months without snowfall.
What are the most humid months?
May and July, with an average relative humidity of 78%, are most humid months.
What is the rainiest month?
May is the month with the most rainfall. Rain falls for 17.5 days and accumulates 4.25" (108mm) of precipitation.
When is the highest UV index in East Saint Louis?
The months with the highest UV index are May through August, with an average maximum UV index of 6.
When are the longest days?
June has the longest days of the year, with an average of 14h and 48min of daylight.
What are the months with the most sunshine?
The months with the most sunshine in East Saint Louis are June and July, with an average of 10.4h of sunshine.
What is the hottest time of year?
Temperature readings reach their annual highs in July, averaging 86.4°F (30.2°C) and a minimum average of 68.5°F (20.3°C).
What is the least humid month in East Saint Louis?
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 30min of daylight.
Average temperature
East Saint Louis, IL
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.8°F).
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure
East Saint Louis, IL
- Average pressure in January:
30.16"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:
29.96"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:
30.02"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 (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
East Saint Louis, IL
- Average wind speed in January:
9.3mph - Average wind speed in February:
9.2mph - Average wind speed in March:
9mph - Average wind speed in April:
8.9mph - Average wind speed in May:
7.3mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.6mph - Average wind speed in September:
6mph - Average wind speed in October:
7.8mph - Average wind speed in November:
8.5mph - Average wind speed in December:
8.6mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity
East Saint Louis, IL
The months with the highest relative humidity are May and July (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall
East Saint Louis, IL
- Average rainfall in January:
2.28" - Average rainfall in February:
1.89" - Average rainfall in March:
2.64" - Average rainfall in April:
3.86" - Average rainfall in May:
4.25" - Average rainfall in June:
4.13"
- Average rainfall in July:
3.46" - Average rainfall in August:
3.43" - Average rainfall in September:
2.32" - Average rainfall in October:
2.83" - Average rainfall in November:
2.13" - Average rainfall in December:
2.28"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is February (1.89").
Average rainfall days
East Saint Louis, IL
- Average rainfall days in January:
8 days - Average rainfall days in February:
8.6 days - Average rainfall days in March:
14.2 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
16.1 days
- Average rainfall days in July:
17.5 days - Average rainfall days in August:
13.8 days - Average rainfall days in September:
12.9 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
10.9 days - Average rainfall days in December:
8.2 days
The months with the highest number of rainy days are May and July (17.5 days).
The month with the least rainy days is January (8 days).
Average snowfall
East Saint Louis, IL
The month with the highest snowfall is February (2.64").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
East Saint Louis, IL
- Average snowfall days in January:
7.3 days - Average snowfall days in February:
6.3 days - Average snowfall days in March:
2.5 days - Average snowfall days in April:
0.3 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:
0.1 days - Average snowfall days in November:
1.2 days - Average snowfall days in December:
4.2 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
East Saint Louis, 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 1min - 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 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 3min - Average sunshine in May:
9h and 3min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days
East Saint Louis, IL
- Average sunshine days in January:
16.9 days - Average sunshine days in February:
13.9 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
12.4 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
11.4 days
- Average sunshine days in July:
11.7 days - Average sunshine days in August:
14.8 days - Average sunshine days in September:
15 days - Average sunshine days in October:
17.9 days - Average sunshine days in November:
17.2 days - Average sunshine days in December:
18.8 days
The month with the most sunshine days is December (18.8 days).
The month with the least sunshine days is May (11.2 days).
Average UV index
East Saint Louis, 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 and December (UV index 2).
Average cloud cover
East Saint Louis, IL
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility
East Saint Louis, 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).
East Saint Louis, Illinois, USA
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