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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 a wintry winter month in East Saint Louis, Illinois, with an average temperature ranging between max 37.8°F (3.2°C) and min 24.4°F (-4.2°C). January, on average, is the coldest month, registering a high temperature of 37.8°F (3.2°C) and a low of 24.4°F (-4.2°C). Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in East Saint Louis, Illinois, with an average temperature ranging between min 27.7°F (-2.4°C) and max 42.3°F (5.7°C). With the transition into February, East Saint Louis notes an average high-temperature of a still wintry 42.3°F (5.7°C), closely resembling January. Weather in February »
Weather in March
March, the first month of the spring in East Saint Louis, is a cool month, with an average temperature varying between 54.3°F (12.4°C) and 37.9°F (3.3°C). With the onset of March, East Saint Louis's average high-temperature sees a rise, moving from February's cold 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 varying between 48°F (8.9°C) and 65.1°F (18.4°C). East Saint Louis, Illinois, sees an increase in average high-temperatures during April, moving from a fresh 54.3°F (12.4°C) in March to an enjoyable 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). East Saint Louis sees an increase in average high-temperatures during May, moving from a comfortable 65.1°F (18.4°C) in April to a moderately hot 74.7°F (23.7°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in East Saint Louis, Illinois, 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). A shift in the average high-temperature is noticeable in June, changing from a warm 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 hot summer month, with an average temperature varying between 86.4°F (30.2°C) and 68.5°F (20.3°C). East Saint Louis's warmest temperatures are experienced in July, with average high temperatures of 86.4°F (30.2°C) and lows of 68.5°F (20.3°C). July's mean heat index is evaluated at a very hot 100.4°F (38°C). Weather in July »
Weather in August
August, the last month of the summer in East Saint Louis, is another warm month, with an average temperature fluctuating between 66.7°F (19.3°C) and 85.1°F (29.5°C). East Saint Louis sees the arrival of August with an average high-temperature of a moderately hot 85.1°F (29.5°C), indicating a subtle variation from July. Weather in August »
Weather in September
September, the first month of the autumn in East Saint Louis, is still a warm month, with an average temperature varying between 79.3°F (26.3°C) and 60.1°F (15.6°C). During the shift to September, a minor reduction in average high-temperature is observed, shifting 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, the same as September, is another refreshing autumn month in East Saint Louis, Illinois, with temperature in the range of an average low of 49.1°F (9.5°C) and an average high of 66.4°F (19.1°C). The start of October involves a temperature drop, moving from a warm 79.3°F (26.3°C) in September to an enjoyable 66.4°F (19.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in East Saint Louis, Illinois, with an average temperature varying between 37.9°F (3.3°C) and 53.2°F (11.8°C). In the transition to November, East Saint Louis observes a drop in the average high-temperature, moving from a refreshing 66.4°F (19.1°C) in October 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 an average temperature fluctuating between 42.8°F (6°C) and 30.2°F (-1°C). In December, the average high-temperature goes from a cool 53.2°F (11.8°C) in November to a frosty 42.8°F (6°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in East Saint Louis?
January is the month when East Saint Louis, Illinois, experiences its coldest temperatures, averaging a high of 37.8°F (3.2°C) and a low of 24.4°F (-4.2°C).
How much does it rain in East Saint Louis?
Throughout the year, there are 154.5 rainfall days, and 35.51" (902mm) of precipitation is accumulated.
When does it snow in East Saint Louis?
Months with snowfall in East Saint Louis, Illinois, are January through March, November and December.
How much does it snow in East Saint Louis?
In East Saint Louis, 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 in East Saint Louis?
With an average of 4.6h of sunshine, January has the least sunshine of the year.
What is the month with the lowest UV index in East Saint Louis?
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the driest month in East Saint Louis?
The month with the least rainfall is February, when the rain falls for 8.6 days and typically collects 1.89" (48mm) of precipitation.
When does it snow the most in East Saint Louis?
The month with the most snowfall in East Saint Louis, Illinois, is February, when snow falls for 6.3 days and typically aggregates up to 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 in East Saint Louis?
In East Saint Louis, snow does not fall in April through October.
What is the most humid month in East Saint Louis?
The months with the highest humidity in East Saint Louis, Illinois, are May and July, with an average relative humidity of 78%.
What is the rainiest month in East Saint Louis?
The month with the most rainfall in East Saint Louis, Illinois, is May, when the rain falls for 17.5 days and typically aggregates up to 4.25" (108mm) of precipitation.
What is the month with the highest UV index in East Saint Louis?
May through August, with an average maximum UV index of 6, are months with the highest UV index.
When are the longest days in East Saint Louis?
With an average of 14h and 48min of daylight, June has the longest days of the year.
What is the month with the most sunshine in East Saint Louis?
The months with the most sunshine are June and July, with an average of 10.4h of sunshine.
What month is the hottest in East Saint Louis?
East Saint Louis's warmest month, July, registers temperatures that range from a high of 86.4°F (30.2°C) to a low of 68.5°F (20.3°C).
What is the least humid month in East Saint Louis?
The least humid month is October, with an average relative humidity of 71%.
What is the month with the shortest days in East Saint Louis?
The month with the shortest days is December, 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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