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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 Saint Elmo, Illinois, with an average temperature varying between 36°F (2.2°C) and 23.4°F (-4.8°C). January, having an average high-temperature of 36°F (2.2°C) and an average low-temperature of 23.4°F (-4.8°C), is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Saint Elmo, Illinois, with an average temperature ranging between min 27°F (-2.8°C) and max 40.5°F (4.7°C). The dawn of February sees an average high-temperature of a still cold 40.5°F (4.7°C), subtly contrasting with January's 36°F (2.2°C). Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Saint Elmo, Illinois, with temperature in the range of an average high of 52.2°F (11.2°C) and an average low of 36.9°F (2.7°C). Saint Elmo's weather in March presents a rise in the average high-temperature, moving from a cold 40.5°F (4.7°C) in February to a fresh 52.2°F (11.2°C). Weather in March »
Weather in April
April is an enjoyable spring month in Saint Elmo, Illinois, with temperature in the range of an average high of 63.5°F (17.5°C) and an average low of 46.6°F (8.1°C). Saint Elmo in April experiences an increase in the average high-temperature, moving from March's fresh 52.2°F (11.2°C) to a comfortable 63.5°F (17.5°C). Weather in April »
Weather in May
The last month of the spring, May, is a warm month in Saint Elmo, Illinois, with an average temperature fluctuating between 57°F (13.9°C) and 73.4°F (23°C). The shift from April to May sees an increase in the average high-temperature, transitioning from an enjoyable 63.5°F (17.5°C) to a warm 73.4°F (23°C). Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in Saint Elmo, Illinois, with temperature in the range of an average high of 82.2°F (27.9°C) and an average low of 65.5°F (18.6°C). The onset of June marks a slight increase in the average high-temperature, moving from a warm 73.4°F (23°C) in May to a still moderately hot 82.2°F (27.9°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Saint Elmo, Illinois, with an average temperature ranging between min 67.1°F (19.5°C) and max 83.7°F (28.7°C). July is Saint Elmo's warmest month, registering average high temperatures of 83.7°F (28.7°C) and lows of 67.1°F (19.5°C). The heat index value during July is appraised at a tropical 93.2°F (34°C). Weather in July »
Weather in August
August, the last month of the summer in Saint Elmo, is another warm month, with an average temperature ranging between min 65.1°F (18.4°C) and max 82.4°F (28°C). The commencement of August records an average high-temperature of a still warm 82.4°F (28°C), barely varying from July's 83.7°F (28.7°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Saint Elmo, Illinois, with an average temperature fluctuating between 59.4°F (15.2°C) and 77.9°F (25.5°C). As August transitions into September, Saint Elmo records an average high-temperature of a still warm 77.9°F (25.5°C), showing a gentle shift from the preceding month. Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Saint Elmo, Illinois, with temperature in the range of an average low of 48.4°F (9.1°C) and an average high of 65.1°F (18.4°C). Saint Elmo in October demonstrates a small temperature transition, adjusting from an average high of a moderately hot 77.9°F (25.5°C) in September to an enjoyable 65.1°F (18.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Saint Elmo, is another cool month, with an average temperature ranging between min 37.2°F (2.9°C) and max 51.4°F (10.8°C). With November's arrival, Saint Elmo's weather changes as the average high-temperature falls from an enjoyable 65.1°F (18.4°C) in October to a fresh 51.4°F (10.8°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Saint Elmo, Illinois, with an average temperature fluctuating between 29.5°F (-1.4°C) and 40.6°F (4.8°C). The move into December indicates a reduction in the average high-temperature, down from November's cool 51.4°F (10.8°C) to a wintry 40.6°F (4.8°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 are the coldest months in Saint Elmo?
The coldest period in Saint Elmo is January, when temperatures fluctuate between an average high of 36°F (2.2°C) and a low of 23.4°F (-4.8°C).
How many days does it rain in Saint Elmo?
In Saint Elmo, Illinois, during the entire year, the rain falls for 139.3 days and collects up to 23.94" (608mm) of precipitation.
When does it snow in Saint Elmo?
Months with snowfall are January through April, November and December.
How many days does it snow in Saint Elmo?
In Saint Elmo, during the entire year, snow falls for 18.9 days and aggregates up to 5.24" (133mm) of snow.
What is the month with the least sunshine in Saint Elmo?
January has the least sunshine of the year in Saint Elmo, with an average of 4.3h of sunshine.
When is the lowest UV index in Saint Elmo?
The months with the lowest UV index in Saint Elmo, Illinois, are January, February, November and December, with an average maximum UV index of 2.
What is the driest month in Saint Elmo?
February is the month with the least rainfall. Rain falls for 7.8 days and accumulates 1.18" (30mm) of precipitation.
When is Daylight Saving Time (DST) in Saint Elmo?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Saint Elmo, 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 Saint Elmo?
The wettest months in Saint Elmo are April and June, with an average 2.95" (75mm) of rainfall.
When it does not snow in Saint Elmo?
May through October are months without snowfall.
When are the longest days in Saint Elmo?
The month with the longest days is June, with an average of 14h and 54min of daylight.
What month has the most sunshine in Saint Elmo?
June has the most sunshine of the year in Saint Elmo, Illinois, with an average of 10.4h of sunshine.
What are the months with the highest UV index in Saint Elmo?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Saint Elmo.
What is the warmest month in Saint Elmo?
With an average high-temperature of 83.7°F (28.7°C) and an average low-temperature of 67.1°F (19.5°C), July is the warmest month in Saint Elmo.
What are the most humid months in Saint Elmo?
The months with the highest humidity in Saint Elmo are July and August, with an average relative humidity of 81%.
What is the least humid month in Saint Elmo?
October is the least humid month in Saint Elmo, with an average relative humidity of 71%.
When does it snow the most in Saint Elmo?
The month with the most snowfall in Saint Elmo, Illinois, is December, when snow falls for 3.5 days and typically aggregates up to 1.65" (42mm) of snow.
What is the month with the shortest days in Saint Elmo?
December has the shortest days of the year in Saint Elmo, Illinois, with an average of 9h and 30min of daylight.
Average temperature
Saint Elmo, IL
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36°F).
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure
Saint Elmo, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"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:
29.93"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:
30.13"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 (29.93"Hg).
Average wind speed
Saint Elmo, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.2mph - Average wind speed in March:
10mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
6mph - Average wind speed in August:
6mph - Average wind speed in September:
6.6mph - Average wind speed in October:
8.7mph - Average wind speed in November:
9.3mph - Average wind speed in December:
9.4mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
Saint Elmo, IL
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Saint Elmo, IL
- Average rainfall in January:
1.61" - Average rainfall in February:
1.18" - Average rainfall in March:
1.93" - Average rainfall in April:
2.95" - Average rainfall in May:
2.56" - Average rainfall in June:
2.95"
The wettest months (with the highest rainfall) are April and June (2.95").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days
Saint Elmo, IL
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
14.2 days - Average rainfall days in May:
15.7 days - Average rainfall days in June:
14.1 days
- Average rainfall days in July:
16 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
9.7 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
8.9 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (7.3 days).
Average snowfall
Saint Elmo, IL
The month with the highest snowfall is December (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Saint Elmo, IL
- Average snowfall days in January:
5.7 days - Average snowfall days in February:
5.6 days - Average snowfall days in March:
2.6 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:
1.1 days - Average snowfall days in December:
3.5 days
The month with the highest number of snowfall days is January (5.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Saint Elmo, 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 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 1min - Average daylight in December:
9h and 3min
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 30min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 2min - 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 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days
Saint Elmo, IL
- Average sunshine days in January:
19.5 days - Average sunshine days in February:
15.1 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
12.9 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
14.4 days - Average sunshine days in September:
16.4 days - Average sunshine days in October:
19.4 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
19.2 days
The months with the most sunshine days are January and November (19.5 days).
The months with the least sunshine days are May and July (12.3 days).
Average UV index
Saint Elmo, 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
Saint Elmo, IL
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility
Saint Elmo, 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).
Saint Elmo, Illinois, USA
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