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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 another subzero cold winter month in Delrey, Illinois, with an average temperature fluctuating between 30.7°F (-0.7°C) and 18.7°F (-7.4°C). The month of January, characterized by an average high of 30.7°F (-0.7°C) and a low of 18.7°F (-7.4°C), is recognized as the coldest. Weather in January »
Weather in February
February, the last month of the winter in Delrey, is a wintry month, with temperature in the range of an average low of 22.3°F (-5.4°C) and an average high of 35.1°F (1.7°C). The weather during February records an average high-temperature of an icy 35.1°F (1.7°C), closely mirroring the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Delrey, Illinois, with an average temperature varying between 33.4°F (0.8°C) and 47.8°F (8.8°C). March marks a rise in the average high-temperature, moving from February's wintry 35.1°F (1.7°C) to a chilly 47.8°F (8.8°C). Weather in March »
Weather in April
April is a refreshing spring month in Delrey, Illinois, with an average temperature varying between 43.7°F (6.5°C) and 59.5°F (15.3°C). The arrival of April brings an increase in high-temperatures, moving from a chilly 47.8°F (8.8°C) in March to a mild 59.5°F (15.3°C). Weather in April »
Weather in May
May, the last month of the spring in Delrey, is a pleasant month, with an average temperature varying between 54.9°F (12.7°C) and 71.4°F (21.9°C). Delrey's transition into May is marked by a rise in the average high-temperature, advancing from a moderate 59.5°F (15.3°C) in April to an agreeable 71.4°F (21.9°C). Weather in May »
Weather in June
June, the first month of the summer in Delrey, is a moderately hot month, with temperature in the range of an average low of 62.8°F (17.1°C) and an average high of 79.3°F (26.3°C). In June, the meteorological conditions subtly change with the average high-temperature edging from a pleasant 71.4°F (21.9°C) in May to a moderately hot 79.3°F (26.3°C). Weather in June »
Weather in July
July, like June, in Delrey, Illinois, is a moderately hot summer month, with an average temperature ranging between min 64.4°F (18°C) and max 81°F (27.2°C). With an average high-temperature of 81°F (27.2°C) and an average low-temperature of 64.4°F (18°C), July is the warmest month. July's mean heat index is appraised at 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 Delrey, Illinois, with an average temperature varying between 62.6°F (17°C) and 79.9°F (26.6°C). The arrival of August brings an average high-temperature of a still warm 79.9°F (26.6°C), closely following the temperature pattern of July. Weather in August »
Weather in September
September, the first month of the autumn in Delrey, is still a warm month, with an average temperature fluctuating between 75.2°F (24°C) and 57.2°F (14°C). The onset of September notes an average high-temperature of a still moderately hot 75.2°F (24°C), subtly shifted from August's 79.9°F (26.6°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Delrey, Illinois, with an average temperature ranging between max 62.2°F (16.8°C) and min 46.8°F (8.2°C). A shift in the average high-temperature occurs in October, reducing from a moderately hot 75.2°F (24°C) in September to an enjoyable 62.2°F (16.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Delrey, Illinois, with temperature in the range of an average high of 47.8°F (8.8°C) and an average low of 34.9°F (1.6°C). November's arrival signals a significant decrease in average high-temperatures, falling from October's comfortable 62.2°F (16.8°C) to a chilly 47.8°F (8.8°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Delrey, Illinois, with an average temperature fluctuating between 36.5°F (2.5°C) and 26.2°F (-3.2°C). As December arrives, Delrey's weather displays a decrease in high-temperatures, transitioning from November's frosty 47.8°F (8.8°C) to a cold 36.5°F (2.5°C). Weather in December »
Updated: Jul 8, 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?
The lowest temperatures are recorded in January, with averages reaching a high of 30.7°F (-0.7°C) and a low of 18.7°F (-7.4°C).
What is the driest month?
January, February and December are months with the least rain when the rain falls for 5.5 days and typically aggregates up to 0.91" (23mm) of rain.
How much does it rain?
Throughout the year, there are 130.7 rainfall days, and 17.13" (435mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, November and December.
How much does it snow?
Throughout the year, in Delrey, there are 30.7 snowfall days, and 8.19" (208mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 3.8h of sunshine, January has the least sunshine of the year.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 7.6 days and typically aggregates up to 2.24" (57mm) of snow.
When is Daylight Saving Time (DST)?
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?
May is the month with the most rainfall. Rain falls for 17.3 days and accumulates 2.44" (62mm) of precipitation.
When it does not snow?
May through October are months without snowfall.
When are the longest days in Delrey?
The month with the longest days is June, with an average of 15h and 0min of daylight.
What month has the most sunshine?
With an average of 9.9h of sunshine, June has the most sunshine of the year.
What is the month with the highest UV index?
The months with the highest UV index are June and July, with an average maximum UV index of 6.
What month is the hottest in Delrey?
July, with its average high-temperature of 81°F (27.2°C) and an average low-temperature of 64.4°F (18°C), holds the record as the warmest month.
What is the most humid month?
With an average relative humidity of 85%, July is the most humid month.
What is the least humid month?
The least humid month is October, with an average relative humidity of 71%.
What is the month with the shortest days?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
When is the lowest UV index in Delrey?
With an average maximum UV index of 1, December is the month with the lowest UV index.
Average temperature
Delrey, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.7°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 (18.7°F).
Average pressure
Delrey, IL
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.11"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:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.02"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
Delrey, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
9.9mph - Average wind speed in April:
10.3mph - 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:
6.3mph - Average wind speed in September:
7.3mph - Average wind speed in October:
9.2mph - 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 (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity
Delrey, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Delrey, IL
- Average rainfall in January:
0.91" - Average rainfall in February:
0.91" - Average rainfall in March:
1.46" - Average rainfall in April:
1.93" - Average rainfall in May:
2.44" - Average rainfall in June:
1.89"
The wettest month (with the highest rainfall) is May (2.44").
The driest months (with the least rainfall) are January, February and December (0.91").
Average rainfall days
Delrey, IL
- Average rainfall days in January:
5.5 days - Average rainfall days in February:
5.5 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
13.4 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
13.9 days - Average rainfall days in August:
13 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
7.3 days - Average rainfall days in December:
7.1 days
The month with the highest number of rainy days is May (17.3 days).
The months with the least rainy days are January and February (5.5 days).
Average snowfall
Delrey, IL
The month with the highest snowfall is February (2.24").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Delrey, IL
- Average snowfall days in January:
9.6 days - Average snowfall days in February:
7.6 days - Average snowfall days in March:
4.1 days - Average snowfall days in April:
0.8 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:
0.2 days - Average snowfall days in November:
2.3 days - Average snowfall days in December:
6.1 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Delrey, 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 0min
- 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:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 4min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Delrey, IL
- Average sunshine days in January:
17.5 days - Average sunshine days in February:
16.6 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
11.4 days
- Average sunshine days in July:
11.9 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
18.4 days - Average sunshine days in November:
20.5 days - Average sunshine days in December:
18.8 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (11.4 days).
Average UV index
Delrey, 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
Delrey, IL
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility
Delrey, 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).
Delrey, Illinois, USA
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