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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 Casey, Illinois, is an icy winter month, with temperature in the range of an average high of 34.7°F (1.5°C) and an average low of 22.6°F (-5.2°C). January brings the lowest temperatures, with an average high of 34.7°F (1.5°C) and an average low of 22.6°F (-5.2°C). Weather in January »
Weather in February
February, the last month of the winter in Casey, is another cold month, with temperature in the range of an average low of 26.4°F (-3.1°C) and an average high of 39.7°F (4.3°C). The average high-temperature is a still icy 39.7°F (4.3°C) in February, hardly different from the 34.7°F (1.5°C) recorded in January. Weather in February »
Weather in March
March, the first month of the spring in Casey, is a cool month, with temperature in the range of an average low of 36.5°F (2.5°C) and an average high of 51.4°F (10.8°C). Casey's weather in March shows a rise in the average high-temperature, moving up from February's icy 39.7°F (4.3°C) to a cool 51.4°F (10.8°C). Weather in March »
Weather in April
April in Casey, Illinois, is an enjoyable spring month, with temperature in the range of an average high of 62.8°F (17.1°C) and an average low of 46.4°F (8°C). An escalation in the average high-temperature is seen with the onset of April, moving from a fresh 51.4°F (10.8°C) in March to a refreshing 62.8°F (17.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Casey, Illinois, with an average temperature ranging between max 73°F (22.8°C) and min 56.7°F (13.7°C). With the arrival of May, the average high-temperature transitions from an enjoyable 62.8°F (17.1°C) in April to a pleasant 73°F (22.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Casey, Illinois, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 64.9°F (18.3°C). June introduces a minor temperature shift, with average high-temperatures adjusting from May's agreeable 73°F (22.8°C) to a warm 81.1°F (27.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Casey, Illinois, with an average temperature fluctuating between 82.9°F (28.3°C) and 66.4°F (19.1°C). The highest temperatures are recorded in July, with averages reaching a high of 82.9°F (28.3°C) and a low of 66.4°F (19.1°C). Throughout July, the heat index is estimated at 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 Casey, Illinois, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 81.7°F (27.6°C). The initiation of August sees an average high-temperature of a still warm 81.7°F (27.6°C), showing minor variations from the previous month. Weather in August »
Weather in September
September, the first month of the autumn in Casey, is still a warm month, with an average temperature fluctuating between 59.2°F (15.1°C) and 77.4°F (25.2°C). The onset of September brings an average high-temperature of a still warm 77.4°F (25.2°C), nearly matching the August temperature. Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Casey, Illinois, with an average temperature ranging between max 64.2°F (17.9°C) and min 48.4°F (9.1°C). October's onset brings a slight change in high-temperatures, falling from a warm 77.4°F (25.2°C) in September to a refreshing 64.2°F (17.9°C). Weather in October »
Weather in November
November, the last month of the autumn in Casey, is another cool month, with an average temperature varying between 50.5°F (10.3°C) and 36.5°F (2.5°C). The onset of November introduces a moderate change in Casey's weather, with average high-temperatures falling from October's refreshing 64.2°F (17.9°C) to a fresh 50.5°F (10.3°C). Weather in November »
Weather in December
December, the first month of the winter in Casey, is also a wintry month, with temperature in the range of an average high of 39.7°F (4.3°C) and an average low of 28.9°F (-1.7°C). December's arrival comes with a decrease in the average high-temperature, moving from a fresh 50.5°F (10.3°C) in November to a wintry 39.7°F (4.3°C). Weather in December »
[Resources]Frequently asked questions
What month is the coldest in Casey?
January is Casey's coldest month, registering average high temperatures of 34.7°F (1.5°C) and lows of 22.6°F (-5.2°C).
How many days does it rain in Casey?
Throughout the year, in Casey, Illinois, there are 115.9 rainfall days, and 11.26" (286mm) of precipitation is accumulated.
When does it snow in Casey?
Months with snowfall in Casey are January through April, November and December.
How much does it snow in Casey?
Throughout the year, in Casey, Illinois, there are 18.9 snowfall days, and 1.73" (44mm) of snow is accumulated.
What is the month with the least sunshine in Casey?
With an average of 4.1h of sunshine, January has the least sunshine of the year in Casey.
What is the driest month in Casey?
The month with the least rainfall is February, when the rain falls for 6 days and typically collects 0.47" (12mm) of precipitation.
When is Daylight Saving Time (DST) in Casey?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Casey, Illinois, 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 Casey?
The month with the most rainfall is April, when the rain falls for 12.6 days and typically aggregates up to 1.54" (39mm) of precipitation.
When it does not snow in Casey?
May through October are months without snowfall in Casey, Illinois.
When are the longest days in Casey?
The month with the longest days in Casey, Illinois, is June, with an average of 14h and 54min of daylight.
What month has the most sunshine in Casey?
The month with the most sunshine is June, with an average of 10.4h of sunshine.
What is the month with the highest UV index in Casey?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Casey, Illinois.
What is the warmest month in Casey?
July, with an average high of 82.9°F (28.3°C) and a low of 66.4°F (19.1°C), signifies the warmest month of the year in Casey, Illinois.
What is the most humid month in Casey?
With an average relative humidity of 83%, July is the most humid month.
What is the least humid month in Casey?
The least humid month is October, with an average relative humidity of 71%.
When does it snow the most in Casey?
December is the month with the most snowfall in Casey. Snow falls for 4 days and accumulates 0.47" (12mm) of snow.
What is the month with the shortest days in Casey?
The month with the shortest days in Casey is December, with an average of 9h and 30min of daylight.
When is the lowest UV index in Casey?
With an average maximum UV index of 1, December is the month with the lowest UV index in Casey.
Average temperature
Casey, 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 (34.7°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 (22.6°F).
Average pressure
Casey, IL
- Average pressure in January:
30.15"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:
29.93"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:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Casey, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.1mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.4mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.1mph - Average wind speed in August:
6.1mph - Average wind speed in September:
6.9mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.6mph - Average wind speed in December:
9.6mph
The windiest months (with the highest average wind speed) are January and February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.1mph).
Average humidity
Casey, IL
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Casey, IL
- Average rainfall in January:
0.75" - Average rainfall in February:
0.47" - Average rainfall in March:
0.79" - Average rainfall in April:
1.54" - Average rainfall in May:
1.34" - Average rainfall in June:
1.38"
- Average rainfall in July:
1.22" - Average rainfall in August:
0.87" - Average rainfall in September:
0.55" - Average rainfall in October:
0.98" - Average rainfall in November:
0.59" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is April (1.54").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days
Casey, IL
- Average rainfall days in January:
6.4 days - Average rainfall days in February:
6 days - Average rainfall days in March:
10 days - Average rainfall days in April:
12.6 days - Average rainfall days in May:
14.9 days - Average rainfall days in June:
12.6 days
- Average rainfall days in July:
12.5 days - Average rainfall days in August:
10.6 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
7.7 days - Average rainfall days in November:
6.6 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is February (6 days).
Average snowfall
Casey, IL
The month with the highest snowfall is December (0.47").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Casey, IL
- Average snowfall days in January:
5.8 days - Average snowfall days in February:
4.7 days - Average snowfall days in March:
2.7 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 days - Average snowfall days in November:
1.4 days - Average snowfall days in December:
4 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Casey, IL
- Average daylight in January:
9h and 5min - 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 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 1min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 0min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
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 6min).
Average sunshine days
Casey, IL
- Average sunshine days in January:
20.6 days - Average sunshine days in February:
17.6 days - Average sunshine days in March:
17.3 days - Average sunshine days in April:
14.8 days - Average sunshine days in May:
12.4 days - Average sunshine days in June:
13.4 days
- Average sunshine days in July:
14.3 days - Average sunshine days in August:
16.5 days - Average sunshine days in September:
18.2 days - Average sunshine days in October:
21.2 days - Average sunshine days in November:
21 days - Average sunshine days in December:
20.8 days
The month with the most sunshine days is October (21.2 days).
The month with the least sunshine days is May (12.4 days).
Average UV index
Casey, IL
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Casey, IL
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility
Casey, IL
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Casey, Illinois, USA
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