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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 another cold winter month in Oreana, Illinois, with an average temperature varying between 21.2°F (-6°C) and 32.9°F (0.5°C). The coldest time of the year is January, with temperatures averaging a high of 32.9°F (0.5°C) and a low of 21.2°F (-6°C). Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in Oreana, Illinois, with an average temperature fluctuating between 25.2°F (-3.8°C) and 37.8°F (3.2°C). The advent of February presents an average high-temperature of a still wintry 37.8°F (3.2°C), maintaining a close correlation with the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Oreana, Illinois, with temperature in the range of an average high of 50.5°F (10.3°C) and an average low of 35.6°F (2°C). Observing a rise in March, the average high-temperature goes from February's cold 37.8°F (3.2°C) to a cool 50.5°F (10.3°C). Weather in March »
Weather in April
April in Oreana, Illinois, is an enjoyable spring month, with an average temperature fluctuating between 46°F (7.8°C) and 61.9°F (16.6°C). The transition from March to April brings a temperature rise, with average high-temperatures increasing from a fresh 50.5°F (10.3°C) to a refreshing 61.9°F (16.6°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Oreana, Illinois, with an average temperature varying between 72.9°F (22.7°C) and 56.7°F (13.7°C). The onset of May brings a temperature shift, with the average high-temperature moving from a refreshing 61.9°F (16.6°C) in April to a pleasant 72.9°F (22.7°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Oreana, Illinois, with an average temperature fluctuating between 64°F (17.8°C) and 80.6°F (27°C). With the onset of June, the average high-temperature subtly transitions from a pleasant 72.9°F (22.7°C) in May to a warm 80.6°F (27°C). Weather in June »
Weather in July
July, like June, in Oreana, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 65.7°F (18.7°C) and 82°F (27.8°C). July, with its average high-temperature of 82°F (27.8°C) and an average low-temperature of 65.7°F (18.7°C), holds the record as the warmest month. During July, the heat index is computed to be a tropical 89.6°F (32°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Oreana, Illinois, with temperature in the range of an average low of 63.9°F (17.7°C) and an average high of 81.1°F (27.3°C). Oreana's August showcases an average high-temperature of a still moderately hot 81.1°F (27.3°C), hardly distinct from July's 82°F (27.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Oreana, Illinois, with an average temperature fluctuating between 58.5°F (14.7°C) and 77°F (25°C). Oreana starts September with an average high-temperature of a still moderately hot 77°F (25°C), hinting at a minimal fluctuation from August. Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Oreana, Illinois, with an average temperature varying between 48°F (8.9°C) and 64°F (17.8°C). Oreana's weather in October involves a decrease in the average high-temperature, moving down from September's moderately hot 77°F (25°C) to a refreshing 64°F (17.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Oreana, Illinois, with an average temperature ranging between min 36.1°F (2.3°C) and max 49.8°F (9.9°C). The transition into November involves a decrease in the average high-temperature, falling from a comfortable 64°F (17.8°C) in October to a frosty 49.8°F (9.9°C). Weather in November »
Weather in December
December, the first month of the winter in Oreana, is also a wintry month, with temperature in the range of an average low of 27.9°F (-2.3°C) and an average high of 38.5°F (3.6°C). December's arrival correlates with a reduction in the average high-temperature, down from a frosty 49.8°F (9.9°C) in November to an icy 38.5°F (3.6°C). Weather in December »
[Resources]Frequently asked questions
What part of the year is the coldest in Oreana?
January stands out as Oreana's coldest month, with temperatures ranging between an average high of 32.9°F (0.5°C) and a low of 21.2°F (-6°C).
How much does it rain in Oreana?
Throughout the year, in Oreana, there are 130.2 rainfall days, and 16.34" (415mm) of precipitation is accumulated.
When does it snow in Oreana?
Months with snowfall are January through April, November and December.
What is the snowiest month in Oreana?
January is the month with the most snowfall in Oreana. Snow falls for 7.2 days and accumulates 1.85" (47mm) of snow.
How much does it snow in Oreana?
Throughout the year, in Oreana, there are 23.1 snowfall days, and 5.67" (144mm) of snow is accumulated.
What is the month with the least sunshine in Oreana?
January has the least sunshine of the year in Oreana, Illinois, with an average of 4.1h of sunshine.
What are the months with the lowest UV index in Oreana?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the driest month in Oreana?
February and December are months with the least rain in Oreana when the rain falls for 5.8 days and typically aggregates up to 0.87" (22mm) of rain.
When is Daylight Saving Time (DST) in Oreana?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Oreana, 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 wettest month in Oreana?
May is the month with the most rainfall. Rain falls for 17 days and accumulates 2.01" (51mm) of precipitation.
When it does not snow in Oreana?
In Oreana, Illinois, snow does not fall in May through October.
When are the longest days in Oreana?
The month with the longest days in Oreana is June, with an average of 15h and 0min of daylight.
What month has the most sunshine in Oreana?
With an average of 10.4h of sunshine, June has the most sunshine of the year in Oreana, Illinois.
What are the months with the highest UV index in Oreana?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Oreana, Illinois.
What time of the year is the hottest in Oreana?
Oreana's temperatures tend to reach their peak averages in July, with a high of 82°F (27.8°C) and a low of 65.7°F (18.7°C).
What is the most humid month in Oreana?
The most humid month in Oreana is July, with an average relative humidity of 84%.
What is the least humid month in Oreana?
With an average relative humidity of 70%, October is the least humid month.
What is the month with the shortest days in Oreana?
With an average of 9h and 24min of daylight, December has the shortest days of the year in Oreana, Illinois.
Average temperature
Oreana, IL
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.9°F).
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure
Oreana, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"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:
30.03"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Oreana, IL
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.2mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10.1mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity
Oreana, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Oreana, IL
- Average rainfall in January:
1.06" - Average rainfall in February:
0.87" - Average rainfall in March:
1.3" - Average rainfall in April:
1.93" - Average rainfall in May:
2.01" - Average rainfall in June:
1.93"
- Average rainfall in July:
1.54" - Average rainfall in August:
1.5" - Average rainfall in September:
1.18" - Average rainfall in October:
1.22" - Average rainfall in November:
0.94" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is May (2.01").
The driest months (with the least rainfall) are February and December (0.87").
Average rainfall days
Oreana, IL
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
13.6 days - Average rainfall days in May:
17 days - Average rainfall days in June:
13.7 days
- Average rainfall days in July:
14.8 days - Average rainfall days in August:
11.8 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
8.4 days - Average rainfall days in December:
7.1 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (5.8 days).
Average snowfall
Oreana, IL
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Oreana, IL
- Average snowfall days in January:
7.2 days - Average snowfall days in February:
5.9 days - Average snowfall days in March:
2.6 days - Average snowfall days in April:
0.5 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:
1.6 days - Average snowfall days in December:
5.3 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Oreana, 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 2min - 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:
10h and 0min - 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 24min).
- 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:
9h and 2min - 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 6min).
Average sunshine days
Oreana, IL
- Average sunshine days in January:
19.5 days - Average sunshine days in February:
16.7 days - Average sunshine days in March:
16.4 days - Average sunshine days in April:
14.5 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
13 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
16.6 days - Average sunshine days in September:
17.3 days - Average sunshine days in October:
19.8 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
19.4 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (11.5 days).
Average UV index
Oreana, 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
Oreana, IL
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility
Oreana, 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).
Oreana, Illinois, USA
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