Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Oreana starts September with an average high-temperature of a still moderately hot 77°F (25°C), hinting at a minimal fluctuation from August. Throughout September, Oreana experiences a low-temperature average of 58.5°F (14.7°C).Humidity
The average relative humidity in September is 76%.Rainfall
In Oreana, in September, during 10.6 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. Throughout the year, there are 130.2 rainfall days, and 16.34" (415mm) of precipitation is accumulated.Snowfall
In Oreana, Illinois, snow does not fall in May through October.Daylight
In Oreana, the average length of the day in September is 12h and 26min.On the first day of September in Oreana, Illinois, sunrise is at 6:24 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:38 pm CDT.
Sunshine
The average sunshine in September in Oreana is 9.2h.UV index
The average daily maximum UV index in September in Oreana is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Exercise prevention - Precautions against solar damage are endorsed. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What are the temperatures in Oreana in September?
What is the average humidity in September in Oreana?
How many days does it rain in September in Oreana?
When it does not snow in Oreana?
How many hours of daylight does Oreana have in September?
When is the sunrise / sunset in September in Oreana?
How many hours of sunshine does Oreana have in September?
What is the UV index reading in September in Oreana?
Average temperature in September
Oreana, IL
- Average high temperature in September: 77°F
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).
- Average low temperature in September: 58.5°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 in September
Oreana, IL
- Average pressure in September: 30.03"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 in September
Oreana, IL
- Average wind speed in September: 7.2mph
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 in September
Oreana, IL
- Average humidity in September: 76%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Oreana, IL
- Average rainfall in September: 1.18"
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 in September
Oreana, IL
- Average rainfall days in September: 10.6 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 in September
Oreana, IL
- Average snowfall in September: 0"
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 in September
Oreana, IL
- Average snowfall days in September: 0 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 in September /
Average sunshine in September
Oreana, IL
- Average daylight in September: 12h 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 September: 9h and 1min
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 in September
Oreana, IL
- Average sunshine days in September: 17.3 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 in September
Oreana, IL
- Average UV index in September: 5
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 in September
Oreana, IL
- Average cloud cover in September: 29
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 in September
Oreana, IL
- Average visibility in September: 6mi
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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