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
The introduction of September notes a subtle temperature variation to a still warm 77.2°F (25.1°C) from August's 81°F (27.2°C). Arcola records a consistent low-temperature of 58.5°F (14.7°C) during September nights.Humidity
In September, the average relative humidity in Arcola is 76%.Rainfall
In September, in Arcola, the rain falls for 12.6 days. Throughout September, 1.42" (36mm) of precipitation is accumulated. In Arcola, Illinois, during the entire year, the rain falls for 151.5 days and collects up to 25.71" (653mm) of precipitation.Snowfall
May through September are months without snowfall in Arcola, Illinois.Daylight
The average length of the day in September is 12h and 26min.On the first day of September in Arcola, sunrise is at 6:22 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:36 pm CDT.
Sunshine
In September, the average sunshine in Arcola is 9.1h.UV index
In September, the average daily maximum UV index in Arcola is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: A maximum UV index of 5 in September translates into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What is the average September temperature in Arcola?
What is the average humidity in September in Arcola?
How many days does it rain in September in Arcola?
When it does not snow in Arcola?
Does it snow in Arcola in September?
What is the average length of the day in September in Arcola?
When is the sunrise / sunset in September in Arcola?
How long on average sun shines in September in Arcola?
What is the UV index reading in September in Arcola?
Average temperature in September
Arcola, IL
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Arcola, 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 (29.93"Hg).
Average wind speed in September
Arcola, IL
- Average wind speed in September: 7.1mph
The windiest months (with the highest average wind speed) are January and February (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in September
Arcola, 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
Arcola, IL
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is April (3.15").
The driest month (with the least rainfall) is February (1.38").
Average rainfall days in September
Arcola, IL
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in September
Arcola, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Arcola, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Arcola, IL
- Average daylight in September: 12h and 2min
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 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
Arcola, IL
- Average sunshine days in September: 15.1 days
The months with the most sunshine days are October and November (17.5 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in September
Arcola, 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
Arcola, IL
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Arcola, 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).
Arcola, Illinois, USA
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