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 arrival of September suggests a slight decrease in the average high-temperature, moving from a moderately hot 83.1°F (28.4°C) in August to a still warm 77.2°F (25.1°C). Throughout the month of September, Arlington Heights reports a steady low-temperature average of 58.6°F (14.8°C).Humidity
August through October, with an average relative humidity of 74%, are the least humid months.Rainfall
September is the month with the least rainfall. Rain falls for 9.3 days and accumulates 0.63" (16mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 7:07 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:21 pm EDT.
Sunshine
In Arlington Heights, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 5 translates into these guidelines:
Adopt protective measures - It is advised to guard against sun damage. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What are the least humid months in Arlington Heights?
What is the average humidity in September in Arlington Heights?
What is the driest month?
How much does it rain in September?
When it does not snow in Arlington Heights?
How many hours of daylight does Arlington Heights have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September in Arlington Heights?
Average temperature in September
Arlington Heights, OH
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in September: 58.6°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 (23.2°F).
Average pressure in September
Arlington Heights, OH
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Arlington Heights, OH
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Arlington Heights, OH
- Average humidity in September: 74%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are August, September and October (74%).
Average rainfall in September
Arlington Heights, OH
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is May (1.42").
The driest month (with the least rainfall) is September (0.63").
Average rainfall days in September
Arlington Heights, OH
- Average rainfall days in September: 9.3 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is November (6.5 days).
Average snowfall in September
Arlington Heights, OH
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Arlington Heights, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.1 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
Arlington Heights, OH
- 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 30min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Arlington Heights, OH
- Average sunshine days in September: 18.9 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (14 days).
Average UV index in September
Arlington Heights, OH
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Arlington Heights, OH
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Arlington Heights, OH
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Arlington Heights, Ohio, USA
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