September weather forecastMapleton, IL
September
Weather in September
September, the first month of the autumn in Mapleton, is also a moderately hot month, with temperature in the range of an average high of 76.3°F (24.6°C) and an average low of 57.2°F (14°C).Temperature
September brings an average high-temperature of a still warm 76.3°F (24.6°C), showing a slight difference from August's 81.3°F (27.4°C). Throughout September, an average low-temperature of 57.2°F (14°C) is expected.Humidity
In Mapleton, the average relative humidity in September is 76%.Rainfall
In September, the rain falls for 12.3 days. Throughout September, 2.48" (63mm) of precipitation is accumulated. Throughout the year, there are 153.3 rainfall days, and 29.61" (752mm) of precipitation is accumulated.Snowfall
In Mapleton, snow does not fall in May through September.Daylight
In Mapleton, the average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:26 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:42 pm CDT.
Sunshine
The average sunshine in September is 9.2h.UV index
In Mapleton, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Be vigilant - Preventing sunburn is recommended. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mapleton, IL
- Average high temperature in September: 76.3°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in September: 57.2°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in September
Mapleton, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Mapleton, IL
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in September
Mapleton, 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 (71%).
Average rainfall in September
Mapleton, IL
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days in September
Mapleton, IL
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in September
Mapleton, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.86").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Mapleton, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.6 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
Mapleton, IL
- Average daylight in September: 12h and 24min
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 18min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Mapleton, IL
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (10 days).
Average UV index in September
Mapleton, IL
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Mapleton, IL
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in September
Mapleton, 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).
