September weather forecastRichview, IL
September
Weather in September
September, the first month of the autumn in Richview, is also a moderately hot month, with an average temperature varying between 59.9°F (15.5°C) and 78.4°F (25.8°C).Temperature
September ushers in a minute temperature change, with average high-temperatures reducing from August's 83.8°F (28.8°C) to a still warm 78.4°F (25.8°C). Richview witnesses a consistent average low-temperature of 59.9°F (15.5°C) throughout September.Humidity
In September, the average relative humidity is 75%.Rainfall
The month with the least rainfall in Richview, Illinois, is September, when the rain falls for 6.3 days and typically collects 0.24" (6mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Richview, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:26 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:40 pm CDT.
Sunshine
In Richview, the average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index in Richview, Illinois, is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 5 in September translates into this advice:
Be vigilant - Preventing sunburn is recommended. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Richview, IL
- Average high temperature in September: 78.4°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37.2°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Richview, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Richview, IL
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is February (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in September
Richview, IL
- Average humidity in September: 75%
The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Richview, IL
- Average rainfall in September: 0.24"
The wettest months (with the highest rainfall) are April and July (0.75").
The driest month (with the least rainfall) is September (0.24").
Average rainfall days in September
Richview, IL
- Average rainfall days in September: 6.3 days
The month with the highest number of rainy days is May (10.1 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in September
Richview, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Richview, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.8 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
Richview, IL
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 6min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Richview, IL
- Average sunshine days in September: 21.4 days
The months with the most sunshine days are January and December (24.5 days).
The month with the least sunshine days is May (16.8 days).
Average UV index in September
Richview, IL
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Richview, IL
- Average cloud cover in September: 30
The months with the most cloud cover are January and February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in September
Richview, IL
- 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).
