September weather forecastRussell, IL
September
Weather in September
September, the first month of the autumn in Russell, is still a pleasant month, with an average temperature fluctuating between 70.9°F (21.6°C) and 58.5°F (14.7°C).Temperature
September implies a soft temperature shift, with average high-temperatures reducing from August's moderately hot 77°F (25°C) to a pleasant 70.9°F (21.6°C). Russell's nighttime temperature during September is consistently averaged at a moderate 58.5°F (14.7°C).Humidity
In Russell, the average relative humidity in September is 77%.Rainfall
In Russell, during September, the rain falls for 12.7 days and regularly aggregates up to 1.73" (44mm) of precipitation. Throughout the year, there are 142.5 rainfall days, and 21.5" (546mm) of precipitation is accumulated.Snowfall
In Russell, Illinois, snow does not fall in May through September.Daylight
The average length of the day in September in Russell is 12h and 28min.On the first day of September in Russell, sunrise is at 6:17 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:34 pm CDT.
Sunshine
In Russell, the average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index in Russell, Illinois, is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Russell, IL
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in September: 58.5°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 (18.3°F).
Average pressure in September
Russell, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Russell, IL
- Average wind speed in September: 8.8mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in September
Russell, IL
- Average humidity in September: 77%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in September
Russell, IL
- Average rainfall in September: 1.73"
The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in September
Russell, IL
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in September
Russell, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Russell, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Russell, IL
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 12min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Russell, IL
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Russell, IL
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Russell, IL
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Russell, 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).
