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
Rockbridge greets September with an average high-temperature of a still moderately hot 78.3°F (25.7°C), marking a slight deviation from the preceding month. Throughout September, a steady low-temperature average of 59.2°F (15.1°C) is noted.Humidity
In September, the average relative humidity in Rockbridge is 74%.Rainfall
In Rockbridge, in September, during 10.4 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. In Rockbridge, during the entire year, the rain falls for 120.6 days and collects up to 14.17" (360mm) of precipitation.Snowfall
In Rockbridge, snow does not fall in April through October.Daylight
In Rockbridge, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:31 pm. On the last day of September, in Rockbridge, sunrise is at 6:56 am and sunset at 6:44 pm CDT.
Sunshine
The average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index in Rockbridge is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Rockbridge in September?
What is the average humidity in September in Rockbridge?
How many days does it rain in September in Rockbridge?
When it does not snow in Rockbridge?
How many hours of daylight does Rockbridge have in September?
When is the sunrise / sunset in September in Rockbridge?
How many hours of sunshine does Rockbridge have in September?
What is the UV index intensity in September in Rockbridge?
Average temperature in September
Rockbridge, IL
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in September: 59.2°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in September
Rockbridge, IL
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Rockbridge, IL
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in September
Rockbridge, IL
- Average humidity in September: 74%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Rockbridge, IL
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is June (1.93").
The driest month (with the least rainfall) is November (0.67").
Average rainfall days in September
Rockbridge, IL
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
Rockbridge, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Rockbridge, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (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
Rockbridge, 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 30min).
- Average sunshine in September: 9h and 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Rockbridge, IL
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in September
Rockbridge, 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
Rockbridge, IL
- Average cloud cover in September: 28
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are August and September (Cloud cover 28).
Average visibility in September
Rockbridge, 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).
Rockbridge, Illinois, USA
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