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
In September, Bunker Hill experiences a minor shift in meteorological conditions with average high-temperatures marked at a still moderately hot 78.1°F (25.6°C), closely mirroring the climate in August. Bunker Hill's nights in September experience an average temperature drop to a moderate 59.4°F (15.2°C).Humidity
The average relative humidity in September is 75%.Rainfall
In Bunker Hill, in September, during 9.1 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. Throughout the year, there are 115.4 rainfall days, and 13.23" (336mm) of precipitation is accumulated.Snowfall
In Bunker Hill, snow does not fall in April through October.Daylight
The average length of the day in September in Bunker Hill, Illinois, is 12h and 26min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:43 pm CDT.
Sunshine
The average sunshine in September in Bunker Hill is 9.2h.UV index
In September, the average daily maximum UV index in Bunker Hill is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: An average UV index of 5 in September transforms into this advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What are September temperatures in Bunker Hill?
What is the average humidity in September in Bunker Hill?
How much does it rain in Bunker Hill in September?
When it does not snow in Bunker Hill?
How many hours of daylight does Bunker Hill have in September?
When is the sunrise / sunset in September in Bunker Hill?
How long on average sun shines in September in Bunker Hill?
How high is the UV index in September in Bunker Hill?
Average temperature in September
Bunker Hill, IL
- Average high temperature in September: 78.1°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 (36°F).
- Average low temperature in September: 59.4°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (23°F).
Average pressure in September
Bunker Hill, 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 (29.92"Hg).
Average wind speed in September
Bunker Hill, IL
- Average wind speed in September: 6.4mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in September
Bunker Hill, IL
- Average humidity in September: 75%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Bunker Hill, IL
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is August (1.77").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days in September
Bunker Hill, IL
- Average rainfall days in September: 9.1 days
The months with the highest number of rainy days are May and July (13.8 days).
The month with the least rainy days is December (5.1 days).
Average snowfall in September
Bunker Hill, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Bunker Hill, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.1 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
Bunker Hill, 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 1min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Bunker Hill, IL
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is December (22.5 days).
The month with the least sunshine days is June (13.8 days).
Average UV index in September
Bunker Hill, 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
Bunker Hill, IL
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 29).
Average visibility in September
Bunker Hill, 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).
Bunker Hill, Illinois, USA
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