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
Transitioning from August to September, Brookville observes an average high-temperature of a still warm 75.9°F (24.4°C), differing subtly from the previous month. Brookville sees an average low-temperature of 57.6°F (14.2°C) during September.Humidity
In September, the average relative humidity is 77%.Rainfall
September is the month with the least rainfall. Rain falls for 13.1 days and accumulates 1.65" (42mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Brookville, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 7:09 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:23 pm EDT.
Sunshine
In Brookville, the average sunshine in September is 8.2h.UV index
In Brookville, Indiana, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Adopt protective measures - It is advised to guard against sun damage. The solar radiation around mid-day is intense; avoid the Sun and stay safe. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How much does it rain in Brookville in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Brookville have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Brookville have in September?
What is the UV index intensity in September?
Average temperature in September
Brookville, IN
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in September: 57.6°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in September
Brookville, IN
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Brookville, IN
- Average wind speed in September: 6.2mph
The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Brookville, IN
- Average humidity in September: 77%
The months with the highest relative humidity are January, May, July and December (82%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Brookville, IN
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in September
Brookville, IN
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is February (8 days).
Average snowfall in September
Brookville, IN
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.89").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Brookville, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.8 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
Brookville, IN
- 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 24min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Brookville, IN
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in September
Brookville, IN
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Brookville, IN
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Brookville, IN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Brookville, Indiana, USA
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