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
Mount Summit indicates an average high-temperature of a still moderately hot 74.3°F (23.5°C) in September, showing minor variation from August's 79.3°F (26.3°C). In the month of September, the average low-temperature usually rests at a mild 56.8°F (13.8°C).Humidity
The average relative humidity in September is 79%.Rainfall
In September, the rain falls for 15.2 days. Throughout September, 2.09" (53mm) of precipitation is accumulated. In Mount Summit, during the entire year, the rain falls for 169.4 days and collects up to 31.77" (807mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Mount Summit, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 7:10 am and sunset at 8:12 pm. On the last day of September, sunrise is at 7:37 am and sunset at 7:24 pm EDT.
Sunshine
In Mount Summit, the average sunshine in September is 8.1h.UV index
In Mount Summit, Indiana, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 4 in September transforms into this advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Mount Summit have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Mount Summit have in September?
How high is the UV index in September?
Average temperature in September
Mount Summit, IN
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in September: 56.8°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 (20.5°F).
Average pressure in September
Mount Summit, IN
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Mount Summit, IN
- Average wind speed in September: 6.7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Mount Summit, IN
- Average humidity in September: 79%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Mount Summit, IN
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is February (1.85").
Average rainfall days in September
Mount Summit, IN
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in September
Mount Summit, IN
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Mount Summit, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mount Summit, IN
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
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 June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Mount Summit, IN
- Average sunshine days in September: 12.4 days
The months with the most sunshine days are October and November (16.1 days).
The month with the least sunshine days is May (9.1 days).
Average UV index in September
Mount Summit, IN
- Average UV index in September: 4
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Mount Summit, IN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Mount Summit, IN
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Mount Summit, Indiana, USA
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