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
The start of September comes with a small reduction in the average high-temperature, subtly receding from 79.3°F (26.3°C) in August to a still moderately hot 73.8°F (23.2°C). Mahon temperatures generally rest at a low of 55.8°F (13.2°C) during the September nights.Humidity
The average relative humidity in September is 79%.Rainfall
In Mahon, in September, during 10.8 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. In Mahon, during the entire year, the rain falls for 125.6 days and collects up to 12.8" (325mm) of precipitation.Snowfall
In Mahon, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 27min.On the first day of September in Mahon, Indiana, sunrise is at 7:09 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 7:24 pm EDT.
Sunshine
The average sunshine in September in Mahon is 8h.UV index
In Mahon, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Mahon?
What is the average humidity in September in Mahon?
How many days does it rain in September in Mahon?
When it does not snow in Mahon?
Does it snow in Mahon in September?
What is the average length of the day in September in Mahon?
What time are sunrise and sunset in September in Mahon?
How long on average sun shines in September in Mahon?
How high is the UV index in September in Mahon?
Average temperature in September
Mahon, IN
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in September: 55.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in September
Mahon, IN
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Mahon, IN
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in September
Mahon, IN
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Mahon, IN
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is May (1.65").
The driest month (with the least rainfall) is February (0.63").
Average rainfall days in September
Mahon, IN
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Mahon, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mahon, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mahon, IN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Mahon, IN
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in September
Mahon, IN
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Mahon, IN
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Mahon, IN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Mahon, Indiana, USA
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