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
As September begins, there is a minor decrease in the average high-temperature, softly falling from 79.3°F (26.3°C) in August to a still moderately hot 73.8°F (23.2°C). An average low-temperature of 55.8°F (13.2°C) is recorded in the month of September in Uniondale.Humidity
In Uniondale, the average relative humidity in September is 79%.Rainfall
In Uniondale, Indiana, in September, during 14.1 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. Throughout the year, in Uniondale, there are 161.7 rainfall days, and 28.39" (721mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Uniondale.Daylight
In Uniondale, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 7:08 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 Uniondale, the average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September in Uniondale, Indiana, is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Uniondale in September?
What is the average humidity in September in Uniondale?
How many days does it rain in September in Uniondale?
When it does not snow in Uniondale?
Does it snow in Uniondale in September?
What is the average length of the day in September in Uniondale?
When is the sunrise / sunset in September in Uniondale?
How long on average sun shines in September in Uniondale?
What is the UV index reading in September in Uniondale?
Average temperature in September
Uniondale, 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 (31.1°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 (19.8°F).
Average pressure in September
Uniondale, 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
Uniondale, IN
- Average wind speed in September: 6.9mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in September
Uniondale, IN
- Average humidity in September: 79%
The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Uniondale, IN
- Average rainfall in September: 1.81"
The wettest months (with the highest rainfall) are April and May (3.35").
The driest month (with the least rainfall) is February (1.69").
Average rainfall days in September
Uniondale, IN
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (7 days).
Average snowfall in September
Uniondale, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Uniondale, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Uniondale, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Uniondale, IN
- Average sunshine days in September: 14 days
The month with the most sunshine days is November (15.7 days).
The month with the least sunshine days is May (10.2 days).
Average UV index in September
Uniondale, 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
Uniondale, IN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Uniondale, IN
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, September, October, November and December (6mi).
The months with the lowest visibility are January, February and August (5mi).
Uniondale, Indiana, USA
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