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 arrives, Westlawn's weather displays a minor decrease in high-temperatures, transitioning from August's 79.3°F (26.3°C) to a still warm 73.9°F (23.3°C). In September, Westlawn records an average nighttime temperature of 55.8°F (13.2°C).Humidity
In Westlawn, the average relative humidity in September is 79%.Rainfall
In Westlawn, in September, it is raining for 11.2 days, with typically 1.1" (28mm) of accumulated precipitation. Throughout the year, there are 128.5 rainfall days, and 15" (381mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Westlawn.Daylight
In September, the average length of the day in Westlawn is 12h and 28min.On the first day of the month, sunrise is at 7:08 am and sunset at 8:13 pm. On the last day of September, sunrise is at 7:37 am and sunset at 7:24 pm EDT.
Sunshine
The average sunshine in September is 7.9h.UV index
The average daily maximum UV index in September in Westlawn is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 4 in September transforms into this advice:
Ensure safety - Sun damage prevention is strongly urged. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
What is the temperature in September in Westlawn?
What is the average humidity in September in Westlawn?
How much does it rain in Westlawn in September?
When it does not snow in Westlawn?
Does it snow in Westlawn in September?
What is the average length of the day in September in Westlawn?
When are sunrise and sunset in September in Westlawn?
How long on average sun shines in September in Westlawn?
What is the UV index reading in September in Westlawn?
Average temperature in September
Westlawn, IN
- Average high temperature in September: 73.9°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 (19.4°F).
Average pressure in September
Westlawn, 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
Westlawn, IN
- Average wind speed in September: 7mph
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
Westlawn, 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
Westlawn, IN
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is May (1.89").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days in September
Westlawn, IN
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in September
Westlawn, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Westlawn, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.5 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
Westlawn, 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: 7h and 5min
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
Westlawn, IN
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is June (12.5 days).
Average UV index in September
Westlawn, 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
Westlawn, IN
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Westlawn, IN
- 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).
Westlawn, Indiana, USA
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