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
Westchester experiences a recorded average high-temperature of a still moderately hot 73.8°F (23.2°C) in September, closely aligned with August's 79°F (26.1°C). An average minimum temperature of 56.3°F (13.5°C) marks the month of September.Humidity
In September, the average relative humidity is 79%.Rainfall
In September, in Westchester, Indiana, the rain falls for 9.9 days. Throughout September, 0.55" (14mm) of precipitation is accumulated. Throughout the year, there are 108.6 rainfall days, and 8.74" (222mm) of precipitation is accumulated.Snowfall
In Westchester, snow does not fall in May through September.Daylight
In Westchester, the average length of the day in September is 12h and 27min.On the first day of September in Westchester, sunrise is at 7:07 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:22 pm EDT.
Sunshine
In Westchester, the average sunshine in September is 7.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 4 in September transforms into this advice:
Guard yourself - Precautionary measures against sun damage are advocated. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Frequently asked questions
What is the average September temperature in Westchester?
What is the average humidity in September in Westchester?
How many days does it rain in September in Westchester?
When it does not snow in Westchester?
Does it snow in Westchester in September?
What is the average length of the day in September in Westchester?
What time are sunrise and sunset in September in Westchester?
How many hours of sunshine does Westchester have in September?
How high is the UV index in September in Westchester?
Average temperature in September
Westchester, 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 (31.6°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in September
Westchester, IN
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Westchester, IN
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in September
Westchester, 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
Westchester, IN
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in September
Westchester, IN
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is May (13.9 days).
The months with the least rainy days are January and February (4.8 days).
Average snowfall in September
Westchester, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.75").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Westchester, 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
Westchester, 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 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 24min).
Average sunshine days in September
Westchester, IN
- Average sunshine days in September: 16.9 days
The months with the most sunshine days are October and November (19.7 days).
The month with the least sunshine days is June (13.3 days).
Average UV index in September
Westchester, IN
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Westchester, IN
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in September
Westchester, IN
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
Westchester, Indiana, USA
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