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
During the shift to September, a minor reduction in average high-temperature is observed, shifting from a moderately hot 81.3°F (27.4°C) in August to a still warm 74.7°F (23.7°C). In Zionsville, September nights witness a steady temperature drop to a moderate 55.4°F (13°C).Humidity
In Zionsville, the average relative humidity in September is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 11.7 days and accumulates 1.97" (50mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Zionsville is 12h and 27min.On the first day of September in Zionsville, sunrise is at 6:30 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:45 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Frequently asked questions
What are September temperatures in Zionsville?
What is the average humidity in September in Zionsville?
What is the driest month in Zionsville?
How much does it rain in Zionsville in September?
When it does not snow in Zionsville?
Does it snow in Zionsville in September?
What is the average length of the day in September in Zionsville?
When is the sunrise / sunset in September in Zionsville?
How many hours of sunshine does Zionsville have in September?
What is the UV index reading in September in Zionsville?
Average temperature in September
Zionsville, PA
- Average high temperature in September: 74.7°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (34.5°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in September
Zionsville, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Zionsville, PA
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Zionsville, PA
- Average humidity in September: 78%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Zionsville, PA
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in September
Zionsville, PA
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Zionsville, PA
- Average snowfall in September: 0"
The month with the highest snowfall is March (5.16").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Zionsville, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Zionsville, PA
- 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: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Zionsville, PA
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
Zionsville, PA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Zionsville, PA
- Average cloud cover in September: 39
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Zionsville, PA
- Average visibility in September: 5mi
The months with the highest visibility are April, June, July and November (6mi).
The months with the lowest visibility are January, February, March, May, August, September, October and December (5mi).
Zionsville, Pennsylvania, USA
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