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 shift from August to September in Hershey coincides with a small decrease in the average high-temperature, down to a still warm 74.3°F (23.5°C) from 80.2°F (26.8°C). The nights of September anticipate an average low-temperature of 55.4°F (13°C).Humidity
The average relative humidity in September is 80%.Rainfall
The month with the least rainfall in Hershey, Pennsylvania, is September, when the rain falls for 12 days and typically collects 2.05" (52mm) of precipitation.Snowfall
In Hershey, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:37 pm. On the last day of September, in Hershey, sunrise is at 7:02 am and sunset at 6:49 pm EDT.
Sunshine
In September, the average sunshine in Hershey is 8.9h.UV index
In September, the average daily maximum UV index in Hershey is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 4 in September leads to these guidelines:
Exercise prevention - Warding off sunburn is urged. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What is the temperature in September in Hershey?
What is the average humidity in September in Hershey?
What is the driest month in Hershey?
How much does it rain in Hershey in September?
When it does not snow in Hershey?
Does it snow in Hershey in September?
What is the average length of the day in September in Hershey?
What time are sunrise and sunset in September in Hershey?
How long on average sun shines in September in Hershey?
What is the UV index intensity in September in Hershey?
Average temperature in September
Hershey, PA
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in September
Hershey, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Hershey, PA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Hershey, PA
- Average humidity in September: 80%
The months with the highest relative humidity are February and May (81%).
The months with the lowest relative humidity are March and April (76%).
Average rainfall in September
Hershey, PA
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in September
Hershey, PA
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in September
Hershey, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.94").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Hershey, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hershey, 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 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Hershey, PA
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (10 days).
Average UV index in September
Hershey, PA
- Average UV index in September: 4
The months with the highest UV index are May, 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
Hershey, PA
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Hershey, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are February, May, September and October (5mi).
Hershey, Pennsylvania, USA
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