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 August makes way for September, Helfrichsville's average high-temperature eases from a moderately hot 81.1°F (27.3°C) to a still warm 74.5°F (23.6°C). Throughout the nights in September, an average low-temperature of 55.2°F (12.9°C) is noted in Helfrichsville.Humidity
In Helfrichsville, the average relative humidity in September is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.77" (45mm) of precipitation.Snowfall
June through September are months without snowfall in Helfrichsville.Daylight
The average length of the day in September is 12h and 27min.On the first day of September in Helfrichsville, sunrise is at 6:30 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:46 pm EDT.
Sunshine
In Helfrichsville, Pennsylvania, the average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
What is the usual temperature for Helfrichsville in September?
What is the average humidity in September in Helfrichsville?
What is the driest month in Helfrichsville?
How much does it rain in Helfrichsville in September?
When it does not snow in Helfrichsville?
Does it snow in Helfrichsville in September?
What is the average length of the day in September in Helfrichsville?
When are sunrise and sunset in September in Helfrichsville?
How many hours of sunshine does Helfrichsville have in September?
What is the UV index intensity in September in Helfrichsville?
Average temperature in September
Helfrichsville, PA
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in September: 55.2°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 (21.6°F).
Average pressure in September
Helfrichsville, 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
Helfrichsville, 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
Helfrichsville, PA
- Average humidity in September: 78%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in September
Helfrichsville, PA
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is April (2.99").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in September
Helfrichsville, PA
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in September
Helfrichsville, PA
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Helfrichsville, PA
- 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 June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Helfrichsville, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Helfrichsville, PA
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is April (11.2 days).
Average UV index in September
Helfrichsville, 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
Helfrichsville, 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
Helfrichsville, 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).
Helfrichsville, Pennsylvania, USA
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