September weather forecast
Hynemansville, PA

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Weather in September

The first month of the autumn, September, is still a warm month in Hynemansville, Pennsylvania, with temperature in the range of an average high of 74.5°F (23.6°C) and an average low of 55.2°F (12.9°C).

Temperature

As September arrives, Hynemansville's weather displays a minor decrease in high-temperatures, transitioning from August's moderately hot 81.1°F (27.3°C) to a still warm 74.5°F (23.6°C). Hynemansville's temperature drops to an average low of 55.2°F (12.9°C) during the nights of September.

Humidity

In Hynemansville, 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 Hynemansville.

Daylight

In September, the average length of the day is 12h and 27min.
On the first day of September, 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 Hynemansville, 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 ordinary individuals.
Note: In September, the maximum UV index of 4 suggests this advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Jul 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

An average high-temperature, in September, in Hynemansville, is 74.5°F (23.6°C) and the average low-temperature is 55.2°F (12.9°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is calculated to be 86°F (30°C).

What is the average humidity in September?

In September, the average relative humidity in Hynemansville is 78%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 11.8 days and accumulates 1.77" (45mm) of precipitation.

How many days does it rain in September?

In Hynemansville, in September, during 11.8 rainfall days, 1.77" (45mm) of precipitation is typically accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

In Hynemansville, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Hynemansville have in September?

In September, the average day length in Hynemansville, Pennsylvania, is 12h and 27min.

What time are sunrise and sunset in September?

In September, on the first day of the month, 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.

How long on average sun shines in September?

In September, the average sunshine duration is 8.7h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Hynemansville, PA

Average temperature in September - Hynemansville, 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
Hynemansville, PA

Average pressure in September - Hynemansville, 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
Hynemansville, PA

Average wind speed in September - Hynemansville, 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
Hynemansville, PA

Average humidity in September - Hynemansville, 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
Hynemansville, PA

Average rainfall in September - Hynemansville, 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
Hynemansville, PA

Average rainfall days in September - Hynemansville, 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
Hynemansville, PA

Average snowfall in September - Hynemansville, 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
Hynemansville, PA

Average snowfall days in September - Hynemansville, 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
Hynemansville, PA

Average daylight in September / Average sunshine in September - Hynemansville, PA
  • Average daylight in September: 12h and 3min

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
Hynemansville, PA

Average sunshine days in September - Hynemansville, 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
Hynemansville, PA

Average UV index in September - Hynemansville, 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
Hynemansville, PA

Average cloud cover in September - Hynemansville, 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
Hynemansville, PA

Average visibility in September - Hynemansville, 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).

Hynemansville, Pennsylvania, USA

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