September weather forecast
Macungie, PA

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Weather in September

The first month of the autumn, September, is still a warm month in Macungie, Pennsylvania, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 74.7°F (23.7°C).

Temperature

A modest decline in the average high-temperature is seen during September, decreasing from 81.3°F (27.4°C) in August to a still moderately hot 74.7°F (23.7°C). Nighttime temperatures consistently average a mild 55.4°F (13°C) during September.

Humidity

In September, the average relative humidity is 78%.

Rainfall

The month with the least rainfall is September, when the rain falls for 11.7 days and typically collects 1.97" (50mm) of precipitation.

Snowfall

In Macungie, snow does not fall in June through September.

Daylight

In Macungie, Pennsylvania, the average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 6:30 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:45 pm EDT.

Sunshine

In September, the average sunshine in Macungie is 8.6h.

UV index

In Macungie, the average daily maximum UV index in September 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 average individuals.
Note: In September, the maximum UV index of 4 translates into these guidelines:
Be vigilant - Preventing sunburn is recommended. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. To cut down UV radiation exposure by about half, sport a wide-brim hat.

Frequently asked questions

What is the usual temperature for Macungie in September?

The average high-temperature and low-temperature during September are 74.7°F (23.7°C) and 55.4°F (13°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is estimated at 86°F (30°C).

What is the average humidity in September?

The average relative humidity in September is 78%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 11.7 days and typically collects 1.97" (50mm) of precipitation.

How much does it rain in September?

In Macungie, in September, during 11.7 rainfall days, 1.97" (50mm) of precipitation is typically accumulated.

When it does not snow?

In Macungie, Pennsylvania, snow does not fall in June through September.

Does it snow in September?

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

What is the average length of the day in September?

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

What time are sunrise and sunset in September?

On the first day of September in Macungie, 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.

How long on average sun shines in September?

In Macungie, the average sunshine duration in September is 8.6h.

How high is the UV index in September?

In Macungie, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to 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
Macungie, PA

Average temperature in September - Macungie, 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
Macungie, PA

Average pressure in September - Macungie, 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
Macungie, PA

Average wind speed in September - Macungie, 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
Macungie, PA

Average humidity in September - Macungie, 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
Macungie, PA

Average rainfall in September - Macungie, 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
Macungie, PA

Average rainfall days in September - Macungie, 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
Macungie, PA

Average snowfall in September - Macungie, 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
Macungie, PA

Average snowfall days in September - Macungie, 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
Macungie, PA

Average daylight in September / Average sunshine in September - Macungie, 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
Macungie, PA

Average sunshine days in September - Macungie, 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
Macungie, PA

Average UV index in September - Macungie, 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
Macungie, PA

Average cloud cover in September - Macungie, 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
Macungie, PA

Average visibility in September - Macungie, 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).

Macungie, Pennsylvania, USA

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