September weather forecast
Butztown, PA

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Weather in September

September, the first month of the autumn in Butztown, is still a warm month, with an average temperature varying between 74.3°F (23.5°C) and 55°F (12.8°C).

Temperature

The arrival of September correlates with a minor temperature reduction, down from August's warm 81°F (27.2°C) to a still moderately hot 74.3°F (23.5°C). Butztown reports a consistent average low-temperature of 55°F (12.8°C) throughout September nights.

Humidity

In September, the average relative humidity is 79%.

Rainfall

September is the month with the least rainfall in Butztown. Rain falls for 11.8 days and accumulates 1.57" (40mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 27min.
On the first day of September, sunrise is at 6:29 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:44 pm EDT.

Sunshine

In September, the average sunshine is 8.8h.

UV index

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 4 during September translates into the following guidance:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays.

Frequently asked questions

What are September temperatures?

The high-temperature, in September, in Butztown, records 74.3°F (23.5°C), while the low-temperature is 55°F (12.8°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 86°F (30°C).

What is the average humidity in September?

In Butztown, the average relative humidity in September is 79%.

What is the driest month?

September is the month with the least rainfall in Butztown. Rain falls for 11.8 days and accumulates 1.57" (40mm) of precipitation.

How much does it rain in September?

In Butztown, during September, the rain falls for 11.8 days and regularly aggregates up to 1.57" (40mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September?

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

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:29 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:44 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.8h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Butztown, PA

Average temperature in September - Butztown, PA
  • Average high temperature in September: 74.3°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in September: 55°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
Butztown, PA

Average pressure in September - Butztown, 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
Butztown, PA

Average wind speed in September - Butztown, PA
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in September
Butztown, PA

Average humidity in September - Butztown, PA
  • Average humidity in September: 79%

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
Butztown, PA

Average rainfall in September - Butztown, PA
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is July (2.91").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in September
Butztown, PA

Average rainfall days in September - Butztown, PA
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in September
Butztown, PA

Average snowfall in September - Butztown, PA
  • Average snowfall in September: 0"

The month with the highest snowfall is March (4.13").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Butztown, PA

Average snowfall days in September - Butztown, PA
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Butztown, PA

Average daylight in September / Average sunshine in September - Butztown, 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 5min

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 30min).

Average sunshine days in September
Butztown, PA

Average sunshine days in September - Butztown, PA
  • Average sunshine days in September: 15.6 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11 days).

Average UV index in September
Butztown, PA

Average UV index in September - Butztown, 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
Butztown, PA

Average cloud cover in September - Butztown, PA
  • Average cloud cover in September: 39

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in September
Butztown, PA

Average visibility in September - Butztown, PA
  • Average visibility in September: 5mi

The months with the highest visibility are April, June and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September, October and December (5mi).

Butztown, Pennsylvania, USA

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