September weather forecast
Windsor, PA

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Weather in September

The first month of the autumn, September, is still a warm month in Windsor, Pennsylvania, with an average temperature ranging between max 75°F (23.9°C) and min 57.2°F (14°C).

Temperature

September is characterized by a mild reduction in the average high-temperature, from a warm 81°F (27.2°C) in August to a still moderately hot 75°F (23.9°C). The average low-temperature during September nights is a moderate 57.2°F (14°C).

Humidity

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

Rainfall

In Windsor, in September, it is raining for 12.1 days, with typically 1.61" (41mm) of accumulated precipitation. Throughout the year, there are 139.8 rainfall days, and 22.95" (583mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in September is 12h and 26min.
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, sunrise is at 7:02 am and sunset at 6:49 pm EDT.

Sunshine

In September, the average sunshine in Windsor is 8.9h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. To protect against the Sun's most potent rays, avoid direct exposure around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.

Frequently asked questions

What are the temperatures in September?

September temperatures vary between a high-temperature of 75°F (23.9°C) and a low-temperature of 57.2°F (14°C). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in August is appraised at 86°F (30°C).

What is the average humidity in September?

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

How many days does it rain in September?

In September, the rain falls for 12.1 days. Throughout September, 1.61" (41mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September in Windsor?

The average day length in September in Windsor is 12h and 26min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:34 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:49 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.9h.

How high is the UV index in September?

In Windsor, Pennsylvania, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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
Windsor, PA

Average temperature in September - Windsor, PA
  • Average high temperature in September: 75°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 (35.8°F).

  • Average low temperature in September: 57.2°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in September
Windsor, PA

Average pressure in September - Windsor, PA
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Windsor, PA

Average wind speed in September - Windsor, PA
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in September
Windsor, PA

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

The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are March, April and November (76%).

Average rainfall in September
Windsor, PA

Average rainfall in September - Windsor, PA
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is February (1.26").

Average rainfall days in September
Windsor, PA

Average rainfall days in September - Windsor, PA
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in September
Windsor, PA

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

The month with the highest snowfall is March (3.23").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Windsor, PA

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

The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Windsor, 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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in September
Windsor, PA

Average sunshine days in September - Windsor, PA
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is January (20.4 days).
The month with the least sunshine days is May (11.7 days).

Average UV index in September
Windsor, PA

Average UV index in September - Windsor, PA
  • Average UV index in September: 4

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Windsor, PA

Average cloud cover in September - Windsor, PA
  • Average cloud cover in September: 37

The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in September
Windsor, PA

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

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

Windsor, Pennsylvania, USA

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