September weather forecastStanwood, PA

September

Weather in September

The first month of the autumn, September, is still a warm month in Stanwood, Pennsylvania, with an average temperature varying between 77°F (25°C) and 60.3°F (15.7°C).

Temperature

A subtle shift in Stanwood's weather is observed as August turns into September, with the average high temperature reducing from a warm 84.2°F (29°C) to a still moderately hot 77°F (25°C). Throughout the nights in September, Stanwood experiences an average low-temperature of 60.3°F (15.7°C).

Humidity

In September, the average relative humidity in Stanwood, Pennsylvania, is 74%.

Rainfall

In September, in Stanwood, the rain falls for 12.8 days. Throughout September, 2.01" (51mm) of precipitation is accumulated. Throughout the year, in Stanwood, there are 153.8 rainfall days, and 30.94" (786mm) of precipitation is accumulated.

Snowfall

In Stanwood, Pennsylvania, snow does not fall in June through October.

Daylight

The average length of the day in September in Stanwood is 12h and 26min.
On the first day of the month, sunrise is at 6:28 am and sunset at 7:30 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:43 pm EDT.

Sunshine

In Stanwood, Pennsylvania, the average sunshine in September is 8.6h.

UV index

In Stanwood, Pennsylvania, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Stanwood, in September, the average high-temperature is 77°F (25°C), and the average low-temperature is 60.3°F (15.7°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in August is evaluated at 91.4°F (33°C).

The average relative humidity in September in Stanwood is 74%.

In Stanwood, during September, the rain falls for 12.8 days and regularly aggregates up to 2.01" (51mm) of precipitation.

In Stanwood, Pennsylvania, snow does not fall in June through October.

In Stanwood, Pennsylvania, the average day length in September is 12h and 26min.

In September, on the first day of the month, sunrise is at 6:28 am and sunset at 7:30 pm. On the last day of the month, in Stanwood, sunrise is at 6:55 am and sunset at 6:43 pm EDT.

The average sunshine duration in September is 8.6h.

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Stanwood, PA

  • Average high temperature in September: 77°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in September: 60.3°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure in September
Stanwood, PA

  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Stanwood, PA

  • Average wind speed in September: 6mph

The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in September
Stanwood, PA

  • Average humidity in September: 74%

The months with the highest relative humidity are February and October (77%).
The months with the lowest relative humidity are April, July and August (71%).

Average rainfall in September
Stanwood, PA

  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is January (1.89").

Average rainfall days in September
Stanwood, PA

  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is November (7.5 days).

Average snowfall in September
Stanwood, PA

  • Average snowfall in September: 0"

The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in September
Stanwood, PA

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

  • Average daylight in September: 12h and 24min

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 36min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in September
Stanwood, PA

  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (10.4 days).

Average UV index in September
Stanwood, PA

  • Average UV index in September: 5

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, March, November and December (UV index 2).

Average cloud cover in September
Stanwood, PA

  • Average cloud cover in September: 39

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in September
Stanwood, 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).