September weather forecast
Fort Washington, PA

Share

Weather in September

September, the first month of the autumn in Fort Washington, is also a moderately hot month, with an average temperature ranging between max 76.1°F (24.5°C) and min 59.9°F (15.5°C).

Temperature

A subtle shift in Fort Washington's weather is observed as August turns into September, with the average high temperature reducing from a warm 83.3°F (28.5°C) to a still moderately hot 76.1°F (24.5°C). During September, Fort Washington witnesses a consistent average low-temperature of 59.9°F (15.5°C).

Humidity

In Fort Washington, the average relative humidity in September is 75%.

Rainfall

The month with the least rainfall is September, when the rain falls for 10.1 days and typically collects 0.75" (19mm) of precipitation.

Snowfall

In Fort Washington, snow does not fall in May through October.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:29 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:44 pm EDT.

Sunshine

The average sunshine in September is 8.8h.

UV index

In September, the average daily maximum UV index in Fort Washington is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: The UV index of 5 in September translates into these instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.

Frequently asked questions

What is the usual temperature for Fort Washington in September?

The high-temperature, in September, in Fort Washington, is 76.1°F (24.5°C), while the low-temperature averages to 59.9°F (15.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is computed to be 89.6°F (32°C).

What is the average humidity in September?

The average relative humidity in September is 75%.

What is the driest month?

The month with the least rainfall in Fort Washington is September, when the rain falls for 10.1 days and typically collects 0.75" (19mm) of precipitation.

How many days does it rain in September?

In Fort Washington, in September, it is raining for 10.1 days, with typically 0.75" (19mm) of accumulated precipitation.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Fort Washington have in September?

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

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:29 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:44 pm EDT.

How many hours of sunshine does Fort Washington have in September?

In September, the average sunshine duration is 8.8h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
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
Fort Washington, PA

Average temperature in September - Fort Washington, PA
  • Average high temperature in September: 76.1°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in September: 59.9°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

Average pressure in September
Fort Washington, PA

Average pressure in September - Fort Washington, 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 (29.94"Hg).

Average wind speed in September
Fort Washington, PA

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

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in September
Fort Washington, PA

Average humidity in September - Fort Washington, PA
  • Average humidity in September: 75%

The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April, July and August (72%).

Average rainfall in September
Fort Washington, PA

Average rainfall in September - Fort Washington, PA
  • Average rainfall in September: 0.75"

The wettest month (with the highest rainfall) is August (1.54").
The driest month (with the least rainfall) is September (0.75").

Average rainfall days in September
Fort Washington, PA

Average rainfall days in September - Fort Washington, PA
  • Average rainfall days in September: 10.1 days

The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is November (6.4 days).

Average snowfall in September
Fort Washington, PA

Average snowfall in September - Fort Washington, PA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Fort Washington, PA

Average snowfall days in September - Fort Washington, PA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (5.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Fort Washington, PA

Average daylight in September / Average sunshine in September - Fort Washington, 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 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in September
Fort Washington, PA

Average sunshine days in September - Fort Washington, PA
  • Average sunshine days in September: 18.5 days

The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is May (14.4 days).

Average UV index in September
Fort Washington, PA

Average UV index in September - Fort Washington, 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
Fort Washington, PA

Average cloud cover in September - Fort Washington, PA
  • Average cloud cover in September: 38

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

Average visibility in September
Fort Washington, PA

Average visibility in September - Fort Washington, 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).

Fort Washington, Pennsylvania, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location