September weather forecast
Ambler, PA

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Weather in September

September, the first month of the autumn in Ambler, is still a warm month, with an average temperature ranging between min 59.9°F (15.5°C) and max 76.1°F (24.5°C).

Temperature

The onset of September aligns with a soft reduction in the average high-temperature, gently falling from a warm 83.3°F (28.5°C) in August to a still moderately hot 76.1°F (24.5°C). Ambler throughout September, experiences an average nighttime temperature of 59.9°F (15.5°C).

Humidity

The average relative humidity in September is 75%.

Rainfall

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

Snowfall

In Ambler, snow does not fall in May through October.

Daylight

In September, the average length of the day in Ambler is 12h and 26min.
On the first day of the month, sunrise is at 6:29 am and sunset at 7:32 pm. On the last day of September, in Ambler, 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 is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 5 during September translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
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Frequently asked questions

What is the usual temperature for Ambler in September?

September temperatures in Ambler vary between a high-temperature of 76.1°F (24.5°C) and a low-temperature of 59.9°F (15.5°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in August is calculated to be 89.6°F (32°C).

What is the average humidity in September in Ambler?

In September, the average relative humidity in Ambler, Pennsylvania, is 75%.

What is the driest month in Ambler?

The month with the least rainfall 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 Ambler?

In Ambler, in September, during 10.1 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

When it does not snow in Ambler?

In Ambler, snow does not fall in May through October.

How many hours of daylight does Ambler have in September?

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

What time are sunrise and sunset in September in Ambler?

On the first day of September in Ambler, Pennsylvania, sunrise is at 6:29 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:44 pm EDT.

How long on average sun shines in September in Ambler?

In Ambler, the average sunshine duration in September is 8.8h.

What is the UV index reading in September in Ambler?

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Ambler, PA

Average temperature in September - Ambler, 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).

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Average pressure in September
Ambler, PA

Average pressure in September - Ambler, 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).

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Average wind speed in September
Ambler, PA

Average wind speed in September - Ambler, 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).

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Average humidity in September
Ambler, PA

Average humidity in September - Ambler, 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%).

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Average rainfall in September
Ambler, PA

Average rainfall in September - Ambler, 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").

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Average rainfall days in September
Ambler, PA

Average rainfall days in September - Ambler, 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).

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Average snowfall in September
Ambler, PA

Average snowfall in September - Ambler, 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").

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Average snowfall days in September
Ambler, PA

Average snowfall days in September - Ambler, 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).

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

Average daylight in September / Average sunshine in September - Ambler, 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).

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Average sunshine days in September
Ambler, PA

Average sunshine days in September - Ambler, 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).

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Average UV index in September
Ambler, PA

Average UV index in September - Ambler, 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).

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Average cloud cover in September
Ambler, PA

Average cloud cover in September - Ambler, 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).

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Average visibility in September
Ambler, PA

Average visibility in September - Ambler, 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).

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Ambler, Pennsylvania, USA

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