September weather forecast
Oak Forest, MD

Share

Weather in September

September, the first month of the autumn in Oak Forest, is still a warm month, with temperature in the range of an average low of 60.4°F (15.8°C) and an average high of 76.8°F (24.9°C).

Temperature

In the transition to September, Oak Forest observes a minor drop in the average high-temperature, shifting from 83.5°F (28.6°C) in August to a still moderately hot 76.8°F (24.9°C). Throughout September, Oak Forest experiences a low-temperature average of 60.4°F (15.8°C).

Humidity

In Oak Forest, the average relative humidity in September is 75%.

Rainfall

In September, in Oak Forest, the rain falls for 13.1 days. Throughout September, 2.17" (55mm) of precipitation is accumulated. Throughout the year, in Oak Forest, there are 165.5 rainfall days, and 31.65" (804mm) of precipitation is accumulated.

Snowfall

In Oak Forest, snow does not fall in May through October.

Daylight

In September, the average length of the day in Oak Forest, Maryland, is 12h and 26min.
On the first day of the month, sunrise is at 6:36 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:50 pm EDT.

Sunshine

The average sunshine in September in Oak Forest, Maryland, is 9.1h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 5 in September translates into this advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
[Resources]

Frequently asked questions

What are September temperatures in Oak Forest?

In Oak Forest, in September, the average high-temperature is 76.8°F (24.9°C), and the average low-temperature is 60.4°F (15.8°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 89.6°F (32°C).

What is the average humidity in September in Oak Forest?

In September, the average relative humidity in Oak Forest is 75%.

How many days does it rain in September in Oak Forest?

In September, in Oak Forest, the rain falls for 13.1 days. Throughout September, 2.17" (55mm) of precipitation is accumulated.

When it does not snow in Oak Forest?

In Oak Forest, snow does not fall in May through October.

How many hours of daylight does Oak Forest have in September?

In Oak Forest, the average day length in September is 12h and 26min.

When is the sunrise / sunset in September in Oak Forest?

On the first day of September in Oak Forest, sunrise is at 6:36 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:50 pm EDT.

How long on average sun shines in September in Oak Forest?

The average sunshine duration in September in Oak Forest, Maryland, is 9.1h.

How high is the UV index in September in Oak Forest?

In September, the average daily maximum UV index in Oak Forest is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Oak Forest, MD

Average temperature in September - Oak Forest, MD
  • Average high temperature in September: 76.8°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in September: 60.4°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

[Resources]

Average pressure in September
Oak Forest, MD

Average pressure in September - Oak Forest, MD
  • Average pressure in September: 30.05"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).

[Resources]

Average wind speed in September
Oak Forest, MD

Average wind speed in September - Oak Forest, MD
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

[Resources]

Average humidity in September
Oak Forest, MD

Average humidity in September - Oak Forest, MD
  • Average humidity in September: 75%

The months with the highest relative humidity are May and October (77%).
The month with the lowest relative humidity is July (71%).

[Resources]

Average rainfall in September
Oak Forest, MD

Average rainfall in September - Oak Forest, MD
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is August (3.74").
The driest month (with the least rainfall) is January (2.05").

[Resources]

Average rainfall days in September
Oak Forest, MD

Average rainfall days in September - Oak Forest, MD
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (9.7 days).

[Resources]

Average snowfall in September
Oak Forest, MD

Average snowfall in September - Oak Forest, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").

[Resources]

Average snowfall days in September
Oak Forest, MD

Average snowfall days in September - Oak Forest, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Oak Forest, MD

Average daylight in September / Average sunshine in September - Oak Forest, MD
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

[Resources]

Average sunshine days in September
Oak Forest, MD

Average sunshine days in September - Oak Forest, MD
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.4 days).

[Resources]

Average UV index in September
Oak Forest, MD

Average UV index in September - Oak Forest, MD
  • 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, November and December (UV index 2).

[Resources]

Average cloud cover in September
Oak Forest, MD

Average cloud cover in September - Oak Forest, MD
  • Average cloud cover in September: 35

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

[Resources]

Average visibility in September
Oak Forest, MD

Average visibility in September - Oak Forest, MD
  • Average visibility in September: 6mi

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

[Resources]

Oak Forest, Maryland, USA

Weather forecast for your location

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