September weather forecast
Galesville, MD

Share

Weather in September

September, the first month of the autumn in Galesville, is still a warm month, with an average temperature fluctuating between 64.9°F (18.3°C) and 76.8°F (24.9°C).

Temperature

The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from 82.9°F (28.3°C) in August to a still moderately hot 76.8°F (24.9°C). Galesville's average low-temperature in the month of September is recorded at an enjoyable 64.9°F (18.3°C).

Humidity

The average relative humidity in September is 75%.

Rainfall

In Galesville, during September, the rain falls for 10.9 days and regularly aggregates up to 0.83" (21mm) of precipitation. Throughout the year, in Galesville, there are 127.2 rainfall days, and 11.85" (301mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In Galesville, Maryland, the average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:35 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:50 pm EDT.

Sunshine

The average sunshine in September is 9.2h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 5 during September translates into the following directions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.

Frequently asked questions

What is the temperature in September?

Galesville in September has an average high-temperature of 76.8°F (24.9°C) and an average low-temperature of 64.9°F (18.3°C). The average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 89.6°F (32°C).

What is the average humidity in September?

In September, the average relative humidity is 75%.

How much does it rain in September?

In Galesville, during September, the rain falls for 10.9 days and regularly aggregates up to 0.83" (21mm) of precipitation.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in September?

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

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:35 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:50 pm EDT.

How many hours of sunshine does Galesville have in September?

In September, the average sunshine duration is 9.2h.

How high is the UV index in September?

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Galesville, MD

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

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (40.5°F).

  • Average low temperature in September: 64.9°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (30°F).

Average pressure in September
Galesville, MD

Average pressure in September - Galesville, MD
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Galesville, MD

Average wind speed in September - Galesville, MD
  • Average wind speed in September: 7.5mph

The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

Average humidity in September
Galesville, MD

Average humidity in September - Galesville, MD
  • Average humidity in September: 75%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January and November (72%).

Average rainfall in September
Galesville, MD

Average rainfall in September - Galesville, MD
  • Average rainfall in September: 0.83"

The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.51").

Average rainfall days in September
Galesville, MD

Average rainfall days in September - Galesville, MD
  • Average rainfall days in September: 10.9 days

The month with the highest number of rainy days is August (15.6 days).
The month with the least rainy days is November (5.9 days).

Average snowfall in September
Galesville, MD

Average snowfall in September - Galesville, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Galesville, MD

Average snowfall days in September - Galesville, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Galesville, MD

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

The month with the longest days is June (Average daylight: 14h and 48min).
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 54min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).

Average sunshine days in September
Galesville, MD

Average sunshine days in September - Galesville, MD
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is November (22.6 days).
The month with the least sunshine days is August (12.5 days).

Average UV index in September
Galesville, MD

Average UV index in September - Galesville, 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 and December (UV index 2).

Average cloud cover in September
Galesville, MD

Average cloud cover in September - Galesville, MD
  • Average cloud cover in September: 33

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in September
Galesville, MD

Average visibility in September - Galesville, 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).

Galesville, Maryland, USA

Weather forecast for your location

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