September weather forecast
Hagerstown, MD

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Bright pink blossoms of flowers, clean paths, a bridge, and scenic trees in the neat lawns of a city park in Hagerstown, Maryland
Bright pink blossoms of flowers, clean paths, a bridge, and scenic trees in the neat lawns of a city park in Hagerstown, Maryland

Weather in September

September brings a more perceptible transition towards fall in Hagerstown, with temperatures cooling down from previous months. The decreasing sunshine hours make room for longer evenings. Picturesque landscapes begin to take over, starring the first fall colors. The number of rainfall days decreases further, promising more clear days. As leaves start to turn, September days offer a visual delight befitting the town's scenic charm.

Temperature

September is marked by a subtle drop in average high-temperatures, transitioning from 82.2°F (27.9°C) in August to a still warm 75.6°F (24.2°C). Hagerstown registers a consistent average low-temperature of 55.8°F (13.2°C) during September.

Humidity

The average relative humidity in September is 78%.

Rainfall

In September, the rain falls for 14.2 days. Throughout September, 2.09" (53mm) of precipitation is accumulated. In Hagerstown, during the entire year, the rain falls for 164.7 days and collects up to 29.17" (741mm) of precipitation.

Snowfall

In Hagerstown, snow does not fall in May through September.

Daylight

In Hagerstown, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:39 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:54 pm EDT.

Sunshine

The average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the maximum UV index of 4 translates into these guidelines:
Be vigilant - Preventing sunburn is recommended. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.

Frequently asked questions

What is the average September temperature?

The high-temperature during September is 75.6°F (24.2°C) and the low-temperature is 55.8°F (13.2°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is appraised at 87.8°F (31°C).

What is the average humidity in September?

In September, the average relative humidity is 78%.

How much does it rain in Hagerstown in September?

In Hagerstown, during September, the rain falls for 14.2 days and regularly aggregates up to 2.09" (53mm) of precipitation.

When it does not snow?

In Hagerstown, snow does not fall in May through September.

Does it snow in September?

In Hagerstown, Maryland, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Hagerstown have in September?

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

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:39 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:54 pm EDT.

How many hours of sunshine does Hagerstown have in September?

In September, the average sunshine duration is 8.8h.

How high is the UV index in September?

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's 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
Hagerstown, MD

Average temperature in September - Hagerstown, MD
  • Average high temperature in September: 75.6°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in September: 55.8°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

Average pressure in September
Hagerstown, MD

Average pressure in September - Hagerstown, MD
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in September
Hagerstown, MD

Average wind speed in September - Hagerstown, MD
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in September
Hagerstown, MD

Average humidity in September - Hagerstown, MD
  • Average humidity in September: 78%

The months with the highest relative humidity are May and October (79%).
The months with the lowest relative humidity are April and July (75%).

Average rainfall in September
Hagerstown, MD

Average rainfall in September - Hagerstown, MD
  • Average rainfall in September: 2.09"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (1.97").

Average rainfall days in September
Hagerstown, MD

Average rainfall days in September - Hagerstown, MD
  • Average rainfall days in September: 14.2 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in September
Hagerstown, MD

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

The month with the highest snowfall is January (4.21").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Hagerstown, MD

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

The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Hagerstown, 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 24min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in September
Hagerstown, MD

Average sunshine days in September - Hagerstown, MD
  • Average sunshine days in September: 13.9 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.7 days).

Average UV index in September
Hagerstown, MD

Average UV index in September - Hagerstown, MD
  • Average UV index in September: 4

The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Hagerstown, MD

Average cloud cover in September - Hagerstown, MD
  • Average cloud cover in September: 38

The months with the most cloud cover are January, February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in September
Hagerstown, MD

Average visibility in September - Hagerstown, MD
  • Average visibility in September: 5mi

The months with the highest visibility are April, June, July, August, November and December (6mi).
The months with the lowest visibility are January, February, March, May, September and October (5mi).

Hagerstown, Maryland, USA

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