September weather forecast
Hanover, MD

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Weather in September

The first month of the autumn, September, is still a warm month in Hanover, Maryland, with temperature in the range of an average high of 77.2°F (25.1°C) and an average low of 62.2°F (16.8°C).

Temperature

September indicates a minor shift in the average high-temperature, from August's moderately hot 83.8°F (28.8°C) to a still warm 77.2°F (25.1°C). Throughout September, Hanover witnesses a consistent average low-temperature of 62.2°F (16.8°C).

Humidity

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

Rainfall

In Hanover, in September, it is raining for 13.1 days, with typically 2.09" (53mm) of accumulated precipitation. In Hanover, during the entire year, the rain falls for 156.3 days and collects up to 29.61" (752mm) of precipitation.

Snowfall

In Hanover, snow does not fall in April through October.

Daylight

In Hanover, the average length of the day in September is 12h and 26min.
On the first day of September, 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.

Sunshine

The average sunshine in September is 9.3h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: In September, an average UV index of 5 transforms into the following instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

Frequently asked questions

What are September temperatures?

In Hanover, in September, the average high-temperature is 77.2°F (25.1°C), and the average low-temperature is 62.2°F (16.8°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is estimated at 91.4°F (33°C).

What is the average humidity in September?

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

How much does it rain in September?

In Hanover, during September, the rain falls for 13.1 days and regularly aggregates up to 2.09" (53mm) of precipitation.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Hanover have in September?

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

When is the sunrise / sunset in September in Hanover?

In September, on the first day of the month, 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 many hours of sunshine does Hanover have in September?

The average sunshine duration in September is 9.3h.

How high is the UV index in September?

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents 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
Hanover, MD

Average temperature in September - Hanover, MD
  • Average high temperature in September: 77.2°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 (38.8°F).

  • Average low temperature in September: 62.2°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

Average pressure in September
Hanover, MD

Average pressure in September - Hanover, 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).

Average wind speed in September
Hanover, MD

Average wind speed in September - Hanover, MD
  • Average wind speed in September: 6.5mph

The windiest months (with the highest average wind speed) are February and March (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in September
Hanover, MD

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

The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are April and July (72%).

Average rainfall in September
Hanover, MD

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

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (1.77").

Average rainfall days in September
Hanover, MD

Average rainfall days in September - Hanover, MD
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (8.6 days).

Average snowfall in September
Hanover, MD

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

The month with the highest snowfall is January (2.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Hanover, MD

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

The month with the highest number of snowfall days is February (3.9 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
Hanover, MD

Average daylight in September / Average sunshine in September - Hanover, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

Average sunshine days in September
Hanover, MD

Average sunshine days in September - Hanover, MD
  • Average sunshine days in September: 14.7 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (10.9 days).

Average UV index in September
Hanover, MD

Average UV index in September - Hanover, 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).

Average cloud cover in September
Hanover, MD

Average cloud cover in September - Hanover, MD
  • Average cloud cover in September: 34

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in September
Hanover, MD

Average visibility in September - Hanover, 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).

Hanover, Maryland, USA

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