September weather forecast
Reisterstown, MD

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Weather in September

The first month of the autumn, September, is still a warm month in Reisterstown, Maryland, with an average temperature fluctuating between 75.9°F (24.4°C) and 58.8°F (14.9°C).

Temperature

The average high-temperature shows a slight dip in September, from August's moderately hot 82.4°F (28°C) to a still warm 75.9°F (24.4°C). Reisterstown anticipates an average minimum temperature of 58.8°F (14.9°C) in the month of September.

Humidity

In September, the average relative humidity is 78%.

Rainfall

In Reisterstown, Maryland, in September, it is raining for 13.7 days, with typically 2.24" (57mm) of accumulated precipitation. In Reisterstown, during the entire year, the rain falls for 158.9 days and collects up to 31.38" (797mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In September, the average length of the day 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 7:03 am and sunset at 6:50 pm EDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.

Frequently asked questions

What is the temperature in September?

In Reisterstown, 75.9°F (24.4°C) is the average high-temperature and 58.8°F (14.9°C) is the average low-temperature during September. In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 89.6°F (32°C).

What is the average humidity in September?

In September, the average relative humidity is 78%.

How much does it rain in September?

In Reisterstown, during September, the rain falls for 13.7 days and regularly aggregates up to 2.24" (57mm) of precipitation.

When it does not snow?

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

Does it snow in September?

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

How many hours of daylight does Reisterstown have in September?

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

When is the sunrise / sunset in September?

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 7:03 am and sunset at 6:50 pm EDT.

How long on average sun shines in September?

In Reisterstown, the average sunshine duration in September is 8.9h.

How high is the UV index in September in Reisterstown?

The average daily maximum UV index in September in Reisterstown is 4. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Reisterstown, MD

Average temperature in September - Reisterstown, MD
  • Average high temperature in September: 75.9°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in September: 58.8°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in September
Reisterstown, MD

Average pressure in September - Reisterstown, 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 (29.94"Hg).

Average wind speed in September
Reisterstown, MD

Average wind speed in September - Reisterstown, MD
  • Average wind speed in September: 6mph

The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

Average humidity in September
Reisterstown, MD

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

The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, March, April, July and November (75%).

Average rainfall in September
Reisterstown, MD

Average rainfall in September - Reisterstown, MD
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is February (1.89").

Average rainfall days in September
Reisterstown, MD

Average rainfall days in September - Reisterstown, MD
  • Average rainfall days in September: 13.7 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in September
Reisterstown, MD

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

The month with the highest snowfall is March (3.46").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Reisterstown, MD

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

The month with the highest number of snowfall days is January (6.6 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
Reisterstown, MD

Average daylight in September / Average sunshine in September - Reisterstown, 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
Reisterstown, MD

Average sunshine days in September - Reisterstown, MD
  • Average sunshine days in September: 15.4 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11.2 days).

Average UV index in September
Reisterstown, MD

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

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
Reisterstown, MD

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

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in September
Reisterstown, MD

Average visibility in September - Reisterstown, MD
  • 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).

Reisterstown, Maryland, USA

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