October weather forecast
Riverdale Heights, MD

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Weather in October

October, like September, in Riverdale Heights, Maryland, is another comfortable autumn month, with temperature in the range of an average low of 51.8°F (11°C) and an average high of 66.2°F (19°C).

Temperature

The shift from September to October corresponds with a decrease in the average high-temperature, down to a comfortable 66.2°F (19°C) from a warm 78.1°F (25.6°C). Riverdale Heights's nighttime temperature in October falls to an average of 51.8°F (11°C).

Humidity

May, October and December, with an average relative humidity of 76%, are the most humid months.

Rainfall

In October, the rain falls for 11.8 days. Throughout October, 2.64" (67mm) of precipitation is accumulated. Throughout the year, there are 157.9 rainfall days, and 31.14" (791mm) of precipitation is accumulated.

Snowfall

In Riverdale Heights, snow does not fall in May through November.

Daylight

In Riverdale Heights, the average length of the day in October is 11h and 10min.
On the first day of the month, sunrise is at 7:04 am and sunset at 6:49 pm. On the last day of October, in Riverdale Heights, sunrise is at 7:34 am and sunset at 6:07 pm EDT.

Sunshine

In October, the average sunshine in Riverdale Heights is 5.6h.

UV index

In Riverdale Heights, the average daily maximum UV index in October is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: A maximum high UV index of 4 in October translates into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Avoiding the Sun during its peak radiation time around midday is a healthy practice. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
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Frequently asked questions

What is the usual temperature for Riverdale Heights in October?

October temperatures in Riverdale Heights, Maryland, vary between a high-temperature of 66.2°F (19°C) and a low-temperature of 51.8°F (11°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 93.2°F (34°C).

What is the most humid month in Riverdale Heights?

May, October and December, with an average relative humidity of 76%, are most humid months in Riverdale Heights, Maryland.

What is the average humidity in October in Riverdale Heights?

In October, the average relative humidity in Riverdale Heights, Maryland, is 76%.

How many days does it rain in October in Riverdale Heights?

In Riverdale Heights, Maryland, in October, it is raining for 11.8 days, with typically 2.64" (67mm) of accumulated precipitation.

When it does not snow in Riverdale Heights?

May through November are months without snowfall in Riverdale Heights, Maryland.

What is the average length of the day in October in Riverdale Heights?

In October, the average day length is 11h and 10min.

When are sunrise and sunset in October in Riverdale Heights?

In October, on the first day of the month, sunrise is at 7:04 am and sunset at 6:49 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 6:07 pm EDT.

How long on average sun shines in October in Riverdale Heights?

In October, the average sunshine duration in Riverdale Heights is 5.6h.

What is the UV index reading in October in Riverdale Heights?

In Riverdale Heights, Maryland, the average daily maximum UV index in October is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe 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 October
Riverdale Heights, MD

Average temperature in October - Riverdale Heights, MD
  • Average high temperature in October: 66.2°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in October: 51.8°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

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Average pressure in October
Riverdale Heights, MD

Average pressure in October - Riverdale Heights, MD
  • Average pressure in October: 30.04"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).

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Average wind speed in October
Riverdale Heights, MD

Average wind speed in October - Riverdale Heights, MD
  • Average wind speed in October: 6.9mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in October
Riverdale Heights, MD

Average humidity in October - Riverdale Heights, MD
  • Average humidity in October: 76%

The months with the highest relative humidity are May, October and December (76%).
The months with the lowest relative humidity are April and July (71%).

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Average rainfall in October
Riverdale Heights, MD

Average rainfall in October - Riverdale Heights, MD
  • Average rainfall in October: 2.64"

The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is January (2.01").

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Average rainfall days in October
Riverdale Heights, MD

Average rainfall days in October - Riverdale Heights, MD
  • Average rainfall days in October: 11.8 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is November (9 days).

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Average snowfall in October
Riverdale Heights, MD

Average snowfall in October - Riverdale Heights, MD
  • Average snowfall in October: 0"

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

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Average snowfall days in October
Riverdale Heights, MD

Average snowfall days in October - Riverdale Heights, MD
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is January (4.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in October /
Average sunshine in October
Riverdale Heights, MD

Average daylight in October / Average sunshine in October - Riverdale Heights, MD
  • Average daylight in October: 11h and 1min

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 October: 5h and 4min

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 0min).

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Average sunshine days in October
Riverdale Heights, MD

Average sunshine days in October - Riverdale Heights, MD
  • Average sunshine days in October: 17.4 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in October
Riverdale Heights, MD

Average UV index in October - Riverdale Heights, MD
  • Average UV index in October: 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 and December (UV index 2).

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Average cloud cover in October
Riverdale Heights, MD

Average cloud cover in October - Riverdale Heights, MD
  • Average cloud cover in October: 38

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

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Average visibility in October
Riverdale Heights, MD

Average visibility in October - Riverdale Heights, MD
  • Average visibility in October: 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).

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Riverdale Heights, Maryland, USA

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