October weather forecast
Mercersville, MD

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Weather in October

October, the same as September, is another enjoyable autumn month in Mercersville, Maryland, with an average temperature varying between 63.9°F (17.7°C) and 46.2°F (7.9°C).

Temperature

October suggests a modest reduction in the average high-temperature, shifting from a moderately hot 76.1°F (24.5°C) in September to a comfortable 63.9°F (17.7°C). Throughout October, the temperature in Mercersville falls to an average low of 46.2°F (7.9°C).

Humidity

May, October and December, with an average relative humidity of 79%, are the most humid months in Mercersville.

Rainfall

In Mercersville, Maryland, during October, the rain falls for 12.8 days and regularly aggregates up to 2.68" (68mm) of precipitation. In Mercersville, during the entire year, the rain falls for 162.4 days and collects up to 30.16" (766mm) of precipitation.

Snowfall

Months with snowfall in Mercersville are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.31" (8mm) of snow. In Mercersville, Maryland, during the entire year, snow falls for 24.4 days and aggregates up to 14.29" (363mm) of snow.

Daylight

In Mercersville, the average length of the day in October is 11h and 9min.
On the first day of the month, sunrise is at 7:07 am and sunset at 6:53 pm. On the last day of October, in Mercersville, sunrise is at 7:38 am and sunset at 6:10 pm EDT.

Sunshine

In October, the average sunshine is 5.5h.

UV index

In October, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: An average UV index of 3 in October transforms into this advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

What is the average October temperature in Mercersville?

Mercersville in October has an average high-temperature of 63.9°F (17.7°C) and an average low-temperature of 46.2°F (7.9°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is estimated at 91.4°F (33°C).

What are the most humid months in Mercersville?

May, October and December, with an average relative humidity of 79%, are most humid months in Mercersville.

What is the average humidity in October in Mercersville?

In October, the average relative humidity in Mercersville, Maryland, is 79%.

How much does it rain in Mercersville in October?

In Mercersville, Maryland, in October, during 12.8 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

When does it start to snow in Mercersville?

October is the first month it typically snows in Mercersville, Maryland. Throughout October, in the average 0.1 snowfall days, it receives 0.31" (8mm) of snow.

How many hours of daylight does Mercersville have in October?

The average day length in October in Mercersville, Maryland, is 11h and 9min.

When are sunrise and sunset in October in Mercersville?

On the first day of October, sunrise is at 7:07 am and sunset at 6:53 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 6:10 pm EDT.

How long on average sun shines in October in Mercersville?

In Mercersville, the average sunshine duration in October is 5.5h.

How high is the UV index in October in Mercersville?

In Mercersville, the average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Mercersville, MD

Average temperature in October - Mercersville, MD
  • Average high temperature in October: 63.9°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 (37°F).

  • Average low temperature in October: 46.2°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

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Average pressure in October
Mercersville, MD

Average pressure in October - Mercersville, 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 (29.95"Hg).

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Average wind speed in October
Mercersville, MD

Average wind speed in October - Mercersville, MD
  • Average wind speed in October: 6.2mph

The windiest months (with the highest average wind speed) are January, February and March (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in October
Mercersville, MD

Average humidity in October - Mercersville, MD
  • Average humidity in October: 79%

The months with the highest relative humidity are May, October and December (79%).
The month with the lowest relative humidity is July (74%).

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Average rainfall in October
Mercersville, MD

Average rainfall in October - Mercersville, MD
  • Average rainfall in October: 2.68"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (1.97").

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Average rainfall days in October
Mercersville, MD

Average rainfall days in October - Mercersville, MD
  • Average rainfall days in October: 12.8 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.4 days).

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Average snowfall in October
Mercersville, MD

Average snowfall in October - Mercersville, MD
  • Average snowfall in October: 0.31"

The month with the highest snowfall is January (4.72").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in October
Mercersville, MD

Average snowfall days in October - Mercersville, MD
  • Average snowfall days in October: 0.1 days

The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Mercersville, MD

Average daylight in October / Average sunshine in October - Mercersville, 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 24min).

  • Average sunshine in October: 5h and 3min

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).

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Average sunshine days in October
Mercersville, MD

Average sunshine days in October - Mercersville, MD
  • Average sunshine days in October: 16.4 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is April (11 days).

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Average UV index in October
Mercersville, MD

Average UV index in October - Mercersville, MD
  • Average UV index in October: 3

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).

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Average cloud cover in October
Mercersville, MD

Average cloud cover in October - Mercersville, MD
  • Average cloud cover in October: 42

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in October
Mercersville, MD

Average visibility in October - Mercersville, MD
  • Average visibility in October: 5mi

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

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Mercersville, Maryland, USA

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