October weather forecast
Harmonsburg, PA

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Weather in October

October, like September, is another mild autumn month in Harmonsburg, Pennsylvania, with an average temperature fluctuating between 45.3°F (7.4°C) and 59°F (15°C).

Temperature

Harmonsburg observes a minor decrease in the average high-temperature with the arrival of October, falling from September's pleasant 71.6°F (22°C) to a refreshing 59°F (15°C). An average low-temperature of 45.3°F (7.4°C) is observed during October nights.

Humidity

In October, the average relative humidity in Harmonsburg is 82%.

Rainfall

In October, in Harmonsburg, the rain falls for 17.5 days. Throughout October, 2.44" (62mm) of precipitation is accumulated. Throughout the year, in Harmonsburg, there are 167.5 rainfall days, and 24.29" (617mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Harmonsburg are January through May, October through December. October is the first month it typically snows in Harmonsburg, Pennsylvania. Throughout October, in the average 0.7 snowfall days, it receives 0.24" (6mm) of snow. Throughout the year, there are 79.8 snowfall days, and 25.39" (645mm) of snow is accumulated.

Daylight

The average length of the day in October in Harmonsburg is 11h and 4min.
On the first day of the month, sunrise is at 7:18 am and sunset at 7:02 pm. On the last day of October, in Harmonsburg, sunrise is at 7:52 am and sunset at 6:16 pm EDT.

Sunshine

In Harmonsburg, Pennsylvania, the average sunshine in October is 4.8h.

UV index

In October, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum UV index of 2 in October translates into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

What is the average October temperature in Harmonsburg?

Harmonsburg in October has an average high-temperature of 59°F (15°C) and an average low-temperature of 45.3°F (7.4°C).

What is the average humidity in October in Harmonsburg?

The average relative humidity in October in Harmonsburg, Pennsylvania, is 82%.

How many days does it rain in October in Harmonsburg?

In Harmonsburg, Pennsylvania, during October, the rain falls for 17.5 days and regularly aggregates up to 2.44" (62mm) of precipitation.

When does it start snowing in Harmonsburg?

October is the first month it typically snows in Harmonsburg, Pennsylvania. Throughout October, in the average 0.7 snowfall days, it receives 0.24" (6mm) of snow.

What is the average length of the day in October in Harmonsburg?

In October, the average day length in Harmonsburg is 11h and 4min.

What time are sunrise and sunset in October in Harmonsburg?

In October, on the first day of the month, sunrise is at 7:18 am and sunset at 7:02 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 6:16 pm EDT.

How long on average sun shines in October in Harmonsburg?

In October, the average sunshine duration in Harmonsburg, Pennsylvania, is 4.8h.

What is the UV index intensity in October in Harmonsburg?

In October, the average daily maximum UV index in Harmonsburg, Pennsylvania, is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.
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
Harmonsburg, PA

Average temperature in October - Harmonsburg, PA
  • Average high temperature in October: 59°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (30.4°F).

  • Average low temperature in October: 45.3°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in October
Harmonsburg, PA

Average pressure in October - Harmonsburg, PA
  • Average pressure in October: 30.02"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in October
Harmonsburg, PA

Average wind speed in October - Harmonsburg, PA
  • Average wind speed in October: 7.8mph

The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

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Average humidity in October
Harmonsburg, PA

Average humidity in October - Harmonsburg, PA
  • Average humidity in October: 82%

The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are April, May, June, July and August (80%).

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Average rainfall in October
Harmonsburg, PA

Average rainfall in October - Harmonsburg, PA
  • Average rainfall in October: 2.44"

The wettest month (with the highest rainfall) is June (2.72").
The driest month (with the least rainfall) is November (1.42").

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Average rainfall days in October
Harmonsburg, PA

Average rainfall days in October - Harmonsburg, PA
  • Average rainfall days in October: 17.5 days

The month with the highest number of rainy days is October (17.5 days).
The month with the least rainy days is January (7.6 days).

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Average snowfall in October
Harmonsburg, PA

Average snowfall in October - Harmonsburg, PA
  • Average snowfall in October: 0.24"

The month with the highest snowfall is January (6.42").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in October
Harmonsburg, PA

Average snowfall days in October - Harmonsburg, PA
  • Average snowfall days in October: 0.7 days

The month with the highest number of snowfall days is January (20.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Harmonsburg, PA

Average daylight in October / Average sunshine in October - Harmonsburg, PA
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in October: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).

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Average sunshine days in October
Harmonsburg, PA

Average sunshine days in October - Harmonsburg, PA
  • Average sunshine days in October: 10.6 days

The month with the most sunshine days is July (12.5 days).
The month with the least sunshine days is February (6.7 days).

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Average UV index in October
Harmonsburg, PA

Average UV index in October - Harmonsburg, PA
  • Average UV index in October: 2

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in October
Harmonsburg, PA

Average cloud cover in October - Harmonsburg, PA
  • Average cloud cover in October: 49

The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are July and August (Cloud cover 32).

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Average visibility in October
Harmonsburg, PA

Average visibility in October - Harmonsburg, PA
  • Average visibility in October: 6mi

The months with the highest visibility are April, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

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Harmonsburg, Pennsylvania, USA

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