Harrisburg
Pennsylvania, USA
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Harrisburg, PA

A church, a mosque, and other buildings along State Street in Harrisburg, Pennsylvania
A church, a mosque, and other buildings along State Street in Harrisburg, Pennsylvania
October, like September, in Harrisburg, Pennsylvania, is another comfortable autumn month, with average temperature ranging between max 62.8°F (17.1°C) and min 46°F (7.8°C).

Temperature

In Harrisburg, Pennsylvania, the average high-temperature decreases, from a moderately hot 74.3°F (23.5°C) in September, to a comfortable 62.8°F (17.1°C). The average low-temperature, in October, is 46°F (7.8°C).

Humidity

In October, the average relative humidity in Harrisburg, Pennsylvania, is 79%.

Rainfall

In Harrisburg, in October, during 9.7 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. In Harrisburg, during the entire year, the rain falls for 122.3 days and collects up to 11.73" (298mm) of precipitation.

Snowfall

In Harrisburg snow does not fall in May through October.

Daylight

The average length of the day in Harrisburg is 11.1h.

Sunshine

The average sunshine in October is 5.4h.

UV index

In October, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.

What is the temperature in October in Harrisburg?

The average high-temperature, in October, is 62.8°F (17.1°C), while the average low-temperature is 46°F (7.8°C).

What is the average humidity in October in Harrisburg?

The average relative humidity in October in Harrisburg, Pennsylvania, is 79%.

How much does it rain in Harrisburg in October?

In Harrisburg, Pennsylvania, in October, during 9.7 rainfall days, 1.06" (27mm) of precipitation is typically accumulated.

Does it snow in Harrisburg in October?

In Harrisburg, Pennsylvania, in October, it doesn't snow. In November, it regularly snows.

When it does not snow in Harrisburg?

May through October are months without snowfall.

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

The average length of the day in October is 11.1h.

How many hours of sunshine does Harrisburg have in October?

The average sunshine in October in Harrisburg, Pennsylvania, is 5.4h.

What is the UV index intensity in October in Harrisburg?

The average daily maximum UV index in October in Harrisburg is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.
Average temperature in October - Harrisburg, PA
  • Average high temperature in October: 17.1°C

The warmest month (with the highest average high temperature) is July (28.8°C).
The month with the lowest average high temperature is January (1.7°C).

  • Average low temperature in October: 7.8°C

The month with the highest average low temperature is July (17.5°C).
The coldest month (with the lowest average low temperature) is January (-5.5°C).

Average humidity in October - Harrisburg, PA
  • Average humidity in October: 79%

The month with the highest relative humidity is February (80%).
Months with the lowest relative humidity are March and April (75%).

Average rainfall in October - Harrisburg, PA
  • Average rainfall in October: 27mm

The wettest month (with the highest rainfall) is August (33mm).
Driest months (with the lowest rainfall) are January and February (18mm).

Average rainfall days in October - Harrisburg, PA
  • Average rainfall days in October: 9.7 days

The month with the highest number of rainy days is May (13.9 days).
The month with the lowest number of rainy days is January (5.7 days).

Average snowfall in October - Harrisburg, PA
  • Average snowfall in October: 0mm

The month with the highest snowfall is February (33mm).
Months with the lowest snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in October - Harrisburg, PA
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is January (6.3 days).
Months with the lowest number of snowfall days are June, July, August, September and October (0 days).

Average daylight in October / Average sunshine in October - Harrisburg, PA
  • Average daylight in October: 11.1h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).

  • Average sunshine in October: 5.4h

The month with most sunshine is July (Average sunshine: 10.5h).
The month with least sunshine is February (Average sunshine: 4.5h).

Average UV index in October - Harrisburg, PA
  • Average UV index in October: 3

Months with the highest UV index are May, June and July (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).