Monthly 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
January, like December, in Harrisburg, Pennsylvania, is a wintry winter month, with average temperature fluctuating between 22.1°F (-5.5°C) and 35.1°F (1.7°C). January is the coldest month, with an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 22.1°F (-5.5°C). Weather in January »

The last month of the winter, February, is another cold month in Harrisburg, Pennsylvania, with average temperature fluctuating between 38.3°F (3.5°C) and 23.9°F (-4.5°C). In February, the average high-temperature is almost the same as in January - a still cold 38.3°F (3.5°C). Weather in February »

March, the first month of the spring, in Harrisburg, is a frosty month, with temperature in the range of an average low of 31.6°F (-0.2°C) and an average high of 47.8°F (8.8°C). In March, the average high-temperature increases, from a cold 38.3°F (3.5°C) in February, to a chilly 47.8°F (8.8°C). Weather in March »

April in Harrisburg, Pennsylvania, is a mild spring month, with average temperature varying between 41.7°F (5.4°C) and 60.1°F (15.6°C). In Harrisburg, the average high-temperature in April increases, from a chilly 47.8°F (8.8°C) in March, to a mild 60.1°F (15.6°C). Weather in April »

The last month of the spring, May, is an agreeable month in Harrisburg, Pennsylvania, with temperature in the range of an average low of 51.4°F (10.8°C) and an average high of 70.3°F (21.3°C). In May, the average high-temperature increases, from a moderate 60.1°F (15.6°C) in April, to a pleasant 70.3°F (21.3°C). Weather in May »

The first month of the summer, June, is a moderately hot month in Harrisburg, Pennsylvania, with average temperature ranging between min 58.6°F (14.8°C) and max 78.1°F (25.6°C). In June, the average high-temperature marginally rises, from a pleasant 70.3°F (21.3°C) in May, to a moderately hot 78.1°F (25.6°C). Weather in June »

July, the same as June, is another warm summer month in Harrisburg, Pennsylvania, with average temperature ranging between max 83.8°F (28.8°C) and min 63.5°F (17.5°C). With an average high-temperature of 83.8°F (28.8°C) and an average low-temperature of 63.5°F (17.5°C), July is the warmest month. In July, the average heat index is appraised at a hot 92.1°F (33.4°C). Weather in July »

The last month of the summer, August, is another warm month in Harrisburg, Pennsylvania, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 61.9°F (16.6°C). In Harrisburg, the average high-temperature is practically the same as in July - a still moderately hot 81.5°F (27.5°C). Weather in August »

The first month of the autumn, September, is still a warm month in Harrisburg, Pennsylvania, with temperature in the range of an average low of 55.6°F (13.1°C) and an average high of 74.3°F (23.5°C). In September, the average high-temperature slightly decreases, from a warm 81.5°F (27.5°C) in August, to a still moderately hot 74.3°F (23.5°C). Weather in September »

October, the same as September, is another comfortable autumn month in Harrisburg, Pennsylvania, with average temperature ranging between max 62.8°F (17.1°C) and min 46°F (7.8°C). In Harrisburg, Pennsylvania, the average high-temperature decreases, from a warm 74.3°F (23.5°C) in September, to a comfortable 62.8°F (17.1°C). Weather in October »

November, the last month of the autumn, in Harrisburg, is also a fresh month, with average temperature ranging between max 50°F (10°C) and min 35.2°F (1.8°C). In November, the average high-temperature drops, from an enjoyable 62.8°F (17.1°C) in October, to a cool 50°F (10°C). Weather in November »

December, the first month of the winter, in Harrisburg, is still a cold month, with average temperature ranging between max 41°F (5°C) and min 29.7°F (-1.3°C). In December, the average high-temperature drops, from a cool 50°F (10°C) in November, to a cold 41°F (5°C). Weather in December »

What is the coldest month in Harrisburg?

The coldest month in Harrisburg is January, with an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 22.1°F (-5.5°C).

How much does it rain in Harrisburg?

In Harrisburg, during the entire year, the rain falls for 122.3 days and collects up to 11.73" (298mm) of precipitation.

What is the driest month in Harrisburg?

January and February are months with the least rain in Harrisburg, Pennsylvania, when the rain falls for 5.7 days and typically aggregates up to 0.71" (18mm) of rain.

When does it snow in Harrisburg?

Months with snowfall in Harrisburg are January through April, November and December.

How much does it snow in Harrisburg?

In Harrisburg, during the entire year, snow falls for 19.9 days, and aggregates up to 4.29" (109mm) of snow.

What are the months with the lowest UV index in Harrisburg?

Months with the lowest UV index in Harrisburg, Pennsylvania, are January through March, November and December, with an average maximum UV index of 2.

What is the most humid month in Harrisburg?

The most humid month in Harrisburg, Pennsylvania, is February, with an average relative humidity of 80%.

When does it snow the most in Harrisburg?

The month with the most snowfall in Harrisburg, Pennsylvania, is February when snow falls for 5.6 days and typically aggregates up to 1.3" (33mm) of snow.

What is the month with the least sunshine in Harrisburg?

February has the least sunshine of the year, with an average of 4.5h of sunshine.

What are the least humid months in Harrisburg?

March and April, with an average relative humidity of 75%, are the least humid months in Harrisburg, Pennsylvania.

When it does not snow in Harrisburg?

May through October are months without snowfall in Harrisburg.

What is the month with the highest UV index in Harrisburg?

Months with the highest UV index in Harrisburg, Pennsylvania, are May through July, with an average maximum UV index of 6.

When are the longest days in Harrisburg?

The month with the longest days in Harrisburg, Pennsylvania, is June, with an average of 15h of daylight.

What is the warmest month in Harrisburg?

July is the warmest month, with an average high-temperature of 83.8°F (28.8°C) and an average low-temperature of 63.5°F (17.5°C).

What month has the most sunshine in Harrisburg?

July has the most sunshine of the year in Harrisburg, Pennsylvania, with an average of 10.5h of sunshine.

What is the wettest month in Harrisburg?

August is the month with the most rainfall in Harrisburg. Rain falls for 12.3 days and accumulates 1.3" (33mm) of precipitation.

What is the month with the shortest days in Harrisburg?

With an average of 9.4h of daylight, December has the shortest days of the year.
Average pressure - Harrisburg, PA

The month with the highest atmospheric pressure is November (1020.4mbar).
The month with the lowest atmospheric pressure is June (1014.1mbar).

Average wind speed - Harrisburg, PA

The windiest month (with the highest average wind speed) is March (13.2km/h).
The calmest month (with the lowest average wind speed) is August (7.7km/h).

Average humidity - Harrisburg, PA
Average rainfall - Harrisburg, PA

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

Average rainfall days - Harrisburg, PA

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

Average snowfall - Harrisburg, PA
Average snowfall days - Harrisburg, PA

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

Average daylight / Average sunshine - Harrisburg, PA

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

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

Average sunshine days - Harrisburg, PA

The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is July (14.1 days).

Average UV index - Harrisburg, PA
Average visibility - Harrisburg, PA

Months with the highest visibility are January, February, March, April, June, July, August, October, November and December (9km).
Months with the lowest visibility are May and September (8km).