Climate and monthly weather forecast
Harkness, PA

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Weather in January

January, the same as December, in Harkness, Pennsylvania, is another subzero cold winter month, with an average temperature varying between 17.8°F (-7.9°C) and 29.3°F (-1.5°C). Harkness, Pennsylvania, reaches its lowest average temperatures in January, measuring 29.3°F (-1.5°C) at the peak and 17.8°F (-7.9°C) at the lowest. Weather in January »

Weather in February

February, the last month of the winter in Harkness, is a cold month, with an average temperature fluctuating between 32.7°F (0.4°C) and 19.8°F (-6.8°C). Harkness's transition from January to February introduces an average high-temperature of an icy 32.7°F (0.4°C), marking an insignificant variation from the 29.3°F (-1.5°C). Weather in February »

Weather in March

March, the first month of the spring in Harkness, is also a wintry month, with an average temperature fluctuating between 41.9°F (5.5°C) and 26.1°F (-3.3°C). March shows a rise in the average high-temperature, moving from February's 32.7°F (0.4°C) to a still icy 41.9°F (5.5°C). Weather in March »

Weather in April

April is a fresh spring month in Harkness, Pennsylvania, with an average temperature ranging between min 35.6°F (2°C) and max 54.1°F (12.3°C). Harkness's transition into April is marked by a temperature shift, moving from an icy 41.9°F (5.5°C) in March to a fresh 54.1°F (12.3°C). Weather in April »

Weather in May

May, the last month of the spring in Harkness, is an enjoyable month, with an average temperature varying between 67.5°F (19.7°C) and 46.6°F (8.1°C). Harkness in May sees a temperature change, with average high-temperatures moving from a fresh 54.1°F (12.3°C) in April to a refreshing 67.5°F (19.7°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Harkness, Pennsylvania, with temperature in the range of an average low of 52.9°F (11.6°C) and an average high of 75.4°F (24.1°C). June's arrival coincides with a subtle temperature rise, moving from May's refreshing 67.5°F (19.7°C) to a moderately hot 75.4°F (24.1°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Harkness, Pennsylvania, with temperature in the range of an average high of 80.4°F (26.9°C) and an average low of 57.6°F (14.2°C). Harkness's warmest month, July, generally records average temperatures ranging from a high of 80.4°F (26.9°C) to a low of 57.6°F (14.2°C). Weather in July »

Weather in August

August, the last month of the summer in Harkness, is also a moderately hot month, with an average temperature ranging between min 55.9°F (13.3°C) and max 77.5°F (25.3°C). The onset of August marks an average high-temperature of a still warm 77.5°F (25.3°C), hardly differing from July's 80.4°F (26.9°C). Weather in August »

Weather in September

September, the first month of the autumn in Harkness, is also an agreeable month, with temperature in the range of an average low of 50.2°F (10.1°C) and an average high of 70.7°F (21.5°C). September brings a slight decrease in the average high-temperature, shifting from a moderately hot 77.5°F (25.3°C) in August to a pleasant 70.7°F (21.5°C). Weather in September »

Weather in October

October, the same as September, in Harkness, Pennsylvania, is another mild autumn month, with an average temperature varying between 41.9°F (5.5°C) and 57.9°F (14.4°C). The shift from September to October involves a decrease in the average high-temperature, from an agreeable 70.7°F (21.5°C) to a moderate 57.9°F (14.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Harkness, Pennsylvania, with an average temperature fluctuating between 45.3°F (7.4°C) and 31.1°F (-0.5°C). In Harkness, the average high-temperature in November decreases from a mild 57.9°F (14.4°C) in October to a chilly 45.3°F (7.4°C). Weather in November »

Weather in December

December, the first month of the winter in Harkness, is also a wintry month, with an average temperature varying between 25.5°F (-3.6°C) and 35.2°F (1.8°C). The onset of December results in a decrease in the average high-temperature, receding from a frosty 45.3°F (7.4°C) in November to a wintry 35.2°F (1.8°C). Weather in December »
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in Harkness?

January is the month when Harkness, Pennsylvania, sees the average lowest temperatures, with a high of 29.3°F (-1.5°C) and a low of 17.8°F (-7.9°C).

What is the driest month in Harkness?

The month with the least rainfall in Harkness, Pennsylvania, is January, when the rain falls for 7.3 days and typically collects 1.38" (35mm) of precipitation.

How many days does it rain in Harkness?

In Harkness, during the entire year, the rain falls for 164.7 days and collects up to 24.09" (612mm) of precipitation.

When does it snow in Harkness?

January through May, October through December are months with snowfall in Harkness, Pennsylvania.

How much does it snow in Harkness?

In Harkness, Pennsylvania, during the entire year, snow falls for 67.5 days and aggregates up to 20.75" (527mm) of snow.

What are the months with the least sunshine in Harkness?

January, February and December, with an average of 3.2h of sunshine, are months with the least sunshine in Harkness.

When is the lowest UV index in Harkness?

The months with the lowest UV index in Harkness, Pennsylvania, are January and December, with an average maximum UV index of 1.

What is the most humid month in Harkness?

With an average relative humidity of 85%, February is the most humid month in Harkness.

When does it snow the most in Harkness?

The month with the most snowfall is February, when snow falls for 15.8 days and typically aggregates up to 5.51" (140mm) of snow.

When is Daylight Saving Time (DST) in Harkness?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What are the least humid months in Harkness?

The months with the lowest humidity are April, June and July, with an average relative humidity of 78%.

What is the rainiest month in Harkness?

The month with the most rainfall is May, when the rain falls for 17.6 days and typically aggregates up to 2.44" (62mm) of precipitation.

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

May through August, with an average maximum UV index of 5, are months with the highest UV index in Harkness.

When it does not snow in Harkness?

In Harkness, Pennsylvania, snow does not fall in June through September.

When are the longest days in Harkness?

The month with the longest days in Harkness is June, with an average of 15h and 12min of daylight.

What is the hottest time of year in Harkness?

July, characterized by an average high temperature of 80.4°F (26.9°C) and a low temperature of 57.6°F (14.2°C), is generally the warmest month in Harkness, Pennsylvania.

What month has the most sunshine in Harkness?

With an average of 10h of sunshine, July has the most sunshine of the year in Harkness.

What is the month with the shortest days in Harkness?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

Average temperature
Harkness, PA

Average temperature - Harkness, PA

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (29.3°F).

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

Average pressure
Harkness, PA

Average pressure - Harkness, PA

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed
Harkness, PA

Average wind speed - Harkness, PA

The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity
Harkness, PA

Average humidity - Harkness, PA

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, June and July (78%).

Average rainfall
Harkness, PA

Average rainfall - Harkness, PA

The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is January (1.38").

Average rainfall days
Harkness, PA

Average rainfall days - Harkness, PA

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.3 days).

Average snowfall
Harkness, PA

Average snowfall - Harkness, PA

The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Harkness, PA

Average snowfall days - Harkness, PA

The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Harkness, PA

Average daylight / Average sunshine - Harkness, PA

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).

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 12min).

Average sunshine days
Harkness, PA

Average sunshine days - Harkness, PA

The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (8.8 days).

Average UV index
Harkness, PA

Average UV index - Harkness, PA

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover
Harkness, PA

Average cloud cover - Harkness, PA

The months with the most cloud cover are January, February and December (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 39).

Average visibility
Harkness, PA

Average visibility - Harkness, PA

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

Harkness, Pennsylvania, USA

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