Hourly Weather Forecast for Harrisburg, PA - The Weather Channel | Weather.com (2024)

FAQs

What is the coldest month in Harrisburg, Pennsylvania? ›

Harrisburg's coldest month is January when the average temperature overnight is 23.1°F.

The humidity is 62.13 percent with a dew point of 69.8 degrees fahrenheit that is falling since the last report. Wind direction is from the SouthSouthEast at 14 miles per hour, gusting at 10 mph. Sunrise is at 6:01 AM and Sunset is at 8:23 PM. The moon phase is a Waning Crescent Moon.

Smethport is part of the Bradford, PA Micropolitan Statistical Area. Smethport, having the coldest temperature ever recorded in Pennsylvania, is the coldest place in Pennsylvania and one of the coldest towns in the contiguous United States.

Straddling two major climate zones, the southeastern corner of Pennsylvania has the warmest climate. A portion of Greater Philadelphia lies at the southernmost tip of the humid continental climate zone, with the city proper being in the humid subtropical climate zone.

Throughout the year, the temperature in Harrisburg city varies between a low of 21°F and a high of 86°F. The city also experiences an annual precipitation of 45 inches and a snowfall of 25 inches.

Harrisburg city, Dauphin County, Pennsylvania.

Generally, here's how it works: Atmospheric (barometric) pressure goes down when weather conditions become more severe – thunder clouds rolling in, the sky darkening, wind picking up, etc. Atmospheric (barometric) pressure goes up when weather conditions level out – clouds clear, humidity drops, etc.

What is the highest barometric pressure can go? ›

The highest sea-level air pressure ever recorded was 1083.8 mb (32.01 in. Hg) in Agata, Siberia on December 31, 1968; produced by a very cold, dense air mass. The lowest sea-level air pressure ever recorded was 870 mb (25.69 in. Hg) measured on October 12, 1979 in the eye of Typhoon Tip as it moved over Guam.

People are most comfortable with barometric pressure of 30 inches of mercury (inHg). When it rises to 30.3 inHg or higher, or drops to 29.7 or lower, the risk of heart attack increases. A barometric reading over 30.20 inHg is generally considered high, and high pressure is associated with clear skies and calm weather.

Sunny: To express a bright and sunny day, you can use phrases like “clear skies,” “beaming sun,” or “gorgeous weather.” You could say, “It's a perfect day for a picnic with the clear skies and beaming sun!”

Atmospheric Controllers Of Local Nighttime Temperature. The ground routinely starts to cool after the sun sets because it emits more radiation than it gains from the atmosphere. In other words, the temperature of the ground starts to lower because it runs a radiation deficit (more losses than gains).

There are many possible answers depending on the weather. Answers such as “It's a sunny day” or “it's warm here today” or “Its cold outside” or “it's cold today” , “the weather is wet”, “it's raining” “”snowing” etc, or even “I haven't been outside so I don't know,” are all perfectly good answers.

PA has 5 regions that all have different weather conditions and it really depends on where you are going to be. The coldest months are January and February. Generally December in the Philly area or the Susquehanna Valley, daytime temps are about 40 and night is about 30.

Harrisburg averages 29.9 inches of snow every year based on data between 1991 and 2020. This average has decreased from the long term average, which is 33.2 inches since 1889.

Pennsylvania's lowest recorded temperature was -42 degrees Fahrenheit in Smethport on January 5, 1904.

The average last snowfall is on March 14 in New York City, March 15 in Philadelphia and March 27 in Boston. However, the last 0.1 inches of snow is typically not until early April in Pittsburgh and Syracuse, New York, and late April in Caribou, Maine.