Climate and monthly weather forecast
Mechanicsburg, PA

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Weather in January

January, like December, in Mechanicsburg, Pennsylvania, is another cold winter month, with an average temperature ranging between min 22.1°F (-5.5°C) and max 35.1°F (1.7°C). Mechanicsburg witnesses the coldest weather in January, with temperatures averaging a high of 35.1°F (1.7°C) and a low of 22.1°F (-5.5°C). Weather in January »

Weather in February

The last month of the winter, February, is also an icy month in Mechanicsburg, Pennsylvania, with an average temperature ranging between min 23.9°F (-4.5°C) and max 38.3°F (3.5°C). With February's arrival, Mechanicsburg's weather records an average high-temperature of a still cold 38.3°F (3.5°C), marking little difference from January's 35.1°F (1.7°C). Weather in February »

Weather in March

March, the first month of the spring in Mechanicsburg, is a chilly month, with an average temperature ranging between max 47.8°F (8.8°C) and min 31.6°F (-0.2°C). March signals a shift in the average high-temperature, moving from February's cold 38.3°F (3.5°C) to a frosty 47.8°F (8.8°C). Weather in March »

Weather in April

April in Mechanicsburg, Pennsylvania, is a moderate spring month, with an average temperature ranging between max 60.1°F (15.6°C) and min 41.7°F (5.4°C). As Mechanicsburg transitions into April, the average high-temperature shows a change, moving from a chilly 47.8°F (8.8°C) in March to a moderate 60.1°F (15.6°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Mechanicsburg, 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). The shift into May is characterized by a rise in the average high-temperature, transitioning from April's moderate 60.1°F (15.6°C) to a pleasant 70.3°F (21.3°C). Weather in May »

Weather in June

June, the first month of the summer in Mechanicsburg, is a moderately hot month, with temperature in the range of an average low of 58.6°F (14.8°C) and an average high of 78.1°F (25.6°C). The onset of June introduces a subtle rise in the average high-temperature, nudging from an agreeable 70.3°F (21.3°C) in May to a moderately hot 78.1°F (25.6°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Mechanicsburg, Pennsylvania, with temperature in the range of an average high of 83.8°F (28.8°C) and an average low of 63.5°F (17.5°C). The average temperatures reach their apex in July, averaging 83.8°F (28.8°C) at the high end and 63.5°F (17.5°C) at the low end. The heat index for July is appraised at a hot 91.4°F (33°C). Weather in July »

Weather in August

August, the last month of the summer in Mechanicsburg, is another warm month, with an average temperature ranging between max 81.5°F (27.5°C) and min 61.9°F (16.6°C). In August, Mechanicsburg's weather conditions record an average high-temperature of a still moderately hot 81.5°F (27.5°C), demonstrating little divergence from the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Mechanicsburg, is still a warm month, with an average temperature varying between 74.3°F (23.5°C) and 55.6°F (13.1°C). In Mechanicsburg, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's 81.5°F (27.5°C) to a still warm 74.3°F (23.5°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Mechanicsburg, Pennsylvania, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 62.8°F (17.1°C). With the beginning of October, the average high-temperature shows a decrease, transitioning from a warm 74.3°F (23.5°C) in September to a refreshing 62.8°F (17.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Mechanicsburg, Pennsylvania, with an average temperature ranging between max 50°F (10°C) and min 35.2°F (1.8°C). Mechanicsburg's weather changes with the onset of November, slightly falling from a comfortable 62.8°F (17.1°C) in October to a fresh 50°F (10°C). Weather in November »

Weather in December

The first month of the winter, December, is also an icy month in Mechanicsburg, Pennsylvania, with an average temperature fluctuating between 41°F (5°C) and 29.7°F (-1.3°C). With December's arrival, Mechanicsburg sees a decrease in average high-temperatures, moving from a cool 50°F (10°C) in November to a wintry 41°F (5°C). Weather in December »
Updated: Jun 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

During the coldest month in Mechanicsburg, January, temperatures average a high of 35.1°F (1.7°C) and a low of 22.1°F (-5.5°C).

What is the driest month?

The months with the least rainfall are January and February Rain falls for 5.7 days and accumulates 0.71" (18mm) of rain.

How many days does it rain?

Throughout the year, there are 122.3 rainfall days, and 11.73" (298mm) of precipitation is accumulated.

When does it snow?

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

How many days does it snow?

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

What is the month with the lowest UV index?

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.

What is the most humid month?

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

What is the snowiest month?

The month with the most snowfall 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?

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

What is the least humid month?

The months with the lowest humidity are March and April, with an average relative humidity of 75%.

When is Daylight Saving Time (DST)?

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.

When it does not snow in Mechanicsburg?

In Mechanicsburg, Pennsylvania, snow does not fall in May through October.

What is the month with the highest UV index?

The months with the highest UV index are May through July, with an average maximum UV index of 6.

When are the longest days?

With an average of 15h and 0min of daylight, June has the longest days of the year.

What part of the year is the hottest?

July, characterized by an average high temperature of 83.8°F (28.8°C) and a low temperature of 63.5°F (17.5°C), is generally the warmest month.

What month has the most sunshine in Mechanicsburg?

The month with the most sunshine is July, with an average of 10.5h of sunshine.

What is the wettest month?

The month with the most rainfall is August, when the rain falls for 12.3 days and typically aggregates up to 1.3" (33mm) of precipitation.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

Average temperature
Mechanicsburg, PA

Average temperature - Mechanicsburg, PA

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.1°F).

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

Average pressure
Mechanicsburg, PA

Average pressure - Mechanicsburg, PA

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed
Mechanicsburg, PA

Average wind speed - Mechanicsburg, PA

The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity
Mechanicsburg, PA

Average humidity - Mechanicsburg, PA

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

Average rainfall
Mechanicsburg, PA

Average rainfall - Mechanicsburg, PA

The wettest month (with the highest rainfall) is August (1.3").
The driest months (with the least rainfall) are January and February (0.71").

Average rainfall days
Mechanicsburg, PA

Average rainfall days - Mechanicsburg, 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
Mechanicsburg, PA

Average snowfall - Mechanicsburg, PA

The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Mechanicsburg, PA

Average snowfall days - Mechanicsburg, PA

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

Average daylight / Average sunshine
Mechanicsburg, PA

Average daylight / Average sunshine - Mechanicsburg, PA

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days
Mechanicsburg, PA

Average sunshine days - Mechanicsburg, 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
Mechanicsburg, PA

Average UV index - Mechanicsburg, PA

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

Average visibility
Mechanicsburg, PA

Average visibility - Mechanicsburg, PA

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

Mechanicsburg, Pennsylvania, USA

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