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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, is another cold winter month in Penn, Pennsylvania, with an average temperature fluctuating between 20.5°F (-6.4°C) and 32.9°F (0.5°C). The month of January sees the lowest average temperatures, reaching 32.9°F (0.5°C) at the peak and 20.5°F (-6.4°C) at the low. Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Penn, Pennsylvania, with an average temperature ranging between max 37°F (2.8°C) and min 23°F (-5°C). The shift into February finds Penn at an average high-temperature of a still cold 37°F (2.8°C), closely comparable to January's conditions. Weather in February »
Weather in March
March, the first month of the spring in Penn, is a frosty month, with an average temperature varying between 46.9°F (8.3°C) and 30.7°F (-0.7°C). With the onset of March, the average high-temperature slightly shifts from February's wintry 37°F (2.8°C) to a chilly 46.9°F (8.3°C). Weather in March »
Weather in April
April in Penn, Pennsylvania, is a moderate spring month, with temperature in the range of an average high of 59.7°F (15.4°C) and an average low of 40.6°F (4.8°C). The arrival of April signals an increase in the average high-temperature, moving from a chilly 46.9°F (8.3°C) in March to a moderate 59.7°F (15.4°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Penn, Pennsylvania, with an average temperature varying between 50°F (10°C) and 71.1°F (21.7°C). Penn's May weather brings a rise in high-temperatures, moving from a refreshing 59.7°F (15.4°C) in April to a pleasant 71.1°F (21.7°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Penn, Pennsylvania, with an average temperature fluctuating between 56.7°F (13.7°C) and 77.7°F (25.4°C). June's onset is marked by a subtle temperature increase, moving from a pleasant 71.1°F (21.7°C) in May to a warm 77.7°F (25.4°C). Weather in June »
Weather in July
July, like June, in Penn, Pennsylvania, is another warm summer month, with an average temperature fluctuating between 82.6°F (28.1°C) and 61.2°F (16.2°C). July registers as the month with the highest average temperatures, reaching 82.6°F (28.1°C) at its peak and 61.2°F (16.2°C) at the lowest. The heat index for July is computed to be a hot 89.6°F (32°C). Weather in July »
Weather in August
August, the last month of the summer in Penn, is also a moderately hot month, with an average temperature fluctuating between 81.1°F (27.3°C) and 59.2°F (15.1°C). As August takes its course, Penn's average high-temperature registers at a still moderately hot 81.1°F (27.3°C), closely aligning with the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Penn, Pennsylvania, with an average temperature fluctuating between 74.5°F (23.6°C) and 54.5°F (12.5°C). The average high-temperature shows a slight dip in September, from August's warm 81.1°F (27.3°C) to a still moderately hot 74.5°F (23.6°C). Weather in September »
Weather in October
October, like September, in Penn, Pennsylvania, is another refreshing autumn month, with an average temperature fluctuating between 61.5°F (16.4°C) and 44.6°F (7°C). In Penn, the average high-temperature in October decreases from a warm 74.5°F (23.6°C) in September to an enjoyable 61.5°F (16.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Penn, is also a frosty month, with an average temperature ranging between max 48.9°F (9.4°C) and min 33.6°F (0.9°C). November's arrival correlates with a reduction in the average high-temperature, down from a comfortable 61.5°F (16.4°C) in October to a chilly 48.9°F (9.4°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Penn, Pennsylvania, with an average temperature varying between 27.7°F (-2.4°C) and 39°F (3.9°C). December comes with a decrease in the average high-temperature, falling from a chilly 48.9°F (9.4°C) in November to a cold 39°F (3.9°C). Weather in December »
Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
January, marked by an average high-temperature of 32.9°F (0.5°C) and a low-temperature of 20.5°F (-6.4°C), is the coldest month.
What is the most humid month?
The months with the highest humidity are January and February, with an average relative humidity of 85%.
How many days does it rain?
Throughout the year, there are 183.8 rainfall days, and 35.16" (893mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through May, October through December.
When does it snow the most in Penn?
The month with the most snowfall is January, when snow falls for 18.2 days and typically aggregates up to 7.05" (179mm) of snow.
How much does it snow?
Throughout the year, there are 65 snowfall days, and 28.98" (736mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 2.9h of sunshine, January has the least sunshine of the year.
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.
What are the least humid months?
The months with the lowest humidity in Penn, Pennsylvania, are April, July and August, with an average relative humidity of 77%.
What is the rainiest month in Penn?
May is the month with the most rainfall. Rain falls for 20.1 days and accumulates 3.78" (96mm) of precipitation.
When it does not snow?
In Penn, snow does not fall in June through September.
When are the longest days?
With an average of 15h and 0min of daylight, June has the longest days of the year in Penn.
What are the months with the highest UV index?
The months with the highest UV index are June and July, with an average maximum UV index of 6.
What month is the hottest?
July brings the highest temperatures, with an average high of 82.6°F (28.1°C) and an average low of 61.2°F (16.2°C).
What month has the most sunshine?
With an average of 10.1h of sunshine, August has the most sunshine of the year.
What is the driest month?
November is the month with the least rainfall. Rain falls for 11.7 days and accumulates 2.09" (53mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 24min of daylight.
When is the lowest UV index?
With an average maximum UV index of 1, December is the month with the lowest UV index.
Average temperature
Penn, PA
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32.9°F).
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure
Penn, PA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.11"Hg
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
Penn, PA
- Average wind speed in January:
8.3mph - Average wind speed in February:
8mph - Average wind speed in March:
7.6mph - Average wind speed in April:
7.7mph - Average wind speed in May:
6.3mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
4.7mph - Average wind speed in September:
5.2mph - Average wind speed in October:
6.4mph - Average wind speed in November:
7mph - Average wind speed in December:
7.8mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity
Penn, PA
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall
Penn, PA
- Average rainfall in January:
2.6" - Average rainfall in February:
2.99" - Average rainfall in March:
2.87" - Average rainfall in April:
3.46" - Average rainfall in May:
3.78" - Average rainfall in June:
3.19"
- Average rainfall in July:
3.19" - Average rainfall in August:
2.48" - Average rainfall in September:
2.48" - Average rainfall in October:
3.03" - Average rainfall in November:
2.09" - Average rainfall in December:
2.99"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is November (2.09").
Average rainfall days
Penn, PA
- Average rainfall days in January:
9.5 days - Average rainfall days in February:
10.6 days - Average rainfall days in March:
14.8 days - Average rainfall days in April:
17.9 days - Average rainfall days in May:
20.1 days - Average rainfall days in June:
18.6 days
- Average rainfall days in July:
18.4 days - Average rainfall days in August:
17.3 days - Average rainfall days in September:
15.2 days - Average rainfall days in October:
16.6 days - Average rainfall days in November:
11.7 days - Average rainfall days in December:
13.1 days
The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is January (9.5 days).
Average snowfall
Penn, PA
The month with the highest snowfall is January (7.05").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Penn, PA
- Average snowfall days in January:
18.2 days - Average snowfall days in February:
14.4 days - Average snowfall days in March:
9.5 days - Average snowfall days in April:
2.9 days - Average snowfall days in May:
0.2 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
5.8 days - Average snowfall days in December:
13.5 days
The month with the highest number of snowfall days is January (18.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Penn, PA
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 2min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 2min
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).
- Average sunshine in January:
2h and 5min - Average sunshine in February:
3h and 3min - Average sunshine in March:
5h and 2min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 1min - Average sunshine in November:
4h and 5min - Average sunshine in December:
3h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days
Penn, PA
- Average sunshine days in January:
7 days - Average sunshine days in February:
6.7 days - Average sunshine days in March:
9.2 days - Average sunshine days in April:
10.3 days - Average sunshine days in May:
9.2 days - Average sunshine days in June:
9.7 days
- Average sunshine days in July:
10.8 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
12.9 days - Average sunshine days in October:
12.1 days - Average sunshine days in November:
14 days - Average sunshine days in December:
9.1 days
The month with the most sunshine days is November (14 days).
The month with the least sunshine days is February (6.7 days).
Average UV index
Penn, PA
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Penn, PA
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility
Penn, PA
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Penn, Pennsylvania, USA
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