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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
Climate and monthly weather forecast
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). January, noted for its average high-temperature of 32.9°F (0.5°C) and an average low-temperature of 20.5°F (-6.4°C), is considered the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in Penn, Pennsylvania, with an average temperature ranging between max 37°F (2.8°C) and min 23°F (-5°C). February commences with an average high-temperature of a still wintry 37°F (2.8°C), showing little deviation from January's 32.9°F (0.5°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Penn, Pennsylvania, with an average temperature ranging between min 30.7°F (-0.7°C) and max 46.9°F (8.3°C). As Penn transitions into March, the average high-temperature is observed to rise from a wintry 37°F (2.8°C) in February to a frosty 46.9°F (8.3°C). Weather in March »
Weather in April
April is a mild spring month in Penn, Pennsylvania, with temperature in the range of an average low of 40.6°F (4.8°C) and an average high of 59.7°F (15.4°C). As Penn enters April, the average high-temperature increases from the a chilly 46.9°F (8.3°C) of March to a mild 59.7°F (15.4°C). Weather in April »
Weather in May
May, the last month of the spring in Penn, is an agreeable month, with an average temperature ranging between max 71.1°F (21.7°C) and min 50°F (10°C). As April transitions into May, a change in temperatures is observed, with average highs moving from a moderate 59.7°F (15.4°C) to a pleasant 71.1°F (21.7°C). Weather in May »
Weather in June
June, the first month of the summer in Penn, is a warm month, with an average temperature ranging between min 56.7°F (13.7°C) and max 77.7°F (25.4°C). In June, the average high-temperature marginally rises 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, the same as June, is a moderately hot summer month in Penn, Pennsylvania, with an average temperature varying between 82.6°F (28.1°C) and 61.2°F (16.2°C). The warmest month is July, with an average high-temperature of 82.6°F (28.1°C) and an average low-temperature of 61.2°F (16.2°C). For most parts of July, the heat index is evaluated at a hot 89.6°F (32°C). Weather in July »
Weather in August
August, the last month of the summer in Penn, is another warm month, with an average temperature varying between 59.2°F (15.1°C) and 81.1°F (27.3°C). Stepping into August, Penn records an average high-temperature of a still moderately hot 81.1°F (27.3°C), almost consistent with July. Weather in August »
Weather in September
September, the first month of the autumn in Penn, is still a warm month, with an average temperature fluctuating between 54.5°F (12.5°C) and 74.5°F (23.6°C). As August makes way for September, Penn's average high-temperature eases from 81.1°F (27.3°C) to a still warm 74.5°F (23.6°C). Weather in September »
Weather in October
October, like September, in Penn, Pennsylvania, is another comfortable autumn month, with an average temperature fluctuating between 44.6°F (7°C) and 61.5°F (16.4°C). As October commences, the average high-temperature shows a reduction, transitioning from a moderately hot 74.5°F (23.6°C) in September to an enjoyable 61.5°F (16.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Penn, Pennsylvania, with temperature in the range of an average high of 48.9°F (9.4°C) and an average low of 33.6°F (0.9°C). Onset of November comes with a temperature decline, the average high falling from a refreshing 61.5°F (16.4°C) in October to a frosty 48.9°F (9.4°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Penn, Pennsylvania, with an average temperature fluctuating between 27.7°F (-2.4°C) and 39°F (3.9°C). With the beginning of December, the average high-temperature shows a decrease, transitioning from a chilly 48.9°F (9.4°C) in November to a cold 39°F (3.9°C). Weather in December »
Updated: Jul 18, 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 are the coldest months in Penn?
In Penn, January is the month with the lowest recorded average temperatures, measuring a high of 32.9°F (0.5°C) and a low of 20.5°F (-6.4°C).
What are the most humid months?
January and February, with an average relative humidity of 85%, are most humid months.
How much does it rain?
In Penn, during the entire year, the rain falls for 183.8 days and collects up to 35.16" (893mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
What is the snowiest month?
January is the month with the most snowfall. Snow falls for 18.2 days and accumulates 7.05" (179mm) of snow.
How much does it snow?
In Penn, during the entire year, snow falls for 65 days and aggregates up to 28.98" (736mm) of snow.
What is the month with the least sunshine?
With an average of 2.9h of sunshine, January has the least sunshine of the year in Penn.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Penn, 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 is the least humid month?
April, July and August, with an average relative humidity of 77%, are the least humid months.
What is the rainiest month?
The month with the most rainfall is May, when the rain falls for 20.1 days and typically aggregates up to 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.
When is the highest UV index?
The months with the highest UV index are June and July, with an average maximum UV index of 6.
What part of the year is the hottest?
In Penn, July registers the highest temperatures, averaging 82.6°F (28.1°C) at the peak and 61.2°F (16.2°C) at the lowest.
What month has the most sunshine?
The month with the most sunshine is August, with an average of 10.1h of sunshine.
What is the driest month?
The month with the least rainfall is November, when the rain falls for 11.7 days and typically collects 2.09" (53mm) of precipitation.
What is the month with the shortest days?
With an average of 9h and 24min of daylight, December has the shortest days of the year.
What is the month with the lowest UV index?
December is the month with the lowest UV index, with an average maximum UV index of 1.
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).