Climate and monthly weather forecastPenllyn, PA
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Penllyn, Pennsylvania, with an average temperature ranging between max 36.7°F (2.6°C) and min 24.6°F (-4.1°C). Penllyn reaches its lowest average temperatures in January, measuring 36.7°F (2.6°C) at the peak and 24.6°F (-4.1°C) at the lowest. Weather in January »Weather in February
February, the last month of the winter in Penllyn, is also an icy month, with an average temperature ranging between max 40.5°F (4.7°C) and min 26.6°F (-3°C). The advent of February denotes an average high-temperature of a still cold 40.5°F (4.7°C), subtly different from January's 36.7°F (2.6°C). Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Penllyn, Pennsylvania, with an average temperature ranging between max 48.7°F (9.3°C) and min 33.8°F (1°C). Penllyn's transition into March sees a mild rise in the average high-temperature, edging from a cold 40.5°F (4.7°C) in February to a chilly 48.7°F (9.3°C). Weather in March »Weather in April
April is a comfortable spring month in Penllyn, Pennsylvania, with temperature in the range of an average high of 61.2°F (16.2°C) and an average low of 44.1°F (6.7°C). In April, the average high-temperature increases from a chilly 48.7°F (9.3°C) in March to an enjoyable 61.2°F (16.2°C). Weather in April »Weather in May
May, the last month of the spring in Penllyn, is an agreeable month, with an average temperature varying between 71.8°F (22.1°C) and 54.1°F (12.3°C). Penllyn in May shows a temperature shift, moving from an average high of a comfortable 61.2°F (16.2°C) in April to a pleasant 71.8°F (22.1°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Penllyn, Pennsylvania, with temperature in the range of an average high of 79.9°F (26.6°C) and an average low of 62.1°F (16.7°C). June sees a marginal temperature increase, moving from a pleasant 71.8°F (22.1°C) in May to a warm 79.9°F (26.6°C). Weather in June »Weather in July
July is a tropical summer month in Penllyn, Pennsylvania, with temperature in the range of an average low of 68.2°F (20.1°C) and an average high of 86.2°F (30.1°C). July stands out as Penllyn's warmest month, with an average high-temperature of 86.2°F (30.1°C) and a low-temperature of 68.2°F (20.1°C). For most parts of July, the heat index is appraised at a very hot 96.8°F (36°C). Weather in July »Weather in August
August, the last month of the summer in Penllyn, is also a moderately hot month, with an average temperature varying between 66.7°F (19.3°C) and 83.3°F (28.5°C). The arrival of August coincides with an average high-temperature of a warm 83.3°F (28.5°C), indicating a minimal shift from July's 86.2°F (30.1°C). Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Penllyn, Pennsylvania, with an average temperature ranging between max 76.1°F (24.5°C) and min 59.9°F (15.5°C). The onset of September brings a small shift in high-temperatures, falling from a moderately hot 83.3°F (28.5°C) in August to a still warm 76.1°F (24.5°C). Weather in September »Weather in October
October, like September, in Penllyn, Pennsylvania, is another refreshing autumn month, with an average temperature varying between 64°F (17.8°C) and 49.5°F (9.7°C). As September shifts into October, a slight alteration in temperatures is observed, with average highs reducing from a moderately hot 76.1°F (24.5°C) to a comfortable 64°F (17.8°C). Weather in October »Weather in November
November, the last month of the autumn in Penllyn, is another cool month, with temperature in the range of an average high of 52.2°F (11.2°C) and an average low of 37.9°F (3.3°C). November shows a mild decline in the average high-temperature, falling from October's refreshing 64°F (17.8°C) to a fresh 52.2°F (11.2°C). Weather in November »Weather in December
The first month of the winter, December, is still a chilly month in Penllyn, Pennsylvania, with an average temperature fluctuating between 31.6°F (-0.2°C) and 42.8°F (6°C). A shift in Penllyn's weather is observed as November turns into December, with the average high temperature reducing from a cool 52.2°F (11.2°C) to a chilly 42.8°F (6°C). Weather in December »Updated: Aug 27, 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
With average high and low temperatures of 36.7°F (2.6°C) and 24.6°F (-4.1°C) respectively, January is Penllyn's coldest month.
In Penllyn, during the entire year, the rain falls for 122.4 days and collects up to 12.68" (322mm) of precipitation.
Months with snowfall are January through April, November and December.
Throughout the year, there are 16.3 snowfall days, and 4.72" (120mm) of snow is accumulated.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The months with the highest humidity are February, October and December, with an average relative humidity of 78%.
The month with the most snowfall is February, when snow falls for 4.8 days and typically aggregates up to 1.46" (37mm) of snow.
February has the least sunshine of the year, with an average of 4.8h of sunshine.
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.
April, July and August, with an average relative humidity of 72%, are the least humid months.
May through October are months without snowfall.
May through August, with an average maximum UV index of 6, are months with the highest UV index.
The month with the longest days is June, with an average of 15h and 0min of daylight.
With average temperatures fluctuating between a high of 86.2°F (30.1°C) and a low of 68.2°F (20.1°C), July stands out as the warmest month.
The month with the most sunshine is July, with an average of 10.7h of sunshine.
August is the month with the most rainfall. Rain falls for 12.7 days and accumulates 1.54" (39mm) of precipitation.
September is the month with the least rainfall. Rain falls for 10.1 days and accumulates 0.75" (19mm) of precipitation.
With an average of 9h and 24min of daylight, December has the shortest days of the year.
Average temperature
Penllyn, PA
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (36.7°F).
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure
Penllyn, PA
- Average pressure in January:
30.08"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Penllyn, PA
- Average wind speed in January:
8mph - Average wind speed in February:
8.1mph - Average wind speed in March:
8.4mph - Average wind speed in April:
8.3mph - Average wind speed in May:
6.7mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.4mph - Average wind speed in September:
5.8mph - Average wind speed in October:
6.8mph - Average wind speed in November:
7.2mph - Average wind speed in December:
7.6mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity
Penllyn, PA
The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April, July and August (72%).
Average rainfall
Penllyn, PA
- Average rainfall in January:
0.83" - Average rainfall in February:
0.83" - Average rainfall in March:
1.02" - Average rainfall in April:
0.98" - Average rainfall in May:
1.18" - Average rainfall in June:
1.22"
- Average rainfall in July:
1.42" - Average rainfall in August:
1.54" - Average rainfall in September:
0.75" - Average rainfall in October:
0.91" - Average rainfall in November:
0.87" - Average rainfall in December:
1.14"
The wettest month (with the highest rainfall) is August (1.54").
The driest month (with the least rainfall) is September (0.75").
Average rainfall days
Penllyn, PA
- Average rainfall days in January:
6.6 days - Average rainfall days in February:
7 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
11.9 days - Average rainfall days in May:
14.1 days - Average rainfall days in June:
13.1 days
- Average rainfall days in July:
13.9 days - Average rainfall days in August:
12.7 days - Average rainfall days in September:
10.1 days - Average rainfall days in October:
8.8 days - Average rainfall days in November:
6.4 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is November (6.4 days).
Average snowfall
Penllyn, PA
The month with the highest snowfall is February (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Penllyn, PA
- Average snowfall days in January:
5.1 days - Average snowfall days in February:
4.8 days - Average snowfall days in March:
3.3 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 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 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
2.5 days
The month with the highest number of snowfall days is January (5.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Penllyn, PA
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
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:
5h and 0min - Average sunshine in February:
4h and 48min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 24min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 42min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 36min - Average sunshine in November:
5h and 36min - Average sunshine in December:
5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days
Penllyn, PA
- Average sunshine days in January:
21.1 days - Average sunshine days in February:
17.6 days - Average sunshine days in March:
17.3 days - Average sunshine days in April:
15.4 days - Average sunshine days in May:
14.4 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
14.7 days - Average sunshine days in August:
15.4 days - Average sunshine days in September:
18.5 days - Average sunshine days in October:
19.7 days - Average sunshine days in November:
21.3 days - Average sunshine days in December:
20.9 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is May (14.4 days).
Average UV index
Penllyn, PA
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Penllyn, PA
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility
Penllyn, 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).
