Climate and monthly weather forecastSummerdale, PA
Climate and monthly weather forecast
Weather in January
January, like December, in Summerdale, Pennsylvania, is an icy winter month, with an average temperature varying between 35.1°F (1.7°C) and 22.1°F (-5.5°C). January is the coldest month of the year, registering average temperatures as high as 35.1°F (1.7°C) and as low as 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 Summerdale, Pennsylvania, with temperature in the range of an average high of 38.3°F (3.5°C) and an average low of 23.9°F (-4.5°C). As February takes hold, the average high-temperature is a still icy 38.3°F (3.5°C), nearly mirroring that of the previous month. Weather in February »Weather in March
March, the first month of the spring in Summerdale, is a frosty month, with an average temperature varying between 31.6°F (-0.2°C) and 47.8°F (8.8°C). Observing a rise in March, the average high-temperature goes from February's icy 38.3°F (3.5°C) to a frosty 47.8°F (8.8°C). Weather in March »Weather in April
April in Summerdale, Pennsylvania, is a mild spring month, with an average temperature varying between 60.1°F (15.6°C) and 41.7°F (5.4°C). April indicates a change in the average high-temperature, moving up 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
May, the last month of the spring in Summerdale, is a pleasant month, 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 Summerdale, is a moderately hot month, with an average temperature fluctuating between 58.6°F (14.8°C) and 78.1°F (25.6°C). June sees a marginal temperature increase, moving from an agreeable 70.3°F (21.3°C) in May to a warm 78.1°F (25.6°C). Weather in June »Weather in July
July, like June, in Summerdale, Pennsylvania, is another warm summer month, with an average temperature varying between 83.8°F (28.8°C) and 63.5°F (17.5°C). Summerdale's temperatures peak on average in July, reaching 83.8°F (28.8°C) at their highest and 63.5°F (17.5°C) at their lowest. For July, the heat index is evaluated at a hot 91.4°F (33°C). Weather in July »Weather in August
August, the last month of the summer in Summerdale, is also a moderately hot month, with an average temperature ranging between min 61.9°F (16.6°C) and max 81.5°F (27.5°C). August's onset sees an average high-temperature of a still warm 81.5°F (27.5°C), exhibiting a slight fluctuation from the previous month. Weather in August »Weather in September
September, the first month of the autumn in Summerdale, is still a warm month, with an average temperature varying between 55.6°F (13.1°C) and 74.3°F (23.5°C). As August transitions into September, Summerdale sees a gentle drop in the average high-temperature, transitioning from a warm 81.5°F (27.5°C) to a still moderately hot 74.3°F (23.5°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Summerdale, Pennsylvania, with temperature in the range of an average high of 62.8°F (17.1°C) and an average low of 46°F (7.8°C). Summerdale's October weather shows a moderate shift in high-temperatures, falling from September's moderately hot 74.3°F (23.5°C) to a refreshing 62.8°F (17.1°C). Weather in October »Weather in November
November, the last month of the autumn in Summerdale, is another cool month, with temperature in the range of an average high of 50°F (10°C) and an average low of 35.2°F (1.8°C). A shift in Summerdale's weather is observed as October turns into November, with the average high temperature reducing from a comfortable 62.8°F (17.1°C) to a fresh 50°F (10°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Summerdale, Pennsylvania, with temperature in the range of an average high of 41°F (5°C) and an average low of 29.7°F (-1.3°C). December's arrival comes with a decrease in the average high-temperature, moving from a cool 50°F (10°C) in November to a wintry 41°F (5°C). Weather in December »Updated: Jul 25, 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
The coldest period is January, when temperatures fluctuate between an average high of 35.1°F (1.7°C) and a low of 22.1°F (-5.5°C).
January and February are months with the least rain in Summerdale when the rain falls for 5.7 days and typically aggregates up to 0.71" (18mm) of rain.
Throughout the year, there are 122.3 rainfall days, and 11.73" (298mm) of precipitation is accumulated.
Months with snowfall are January through April, November and December.
Throughout the year, there are 19.9 snowfall days, and 4.29" (109mm) 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 most humid month is February, with an average relative humidity of 80%.
February is the month with the most snowfall. Snow falls for 5.6 days and accumulates 1.3" (33mm) of snow.
With an average of 4.5h of sunshine, February has the least sunshine of the year.
March and April, with an average relative humidity of 75%, are the least humid months.
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.
May through October are months without snowfall.
The months with the highest UV index are May through July, with an average maximum UV index of 6.
With an average of 15h and 0min of daylight, June has the longest days of the year.
July temperatures tend to peak at an average high of 83.8°F (28.8°C) and dip to a low of 63.5°F (17.5°C).
The month with the most sunshine is July, with an average of 10.5h of sunshine.
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.
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average temperature
Summerdale, 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
Summerdale, PA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.1"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
Summerdale, PA
- Average wind speed in January:
8mph - Average wind speed in February:
8.1mph - Average wind speed in March:
8.2mph - Average wind speed in April:
8.1mph - Average wind speed in May:
6.3mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.3mph - Average wind speed in October:
6.6mph - Average wind speed in November:
7mph - Average wind speed in December:
7.6mph
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
Summerdale, 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
Summerdale, PA
- Average rainfall in January:
0.71" - Average rainfall in February:
0.71" - Average rainfall in March:
0.83" - Average rainfall in April:
1.02" - Average rainfall in May:
1.26" - Average rainfall in June:
1.1"
- Average rainfall in July:
1.26" - Average rainfall in August:
1.3" - Average rainfall in September:
0.79" - Average rainfall in October:
1.06" - Average rainfall in November:
0.83" - Average rainfall in December:
0.87"
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
Summerdale, PA
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
6.1 days - Average rainfall days in March:
9 days - Average rainfall days in April:
13.1 days - Average rainfall days in May:
13.9 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
13.8 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
9.7 days - Average rainfall days in October:
9.7 days - Average rainfall days in November:
7.3 days - Average rainfall days in December:
8.4 days
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
Summerdale, 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
Summerdale, PA
- Average snowfall days in January:
6.3 days - Average snowfall days in February:
5.6 days - Average snowfall days in March:
3.7 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0.1 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:
3.5 days
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
Summerdale, 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:
4h and 36min - Average sunshine in February:
4h and 30min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 18min - Average sunshine in May:
8h and 30min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 12min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 24min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 42min
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
Summerdale, PA
- Average sunshine days in January:
20.6 days - Average sunshine days in February:
17.5 days - Average sunshine days in March:
18.3 days - Average sunshine days in April:
15 days - Average sunshine days in May:
14.5 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
14.1 days - Average sunshine days in August:
16.3 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
19.5 days - Average sunshine days in November:
21.8 days - Average sunshine days in December:
20.2 days
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
Summerdale, 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 cloud cover
Summerdale, PA
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility
Summerdale, 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).
