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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 South Mountain, Pennsylvania, with an average temperature varying between 35.4°F (1.9°C) and 22.6°F (-5.2°C). With its high average temperature of 35.4°F (1.9°C) and a low of 22.6°F (-5.2°C), January is regarded as the coldest month. Weather in January »
Weather in February
February, the last month of the winter in South Mountain, is another cold month, with an average temperature ranging between min 24.4°F (-4.2°C) and max 39.7°F (4.3°C). The shift into February reveals an average high-temperature of a still wintry 39.7°F (4.3°C), closely mirroring January's climate. Weather in February »
Weather in March
March, the first month of the spring in South Mountain, is a chilly month, with an average temperature ranging between min 31.6°F (-0.2°C) and max 48.7°F (9.3°C). Entering March, South Mountain sees a temperature rise, with the average high-temperature advancing from February's icy 39.7°F (4.3°C) to a chilly 48.7°F (9.3°C). Weather in March »
Weather in April
April is a comfortable spring month in South Mountain, Pennsylvania, with an average temperature varying between 41.7°F (5.4°C) and 61.2°F (16.2°C). With the onset of April, South Mountain sees a temperature rise, with the average high-temperature moving from March's frosty 48.7°F (9.3°C) to a comfortable 61.2°F (16.2°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in South Mountain, Pennsylvania, with an average temperature ranging between max 71.1°F (21.7°C) and min 51.8°F (11°C). May's arrival sees a rise in the average high-temperature, jumping from April's comfortable 61.2°F (16.2°C) to an agreeable 71.1°F (21.7°C). Weather in May »
Weather in June
June, the first month of the summer in South Mountain, is a warm month, with an average temperature ranging between max 79.2°F (26.2°C) and min 58.6°F (14.8°C). June's onset brings a subtle temperature rise, moving from a pleasant 71.1°F (21.7°C) in May to a moderately hot 79.2°F (26.2°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in South Mountain, Pennsylvania, with an average temperature ranging between max 84.2°F (29°C) and min 63.7°F (17.6°C). South Mountain, Pennsylvania, records the warmest temperatures in July, averaging a high of 84.2°F (29°C) and a low of 63.7°F (17.6°C). The heat index for July is calculated to be a hot 93.2°F (34°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in South Mountain, Pennsylvania, with an average temperature varying between 81.7°F (27.6°C) and 62.2°F (16.8°C). August's climate shows a minor adjustment in average high-temperatures to a still moderately hot 81.7°F (27.6°C) from July's 84.2°F (29°C). Weather in August »
Weather in September
September, the first month of the autumn in South Mountain, is also a moderately hot month, with temperature in the range of an average low of 55.9°F (13.3°C) and an average high of 74.8°F (23.8°C). The transition to September results in a modest reduction in average high-temperature, moving from 81.7°F (27.6°C) in August to a still moderately hot 74.8°F (23.8°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in South Mountain, Pennsylvania, with an average temperature varying between 46.2°F (7.9°C) and 63.1°F (17.3°C). South Mountain's October weather features a mild decline in high-temperatures, reducing from a moderately hot 74.8°F (23.8°C) in September to a refreshing 63.1°F (17.3°C). Weather in October »
Weather in November
November, the last month of the autumn in South Mountain, is another cool month, with an average temperature varying between 35.1°F (1.7°C) and 50.4°F (10.2°C). The start of November signals a decrease in the average high-temperature, transitioning from an enjoyable 63.1°F (17.3°C) in October to a cool 50.4°F (10.2°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in South Mountain, Pennsylvania, with temperature in the range of an average low of 29.3°F (-1.5°C) and an average high of 41.5°F (5.3°C). The onset of December brings a small shift in high-temperatures, falling from a cool 50.4°F (10.2°C) in November to an icy 41.5°F (5.3°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in South Mountain?
January tends to be the coldest month, with temperatures averaging a daily high of 35.4°F (1.9°C) and a low of 22.6°F (-5.2°C).
How much does it rain in South Mountain?
Throughout the year, there are 125.3 rainfall days, and 10.59" (269mm) of precipitation is accumulated.
When does it snow in South Mountain?
January through April, November and December are months with snowfall.
What is the snowiest month in South Mountain?
The month with the most snowfall is January, when snow falls for 6.7 days and typically aggregates up to 1.06" (27mm) of snow.
How many days does it snow in South Mountain?
In South Mountain, Pennsylvania, during the entire year, snow falls for 20.2 days and aggregates up to 3.54" (90mm) of snow.
What are the months with the lowest UV index in South Mountain?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the most humid month in South Mountain?
February, May and October, with an average relative humidity of 80%, are most humid months.
What is the month with the least sunshine in South Mountain?
With an average of 4.5h of sunshine, February has the least sunshine of the year in South Mountain, Pennsylvania.
When is Daylight Saving Time (DST) in South Mountain?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in South Mountain, Pennsylvania, 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 wettest month in South Mountain?
May is the month with the most rainfall. Rain falls for 14.9 days and accumulates 1.26" (32mm) of precipitation.
When it does not snow in South Mountain?
May through October are months without snowfall.
When are the longest days in South Mountain?
June has the longest days of the year in South Mountain, with an average of 15h and 0min of daylight.
What is the month with the highest UV index in South Mountain?
The months with the highest UV index in South Mountain, Pennsylvania, are June through August, with an average maximum UV index of 6.
What time of the year is the hottest in South Mountain?
In South Mountain, July registers the highest temperatures, averaging 84.2°F (29°C) at the peak and 63.7°F (17.6°C) at the lowest.
What is the least humid month in South Mountain?
July is the least humid month in South Mountain, Pennsylvania, with an average relative humidity of 75%.
What month has the most sunshine in South Mountain?
The month with the most sunshine in South Mountain, Pennsylvania, is July, with an average of 10.5h of sunshine.
What is the driest month in South Mountain?
The month with the least rainfall in South Mountain is September, when the rain falls for 10 days and typically collects 0.55" (14mm) of precipitation.
What is the month with the shortest days in South Mountain?
With an average of 9h and 24min of daylight, December has the shortest days of the year.
Average temperature
South Mountain, PA
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.4°F).
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure
South Mountain, PA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.07"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:
30.14"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
South Mountain, PA
- Average wind speed in January:
8mph - Average wind speed in February:
7.9mph - Average wind speed in March:
7.8mph - Average wind speed in April:
7.8mph - Average wind speed in May:
6.1mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
4.7mph - Average wind speed in August:
4.7mph - Average wind speed in September:
5.3mph - Average wind speed in October:
6.5mph - Average wind speed in November:
6.9mph - Average wind speed in December:
7.3mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity
South Mountain, PA
The months with the highest relative humidity are February, May and October (80%).
The month with the lowest relative humidity is July (75%).
Average rainfall
South Mountain, PA
- Average rainfall in January:
0.71" - Average rainfall in February:
0.67" - Average rainfall in March:
0.71" - Average rainfall in April:
1.02" - Average rainfall in May:
1.26" - Average rainfall in June:
0.98"
- Average rainfall in July:
1.18" - Average rainfall in August:
1.1" - Average rainfall in September:
0.55" - Average rainfall in October:
0.94" - Average rainfall in November:
0.75" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is May (1.26").
The driest month (with the least rainfall) is September (0.55").
Average rainfall days
South Mountain, PA
- Average rainfall days in January:
5.4 days - Average rainfall days in February:
7.7 days - Average rainfall days in March:
10.2 days - Average rainfall days in April:
13.5 days - Average rainfall days in May:
14.9 days - Average rainfall days in June:
12.5 days
- Average rainfall days in July:
14.5 days - Average rainfall days in August:
13.2 days - Average rainfall days in September:
10 days - Average rainfall days in October:
9.3 days - Average rainfall days in November:
6.4 days - Average rainfall days in December:
7.7 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (5.4 days).
Average snowfall
South Mountain, PA
The month with the highest snowfall is January (1.06").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
South Mountain, PA
- Average snowfall days in January:
6.7 days - Average snowfall days in February:
5.9 days - Average snowfall days in March:
3.7 days - Average snowfall days in April:
0.4 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:
0.6 days - Average snowfall days in December:
2.9 days
The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
South Mountain, 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:
4h and 4min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
8h and 2min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 2min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
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
South Mountain, PA
- Average sunshine days in January:
20.6 days - Average sunshine days in February:
16.8 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
14.3 days - Average sunshine days in May:
12.9 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
15.1 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
19.5 days - Average sunshine days in November:
21.7 days - Average sunshine days in December:
20.7 days
The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is May (12.9 days).
Average UV index
South Mountain, PA
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
South Mountain, PA
The months with the most cloud cover are January and February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility
South Mountain, PA
The months with the highest visibility are March, April, June, July, November and December (6mi).
The months with the lowest visibility are January, February, May, August, September and October (5mi).
South Mountain, Pennsylvania, USA
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