Climate and monthly weather forecastSouth Sterling, PA
Climate and monthly weather forecast
Weather in January
January, the same as December, in South Sterling, Pennsylvania, is another subzero cold winter month, with an average temperature fluctuating between 29.8°F (-1.2°C) and 18°F (-7.8°C). South Sterling's January weather, marked by an average high temperature of 29.8°F (-1.2°C) and an average low temperature of 18°F (-7.8°C), is the coldest in the year. Weather in January »Weather in February
The last month of the winter, February, is a wintry month in South Sterling, Pennsylvania, with an average temperature ranging between max 34.2°F (1.2°C) and min 20.1°F (-6.6°C). The advent of February observes an average high-temperature of a wintry 34.2°F (1.2°C), nearly identical to January's 29.8°F (-1.2°C). Weather in February »Weather in March
March, the first month of the spring in South Sterling, is also a wintry month, with an average temperature fluctuating between 41.7°F (5.4°C) and 27°F (-2.8°C). March comes with a subtle rise, with the average high-temperature adjusting from 34.2°F (1.2°C) in February to a still wintry 41.7°F (5.4°C). Weather in March »Weather in April
April in South Sterling, Pennsylvania, is a fresh spring month, with an average temperature fluctuating between 37°F (2.8°C) and 54.7°F (12.6°C). The onset of April brings a rise in the average high-temperature, elevating from a cold 41.7°F (5.4°C) in March to a fresh 54.7°F (12.6°C). Weather in April »Weather in May
May, the last month of the spring in South Sterling, is a refreshing month, with an average temperature fluctuating between 47.8°F (8.8°C) and 66.7°F (19.3°C). South Sterling in May experiences an increase in the average high-temperature, moving from April's cool 54.7°F (12.6°C) to an enjoyable 66.7°F (19.3°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in South Sterling, Pennsylvania, with an average temperature varying between 54.5°F (12.5°C) and 74.3°F (23.5°C). June brings a slight elevation in the average high-temperature, transitioning from May's enjoyable 66.7°F (19.3°C) to a moderately hot 74.3°F (23.5°C). Weather in June »Weather in July
July, like June, in South Sterling, Pennsylvania, is a moderately hot summer month, with an average temperature fluctuating between 59.5°F (15.3°C) and 80.8°F (27.1°C). July is the month when South Sterling experiences its warmest temperatures, averaging a high of 80.8°F (27.1°C) and a low of 59.5°F (15.3°C). In July, the heat index is estimated at a hot 86°F (30°C). Weather in July »Weather in August
August, the last month of the summer in South Sterling, is another warm month, with an average temperature ranging between min 57.7°F (14.3°C) and max 78.3°F (25.7°C). The transition into August marks the average high-temperature at a still warm 78.3°F (25.7°C), differing minimally from July's 80.8°F (27.1°C). Weather in August »Weather in September
September, the first month of the autumn in South Sterling, is also an agreeable month, with temperature in the range of an average high of 71.2°F (21.8°C) and an average low of 51.6°F (10.9°C). In the transition to September, South Sterling observes a minor drop in the average high-temperature, shifting from a moderately hot 78.3°F (25.7°C) in August to a pleasant 71.2°F (21.8°C). Weather in September »Weather in October
October, like September, is another mild autumn month in South Sterling, Pennsylvania, with temperature in the range of an average high of 58.1°F (14.5°C) and an average low of 43°F (6.1°C). As September transitions to October, the average high-temperature falls from an agreeable 71.2°F (21.8°C) to a mild 58.1°F (14.5°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in South Sterling, Pennsylvania, with an average temperature fluctuating between 31.8°F (-0.1°C) and 45.5°F (7.5°C). The beginning of November marks a decrease in the average high-temperature, transitioning from a moderate 58.1°F (14.5°C) in October to a chilly 45.5°F (7.5°C). Weather in November »Weather in December
December, the first month of the winter in South Sterling, is also a wintry month, with an average temperature fluctuating between 25.3°F (-3.7°C) and 36.1°F (2.3°C). Arrival of December comes with a reduction in the average high-temperature, falling from a chilly 45.5°F (7.5°C) in November to a wintry 36.1°F (2.3°C). Weather in December »Updated: Jul 11, 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
January, recording an average high temperature of 29.8°F (-1.2°C) and a low temperature of 18°F (-7.8°C), is South Sterling's coldest month.
In South Sterling, during the entire year, the rain falls for 154.8 days and collects up to 32.24" (819mm) of precipitation.
Months with snowfall are January through May, October through December.
Throughout the year, there are 62.1 snowfall days, and 38.86" (987mm) of snow is accumulated.
With an average relative humidity of 85%, February is the most humid month.
The month with the most snowfall is February, when snow falls for 13 days and typically aggregates up to 8.03" (204mm) of snow.
February has the least sunshine of the year, with an average of 3.8h 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.
The months with the highest UV index in South Sterling are May through August, with an average maximum UV index of 5.
June through September are months without snowfall.
June has the longest days of the year, with an average of 15h and 6min of daylight.
The month of July, characterized by an average high of 80.8°F (27.1°C) and a low of 59.5°F (15.3°C), is recognized as the warmest.
With an average relative humidity of 77%, July is the least humid month.
July is the month with the most rainfall. Rain falls for 17.7 days and accumulates 3.27" (83mm) of precipitation.
With an average of 10.1h of sunshine, July has the most sunshine of the year.
The month with the least rainfall is September, when the rain falls for 11.6 days and typically collects 1.85" (47mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 18min of daylight.
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
South Sterling, PA
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (29.8°F).
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure
South Sterling, 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:
29.98"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:
30.06"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
South Sterling, PA
- Average wind speed in January:
8.6mph - Average wind speed in February:
8.6mph - Average wind speed in March:
8.5mph - Average wind speed in April:
8.2mph - 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:
5.9mph - Average wind speed in October:
7.1mph - Average wind speed in November:
7.6mph - Average wind speed in December:
8.1mph
The windiest months (with the highest average wind speed) are January and February (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity
South Sterling, PA
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is July (77%).
Average rainfall
South Sterling, PA
- Average rainfall in January:
2.32" - Average rainfall in February:
2.36" - Average rainfall in March:
2.64" - Average rainfall in April:
3.03" - Average rainfall in May:
2.95" - Average rainfall in June:
2.76"
- Average rainfall in July:
3.27" - Average rainfall in August:
2.91" - Average rainfall in September:
1.85" - Average rainfall in October:
2.87" - Average rainfall in November:
2.44" - Average rainfall in December:
2.83"
The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days
South Sterling, PA
- Average rainfall days in January:
7.1 days - Average rainfall days in February:
7.5 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
15.7 days - Average rainfall days in May:
17.6 days - Average rainfall days in June:
16.2 days
- Average rainfall days in July:
17.7 days - Average rainfall days in August:
15.3 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
13.6 days - Average rainfall days in November:
9.9 days - Average rainfall days in December:
10.8 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (7.1 days).
Average snowfall
South Sterling, PA
- Average snowfall in January:
7.95" - Average snowfall in February:
8.03" - Average snowfall in March:
7.91" - Average snowfall in April:
1.69" - Average snowfall in May:
0.79" - Average snowfall in June:
0"
The month with the highest snowfall is February (8.03").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
South Sterling, PA
- Average snowfall days in January:
13.3 days - Average snowfall days in February:
13 days - Average snowfall days in March:
11.3 days - Average snowfall days in April:
3.8 days - Average snowfall days in May:
0.6 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:
1.1 days - Average snowfall days in November:
5.8 days - Average snowfall days in December:
13.2 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
South Sterling, PA
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 54min - Average sunshine in February:
3h and 48min - Average sunshine in March:
5h and 24min - Average sunshine in April:
7h and 24min - Average sunshine in May:
8h and 0min - Average sunshine in June:
9h and 18min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
9h and 36min - Average sunshine in September:
8h and 36min - Average sunshine in October:
5h and 6min - Average sunshine in November:
4h and 54min - Average sunshine in December:
3h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days
South Sterling, PA
- Average sunshine days in January:
14.8 days - Average sunshine days in February:
12.5 days - Average sunshine days in March:
12.7 days - Average sunshine days in April:
11.3 days - Average sunshine days in May:
10.9 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
16.1 days - Average sunshine days in October:
15 days - Average sunshine days in November:
16.5 days - Average sunshine days in December:
12.2 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (10.9 days).
Average UV index
South Sterling, PA
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
South Sterling, PA
The months with the most cloud cover are February and December (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility
South Sterling, PA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
