Climate and monthly weather forecastPorters Mill, PA
Climate and monthly weather forecast
Weather in January
January, like December, in Porters Mill, Pennsylvania, is another cold winter month, with an average temperature fluctuating between 35.4°F (1.9°C) and 23.2°F (-4.9°C). Porters Mill witnesses the coldest weather in January, with temperatures averaging a high of 35.4°F (1.9°C) and a low of 23.2°F (-4.9°C). Weather in January »Weather in February
The last month of the winter, February, is another cold month in Porters Mill, Pennsylvania, with an average temperature ranging between min 25°F (-3.9°C) and max 39.4°F (4.1°C). The arrival of February is marked by an average high-temperature of a still wintry 39.4°F (4.1°C), bearing a close resemblance to January. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Porters Mill, Pennsylvania, with an average temperature ranging between max 47.8°F (8.8°C) and min 32.4°F (0.2°C). March's arrival coincides with a subtle temperature rise, moving from February's icy 39.4°F (4.1°C) to a chilly 47.8°F (8.8°C). Weather in March »Weather in April
April is a mild spring month in Porters Mill, Pennsylvania, with temperature in the range of an average low of 42.3°F (5.7°C) and an average high of 60.3°F (15.7°C). As March transitions into April, a change in temperatures is observed, with average highs moving from a chilly 47.8°F (8.8°C) to a mild 60.3°F (15.7°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Porters Mill, Pennsylvania, with an average temperature ranging between max 70.7°F (21.5°C) and min 52.3°F (11.3°C). Entering May, Porters Mill sees a temperature rise, with the average high-temperature advancing from April's moderate 60.3°F (15.7°C) to an agreeable 70.7°F (21.5°C). Weather in May »Weather in June
June, the first month of the summer in Porters Mill, is a warm month, with an average temperature fluctuating between 60.1°F (15.6°C) and 78.6°F (25.9°C). With the transition into June, Porters Mill experiences a subtle uplift in average high-temperatures, adjusting from an agreeable 70.7°F (21.5°C) in May to a warm 78.6°F (25.9°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Porters Mill, Pennsylvania, with an average temperature ranging between max 84.2°F (29°C) and min 65.5°F (18.6°C). Porters Mill, Pennsylvania, records the warmest temperatures in July, averaging a high of 84.2°F (29°C) and a low of 65.5°F (18.6°C). July's heat index is computed 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 Porters Mill, Pennsylvania, with temperature in the range of an average high of 81.9°F (27.7°C) and an average low of 63.9°F (17.7°C). August reports an average high-temperature of a still warm 81.9°F (27.7°C), slightly varied from July's 84.2°F (29°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Porters Mill, Pennsylvania, with an average temperature fluctuating between 75.2°F (24°C) and 57.2°F (14°C). As August makes way for September, Porters Mill's average high-temperature eases from 81.9°F (27.7°C) to a still warm 75.2°F (24°C). Weather in September »Weather in October
October, like September, in Porters Mill, Pennsylvania, is another refreshing autumn month, with an average temperature fluctuating between 47.5°F (8.6°C) and 63°F (17.2°C). With the onset of October, Porters Mill experiences a modest temperature adjustment, with the average high-temperature receding from a moderately hot 75.2°F (24°C) in September to a comfortable 63°F (17.2°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Porters Mill, Pennsylvania, with temperature in the range of an average high of 50.7°F (10.4°C) and an average low of 37°F (2.8°C). With November's onset, the weather shows a temperature decrease, transitioning from a refreshing 63°F (17.2°C) in October to a fresh 50.7°F (10.4°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Porters Mill, Pennsylvania, with an average temperature varying between 41.5°F (5.3°C) and 30.2°F (-1°C). As December commences, the average high-temperature shows a reduction, transitioning from a fresh 50.7°F (10.4°C) in November to a wintry 41.5°F (5.3°C). Weather in December »Updated: Feb 13, 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, known for its average high temperature of 35.4°F (1.9°C) and an average low temperature of 23.2°F (-4.9°C), is the coldest month in Porters Mill.
Throughout the year, in Porters Mill, there are 146.5 rainfall days, and 27.87" (708mm) of precipitation is accumulated.
Months with snowfall are January through April, November and December.
In Porters Mill, Pennsylvania, during the entire year, snow falls for 19.1 days and aggregates up to 11.54" (293mm) of snow.
The months with the lowest UV index in Porters Mill are January through March, November and December, with an average maximum UV index of 2.
February and October, with an average relative humidity of 80%, are most humid months in Porters Mill.
February has the least sunshine of the year in Porters Mill, with an average of 4.7h of sunshine.
March is the month with the most snowfall. Snow falls for 4.5 days and accumulates 3.7" (94mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Porters Mill, 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 lowest humidity are April and July, with an average relative humidity of 75%.
May through October are months without snowfall in Porters Mill.
May through August, with an average maximum UV index of 6, are months with the highest UV index in Porters Mill, Pennsylvania.
With an average of 15h and 0min of daylight, June has the longest days of the year.
Porters Mill's July weather reaches an average high of 84.2°F (29°C) and an average low of 65.5°F (18.6°C), making it the warmest month.
July has the most sunshine of the year in Porters Mill, Pennsylvania, with an average of 10.6h of sunshine.
The month with the most rainfall in Porters Mill, Pennsylvania, is August, when the rain falls for 15.1 days and typically aggregates up to 3.15" (80mm) of precipitation.
September is the month with the least rainfall in Porters Mill. Rain falls for 12.3 days and accumulates 1.81" (46mm) of precipitation.
With an average of 9h and 24min of daylight, December has the shortest days of the year in Porters Mill.
Average temperature
Porters Mill, 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 (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure
Porters Mill, PA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"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:
30.06"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.1"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
Porters Mill, PA
- Average wind speed in January:
8mph - Average wind speed in February:
7.9mph - Average wind speed in March:
8.1mph - Average wind speed in April:
8mph - Average wind speed in May:
6.3mph - Average wind speed in June:
5.9mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
5mph - Average wind speed in September:
5.5mph - 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 (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity
Porters Mill, PA
The months with the highest relative humidity are February and October (80%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall
Porters Mill, PA
- Average rainfall in January:
1.85" - Average rainfall in February:
1.85" - Average rainfall in March:
2.32" - Average rainfall in April:
2.28" - Average rainfall in May:
2.6" - Average rainfall in June:
2.48"
- Average rainfall in July:
2.99" - Average rainfall in August:
3.15" - Average rainfall in September:
1.81" - Average rainfall in October:
2.13" - Average rainfall in November:
2.09" - Average rainfall in December:
2.32"
The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days
Porters Mill, PA
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
7.9 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
14.4 days - Average rainfall days in May:
17 days - Average rainfall days in June:
15.2 days
- Average rainfall days in July:
17 days - Average rainfall days in August:
15.1 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
11.4 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
9.5 days
The months with the highest number of rainy days are May and July (17 days).
The month with the least rainy days is January (7.3 days).
Average snowfall
Porters Mill, PA
The month with the highest snowfall is March (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Porters Mill, PA
- Average snowfall days in January:
5.8 days - Average snowfall days in February:
5.3 days - Average snowfall days in March:
4.5 days - Average snowfall days in April:
0.3 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:
2.7 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Porters Mill, 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 48min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 12min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 6min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Porters Mill, PA
- Average sunshine days in January:
18.7 days - Average sunshine days in February:
15.7 days - Average sunshine days in March:
15.2 days - Average sunshine days in April:
14 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
13.5 days
- Average sunshine days in July:
12.7 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
16.4 days - Average sunshine days in October:
18.1 days - Average sunshine days in November:
21 days - Average sunshine days in December:
19.4 days
The month with the most sunshine days is November (21 days).
The month with the least sunshine days is May (12.3 days).
Average UV index
Porters Mill, 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
Porters Mill, PA
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility
Porters Mill, 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).
