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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, like December, in Mainland, Pennsylvania, is another cold winter month, with an average temperature ranging between max 35.6°F (2°C) and min 23.5°F (-4.7°C). January is the coldest month, with an average high-temperature of 35.6°F (2°C) and an average low-temperature of 23.5°F (-4.7°C). Weather in January »
Weather in February
The last month of the winter, February, is also a wintry month in Mainland, Pennsylvania, with an average temperature fluctuating between 39.4°F (4.1°C) and 25.5°F (-3.6°C). The transition into February is marked with an average high-temperature of a still wintry 39.4°F (4.1°C), showing an insignificant shift from January's 35.6°F (2°C). Weather in February »
Weather in March
March, the first month of the spring in Mainland, is a chilly month, with temperature in the range of an average low of 32.9°F (0.5°C) and an average high of 48.2°F (9°C). As Mainland transitions into March, a marginal rise in the average high-temperature is observed, moving from an icy 39.4°F (4.1°C) in February to a frosty 48.2°F (9°C). Weather in March »
Weather in April
April in Mainland, Pennsylvania, is a moderate spring month, with an average temperature fluctuating between 43.2°F (6.2°C) and 60.4°F (15.8°C). The arrival of April sees a shift in the average high-temperature, moving from a frosty 48.2°F (9°C) in March to a mild 60.4°F (15.8°C). Weather in April »
Weather in May
May, the last month of the spring in Mainland, is an agreeable month, with an average temperature varying between 53.2°F (11.8°C) and 71.2°F (21.8°C). The arrival of May brings an increase in high-temperatures, moving from a refreshing 60.4°F (15.8°C) in April to an agreeable 71.2°F (21.8°C). Weather in May »
Weather in June
June, the first month of the summer in Mainland, is a moderately hot month, with an average temperature ranging between min 60.8°F (16°C) and max 79.3°F (26.3°C). Mainland in June denotes a subtle temperature transition, adjusting from an average high of a pleasant 71.2°F (21.8°C) in May to a moderately hot 79.3°F (26.3°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Mainland, Pennsylvania, with temperature in the range of an average high of 85.3°F (29.6°C) and an average low of 66.9°F (19.4°C). Mainland's warmest month, July, generally records average temperatures ranging from a high of 85.3°F (29.6°C) to a low of 66.9°F (19.4°C). In July, the average heat index is evaluated at a torrid 95°F (35°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Mainland, Pennsylvania, with an average temperature varying between 82.8°F (28.2°C) and 65.3°F (18.5°C). The average high-temperature in August, at a still warm 82.8°F (28.2°C), reveals a modest deviation from July's 85.3°F (29.6°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Mainland, Pennsylvania, with temperature in the range of an average high of 75.9°F (24.4°C) and an average low of 58.3°F (14.6°C). September implies a soft temperature shift, with average high-temperatures reducing from August's 82.8°F (28.2°C) to a still warm 75.9°F (24.4°C). Weather in September »
Weather in October
October, like September, in Mainland, Pennsylvania, is another comfortable autumn month, with an average temperature ranging between max 63.5°F (17.5°C) and min 48.2°F (9°C). Welcoming October, Mainland observes a shift in the average high-temperature, falling from September's moderately hot 75.9°F (24.4°C) to a comfortable 63.5°F (17.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Mainland, Pennsylvania, with an average temperature varying between 37.2°F (2.9°C) and 51.3°F (10.7°C). Arrival of November comes with a reduction in the average high-temperature, falling from a comfortable 63.5°F (17.5°C) in October to a cool 51.3°F (10.7°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Mainland, Pennsylvania, with an average temperature ranging between max 42.1°F (5.6°C) and min 30.7°F (-0.7°C). Mainland in December undergoes a mild reduction in the average high-temperature, shifting from November's cool 51.3°F (10.7°C) to an icy 42.1°F (5.6°C). Weather in December »
Updated: Jun 8, 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
What time of the year is the coldest?
Mainland's coldest weather arrives in January, when temperatures average a high of 35.6°F (2°C) and a low of 23.5°F (-4.7°C).
How much does it rain?
In Mainland, during the entire year, the rain falls for 116.6 days and collects up to 10.63" (270mm) of precipitation.
When does it snow?
Months with snowfall are January through May, November and December.
How much does it snow?
Throughout the year, there are 14.8 snowfall days, and 3.5" (89mm) of snow is accumulated.
What is the month with the lowest UV index?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the most humid month?
February, October and December, with an average relative humidity of 79%, are most humid months.
What is the month with the least sunshine?
With an average of 4.7h of sunshine, February has the least sunshine of the year.
What is the snowiest month?
March is the month with the most snowfall. Snow falls for 3.3 days and accumulates 1.02" (26mm) of snow.
When is Daylight Saving Time (DST)?
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.
What are the least humid months?
The months with the lowest humidity are April, July and August, with an average relative humidity of 73%.
What are the months with the highest UV index?
The months with the highest UV index are May through August, with an average maximum UV index of 6.
When it does not snow in Mainland?
In Mainland, snow does not fall in June through October.
When are the longest days?
June has the longest days of the year, with an average of 15h and 0min of daylight.
What are the warmest months?
The warmest month is July, with an average high-temperature of 85.3°F (29.6°C) and an average low-temperature of 66.9°F (19.4°C).
What is the rainiest month?
July is the month with the most rainfall. Rain falls for 13.8 days and accumulates 1.3" (33mm) of precipitation.
What month has the most sunshine?
The month with the most sunshine is July, with an average of 10.7h of sunshine.
What is the driest month?
The month with the least rainfall in Mainland is September, when the rain falls for 9.4 days and typically collects 0.59" (15mm) of precipitation.
What is the month with the shortest days in Mainland?
December has the shortest days of the year, with an average of 9h and 24min of daylight.
Average temperature
Mainland, PA
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (35.6°F).
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure
Mainland, PA
- Average pressure in January:
30.08"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:
30.09"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
Mainland, PA
- Average wind speed in January:
8mph - Average wind speed in February:
7.9mph - Average wind speed in March:
8.3mph - Average wind speed in April:
8.1mph - Average wind speed in May:
6.5mph - Average wind speed in June:
6.1mph
- Average wind speed in July:
5.3mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.7mph - Average wind speed in October:
6.6mph - Average wind speed in November:
7mph - Average wind speed in December:
7.5mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity
Mainland, PA
The months with the highest relative humidity are February, October and December (79%).
The months with the lowest relative humidity are April, July and August (73%).
Average rainfall
Mainland, PA
- Average rainfall in January:
0.63" - Average rainfall in February:
0.63" - Average rainfall in March:
0.87" - Average rainfall in April:
0.71" - Average rainfall in May:
1.02" - Average rainfall in June:
1.02"
- Average rainfall in July:
1.3" - Average rainfall in August:
1.26" - Average rainfall in September:
0.59" - Average rainfall in October:
0.79" - Average rainfall in November:
0.79" - Average rainfall in December:
1.02"
The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is September (0.59").
Average rainfall days
Mainland, PA
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
6.3 days - Average rainfall days in March:
9.4 days - Average rainfall days in April:
10.7 days - Average rainfall days in May:
13.1 days - Average rainfall days in June:
12.5 days
- Average rainfall days in July:
13.8 days - Average rainfall days in August:
12.4 days - Average rainfall days in September:
9.4 days - Average rainfall days in October:
8.8 days - Average rainfall days in November:
6.6 days - Average rainfall days in December:
7.3 days
The month with the highest number of rainy days is July (13.8 days).
The months with the least rainy days are January and February (6.3 days).
Average snowfall
Mainland, PA
- Average snowfall in January:
0.71" - Average snowfall in February:
0.79" - Average snowfall in March:
1.02" - Average snowfall in April:
0.12" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is March (1.02").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Mainland, PA
- Average snowfall days in January:
4.6 days - Average snowfall days in February:
4.2 days - Average snowfall days in March:
3.3 days - Average snowfall days in April:
0.3 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:
1.8 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Mainland, 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 5min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 4min - Average sunshine in April:
8h and 2min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 4min - 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 42min).
Average sunshine days
Mainland, PA
- Average sunshine days in January:
21.4 days - Average sunshine days in February:
18.3 days - Average sunshine days in March:
17.9 days - Average sunshine days in April:
17.3 days - Average sunshine days in May:
15.7 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
13.9 days - Average sunshine days in August:
15.5 days - Average sunshine days in September:
17.9 days - Average sunshine days in October:
20.5 days - Average sunshine days in November:
22.3 days - Average sunshine days in December:
21.7 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is July (13.9 days).
Average UV index
Mainland, 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
Mainland, 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
Mainland, 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).
Mainland, Pennsylvania, USA
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