Climate and monthly weather forecastArlington Knolls, PA
Climate and monthly weather forecast
Weather in January
January, like December, in Arlington Knolls, Pennsylvania, is a wintry winter month, with an average temperature fluctuating between 33.8°F (1°C) and 21.6°F (-5.8°C). January is the month that records the lowest temperatures, with averages ranging from a high of 33.8°F (1°C) to a low of 21.6°F (-5.8°C). Weather in January »Weather in February
February, the last month of the winter in Arlington Knolls, is also an icy month, with an average temperature fluctuating between 23.4°F (-4.8°C) and 37.4°F (3°C). Arlington Knolls ushers in February with an average high-temperature of a still icy 37.4°F (3°C), showing a close resemblance to the previous month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Arlington Knolls, Pennsylvania, with temperature in the range of an average high of 46°F (7.8°C) and an average low of 30°F (-1.1°C). In Arlington Knolls, the average high-temperature in March slightly increases from a cold 37.4°F (3°C) in February to a frosty 46°F (7.8°C). Weather in March »Weather in April
April in Arlington Knolls, Pennsylvania, is a moderate spring month, with an average temperature varying between 40.5°F (4.7°C) and 58.5°F (14.7°C). April sees a rise in the average high-temperature, climbing from a frosty 46°F (7.8°C) in March to a mild 58.5°F (14.7°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Arlington Knolls, Pennsylvania, with an average temperature ranging between max 69.4°F (20.8°C) and min 50.2°F (10.1°C). With the onset of May, Arlington Knolls's weather sees a temperature rise, transitioning from a mild 58.5°F (14.7°C) in April to an agreeable 69.4°F (20.8°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Arlington Knolls, Pennsylvania, with an average temperature ranging between min 57.7°F (14.3°C) and max 77.4°F (25.2°C). With the transition into June, Arlington Knolls experiences a subtle uplift in average high-temperatures, adjusting from an agreeable 69.4°F (20.8°C) in May to a warm 77.4°F (25.2°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Arlington Knolls, Pennsylvania, with an average temperature ranging between max 83.3°F (28.5°C) and min 63.3°F (17.4°C). July, recognised by an average high temperature of 83.3°F (28.5°C) and a low of 63.3°F (17.4°C), is Arlington Knolls's warmest month. July's heat index is calculated to be a tropical 91.4°F (33°C). Weather in July »Weather in August
August, the last month of the summer in Arlington Knolls, is also a moderately hot month, with temperature in the range of an average low of 61.5°F (16.4°C) and an average high of 81°F (27.2°C). With August's arrival, Arlington Knolls's weather records an average high-temperature of a still warm 81°F (27.2°C), marking little difference from July's 83.3°F (28.5°C). Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Arlington Knolls, Pennsylvania, with an average temperature ranging between max 74.1°F (23.4°C) and min 55°F (12.8°C). As September arrives, Arlington Knolls's weather displays a minor decrease in high-temperatures, transitioning from August's 81°F (27.2°C) to a still moderately hot 74.1°F (23.4°C). Weather in September »Weather in October
October, like September, in Arlington Knolls, Pennsylvania, is another comfortable autumn month, with temperature in the range of an average low of 45.9°F (7.7°C) and an average high of 61.9°F (16.6°C). Welcoming October, Arlington Knolls observes a shift in the average high-temperature, falling from September's moderately hot 74.1°F (23.4°C) to an enjoyable 61.9°F (16.6°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Arlington Knolls, Pennsylvania, with temperature in the range of an average high of 49.1°F (9.5°C) and an average low of 34.9°F (1.6°C). Arlington Knolls's weather changes with the onset of November, slightly falling from an enjoyable 61.9°F (16.6°C) in October to a frosty 49.1°F (9.5°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Arlington Knolls, Pennsylvania, with temperature in the range of an average low of 28.9°F (-1.7°C) and an average high of 40.1°F (4.5°C). December weather is marked by a drop in the average high-temperature, falling from a chilly 49.1°F (9.5°C) in November to a wintry 40.1°F (4.5°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Arlington Knolls, PA
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.8°F).
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure
Arlington Knolls, 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:
29.99"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
Arlington Knolls, PA
- Average wind speed in January:
8.1mph - Average wind speed in February:
7.9mph - Average wind speed in March:
8.1mph - Average wind speed in April:
7.9mph - Average wind speed in May:
6.2mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.8mph - Average wind speed in November:
7.1mph - Average wind speed in December:
7.6mph
The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity
Arlington Knolls, PA
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall
Arlington Knolls, PA
- Average rainfall in January:
2.32" - Average rainfall in February:
2.2" - Average rainfall in March:
2.6" - Average rainfall in April:
2.87" - Average rainfall in May:
2.91" - Average rainfall in June:
2.6"
- Average rainfall in July:
3.19" - Average rainfall in August:
2.99" - Average rainfall in September:
1.93" - Average rainfall in October:
2.72" - Average rainfall in November:
2.48" - Average rainfall in December:
2.87"
The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days
Arlington Knolls, PA
- Average rainfall days in January:
9.9 days - Average rainfall days in February:
10.2 days - Average rainfall days in March:
13.6 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
17.2 days - Average rainfall days in June:
15.9 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
16 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
13.4 days - Average rainfall days in November:
11 days - Average rainfall days in December:
12.1 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (9.9 days).
Average snowfall
Arlington Knolls, PA
- Average snowfall in January:
3.94" - Average snowfall in February:
4.29" - Average snowfall in March:
4.88" - Average snowfall in April:
0.2" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is March (4.88").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Arlington Knolls, PA
- Average snowfall days in January:
9.2 days - Average snowfall days in February:
9.7 days - Average snowfall days in March:
6.3 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:
0.1 days - Average snowfall days in November:
1.1 days - Average snowfall days in December:
5.5 days
The month with the highest number of snowfall days is February (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Arlington Knolls, 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 30min - 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 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 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 42min - Average sunshine in February:
4h and 30min - Average sunshine in March:
6h and 12min - Average sunshine in April:
7h and 54min - Average sunshine in May:
8h and 12min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
9h and 54min - Average sunshine in September:
8h and 48min - 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days
Arlington Knolls, PA
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
11.7 days - Average sunshine days in March:
12.6 days - Average sunshine days in April:
12.6 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
12.5 days
- Average sunshine days in July:
12.4 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
15.6 days - Average sunshine days in November:
17.3 days - Average sunshine days in December:
15.7 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is February (11.7 days).
Average UV index
Arlington Knolls, PA
The months with the highest UV index are 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
Arlington Knolls, PA
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility
Arlington Knolls, PA
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).





