Climate and monthly weather forecastLower Allen, PA
Climate and monthly weather forecast
Weather in January
January, like December, in Lower Allen, Pennsylvania, is another cold winter month, with an average temperature ranging between min 22.3°F (-5.4°C) and max 35.2°F (1.8°C). January, marked by an average high-temperature of 35.2°F (1.8°C) and a low-temperature of 22.3°F (-5.4°C), is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is also an icy month in Lower Allen, Pennsylvania, with an average temperature varying between 24.3°F (-4.3°C) and 38.7°F (3.7°C). With the transition into February, Lower Allen notes an average high-temperature of a still cold 38.7°F (3.7°C), closely resembling January. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Lower Allen, Pennsylvania, with an average temperature ranging between min 31.6°F (-0.2°C) and max 47.8°F (8.8°C). An escalation in the average high-temperature is seen with the onset of March, moving from a cold 38.7°F (3.7°C) in February to a chilly 47.8°F (8.8°C). Weather in March »Weather in April
April is a refreshing spring month in Lower Allen, Pennsylvania, with temperature in the range of an average high of 59.9°F (15.5°C) and an average low of 41.7°F (5.4°C). April brings a temperature increase, with average high-temperatures moving from March's chilly 47.8°F (8.8°C) to a refreshing 59.9°F (15.5°C). Weather in April »Weather in May
May, the last month of the spring in Lower Allen, is a pleasant month, with an average temperature fluctuating between 51.8°F (11°C) and 70.2°F (21.2°C). Lower Allen in May shows a temperature shift, moving from an average high of a moderate 59.9°F (15.5°C) in April to a pleasant 70.2°F (21.2°C). Weather in May »Weather in June
June, the first month of the summer in Lower Allen, is a moderately hot month, with an average temperature varying between 78.1°F (25.6°C) and 58.8°F (14.9°C). As May transitions into June, Lower Allen notices a gentle rise in the average high-temperature, transitioning from a pleasant 70.2°F (21.2°C) to a moderately hot 78.1°F (25.6°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Lower Allen, Pennsylvania, with an average temperature varying between 83.7°F (28.7°C) and 64°F (17.8°C). The highest temperatures are recorded in July, with averages reaching a high of 83.7°F (28.7°C) and a low of 64°F (17.8°C). The heat index value for July is estimated at a hot 91.4°F (33°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Lower Allen, Pennsylvania, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 62.2°F (16.8°C). August begins with an average high-temperature of a still moderately hot 81.1°F (27.3°C), reflecting close similarity to the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Lower Allen, is also a moderately hot month, with an average temperature ranging between max 74.3°F (23.5°C) and min 55.8°F (13.2°C). The beginning of September brings a minor change in the average high-temperature, shifting from 81.1°F (27.3°C) in August to a still warm 74.3°F (23.5°C). Weather in September »Weather in October
October, like September, in Lower Allen, Pennsylvania, is another refreshing autumn month, with temperature in the range of an average high of 62.8°F (17.1°C) and an average low of 46.8°F (8.2°C). Welcoming October, Lower Allen observes a shift in the average high-temperature, falling from September's moderately hot 74.3°F (23.5°C) to an enjoyable 62.8°F (17.1°C). Weather in October »Weather in November
November, the last month of the autumn in Lower Allen, is another cool month, with an average temperature fluctuating between 50.2°F (10.1°C) and 35.2°F (1.8°C). November's onset corresponds with a shift in the average high-temperature, moving from an enjoyable 62.8°F (17.1°C) in October to a cool 50.2°F (10.1°C). Weather in November »Weather in December
December, the first month of the winter in Lower Allen, is also an icy month, with an average temperature fluctuating between 29.8°F (-1.2°C) and 41.2°F (5.1°C). The start of December signals a decrease in the average high-temperature, transitioning from a cool 50.2°F (10.1°C) in November to a cold 41.2°F (5.1°C). Weather in December »Updated: Jul 20, 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
The coldest temperatures occur during January, when averages reach a peak of 35.2°F (1.8°C) and a low of 22.3°F (-5.4°C).
The months with the least rainfall are January and September Rain falls for 7.3 days and accumulates 1.3" (33mm) of rain.
In Lower Allen, Pennsylvania, during the entire year, the rain falls for 146 days and collects up to 19.53" (496mm) of precipitation.
Months with snowfall are January through April, November and December.
January is the month with the most snowfall. Snow falls for 7.1 days and accumulates 2.4" (61mm) of snow.
Throughout the year, there are 23.2 snowfall days, and 8.39" (213mm) of snow is accumulated.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The months with the highest humidity are February and May, with an average relative humidity of 80%.
With an average of 4.5h of sunshine, February has the least sunshine of the year.
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 least humid month is April, with an average relative humidity of 75%.
The months with the most rainfall are May and August, with an average 2.09" (53mm) of precipitation.
In Lower Allen, snow does not fall in May through October.
May through July, with an average maximum UV index of 6, are months with the highest UV index.
The month with the longest days is June, with an average of 15h and 0min of daylight.
With its average high temperature of 83.7°F (28.7°C) and a low of 64°F (17.8°C), July is regarded as the warmest month.
The month with the most sunshine is July, with an average of 10.6h of sunshine.
With an average of 9h and 24min of daylight, December has the shortest days of the year.
Average temperature
Lower Allen, PA
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.2°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure
Lower Allen, 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:
30.1"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
Lower Allen, PA
- Average wind speed in January:
8.2mph - Average wind speed in February:
8.3mph - Average wind speed in March:
8.4mph - Average wind speed in April:
8.3mph - Average wind speed in May:
6.4mph - Average wind speed in June:
5.9mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.4mph - Average wind speed in October:
6.8mph - Average wind speed in November:
7.2mph - Average wind speed in December:
7.8mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
Lower Allen, PA
The months with the highest relative humidity are February and May (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall
Lower Allen, PA
- Average rainfall in January:
1.3" - Average rainfall in February:
1.38" - Average rainfall in March:
1.42" - Average rainfall in April:
1.65" - Average rainfall in May:
2.09" - Average rainfall in June:
1.73"
- Average rainfall in July:
2.05" - Average rainfall in August:
2.09" - Average rainfall in September:
1.3" - Average rainfall in October:
1.73" - Average rainfall in November:
1.42" - Average rainfall in December:
1.38"
The wettest months (with the highest rainfall) are May and August (2.09").
The driest months (with the least rainfall) are January and September (1.3").
Average rainfall days
Lower Allen, PA
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
8.7 days - Average rainfall days in March:
11.4 days - Average rainfall days in April:
15.7 days - Average rainfall days in May:
17 days - Average rainfall days in June:
15 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
14.3 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
11.4 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (7.3 days).
Average snowfall
Lower Allen, PA
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Lower Allen, PA
- Average snowfall days in January:
7.1 days - Average snowfall days in February:
6.2 days - Average snowfall days in March:
4.5 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:
4.5 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Lower Allen, 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 42min - Average sunshine in February:
4h and 30min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 18min - Average sunshine in May:
8h and 30min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 6min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 42min
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 30min).
Average sunshine days
Lower Allen, PA
- Average sunshine days in January:
18 days - Average sunshine days in February:
14.8 days - Average sunshine days in March:
15 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
12 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
14.6 days - Average sunshine days in September:
16.7 days - Average sunshine days in October:
17 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
17.5 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (12 days).
Average UV index
Lower Allen, PA
The months with the highest UV index are May, 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
Lower Allen, PA
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility
Lower Allen, 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).
