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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
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Atglen, Pennsylvania, with an average temperature varying between 23.4°F (-4.8°C) and 35.6°F (2°C). Temperature readings reach their annual highs in January, averaging 35.6°F (2°C) and a minimum average of 23.4°F (-4.8°C). Weather in January »
Weather in February
The last month of the winter, February, is also a wintry month in Atglen, Pennsylvania, with an average temperature fluctuating between 39.6°F (4.2°C) and 25.9°F (-3.4°C). Atglen starts February with an average high-temperature of a still icy 39.6°F (4.2°C), a minor shift from January's 35.6°F (2°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Atglen, Pennsylvania, with an average temperature varying between 33.1°F (0.6°C) and 48°F (8.9°C). March's arrival is noted with a slight increase in the average high-temperature, moving from an icy 39.6°F (4.2°C) in February to a chilly 48°F (8.9°C). Weather in March »
Weather in April
April is a moderate spring month in Atglen, Pennsylvania, with an average temperature fluctuating between 42.8°F (6°C) and 60.3°F (15.7°C). The start of April brings a shift in the average high-temperature, increasing from March's frosty 48°F (8.9°C) to a moderate 60.3°F (15.7°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Atglen, Pennsylvania, with an average temperature varying between 52.7°F (11.5°C) and 70.3°F (21.3°C). May brings a temperature change, with average high-temperatures moving from April's moderate 60.3°F (15.7°C) to an agreeable 70.3°F (21.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Atglen, Pennsylvania, with temperature in the range of an average low of 60.4°F (15.8°C) and an average high of 78.1°F (25.6°C). Atglen in June observes a minor temperature shift, with average high-temperatures adjusting from a pleasant 70.3°F (21.3°C) in May to a warm 78.1°F (25.6°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Atglen, Pennsylvania, with an average temperature fluctuating between 65.8°F (18.8°C) and 83.5°F (28.6°C). In Atglen, the average temperatures in July are the highest, with a peak at 83.5°F (28.6°C) and a low of 65.8°F (18.8°C). In July, the heat index is estimated at a tropical 91.4°F (33°C). Weather in July »
Weather in August
August, the last month of the summer in Atglen, is another warm month, with an average temperature ranging between max 81.1°F (27.3°C) and min 64.2°F (17.9°C). The advent of August reveals an average high-temperature of a still warm 81.1°F (27.3°C), showing minimal difference from the prior month. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Atglen, Pennsylvania, with an average temperature ranging between min 57.4°F (14.1°C) and max 74.8°F (23.8°C). As August makes way for September, Atglen's average high-temperature eases from a warm 81.1°F (27.3°C) to a still moderately hot 74.8°F (23.8°C). Weather in September »
Weather in October
October, like September, in Atglen, Pennsylvania, is another enjoyable autumn month, with an average temperature ranging between max 63°F (17.2°C) and min 48°F (8.9°C). October comes with a drop in the average high-temperature, falling from September's moderately hot 74.8°F (23.8°C) to a refreshing 63°F (17.2°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Atglen, Pennsylvania, with an average temperature varying between 50.9°F (10.5°C) and 36.9°F (2.7°C). With November's arrival, Atglen's weather changes as the average high-temperature falls from an enjoyable 63°F (17.2°C) in October to a cool 50.9°F (10.5°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Atglen, Pennsylvania, with an average temperature varying between 41.9°F (5.5°C) and 30.6°F (-0.8°C). The arrival of December corresponds with a temperature reduction, down from November's cool 50.9°F (10.5°C) to an icy 41.9°F (5.5°C). Weather in December »
Updated: Jun 4, 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 part of the year is the coldest?
Atglen's coldest month, January, registers temperatures that range from a high of 35.6°F (2°C) to a low of 23.4°F (-4.8°C).
How much does it rain?
In Atglen, during the entire year, the rain falls for 138.3 days and collects up to 19.76" (502mm) of precipitation.
When does it snow in Atglen?
Months with snowfall are January through May, October through December.
How many days does it snow?
In Atglen, during the entire year, snow falls for 19.6 days and aggregates up to 7.64" (194mm) of snow.
What is the month with the lowest UV index?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
What is the driest month?
The month with the least rainfall is February, when the rain falls for 6.9 days and typically collects 1.14" (29mm) of precipitation.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 4.5h of sunshine.
When does it snow the most?
March is the month with the most snowfall. Snow falls for 4.3 days and accumulates 2.32" (59mm) 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 is the least humid month?
April is the least humid month, with an average relative humidity of 76%.
What are the most humid months?
May and October, with an average relative humidity of 81%, are most humid months.
What are the months with the highest UV index?
May through August, with an average maximum UV index of 6, are months with the highest UV index.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
With an average of 15h and 0min of daylight, June has the longest days of the year in Atglen.
What is the hottest time of year?
July, noted for its average high-temperature of 83.5°F (28.6°C) and an average low-temperature of 65.8°F (18.8°C), is considered the warmest month.
What month has the most sunshine?
The month with the most sunshine is July, with an average of 10.4h of sunshine.
What is the wettest month?
August is the month with the most rainfall. Rain falls for 14.8 days and accumulates 2.72" (69mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days in Atglen is December, with an average of 9h and 24min of daylight.
Average temperature
Atglen, PA
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (35.6°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure
Atglen, 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:
30.13"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Atglen, PA
- Average wind speed in January:
8.8mph - Average wind speed in February:
8.8mph - Average wind speed in March:
8.8mph - Average wind speed in April:
8.6mph - Average wind speed in May:
6.6mph - Average wind speed in June:
6.2mph
- 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:
7.1mph - Average wind speed in November:
7.6mph - Average wind speed in December:
8.3mph
The windiest months (with the highest average wind speed) are January, February and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity
Atglen, PA
The months with the highest relative humidity are May and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall
Atglen, PA
- Average rainfall in January:
1.26" - Average rainfall in February:
1.14" - Average rainfall in March:
1.5" - Average rainfall in April:
1.61" - Average rainfall in May:
1.85" - Average rainfall in June:
1.89"
- Average rainfall in July:
2.17" - Average rainfall in August:
2.72" - Average rainfall in September:
1.38" - Average rainfall in October:
1.46" - Average rainfall in November:
1.26" - Average rainfall in December:
1.54"
The wettest month (with the highest rainfall) is August (2.72").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days
Atglen, PA
- Average rainfall days in January:
6.4 days - Average rainfall days in February:
6.9 days - Average rainfall days in March:
11.1 days - Average rainfall days in April:
13.1 days - Average rainfall days in May:
15.9 days - Average rainfall days in June:
14.9 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
7.7 days - Average rainfall days in December:
8.7 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (6.4 days).
Average snowfall
Atglen, PA
- Average snowfall in January:
1.65" - Average snowfall in February:
1.5" - Average snowfall in March:
2.32" - Average snowfall in April:
0.28" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is March (2.32").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Atglen, PA
- Average snowfall days in January:
5.8 days - Average snowfall days in February:
5.1 days - Average snowfall days in March:
4.3 days - Average snowfall days in April:
0.5 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 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 June, July, August and September (0 days).
Average daylight / Average sunshine
Atglen, 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 4min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 1min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 4min
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
Atglen, PA
- Average sunshine days in January:
18.8 days - Average sunshine days in February:
16 days - Average sunshine days in March:
15.6 days - Average sunshine days in April:
14.6 days - Average sunshine days in May:
13 days - Average sunshine days in June:
12.6 days
- Average sunshine days in July:
12.4 days - Average sunshine days in August:
13.2 days - Average sunshine days in September:
16.8 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
20 days - Average sunshine days in December:
19.3 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (12.4 days).
Average UV index
Atglen, 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
Atglen, PA
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility
Atglen, 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).