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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, the same as December, is an icy winter month in Mount Gretna, Pennsylvania, with an average temperature ranging between min 21.6°F (-5.8°C) and max 33.8°F (1°C). In Mount Gretna, January is the month with the lowest recorded average temperatures, measuring a high of 33.8°F (1°C) and a low of 21.6°F (-5.8°C). Weather in January »
Weather in February
The last month of the winter, February, is also a wintry month in Mount Gretna, Pennsylvania, with temperature in the range of an average low of 23.5°F (-4.7°C) and an average high of 37.9°F (3.3°C). Mount Gretna registers an average high-temperature of a still icy 37.9°F (3.3°C) with the arrival of February, showing minor deviation from the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Mount Gretna, Pennsylvania, with temperature in the range of an average low of 31.1°F (-0.5°C) and an average high of 46.9°F (8.3°C). Mount Gretna's transition into March is marked by a rise in the average high-temperature, advancing from a wintry 37.9°F (3.3°C) in February to a chilly 46.9°F (8.3°C). Weather in March »
Weather in April
April in Mount Gretna, Pennsylvania, is a mild spring month, with an average temperature ranging between max 59.4°F (15.2°C) and min 41.4°F (5.2°C). The shift from March to April sees an increase in the average high-temperature, transitioning from a chilly 46.9°F (8.3°C) to a moderate 59.4°F (15.2°C). Weather in April »
Weather in May
May, the last month of the spring in Mount Gretna, is an agreeable month, with an average temperature ranging between max 68.7°F (20.4°C) and min 51.1°F (10.6°C). May shows a rise in the average high-temperature, moving from April's refreshing 59.4°F (15.2°C) to an agreeable 68.7°F (20.4°C). Weather in May »
Weather in June
June, the first month of the summer in Mount Gretna, is a moderately hot month, with an average temperature fluctuating between 76.6°F (24.8°C) and 58.6°F (14.8°C). The shift from May to June sees a slight increase in the average high-temperature, transitioning from an agreeable 68.7°F (20.4°C) to a moderately hot 76.6°F (24.8°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Mount Gretna, Pennsylvania, with temperature in the range of an average high of 82°F (27.8°C) and an average low of 63.1°F (17.3°C). Mount Gretna's July weather reaches an average high of 82°F (27.8°C) and an average low of 63.1°F (17.3°C), making it the warmest month. July's heat index is calculated to be a tropical 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Mount Gretna, is another warm month, with temperature in the range of an average low of 61.7°F (16.5°C) and an average high of 79.9°F (26.6°C). The transition from July to August sees average high-temperatures adjusting to a still moderately hot 79.9°F (26.6°C), from a not significantly different 82°F (27.8°C). Weather in August »
Weather in September
September, the first month of the autumn in Mount Gretna, is still a warm month, with an average temperature fluctuating between 55.4°F (13°C) and 73.8°F (23.2°C). Start of September brings a slight shift in the average high-temperature, dipping a bit from August's 79.9°F (26.6°C) to a still moderately hot 73.8°F (23.2°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Mount Gretna, Pennsylvania, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 61.7°F (16.5°C). The decrease of average high-temperatures is mild in October, with a decline from a moderately hot 73.8°F (23.2°C) in September to a refreshing 61.7°F (16.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Mount Gretna, Pennsylvania, with an average temperature fluctuating between 34.9°F (1.6°C) and 49.5°F (9.7°C). In November, the meteorological conditions alter, with the average high-temperature shifting from a comfortable 61.7°F (16.5°C) in October to a chilly 49.5°F (9.7°C). Weather in November »
Weather in December
December, the first month of the winter in Mount Gretna, is also an icy month, with an average temperature fluctuating between 29.3°F (-1.5°C) and 40.3°F (4.6°C). Mount Gretna in December demonstrates a small temperature transition, adjusting from an average high of a frosty 49.5°F (9.7°C) in November to a wintry 40.3°F (4.6°C). Weather in December »
[Resources]Frequently asked questions
What month is the coldest in Mount Gretna?
Mount Gretna's January weather, marked by an average high temperature of 33.8°F (1°C) and an average low temperature of 21.6°F (-5.8°C), is the coldest in the year.
How many days does it rain in Mount Gretna?
In Mount Gretna, during the entire year, the rain falls for 137.4 days and collects up to 16.26" (413mm) of precipitation.
When does it snow in Mount Gretna?
January through May, October through December are months with snowfall in Mount Gretna.
What is the snowiest month in Mount Gretna?
The month with the most snowfall is January, when snow falls for 5.2 days and typically aggregates up to 1.97" (50mm) of snow.
How much does it snow in Mount Gretna?
In Mount Gretna, Pennsylvania, during the entire year, snow falls for 19.5 days and aggregates up to 6.69" (170mm) of snow.
What are the months with the lowest UV index in Mount Gretna?
The months with the lowest UV index in Mount Gretna, Pennsylvania, are January through March, November and December, with an average maximum UV index of 2.
What are the most humid months in Mount Gretna?
The months with the highest humidity in Mount Gretna are February, May and October, with an average relative humidity of 81%.
What is the driest month in Mount Gretna?
The month with the least rainfall is February, when the rain falls for 7.8 days and typically collects 0.94" (24mm) of precipitation.
What is the month with the least sunshine in Mount Gretna?
February has the least sunshine of the year, with an average of 4.5h of sunshine.
When is Daylight Saving Time (DST) in Mount Gretna?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Mount Gretna, 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 in Mount Gretna?
The least humid month is April, with an average relative humidity of 76%.
When is the highest UV index in Mount Gretna?
The months with the highest UV index are May through July, with an average maximum UV index of 6.
When it does not snow in Mount Gretna?
June through September are months without snowfall.
When are the longest days in Mount Gretna?
June has the longest days of the year, with an average of 15h and 0min of daylight.
What is the warmest month in Mount Gretna?
With its average high temperature of 82°F (27.8°C) and a low of 63.1°F (17.3°C), July is regarded as the warmest month.
What month has the most sunshine in Mount Gretna?
The month with the most sunshine is July, with an average of 10.4h of sunshine.
What is the wettest month in Mount Gretna?
The month with the most rainfall is August, when the rain falls for 14.7 days and typically aggregates up to 2.13" (54mm) of precipitation.
What is the month with the shortest days in Mount Gretna?
December has the shortest days of the year in Mount Gretna, Pennsylvania, with an average of 9h and 24min of daylight.
Average temperature
Mount Gretna, PA
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.8°F).
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure
Mount Gretna, PA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"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:
29.94"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:
30.03"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
Mount Gretna, PA
- Average wind speed in January:
8.5mph - Average wind speed in February:
8.6mph - 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:
6.1mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
Mount Gretna, PA
The months with the highest relative humidity are February, May and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall
Mount Gretna, PA
- Average rainfall in January:
1.06" - Average rainfall in February:
0.94" - Average rainfall in March:
1.18" - Average rainfall in April:
1.26" - Average rainfall in May:
1.61" - Average rainfall in June:
1.38"
- Average rainfall in July:
1.93" - Average rainfall in August:
2.13" - Average rainfall in September:
1.02" - Average rainfall in October:
1.42" - Average rainfall in November:
1.22" - Average rainfall in December:
1.1"
The wettest month (with the highest rainfall) is August (2.13").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days
Mount Gretna, PA
- Average rainfall days in January:
6.7 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
10.9 days - Average rainfall days in April:
12.7 days - Average rainfall days in May:
15.9 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
15.6 days - Average rainfall days in August:
14.7 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
11.4 days - Average rainfall days in November:
7.2 days - Average rainfall days in December:
9.2 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.7 days).
Average snowfall
Mount Gretna, PA
- Average snowfall in January:
1.97" - Average snowfall in February:
1.5" - Average snowfall in March:
1.65" - Average snowfall in April:
0.04" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is January (1.97").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Mount Gretna, PA
- Average snowfall days in January:
5.2 days - Average snowfall days in February:
5.1 days - Average snowfall days in March:
4.2 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0.2 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:
3.3 days
The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Mount Gretna, 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 5min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 2min - 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
Mount Gretna, PA
- Average sunshine days in January:
20.3 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
15.3 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
11.8 days - Average sunshine days in August:
13.4 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
18.7 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (11.5 days).
Average UV index
Mount Gretna, 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
Mount Gretna, PA
The months with the most cloud cover are February and December (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility
Mount Gretna, PA
The months with the highest visibility are January, February, March, April, June, July, November and December (6mi).
The months with the lowest visibility are May, August, September and October (5mi).
Mount Gretna, Pennsylvania, USA
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