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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 Mount Joy, Pennsylvania, is a wintry winter month, with an average temperature fluctuating between 22.5°F (-5.3°C) and 35.1°F (1.7°C). The month of January, characterized by an average high of 35.1°F (1.7°C) and a low of 22.5°F (-5.3°C), is recognized as the coldest. Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Mount Joy, Pennsylvania, with an average temperature varying between 24.3°F (-4.3°C) and 38.5°F (3.6°C). Mount Joy, Pennsylvania, experiences a subtle adjustment in high-temperatures to a still cold 38.5°F (3.6°C) with the onset of February, maintaining near parity with January's 35.1°F (1.7°C). Weather in February »
Weather in March
March, the first month of the spring in Mount Joy, is a chilly month, with an average temperature ranging between min 31.8°F (-0.1°C) and max 47.5°F (8.6°C). March's arrival brings a temperature shift, moving from a wintry 38.5°F (3.6°C) in February to a frosty 47.5°F (8.6°C). Weather in March »
Weather in April
April in Mount Joy, Pennsylvania, is a moderate spring month, with an average temperature fluctuating between 42.1°F (5.6°C) and 59.9°F (15.5°C). Entering April, Mount Joy sees a temperature rise, with the average high-temperature advancing from March's chilly 47.5°F (8.6°C) to a mild 59.9°F (15.5°C). Weather in April »
Weather in May
May, the last month of the spring in Mount Joy, is a pleasant month, with an average temperature ranging between min 52°F (11.1°C) and max 70°F (21.1°C). May marks a rise in the average high-temperature, moving from April's refreshing 59.9°F (15.5°C) to an agreeable 70°F (21.1°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Mount Joy, Pennsylvania, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 59.2°F (15.1°C). With the transition into June, Mount Joy experiences a subtle uplift in average high-temperatures, adjusting from an agreeable 70°F (21.1°C) in May to a moderately hot 77.5°F (25.3°C). Weather in June »
Weather in July
July, like June, in Mount Joy, Pennsylvania, is another warm summer month, with an average temperature ranging between max 82.8°F (28.2°C) and min 64°F (17.8°C). Mount Joy witnesses the warmest weather in July, with temperatures averaging a high of 82.8°F (28.2°C) and a low of 64°F (17.8°C). The heat index value during July is estimated at a hot 89.6°F (32°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Mount Joy, Pennsylvania, with an average temperature varying between 80.8°F (27.1°C) and 62.1°F (16.7°C). Mount Joy marks the onset of August with an average high-temperature of a still warm 80.8°F (27.1°C), a subtle shift from July's 82.8°F (28.2°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Mount Joy, Pennsylvania, with an average temperature ranging between max 74.3°F (23.5°C) and min 55.8°F (13.2°C). September's arrival subtly correlates with a reduction in the average high-temperature, down from 80.8°F (27.1°C) in August to a still warm 74.3°F (23.5°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Mount Joy, Pennsylvania, with temperature in the range of an average low of 46.6°F (8.1°C) and an average high of 62.8°F (17.1°C). As September transitions to October, the average high-temperature falls from a warm 74.3°F (23.5°C) to a comfortable 62.8°F (17.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Mount Joy, Pennsylvania, with an average temperature fluctuating between 50.2°F (10.1°C) and 35.8°F (2.1°C). The start of November signals a decrease in the average high-temperature, transitioning from a comfortable 62.8°F (17.1°C) in October to a fresh 50.2°F (10.1°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Mount Joy, Pennsylvania, with temperature in the range of an average high of 41.2°F (5.1°C) and an average low of 30°F (-1.1°C). With December's arrival, Mount Joy's weather changes as the average high-temperature falls from a fresh 50.2°F (10.1°C) in November to an icy 41.2°F (5.1°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 is the coldest time of year?
The coldest period tends to be January, when average temperatures fluctuate between a high of 35.1°F (1.7°C) and a low of 22.5°F (-5.3°C).
How much does it rain in Mount Joy?
Throughout the year, there are 132.7 rainfall days, and 15.35" (390mm) of precipitation is accumulated.
When does it snow?
January through April, October through December are months with snowfall.
When does it snow the most?
The month with the most snowfall is January, when snow falls for 5.7 days and typically aggregates up to 2.13" (54mm) of snow.
How much does it snow?
In Mount Joy, during the entire year, snow falls for 19.3 days and aggregates up to 6.5" (165mm) of snow.
When is the lowest UV index?
The months with the lowest UV index in Mount Joy are January through March, November and December, with an average maximum UV index of 2.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 4.5h of sunshine.
What are the least humid months?
March and April, with an average relative humidity of 76%, are the least humid months.
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 most humid month?
The most humid month is May, with an average relative humidity of 81%.
When it does not snow in Mount Joy?
In Mount Joy, Pennsylvania, snow does not fall in May through September.
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 months with the highest UV index?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What is the hottest time of year?
With average high temperatures of 82.8°F (28.2°C) and lows of 64°F (17.8°C), July is the warmest month.
What month has the most sunshine?
July has the most sunshine of the year, with an average of 10.6h of sunshine.
What is the rainiest month?
August is the month with the most rainfall. Rain falls for 15 days and accumulates 1.97" (50mm) of precipitation.
What is the driest month?
The month with the least rainfall is September, when the rain falls for 10.4 days and typically collects 0.91" (23mm) of precipitation.
What is the month with the shortest days?
With an average of 9h and 24min of daylight, December has the shortest days of the year.
Average temperature
Mount Joy, PA
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (35.1°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure
Mount Joy, PA
- Average pressure in January:
30.1"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:
30.04"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 Joy, PA
- Average wind speed in January:
8.6mph - Average wind speed in February:
8.7mph - 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
- Average wind speed in July:
5mph - Average wind speed in August:
4.9mph - Average wind speed in September:
5.6mph - Average wind speed in October:
7mph - Average wind speed in November:
7.5mph - Average wind speed in December:
8.1mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity
Mount Joy, PA
The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are March and April (76%).
Average rainfall
Mount Joy, PA
- Average rainfall in January:
0.98" - Average rainfall in February:
0.94" - Average rainfall in March:
1.1" - Average rainfall in April:
1.1" - Average rainfall in May:
1.5" - Average rainfall in June:
1.38"
- Average rainfall in July:
1.77" - Average rainfall in August:
1.97" - Average rainfall in September:
0.91" - Average rainfall in October:
1.42" - Average rainfall in November:
1.18" - Average rainfall in December:
1.1"
The wettest month (with the highest rainfall) is August (1.97").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days
Mount Joy, PA
- Average rainfall days in January:
6.6 days - Average rainfall days in February:
6.9 days - Average rainfall days in March:
10.7 days - Average rainfall days in April:
12.6 days - Average rainfall days in May:
15.7 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
15 days - Average rainfall days in September:
10.4 days - Average rainfall days in October:
10 days - Average rainfall days in November:
6.6 days - Average rainfall days in December:
8.6 days
The month with the highest number of rainy days is May (15.7 days).
The months with the least rainy days are January and November (6.6 days).
Average snowfall
Mount Joy, PA
The month with the highest snowfall is January (2.13").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Mount Joy, PA
- Average snowfall days in January:
5.7 days - Average snowfall days in February:
5.1 days - Average snowfall days in March:
4 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:
0.6 days - Average snowfall days in December:
3.4 days
The month with the highest number of snowfall days is January (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Mount Joy, 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 3min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
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
Mount Joy, PA
- Average sunshine days in January:
20.2 days - Average sunshine days in February:
16.4 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
15.4 days - Average sunshine days in May:
12.6 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
11.8 days - Average sunshine days in August:
13.7 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
18.7 days - Average sunshine days in November:
21.4 days - Average sunshine days in December:
19.2 days
The month with the most sunshine days is November (21.4 days).
The month with the least sunshine days is July (11.8 days).
Average UV index
Mount Joy, 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
Mount Joy, PA
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility
Mount Joy, 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).
Mount Joy, Pennsylvania, USA
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