Climate and monthly weather forecastMount Joy, NJ
Climate and monthly weather forecast
Weather in January
January, like December, in Mount Joy, New Jersey, is an icy winter month, with an average temperature fluctuating between 34.3°F (1.3°C) and 21.6°F (-5.8°C). The coldest period tends to be January, when average temperatures fluctuate between a high of 34.3°F (1.3°C) and a low of 21.6°F (-5.8°C). Weather in January »Weather in February
February, the last month of the winter in Mount Joy, is another cold month, 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). Transitioning into February, Mount Joy records an average high-temperature of a still icy 37.9°F (3.3°C), almost identical to January's 34.3°F (1.3°C). Weather in February »Weather in March
March, the first month of the spring in Mount Joy, is a frosty month, with an average temperature varying between 30.6°F (-0.8°C) and 46.2°F (7.9°C). As February transitions into March, Mount Joy notices a gentle rise in the average high-temperature, transitioning from an icy 37.9°F (3.3°C) to a frosty 46.2°F (7.9°C). Weather in March »Weather in April
April in Mount Joy, New Jersey, is a mild spring month, with an average temperature ranging between max 58.6°F (14.8°C) and min 40.6°F (4.8°C). In April, the average high-temperature increases from a chilly 46.2°F (7.9°C) in March to a mild 58.6°F (14.8°C). Weather in April »Weather in May
May, the last month of the spring in Mount Joy, is an agreeable month, with an average temperature fluctuating between 69.6°F (20.9°C) and 50.5°F (10.3°C). The onset of May brings a temperature shift, with the average high-temperature moving from a moderate 58.6°F (14.8°C) in April to a pleasant 69.6°F (20.9°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Mount Joy, New Jersey, with an average temperature fluctuating between 77.5°F (25.3°C) and 57.7°F (14.3°C). June's onset is marked by a subtle temperature increase, moving from a pleasant 69.6°F (20.9°C) in May to a warm 77.5°F (25.3°C). Weather in June »Weather in July
July, like June, in Mount Joy, New Jersey, is another warm summer month, with an average temperature fluctuating between 63.9°F (17.7°C) and 83.3°F (28.5°C). July tends to be the warmest month, with temperatures averaging a daily high of 83.3°F (28.5°C) and a low of 63.9°F (17.7°C). For most parts of July, the heat index is evaluated at a tropical 91.4°F (33°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Mount Joy, New Jersey, with an average temperature ranging between max 81.1°F (27.3°C) and min 61.5°F (16.4°C). A minor adjustment in Mount Joy's average high-temperature is noted with the start of August, touching a still moderately hot 81.1°F (27.3°C) from July's 83.3°F (28.5°C). Weather in August »Weather in September
September, the first month of the autumn in Mount Joy, is also a moderately hot month, with an average temperature varying between 55.2°F (12.9°C) and 74.5°F (23.6°C). Mount Joy's progression into September involves a gentle drop in the average high-temperature, from a moderately hot 81.1°F (27.3°C) in August to a still warm 74.5°F (23.6°C). Weather in September »Weather in October
October, like September, in Mount Joy, New Jersey, is another refreshing autumn month, with temperature in the range of an average low of 46.2°F (7.9°C) and an average high of 62.1°F (16.7°C). October weather is marked by a drop in the average high-temperature, falling from a warm 74.5°F (23.6°C) in September to a comfortable 62.1°F (16.7°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Mount Joy, New Jersey, with temperature in the range of an average low of 35.4°F (1.9°C) and an average high of 50°F (10°C). November brings a drop in Mount Joy's average high-temperature, falling from a comfortable 62.1°F (16.7°C) in October to a cool 50°F (10°C). Weather in November »Weather in December
December, the first month of the winter in Mount Joy, is also an icy month, with temperature in the range of an average high of 40.3°F (4.6°C) and an average low of 28.9°F (-1.7°C). A decrease in the average high-temperature is observed during December, shifting from a fresh 50°F (10°C) in November to a wintry 40.3°F (4.6°C). Weather in December »Updated: Jul 23, 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
Mount Joy's January weather, marked by an average high temperature of 34.3°F (1.3°C) and an average low temperature of 21.6°F (-5.8°C), is the coldest in the year.
In Mount Joy, during the entire year, the rain falls for 124.4 days and collects up to 13.39" (340mm) of precipitation.
January through April, November and December are months with snowfall.
In Mount Joy, during the entire year, snow falls for 22 days and aggregates up to 5" (127mm) of snow.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
With an average relative humidity of 81%, February is the most humid month.
The month with the most snowfall is February, when snow falls for 6.8 days and typically aggregates up to 1.42" (36mm) of snow.
The month with the least sunshine is February, with an average of 4.6h of sunshine.
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 months with the lowest humidity are April and July, with an average relative humidity of 76%.
In Mount Joy, snow does not fall in May through October.
June has the longest days of the year, with an average of 15h and 0min of daylight.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
With its average high temperature of 83.3°F (28.5°C) and a low of 63.9°F (17.7°C), July is regarded as the warmest month.
The month with the most rainfall is July, when the rain falls for 12.8 days and typically aggregates up to 1.65" (42mm) of precipitation.
With an average of 10.4h of sunshine, July has the most sunshine of the year.
September is the month with the least rainfall. Rain falls for 8.9 days and accumulates 0.71" (18mm) of precipitation.
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Mount Joy, NJ
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34.3°F).
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure
Mount Joy, NJ
- 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:
29.98"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
Mount Joy, NJ
- Average wind speed in January:
8mph - 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:
6.3mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
4.9mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.6mph - Average wind speed in November:
7mph - Average wind speed in December:
7.5mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity
Mount Joy, NJ
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall
Mount Joy, NJ
- Average rainfall in January:
0.87" - Average rainfall in February:
0.79" - Average rainfall in March:
0.91" - Average rainfall in April:
1.26" - Average rainfall in May:
1.38" - Average rainfall in June:
1.26"
The wettest month (with the highest rainfall) is July (1.65").
The driest month (with the least rainfall) is September (0.71").
Average rainfall days
Mount Joy, NJ
- Average rainfall days in January:
7.1 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
9.5 days - Average rainfall days in April:
12.5 days - Average rainfall days in May:
13.9 days - Average rainfall days in June:
12.5 days
- Average rainfall days in July:
12.8 days - Average rainfall days in August:
12.7 days - Average rainfall days in September:
8.9 days - Average rainfall days in October:
10.7 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (7.1 days).
Average snowfall
Mount Joy, NJ
The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Mount Joy, NJ
- Average snowfall days in January:
6.7 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
4.4 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0 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:
3.3 days
The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Mount Joy, NJ
- 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 54min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 12min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 36min
- 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 30min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 48min
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 36min).
Average sunshine days
Mount Joy, NJ
- Average sunshine days in January:
20.1 days - Average sunshine days in February:
15.4 days - Average sunshine days in March:
16.7 days - Average sunshine days in April:
15 days - Average sunshine days in May:
14 days - Average sunshine days in June:
15.3 days
- Average sunshine days in July:
15.2 days - Average sunshine days in August:
16.2 days - Average sunshine days in September:
18.6 days - Average sunshine days in October:
18.6 days - Average sunshine days in November:
20.2 days - Average sunshine days in December:
19.8 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (14 days).
Average UV index
Mount Joy, NJ
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, NJ
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility
Mount Joy, NJ
The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).
