Climate and monthly weather forecastWest Jonestown, PA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in West Jonestown, Pennsylvania, with an average temperature fluctuating between 33.6°F (0.9°C) and 21.2°F (-6°C). January, with its high-temperature average of 33.6°F (0.9°C) and a low-temperature average of 21.2°F (-6°C), is the coldest month. Weather in January »Weather in February
February, the last month of the winter in West Jonestown, is another cold month, with an average temperature fluctuating between 37.4°F (3°C) and 22.8°F (-5.1°C). As February takes its course, West Jonestown's average high-temperature registers at a still cold 37.4°F (3°C), closely aligning with the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in West Jonestown, Pennsylvania, with an average temperature varying between 30.7°F (-0.7°C) and 46.9°F (8.3°C). With the arrival of March, the average high-temperature transitions from an icy 37.4°F (3°C) in February to a frosty 46.9°F (8.3°C). Weather in March »Weather in April
April is a moderate spring month in West Jonestown, Pennsylvania, with an average temperature ranging between max 58.8°F (14.9°C) and min 40.6°F (4.8°C). In April, the meteorological conditions change with the average high-temperature moving from a frosty 46.9°F (8.3°C) in March to a moderate 58.8°F (14.9°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in West Jonestown, Pennsylvania, with an average temperature fluctuating between 68.7°F (20.4°C) and 50.7°F (10.4°C). In West Jonestown, stepping into May brings a temperature increase, moving up from April's moderate 58.8°F (14.9°C) to an agreeable 68.7°F (20.4°C). Weather in May »Weather in June
June, the first month of the summer in West Jonestown, is a warm month, with an average temperature ranging between min 57.7°F (14.3°C) and max 76.6°F (24.8°C). June's arrival signals a modest temperature shift, moving from a pleasant 68.7°F (20.4°C) in May to a moderately hot 76.6°F (24.8°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in West Jonestown, Pennsylvania, with temperature in the range of an average low of 62.4°F (16.9°C) and an average high of 82°F (27.8°C). July, having an average high-temperature of 82°F (27.8°C) and an average low-temperature of 62.4°F (16.9°C), is the warmest month. July's heat index is calculated to be a tropical 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in West Jonestown, Pennsylvania, with an average temperature fluctuating between 60.6°F (15.9°C) and 79.7°F (26.5°C). As August takes hold, the average high-temperature is a still moderately hot 79.7°F (26.5°C), nearly mirroring that of the previous month. Weather in August »Weather in September
The first month of the autumn, September, is also an agreeable month in West Jonestown, Pennsylvania, with an average temperature fluctuating between 73.2°F (22.9°C) and 54.9°F (12.7°C). September's arrival aligns with a minor decrease in average high-temperatures, from August's warm 79.7°F (26.5°C) to an agreeable 73.2°F (22.9°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in West Jonestown, Pennsylvania, with an average temperature ranging between min 45.3°F (7.4°C) and max 61.7°F (16.5°C). Observing a mild shift, the average high-temperature during October reduces from September's pleasant 73.2°F (22.9°C) to a comfortable 61.7°F (16.5°C). Weather in October »Weather in November
November, the last month of the autumn in West Jonestown, is another chilly month, with an average temperature ranging between max 49.5°F (9.7°C) and min 34.7°F (1.5°C). The arrival of November corresponds with a reduction in the average high-temperature, down from October's enjoyable 61.7°F (16.5°C) to a frosty 49.5°F (9.7°C). Weather in November »Weather in December
December, the first month of the winter in West Jonestown, is still a cold month, with temperature in the range of an average high of 39.9°F (4.4°C) and an average low of 28.8°F (-1.8°C). The onset of December introduces a moderate change in West Jonestown's weather, with average high-temperatures falling from November's frosty 49.5°F (9.7°C) to a cold 39.9°F (4.4°C). Weather in December »Updated: Aug 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
West Jonestown's January weather, with an average high temperature of 33.6°F (0.9°C) and an average low temperature of 21.2°F (-6°C), tends to be the coldest of the year.
Throughout the year, there are 166.3 rainfall days, and 34.53" (877mm) of precipitation is accumulated.
January through May, October through December are months with snowfall in West Jonestown.
January is the month with the most snowfall. Snow falls for 10.1 days and accumulates 5.08" (129mm) of snow.
Throughout the year, there are 32.4 snowfall days, and 16.69" (424mm) of snow is accumulated.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
The months with the highest humidity are February, May, June and October, with an average relative humidity of 81%.
February has the least sunshine of the year, with an average of 4.3h 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.
April is the least humid month in West Jonestown, with an average relative humidity of 76%.
The wettest months are May and July, with an average 3.58" (91mm) of rainfall.
In West Jonestown, snow does not fall in June through September.
June has the longest days of the year, with an average of 15h and 0min of daylight.
The month with the highest UV index in West Jonestown is June, with an average maximum UV index of 6.
July stands out as West Jonestown's warmest month, with temperatures ranging between an average high of 82°F (27.8°C) and a low of 62.4°F (16.9°C).
The month with the most sunshine is July, with an average of 10.2h of sunshine.
The month with the least rainfall is September, when the rain falls for 12.8 days and typically collects 2.32" (59mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
West Jonestown, PA
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.6°F).
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure
West Jonestown, 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:
30.04"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
West Jonestown, PA
- Average wind speed in January:
8.3mph - Average wind speed in February:
8.4mph - Average wind speed in March:
8.7mph - Average wind speed in April:
8.6mph - Average wind speed in May:
6.5mph - Average wind speed in June:
6mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.8mph - Average wind speed in November:
7.3mph - Average wind speed in December:
7.8mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
West Jonestown, PA
The months with the highest relative humidity are February, May, June and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall
West Jonestown, PA
- Average rainfall in January:
2.52" - Average rainfall in February:
2.4" - Average rainfall in March:
2.52" - Average rainfall in April:
3.15" - Average rainfall in May:
3.58" - Average rainfall in June:
2.8"
- Average rainfall in July:
3.58" - Average rainfall in August:
3.54" - Average rainfall in September:
2.32" - Average rainfall in October:
2.95" - Average rainfall in November:
2.48" - Average rainfall in December:
2.68"
The wettest months (with the highest rainfall) are May and July (3.58").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days
West Jonestown, PA
- Average rainfall days in January:
9.1 days - Average rainfall days in February:
9.8 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
16.8 days - Average rainfall days in May:
18.6 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
18.3 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
12.8 days - Average rainfall days in October:
13.8 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
11 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (9.1 days).
Average snowfall
West Jonestown, PA
The month with the highest snowfall is January (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
West Jonestown, PA
- Average snowfall days in January:
10.1 days - Average snowfall days in February:
8.2 days - Average snowfall days in March:
5.7 days - Average snowfall days in April:
0.7 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:
1.5 days - Average snowfall days in December:
5.9 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
West Jonestown, 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:
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 24min - Average sunshine in February:
4h and 18min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 54min - Average sunshine in May:
8h and 0min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 36min - Average sunshine in October:
5h and 12min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days
West Jonestown, PA
- Average sunshine days in January:
14.7 days - Average sunshine days in February:
11.8 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
11.2 days - Average sunshine days in May:
10.1 days - Average sunshine days in June:
11.5 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
12.4 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
14.9 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
14.8 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (10.1 days).
Average UV index
West Jonestown, PA
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
West Jonestown, PA
The months with the most cloud cover are February and December (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility
West Jonestown, PA
The months with the highest visibility are March, April, June, July and November (6mi).
The months with the lowest visibility are January, February, May, August, September, October and December (5mi).
