Climate and monthly weather forecast
West Jonestown, PA

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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 »

Frequently asked questions

What is the coldest time of year?

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.

How much does it rain in West Jonestown?

Throughout the year, there are 166.3 rainfall days, and 34.53" (877mm) of precipitation is accumulated.

When does it snow in West Jonestown?

January through May, October through December are months with snowfall in West Jonestown.

What is the snowiest month?

January is the month with the most snowfall. Snow falls for 10.1 days and accumulates 5.08" (129mm) of snow.

How much does it snow in West Jonestown?

Throughout the year, there are 32.4 snowfall days, and 16.69" (424mm) of snow is accumulated.

What are the months 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 most humid month?

The months with the highest humidity are February, May, June and October, with an average relative humidity of 81%.

What is the month with the least sunshine?

February has the least sunshine of the year, with an average of 4.3h of sunshine.

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 in West Jonestown, with an average relative humidity of 76%.

What is the rainiest month in West Jonestown?

The wettest months are May and July, with an average 3.58" (91mm) of rainfall.

When it does not snow?

In West Jonestown, snow does not fall in June through September.

When are the longest days?

June has the longest days of the year, with an average of 15h and 0min of daylight.

When is the highest UV index?

The month with the highest UV index in West Jonestown is June, with an average maximum UV index of 6.

What part of the year is the hottest?

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).

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.2h of sunshine.

What is the driest month in West Jonestown?

The month with the least rainfall is September, when the rain falls for 12.8 days and typically collects 2.32" (59mm) of precipitation.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

Average temperature
West Jonestown, PA

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 - West Jonestown, PA

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 - West Jonestown, PA

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

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 - West Jonestown, PA

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 - West Jonestown, PA

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

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 - West Jonestown, PA

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 / Average sunshine - West Jonestown, PA

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).

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 - West Jonestown, PA

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

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 visibility
West Jonestown, PA

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).

West Jonestown, Pennsylvania, USA

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