Climate and monthly weather forecast
Dallastown, PA

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Weather in January

January, the same as December, is an icy winter month in Dallastown, Pennsylvania, with an average temperature varying between 35.8°F (2.1°C) and 23.4°F (-4.8°C). January proves to be the coldest month, recording an average maximum temperature of 35.8°F (2.1°C) and a minimum temperature of 23.4°F (-4.8°C). Weather in January »

Weather in February

February, the last month of the winter in Dallastown, is also a wintry month, with temperature in the range of an average low of 25.2°F (-3.8°C) and an average high of 39.4°F (4.1°C). Dallastown measures an average high-temperature of a still cold 39.4°F (4.1°C) in February, nearly consistent with the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Dallastown, is a chilly month, with an average temperature ranging between max 48.2°F (9°C) and min 32.9°F (0.5°C). With the beginning of March, Dallastown's average high-temperature sees a minor increase, transitioning from a cold 39.4°F (4.1°C) in February to a chilly 48.2°F (9°C). Weather in March »

Weather in April

April is a mild spring month in Dallastown, Pennsylvania, with an average temperature fluctuating between 60.4°F (15.8°C) and 42.8°F (6°C). The onset of April marks an increase in the average high-temperature, moving from a frosty 48.2°F (9°C) in March to a mild 60.4°F (15.8°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Dallastown, Pennsylvania, with an average temperature ranging between max 70.3°F (21.3°C) and min 52.9°F (11.6°C). With the onset of May, Dallastown's average high-temperature sees a rise, moving from April's refreshing 60.4°F (15.8°C) to a pleasant 70.3°F (21.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Dallastown, Pennsylvania, with an average temperature fluctuating between 60.4°F (15.8°C) and 77.9°F (25.5°C). Entering June, Dallastown notices a subtle temperature elevation, with the average high-temperature advancing from May's agreeable 70.3°F (21.3°C) to a moderately hot 77.9°F (25.5°C). Weather in June »

Weather in July

July, like June, in Dallastown, Pennsylvania, is another warm summer month, with temperature in the range of an average high of 83.5°F (28.6°C) and an average low of 65.5°F (18.6°C). July, having an average high-temperature of 83.5°F (28.6°C) and an average low-temperature of 65.5°F (18.6°C), is the warmest month. July's heat index is evaluated at a hot 91.4°F (33°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Dallastown, Pennsylvania, with an average temperature fluctuating between 81°F (27.2°C) and 63.9°F (17.7°C). With the onset of August, the average high-temperature registers at a still warm 81°F (27.2°C), subtly different from July's 83.5°F (28.6°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Dallastown, Pennsylvania, with an average temperature ranging between min 57.2°F (14°C) and max 75°F (23.9°C). The commencement of September indicates a gentle shift in the average high-temperature, receding from August's 81°F (27.2°C) to a still moderately hot 75°F (23.9°C). Weather in September »

Weather in October

October, the same as September, is another refreshing autumn month in Dallastown, Pennsylvania, with an average temperature ranging between min 47.5°F (8.6°C) and max 63.1°F (17.3°C). October brings a minor decrease, with the average high-temperature reducing from a warm 75°F (23.9°C) in September to a refreshing 63.1°F (17.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Dallastown, Pennsylvania, with an average temperature fluctuating between 36.3°F (2.4°C) and 50.9°F (10.5°C). The average high-temperature decreases in November, shifting from an enjoyable 63.1°F (17.3°C) in October to a cool 50.9°F (10.5°C). Weather in November »

Weather in December

The first month of the winter, December, is also an icy month in Dallastown, Pennsylvania, with an average temperature fluctuating between 41.9°F (5.5°C) and 30.4°F (-0.9°C). The arrival of December corresponds with a temperature reduction, down from November's cool 50.9°F (10.5°C) to an icy 41.9°F (5.5°C). Weather in December »

Frequently asked questions

What is the coldest month?

Dallastown's coldest month, January, generally records average temperatures ranging from a high of 35.8°F (2.1°C) to a low of 23.4°F (-4.8°C).

How many days does it rain in Dallastown?

Throughout the year, there are 139.8 rainfall days, and 22.95" (583mm) of precipitation is accumulated.

When does it snow?

Months with snowfall are January through May, October through December.

How many days does it snow?

In Dallastown, during the entire year, snow falls for 18.4 days and aggregates up to 9.13" (232mm) of snow.

What is the month with the lowest UV index?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the driest month?

February is the month with the least rainfall. Rain falls for 6.7 days and accumulates 1.26" (32mm) of precipitation.

What is the month with the least sunshine?

The month with the least sunshine is February, with an average of 4.7h of sunshine.

What is the least humid month?

March, April and November, with an average relative humidity of 76%, are the least humid months.

When does it snow the most?

The month with the most snowfall is March, when snow falls for 4.5 days and typically aggregates up to 3.23" (82mm) of snow.

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?

May is the most humid month, with an average relative humidity of 81%.

When is the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

When it does not snow?

In Dallastown, snow does not fall in June through September.

When are the longest days?

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

What is the warmest month?

With an average high-temperature of 83.5°F (28.6°C) and an average low-temperature of 65.5°F (18.6°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 wettest month?

August is the month with the most rainfall in Dallastown. Rain falls for 15 days and accumulates 2.8" (71mm) 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
Dallastown, PA

Average temperature - Dallastown, PA

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (35.8°F).

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure
Dallastown, PA

Average pressure - Dallastown, PA

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed
Dallastown, PA

Average wind speed - Dallastown, PA

The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity
Dallastown, PA

Average humidity - Dallastown, PA

The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are March, April and November (76%).

Average rainfall
Dallastown, PA

Average rainfall - Dallastown, PA

The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is February (1.26").

Average rainfall days
Dallastown, PA

Average rainfall days - Dallastown, PA

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.3 days).

Average snowfall
Dallastown, PA

Average snowfall - Dallastown, PA

The month with the highest snowfall is March (3.23").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Dallastown, PA

Average snowfall days - Dallastown, PA

The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Dallastown, PA

Average daylight / Average sunshine - Dallastown, 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 24min).

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 42min).

Average sunshine days
Dallastown, PA

Average sunshine days - Dallastown, PA

The month with the most sunshine days is January (20.4 days).
The month with the least sunshine days is May (11.7 days).

Average UV index
Dallastown, PA

Average UV index - Dallastown, PA

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average visibility
Dallastown, PA

Average visibility - Dallastown, 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).

Dallastown, Pennsylvania, USA

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