Climate and monthly weather forecast
Greenbrook, PA

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Weather in January

January, the same as December, is a wintry winter month in Greenbrook, Pennsylvania, with temperature in the range of an average low of 25.2°F (-3.8°C) and an average high of 37°F (2.8°C). January is the coldest month, exhibiting average temperatures of 37°F (2.8°C) at the peak and 25.2°F (-3.8°C) at the base. Weather in January »

Weather in February

February, the last month of the winter in Greenbrook, is also an icy month, with an average temperature ranging between max 40.6°F (4.8°C) and min 27°F (-2.8°C). As Greenbrook welcomes February, the average high-temperature stabilizes at a still cold 40.6°F (4.8°C), showing little deviation from January's 37°F (2.8°C). Weather in February »

Weather in March

March, the first month of the spring in Greenbrook, is a chilly month, with an average temperature varying between 48.7°F (9.3°C) and 34.3°F (1.3°C). The shift into March is marked by a modest rise in the average high-temperature, moving from February's wintry 40.6°F (4.8°C) to a chilly 48.7°F (9.3°C). Weather in March »

Weather in April

April is a refreshing spring month in Greenbrook, Pennsylvania, with an average temperature fluctuating between 61.2°F (16.2°C) and 44.1°F (6.7°C). April witnesses an increase in the average high-temperature, moving from a chilly 48.7°F (9.3°C) in March to a comfortable 61.2°F (16.2°C). Weather in April »

Weather in May

May, the last month of the spring in Greenbrook, is an agreeable month, with an average temperature fluctuating between 53.8°F (12.1°C) and 71.2°F (21.8°C). The shift into May is characterized by a rise in the average high-temperature, transitioning from April's refreshing 61.2°F (16.2°C) to an agreeable 71.2°F (21.8°C). Weather in May »

Weather in June

June, the first month of the summer in Greenbrook, is a warm month, with an average temperature ranging between min 61.7°F (16.5°C) and max 79.5°F (26.4°C). A minor escalation in the average high-temperature is seen with the onset of June, moving from an agreeable 71.2°F (21.8°C) in May to a moderately hot 79.5°F (26.4°C). Weather in June »

Weather in July

July, like June, in Greenbrook, Pennsylvania, is another warm summer month, with temperature in the range of an average low of 68°F (20°C) and an average high of 85.5°F (29.7°C). The average temperatures reach their apex in July, averaging 85.5°F (29.7°C) at the high end and 68°F (20°C) at the low end. In July, the average heat index is evaluated at a very hot 95°F (35°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Greenbrook, Pennsylvania, with an average temperature varying between 83.1°F (28.4°C) and 66.7°F (19.3°C). The transition into August notes an average high-temperature of a still moderately hot 83.1°F (28.4°C), revealing a mild distinction from the 85.5°F (29.7°C) in July. Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Greenbrook, Pennsylvania, with an average temperature fluctuating between 76.5°F (24.7°C) and 59.9°F (15.5°C). The beginning of September brings a minor change in the average high-temperature, shifting from 83.1°F (28.4°C) in August to a still warm 76.5°F (24.7°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Greenbrook, Pennsylvania, with temperature in the range of an average high of 64.2°F (17.9°C) and an average low of 49.6°F (9.8°C). Greenbrook's weather changes with the onset of October, slightly falling from a warm 76.5°F (24.7°C) in September to a refreshing 64.2°F (17.9°C). Weather in October »

Weather in November

November, the last month of the autumn in Greenbrook, is another cool month, with an average temperature fluctuating between 38.7°F (3.7°C) and 52.3°F (11.3°C). As November commences, the average high-temperature shows a reduction, transitioning from a comfortable 64.2°F (17.9°C) in October to a fresh 52.3°F (11.3°C). Weather in November »

Weather in December

December, the first month of the winter in Greenbrook, is also a frosty month, with temperature in the range of an average high of 43.7°F (6.5°C) and an average low of 32.4°F (0.2°C). December brings a slight decrease in the average high-temperature, shifting from a cool 52.3°F (11.3°C) in November to a frosty 43.7°F (6.5°C). Weather in December »
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month in Greenbrook?

In Greenbrook, Pennsylvania, the average lowest temperatures are observed in January, with a high of 37°F (2.8°C) and a low of 25.2°F (-3.8°C).

What is the driest month in Greenbrook?

January is the month with the least rainfall in Greenbrook. Rain falls for 8 days and accumulates 1.89" (48mm) of precipitation.

How much does it rain in Greenbrook?

Throughout the year, in Greenbrook, there are 154.4 rainfall days, and 31.38" (797mm) of precipitation is accumulated.

When does it snow in Greenbrook?

January through May, November and December are months with snowfall in Greenbrook, Pennsylvania.

How much does it snow in Greenbrook?

Throughout the year, in Greenbrook, there are 15.9 snowfall days, and 8.5" (216mm) of snow is accumulated.

What are the months with the lowest UV index in Greenbrook?

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

What are the most humid months in Greenbrook?

February and October, with an average relative humidity of 78%, are most humid months in Greenbrook, Pennsylvania.

What is the month with the least sunshine in Greenbrook?

February has the least sunshine of the year, with an average of 4.8h of sunshine.

What is the snowiest month in Greenbrook?

The month with the most snowfall is March, when snow falls for 3.3 days and typically aggregates up to 2.99" (76mm) of snow.

When is Daylight Saving Time (DST) in Greenbrook?

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 in Greenbrook?

April is the least humid month, with an average relative humidity of 72%.

When is the highest UV index in Greenbrook?

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

When it does not snow in Greenbrook?

June through October are months without snowfall.

When are the longest days in Greenbrook?

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

What is the warmest month in Greenbrook?

With average high temperatures of 85.5°F (29.7°C) and lows of 68°F (20°C), July is the warmest month.

What is the rainiest month in Greenbrook?

July is the month with the most rainfall in Greenbrook, Pennsylvania. Rain falls for 18.8 days and accumulates 3.66" (93mm) of precipitation.

What month has the most sunshine in Greenbrook?

The month with the most sunshine is July, with an average of 10.6h of sunshine.

What is the month with the shortest days in Greenbrook?

December has the shortest days of the year, with an average of 9h and 24min of daylight.

Average temperature
Greenbrook, PA

Average temperature - Greenbrook, PA

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (37°F).

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure
Greenbrook, PA

Average pressure - Greenbrook, PA

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed
Greenbrook, PA

Average wind speed - Greenbrook, PA

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity
Greenbrook, PA

Average humidity - Greenbrook, PA

The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).

Average rainfall
Greenbrook, PA

Average rainfall - Greenbrook, PA

The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is January (1.89").

Average rainfall days
Greenbrook, PA

Average rainfall days - Greenbrook, PA

The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (8 days).

Average snowfall
Greenbrook, PA

Average snowfall - Greenbrook, PA

The month with the highest snowfall is March (2.99").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days
Greenbrook, PA

Average snowfall days - Greenbrook, PA

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight / Average sunshine
Greenbrook, PA

Average daylight / Average sunshine - Greenbrook, 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 48min).

Average sunshine days
Greenbrook, PA

Average sunshine days - Greenbrook, PA

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.9 days).

Average UV index
Greenbrook, PA

Average UV index - Greenbrook, 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
Greenbrook, PA

Average visibility - Greenbrook, PA

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

Greenbrook, Pennsylvania, USA

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