Climate and monthly weather forecast
Allen, MD

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Weather in January

January, the same as December, is another cold winter month in Allen, Maryland, with temperature in the range of an average high of 42.1°F (5.6°C) and an average low of 31.5°F (-0.3°C). January is the month that records the lowest temperatures, with averages ranging from a high of 42.1°F (5.6°C) to a low of 31.5°F (-0.3°C). Weather in January »

Weather in February

The last month of the winter, February, is a frosty month in Allen, Maryland, with an average temperature ranging between max 45.3°F (7.4°C) and min 33.6°F (0.9°C). The arrival of February records an average high-temperature of a chilly 45.3°F (7.4°C), closely related to the 42.1°F (5.6°C) observed in January. Weather in February »

Weather in March

The first month of the spring, March, is a cool month in Allen, Maryland, with an average temperature varying between 39.4°F (4.1°C) and 50.7°F (10.4°C). March introduces a minor temperature shift, with average high-temperatures adjusting from February's frosty 45.3°F (7.4°C) to a fresh 50.7°F (10.4°C). Weather in March »

Weather in April

April is a refreshing spring month in Allen, Maryland, with an average temperature varying between 49.3°F (9.6°C) and 61.7°F (16.5°C). April brings a rise in Allen's average high-temperature, moving from a cool 50.7°F (10.4°C) in March to an enjoyable 61.7°F (16.5°C). Weather in April »

Weather in May

May, the last month of the spring in Allen, is an agreeable month, with an average temperature ranging between min 58.6°F (14.8°C) and max 71.1°F (21.7°C). As Allen transitions into May, the average high-temperature is observed to rise from a comfortable 61.7°F (16.5°C) in April to an agreeable 71.1°F (21.7°C). Weather in May »

Weather in June

June, the first month of the summer in Allen, is a warm month, with an average temperature varying between 67.1°F (19.5°C) and 79.3°F (26.3°C). As June arrives, a slight rise in the average high-temperature is observed, moving from a pleasant 71.1°F (21.7°C) in May to a warm 79.3°F (26.3°C). Weather in June »

Weather in July

July, like June, in Allen, Maryland, is another warm summer month, with temperature in the range of an average high of 84.2°F (29°C) and an average low of 72.3°F (22.4°C). With an average high-temperature of 84.2°F (29°C) and an average low-temperature of 72.3°F (22.4°C), July is the warmest month. The heat index value for July is evaluated at a tropical 93.2°F (34°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Allen, Maryland, with an average temperature varying between 82.8°F (28.2°C) and 71.1°F (21.7°C). The onset of August marks an average high-temperature of a still moderately hot 82.8°F (28.2°C), hardly differing from July's 84.2°F (29°C). Weather in August »

Weather in September

September, the first month of the autumn in Allen, is also a moderately hot month, with temperature in the range of an average high of 77°F (25°C) and an average low of 65.8°F (18.8°C). September reveals a small adjustment in temperature, transitioning from an average high of 82.8°F (28.2°C) in August to a still moderately hot 77°F (25°C). Weather in September »

Weather in October

October, like September, in Allen, Maryland, is another enjoyable autumn month, with an average temperature fluctuating between 67.1°F (19.5°C) and 56.3°F (13.5°C). October is characterized by a reduction in the average high-temperature, from a warm 77°F (25°C) in September to a comfortable 67.1°F (19.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another refreshing month in Allen, Maryland, with an average temperature fluctuating between 44.4°F (6.9°C) and 55.6°F (13.1°C). Welcoming November, Allen observes a shift in the average high-temperature, falling from October's enjoyable 67.1°F (19.5°C) to a mild 55.6°F (13.1°C). Weather in November »

Weather in December

December, the first month of the winter in Allen, is still a chilly month, with an average temperature ranging between max 48.2°F (9°C) and min 38.1°F (3.4°C). In the transition to December, Allen observes a minor drop in the average high-temperature, shifting from a refreshing 55.6°F (13.1°C) in November to a frosty 48.2°F (9°C). Weather in December »
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

In Allen, the average lowest temperatures are observed in January, with a high of 42.1°F (5.6°C) and a low of 31.5°F (-0.3°C).

What is the least humid month?

With an average relative humidity of 74%, January is the least humid month.

What is the driest month?

The month with the least rainfall in Allen is January, when the rain falls for 9.7 days and typically collects 1.93" (49mm) of precipitation.

How much does it rain?

Throughout the year, there are 158.2 rainfall days, and 29.96" (761mm) of precipitation is accumulated.

When does it snow?

January through March, November and December are months with snowfall.

What is the snowiest month?

The month with the most snowfall is January, when snow falls for 3.1 days and typically aggregates up to 1.34" (34mm) of snow.

How much does it snow?

In Allen, during the entire year, snow falls for 8.7 days and aggregates up to 3.74" (95mm) of snow.

What are the months with the lowest UV index?

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

What are the months with the least sunshine?

The months with the least sunshine are February and December, with an average of 5.3h 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.

When it does not snow?

April through October are months without snowfall.

What is the most humid month?

The most humid month is May, with an average relative humidity of 79%.

When is the highest UV index?

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

When are the longest days?

The month with the longest days is June, with an average of 14h and 48min of daylight.

What time of the year is the hottest?

July is the warmest month of the year, registering average temperatures as high as 84.2°F (29°C) and as low as 72.3°F (22.4°C).

What month has the most sunshine?

With an average of 10.9h of sunshine, July has the most sunshine of the year.

What is the wettest month?

The month with the most rainfall is August, when the rain falls for 17.2 days and typically aggregates up to 3.46" (88mm) of precipitation.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 36min of daylight.

Average temperature
Allen, MD

Average temperature - Allen, MD

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (42.1°F).

The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

Average pressure
Allen, MD

Average pressure - Allen, MD

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed
Allen, MD

Average wind speed - Allen, MD

The windiest months (with the highest average wind speed) are January, February and March (10.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).

Average rainfall
Allen, MD

Average rainfall - Allen, MD

The wettest month (with the highest rainfall) is August (3.46").
The driest month (with the least rainfall) is January (1.93").

Average rainfall days
Allen, MD

Average rainfall days - Allen, MD

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (9.7 days).

Average snowfall
Allen, MD

Average snowfall - Allen, MD

The month with the highest snowfall is January (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days
Allen, MD

Average snowfall days - Allen, MD

The month with the highest number of snowfall days is January (3.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
Allen, MD

Average daylight / Average sunshine - Allen, MD

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are February and December (Average sunshine: 5h and 18min).

Average sunshine days
Allen, MD

Average sunshine days - Allen, MD

The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is August (9.8 days).

Average UV index
Allen, MD

Average UV index - Allen, MD

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 and December (UV index 2).

Average visibility
Allen, MD

Average visibility - Allen, MD

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

Allen, Maryland, USA

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