Climate and monthly weather forecast
Bethlehem, MD

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Weather in January

January, like December, in Bethlehem, Maryland, is another cold winter month, with temperature in the range of an average low of 29.7°F (-1.3°C) and an average high of 40.6°F (4.8°C). January is the coldest month of the year, registering average temperatures as high as 40.6°F (4.8°C) and as low as 29.7°F (-1.3°C). Weather in January »

Weather in February

February, the last month of the winter in Bethlehem, is a chilly month, with an average temperature ranging between min 32°F (0°C) and max 44.2°F (6.8°C). The shift into February reveals an average high-temperature of a chilly 44.2°F (6.8°C), closely mirroring January's climate. Weather in February »

Weather in March

March, the first month of the spring in Bethlehem, is a cool month, with an average temperature fluctuating between 38.1°F (3.4°C) and 50.9°F (10.5°C). The transition from February to March brings a subtle temperature rise, with average high-temperatures increasing from a frosty 44.2°F (6.8°C) to a cool 50.9°F (10.5°C). Weather in March »

Weather in April

April is a comfortable spring month in Bethlehem, Maryland, with an average temperature varying between 62.2°F (16.8°C) and 47.8°F (8.8°C). April comes with an increase, with the average high-temperature moving from a fresh 50.9°F (10.5°C) in March to a comfortable 62.2°F (16.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Bethlehem, Maryland, with an average temperature ranging between min 57.4°F (14.1°C) and max 71.8°F (22.1°C). Noticing a change, the average high-temperature during May moves from April's comfortable 62.2°F (16.8°C) to an agreeable 71.8°F (22.1°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Bethlehem, Maryland, with temperature in the range of an average low of 66°F (18.9°C) and an average high of 79.7°F (26.5°C). June's arrival signals a modest temperature shift, moving from an agreeable 71.8°F (22.1°C) in May to a moderately hot 79.7°F (26.5°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Bethlehem, Maryland, with an average temperature fluctuating between 84.4°F (29.1°C) and 70.9°F (21.6°C). July, with its average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 70.9°F (21.6°C), holds the record as the warmest month. The heat index value for July is computed to be a hot 93.2°F (34°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Bethlehem, Maryland, with an average temperature varying between 68.9°F (20.5°C) and 82.9°F (28.3°C). The shift from July to August is characterized by an average high-temperature of a still moderately hot 82.9°F (28.3°C), not significantly different from the 84.4°F (29.1°C) of July. Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Bethlehem, Maryland, with an average temperature fluctuating between 77.4°F (25.2°C) and 63.5°F (17.5°C). September's arrival signals a moderate reduction in the average high-temperature, easing from a warm 82.9°F (28.3°C) in August to a still moderately hot 77.4°F (25.2°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Bethlehem, Maryland, with an average temperature varying between 66.7°F (19.3°C) and 54.1°F (12.3°C). In Bethlehem, entering October brings a temperature decrement, reducing from September's moderately hot 77.4°F (25.2°C) to an enjoyable 66.7°F (19.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Bethlehem, Maryland, with an average temperature ranging between min 42.6°F (5.9°C) and max 54.5°F (12.5°C). Bethlehem's weather changes with the onset of November, slightly falling from a refreshing 66.7°F (19.3°C) in October to a cool 54.5°F (12.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Bethlehem, Maryland, with an average temperature fluctuating between 46.8°F (8.2°C) and 36.1°F (2.3°C). The onset of December is marked by a minor decrease in temperature, transitioning from a cool 54.5°F (12.5°C) in November to a frosty 46.8°F (8.2°C). Weather in December »

Frequently asked questions

What is the coldest time of year?

Bethlehem's January weather, with an average high temperature of 40.6°F (4.8°C) and an average low temperature of 29.7°F (-1.3°C), tends to be the coldest of the year.

What is the least humid month?

January and November, with an average relative humidity of 73%, are the least humid months.

What is the driest month?

The month with the least rainfall is January, when the rain falls for 7.5 days and typically collects 0.75" (19mm) of precipitation.

How many days does it rain?

Throughout the year, there are 130 rainfall days, and 15.04" (382mm) of precipitation is accumulated.

When does it snow?

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

When does it snow the most?

The month with the most snowfall in Bethlehem is January, when snow falls for 3 days and typically aggregates up to 0.59" (15mm) of snow.

How much does it snow?

Throughout the year, there are 9.4 snowfall days, and 1.85" (47mm) of snow is accumulated.

What are the months with the lowest UV index?

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

What is the month with the least sunshine?

February has the least sunshine of the year, with an average of 5.2h of sunshine.

When is Daylight Saving Time (DST) in Bethlehem?

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 79%.

When it does not snow?

May through October are months without snowfall.

What is the month with 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 is the warmest month?

With average temperatures fluctuating between a high of 84.4°F (29.1°C) and a low of 70.9°F (21.6°C), July stands out as the warmest month.

What month has the most sunshine?

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

What is the wettest month in Bethlehem?

August is the month with the most rainfall. Rain falls for 14.2 days and accumulates 1.93" (49mm) of precipitation.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 30min of daylight.

Average temperature
Bethlehem, MD

Average temperature - Bethlehem, MD

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (40.6°F).

The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure
Bethlehem, MD

Average pressure - Bethlehem, MD

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
Bethlehem, MD

Average wind speed - Bethlehem, MD

The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity
Bethlehem, MD

Average humidity - Bethlehem, MD

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and November (73%).

Average rainfall
Bethlehem, MD

Average rainfall - Bethlehem, MD

The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days
Bethlehem, MD

Average rainfall days - Bethlehem, MD

The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is February (7.4 days).

Average snowfall
Bethlehem, MD

Average snowfall - Bethlehem, MD

The month with the highest snowfall is January (0.59").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Bethlehem, MD

Average snowfall days - Bethlehem, MD

The month with the highest number of snowfall days is January (3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
Bethlehem, MD

Average daylight / Average sunshine - Bethlehem, 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 30min).

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).

Average sunshine days
Bethlehem, MD

Average sunshine days - Bethlehem, MD

The month with the most sunshine days is November (21 days).
The month with the least sunshine days is August (13 days).

Average UV index
Bethlehem, MD

Average UV index - Bethlehem, 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, February and December (UV index 2).

Average visibility
Bethlehem, MD

Average visibility - Bethlehem, 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).

Bethlehem, Maryland, USA

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