Climate and monthly weather forecast
Bethlehem, IN

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Weather in January

January, the same as December, is another cold winter month in Bethlehem, Indiana, with an average temperature varying between 25.3°F (-3.7°C) and 38.3°F (3.5°C). Bethlehem's coldest temperatures are experienced in January, with average high temperatures of 38.3°F (3.5°C) and lows of 25.3°F (-3.7°C). Weather in January »

Weather in February

February, the last month of the winter in Bethlehem, is a chilly month, with an average temperature varying between 43°F (6.1°C) and 28.2°F (-2.1°C). The commencement of February introduces an average high-temperature of a chilly 43°F (6.1°C), closely mirroring the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Bethlehem, is a cool month, with an average temperature varying between 53.2°F (11.8°C) and 36.7°F (2.6°C). March's arrival brings a temperature shift, moving from a frosty 43°F (6.1°C) in February to a fresh 53.2°F (11.8°C). Weather in March »

Weather in April

April in Bethlehem, Indiana, is a refreshing spring month, with an average temperature varying between 46°F (7.8°C) and 64.9°F (18.3°C). The commencement of April sees a shift in the average high-temperature, moving from a fresh 53.2°F (11.8°C) in March to a comfortable 64.9°F (18.3°C). Weather in April »

Weather in May

May, the last month of the spring in Bethlehem, is a warm month, with an average temperature ranging between max 74.8°F (23.8°C) and min 56.1°F (13.4°C). The beginning of May signals a rise in the average high-temperature, moving from a refreshing 64.9°F (18.3°C) in April to a warm 74.8°F (23.8°C). Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in Bethlehem, Indiana, with an average temperature varying between 63.3°F (17.4°C) and 82.9°F (28.3°C). In Bethlehem, stepping into June brings a gentle temperature nudge, moving slightly up from May's warm 74.8°F (23.8°C) to a still moderately hot 82.9°F (28.3°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Bethlehem, Indiana, with an average temperature ranging between min 66.4°F (19.1°C) and max 85.6°F (29.8°C). July, with its average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 66.4°F (19.1°C), holds the record as the warmest month. The heat index in July is calculated to be a fiery hot 96.8°F (36°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Bethlehem, Indiana, with an average temperature fluctuating between 84.7°F (29.3°C) and 65.1°F (18.4°C). The commencement of August brings an average high-temperature of a still moderately hot 84.7°F (29.3°C), marking an inconsequential divergence from July. Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Bethlehem, Indiana, with an average temperature ranging between max 79°F (26.1°C) and min 59.5°F (15.3°C). September sees a slight reduction in average high-temperature, with a shift from a warm 84.7°F (29.3°C) in August to a still moderately hot 79°F (26.1°C). Weather in September »

Weather in October

October, like September, in Bethlehem, Indiana, is another enjoyable autumn month, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 47.3°F (8.5°C). The arrival of October corresponds with a shift in temperature, down from a warm 79°F (26.1°C) in September to a refreshing 65.8°F (18.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Bethlehem, Indiana, with temperature in the range of an average high of 52.9°F (11.6°C) and an average low of 36.7°F (2.6°C). Welcoming November, Bethlehem observes a shift in the average high-temperature, falling from October's enjoyable 65.8°F (18.8°C) to a fresh 52.9°F (11.6°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Bethlehem, Indiana, with an average temperature fluctuating between 31.3°F (-0.4°C) and 43.7°F (6.5°C). The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a fresh 52.9°F (11.6°C) in November to a chilly 43.7°F (6.5°C). Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in Bethlehem?

In Bethlehem, January registers the lowest temperatures, averaging 38.3°F (3.5°C) at the peak and 25.3°F (-3.7°C) at the lowest.

How much does it rain in Bethlehem?

Throughout the year, there are 147.9 rainfall days, and 23.98" (609mm) of precipitation is accumulated.

When does it snow in Bethlehem?

January through April, October through December are months with snowfall in Bethlehem.

How much does it snow in Bethlehem?

Throughout the year, in Bethlehem, there are 25.8 snowfall days, and 6.02" (153mm) of snow is accumulated.

What is the month with the least sunshine in Bethlehem?

January has the least sunshine of the year, with an average of 4.2h of sunshine.

When is the lowest UV index in Bethlehem?

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

What is the most humid month in Bethlehem?

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

When does it snow the most in Bethlehem?

The month with the most snowfall is March, when snow falls for 3.7 days and typically aggregates up to 1.54" (39mm) of snow.

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 wettest month in Bethlehem?

April is the month with the most rainfall in Bethlehem. Rain falls for 14.9 days and accumulates 2.64" (67mm) of precipitation.

When it does not snow in Bethlehem?

May through September are months without snowfall.

When are the longest days in Bethlehem?

With an average of 14h and 48min of daylight, June has the longest days of the year.

What is the month with the highest UV index in Bethlehem?

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

What time of the year is the hottest in Bethlehem?

July, recognised by an average high temperature of 85.6°F (29.8°C) and a low of 66.4°F (19.1°C), is Bethlehem's warmest month.

What month has the most sunshine in Bethlehem?

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

What are the least humid months in Bethlehem?

The months with the lowest humidity in Bethlehem, Indiana, are August through October, with an average relative humidity of 75%.

What is the driest month in Bethlehem?

September is the month with the least rainfall. Rain falls for 11 days and accumulates 1.3" (33mm) of precipitation.

What is the month with the shortest days in Bethlehem?

December has the shortest days of the year in Bethlehem, with an average of 9h and 30min of daylight.

Average temperature
Bethlehem, IN

Average temperature - Bethlehem, IN

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.3°F).

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).

Average pressure
Bethlehem, IN

Average pressure - Bethlehem, IN

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed
Bethlehem, IN

Average wind speed - Bethlehem, IN

The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

Average humidity
Bethlehem, IN

Average humidity - Bethlehem, IN

The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are August, September and October (75%).

Average rainfall
Bethlehem, IN

Average rainfall - Bethlehem, IN

The wettest month (with the highest rainfall) is April (2.64").
The driest month (with the least rainfall) is September (1.3").

Average rainfall days
Bethlehem, IN

Average rainfall days - Bethlehem, IN

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (7.8 days).

Average snowfall
Bethlehem, IN

Average snowfall - Bethlehem, IN

The month with the highest snowfall is March (1.54").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days
Bethlehem, IN

Average snowfall days - Bethlehem, IN

The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Bethlehem, IN

Average daylight / Average sunshine - Bethlehem, IN

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 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days
Bethlehem, IN

Average sunshine days - Bethlehem, IN

The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is May (11.9 days).

Average UV index
Bethlehem, IN

Average UV index - Bethlehem, IN

The months with the highest UV index are 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
Bethlehem, IN

Average visibility - Bethlehem, IN

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

Bethlehem, Indiana, USA

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