August weather forecast
Bethlehem, IN

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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).

Temperature

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. August nights are marked by an average temperature drop to a comfortable 65.1°F (18.4°C).

Heat index

For most parts of August, the heat index is calculated to be a hot 93.2°F (34°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.

Humidity

August through October, with an average relative humidity of 75%, are the least humid months in Bethlehem.

Rainfall

In Bethlehem, in August, during 14.3 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, in Bethlehem, there are 147.9 rainfall days, and 23.98" (609mm) of precipitation is accumulated.

Snowfall

In Bethlehem, snow does not fall in May through September.

Daylight

In Bethlehem, the average length of the day in August is 13h and 37min.
On the first day of the month, sunrise is at 6:44 am and sunset at 8:51 pm. On the last day of August, in Bethlehem, Indiana, sunrise is at 7:10 am and sunset at 8:12 pm EDT.

Sunshine

In August, the average sunshine in Bethlehem is 9.8h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 6 during August morphs into the following directions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in Bethlehem in August?

August temperatures in Bethlehem vary between a high-temperature of 84.7°F (29.3°C) and a low-temperature of 65.1°F (18.4°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in August is calculated to be 93.2°F (34°C).

What are the least humid months in Bethlehem?

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

What is the average humidity in August in Bethlehem?

In Bethlehem, Indiana, the average relative humidity in August is 75%.

How many days does it rain in August in Bethlehem?

In Bethlehem, Indiana, during August, the rain falls for 14.3 days and regularly aggregates up to 1.85" (47mm) of precipitation.

When it does not snow in Bethlehem?

In Bethlehem, Indiana, snow does not fall in May through September.

How many hours of daylight does Bethlehem have in August?

The average day length in August in Bethlehem, Indiana, is 13h and 37min.

When are sunrise and sunset in August in Bethlehem?

In August, on the first day of the month, sunrise is at 6:44 am and sunset at 8:51 pm. On the last day of the month, in Bethlehem, Indiana, sunrise is at 7:10 am and sunset at 8:12 pm EDT.

How many hours of sunshine does Bethlehem have in August?

In Bethlehem, the average sunshine duration in August is 9.8h.

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

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

What is the UV index reading in August in Bethlehem?

In Bethlehem, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Bethlehem, IN

Average temperature in August - Bethlehem, IN
  • Average high temperature in August: 84.7°F

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).

  • Average low temperature in August: 65.1°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 in August
Bethlehem, IN

Average pressure in August - Bethlehem, IN
  • Average pressure in August: 29.99"Hg

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 in August
Bethlehem, IN

Average wind speed in August - Bethlehem, IN
  • Average wind speed in August: 5mph

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 in August
Bethlehem, IN

Average humidity in August - Bethlehem, IN
  • Average humidity in August: 75%

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 in August
Bethlehem, IN

Average rainfall in August - Bethlehem, IN
  • Average rainfall in August: 1.85"

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 in August
Bethlehem, IN

Average rainfall days in August - Bethlehem, IN
  • Average rainfall days in August: 14.3 days

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 in August
Bethlehem, IN

Average snowfall in August - Bethlehem, IN
  • Average snowfall in August: 0"

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 in August
Bethlehem, IN

Average snowfall days in August - Bethlehem, IN
  • Average snowfall days in August: 0 days

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 in August /
Average sunshine in August
Bethlehem, IN

Average daylight in August / Average sunshine in August - Bethlehem, IN
  • Average daylight in August: 13h and 4min

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).

  • Average sunshine in August: 9h and 5min

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 in August
Bethlehem, IN

Average sunshine days in August - Bethlehem, IN
  • Average sunshine days in August: 14.3 days

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 in August
Bethlehem, IN

Average UV index in August - Bethlehem, IN
  • Average UV index in August: 6

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 cloud cover in August
Bethlehem, IN

Average cloud cover in August - Bethlehem, IN
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in August
Bethlehem, IN

Average visibility in August - Bethlehem, IN
  • Average visibility in August: 6mi

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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