August weather forecast
Saint John, IN

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Weather in August

August, the last month of the summer in Saint John, is another warm month, with an average temperature fluctuating between 63.7°F (17.6°C) and 79.7°F (26.5°C).

Temperature

Saint John sees the arrival of August with an average high-temperature of a still moderately hot 79.7°F (26.5°C), indicating a subtle variation from July. Saint John, in August, observes a steady average low-temperature of 63.7°F (17.6°C).

Humidity

In Saint John, Indiana, the average relative humidity in August is 80%.

Rainfall

In August, the rain falls for 15.7 days. Throughout August, 2.24" (57mm) of precipitation is accumulated. Throughout the year, in Saint John, there are 143.5 rainfall days, and 21.02" (534mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Saint John, Indiana.

Daylight

In August, the average length of the day in Saint John is 13h and 47min.
On the first day of the month, sunrise is at 5:45 am and sunset at 8:06 pm. On the last day of August, in Saint John, sunrise is at 6:15 am and sunset at 7:24 pm CDT.

Sunshine

July and August, with an average of 9.9h of sunshine, are months with the most sunshine in Saint John.

UV index

In August, the average daily maximum UV index in Saint John, Indiana, is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A typical high UV index of 5 in August suggests the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature in Saint John?

In Saint John, in August, the average high-temperature is 79.7°F (26.5°C), and the average low-temperature is 63.7°F (17.6°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 87.8°F (31°C).

What is the average humidity in August in Saint John?

The average relative humidity in August in Saint John, Indiana, is 80%.

How many days does it rain in August in Saint John?

In Saint John, in August, it is raining for 15.7 days, with typically 2.24" (57mm) of accumulated precipitation.

When it does not snow in Saint John?

In Saint John, Indiana, snow does not fall in May through October.

How many hours of daylight does Saint John have in August?

The average day length in August in Saint John, Indiana, is 13h and 47min.

What time are sunrise and sunset in August in Saint John?

On the first day of August, sunrise is at 5:45 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:24 pm CDT.

What are the months with the most sunshine in Saint John?

The months with the most sunshine are July and August, with an average of 9.9h of sunshine.

How many hours of sunshine does Saint John have in August?

The average sunshine duration in August in Saint John is 9.9h.

What is the UV index intensity in August in Saint John?

In Saint John, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
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
Saint John, IN

Average temperature in August - Saint John, IN
  • Average high temperature in August: 79.7°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in August: 63.7°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in August
Saint John, IN

Average pressure in August - Saint John, IN
  • Average pressure in August: 29.98"Hg

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

Average wind speed in August
Saint John, IN

Average wind speed in August - Saint John, IN
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in August
Saint John, IN

Average humidity in August - Saint John, IN
  • Average humidity in August: 80%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).

Average rainfall in August
Saint John, IN

Average rainfall in August - Saint John, IN
  • Average rainfall in August: 2.24"

The wettest month (with the highest rainfall) is May (2.83").
The driest months (with the least rainfall) are February and November (0.98").

Average rainfall days in August
Saint John, IN

Average rainfall days in August - Saint John, IN
  • Average rainfall days in August: 15.7 days

The month with the highest number of rainy days is July (17.6 days).
The months with the least rainy days are January and February (5.3 days).

Average snowfall in August
Saint John, IN

Average snowfall in August - Saint John, IN
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.87").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Saint John, IN

Average snowfall days in August - Saint John, IN
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Saint John, IN

Average daylight in August / Average sunshine in August - Saint John, IN
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in August: 9h and 5min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in August
Saint John, IN

Average sunshine days in August - Saint John, IN
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is July (10.5 days).

Average UV index in August
Saint John, IN

Average UV index in August - Saint John, IN
  • Average UV index in August: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in August
Saint John, IN

Average cloud cover in August - Saint John, IN
  • Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in August
Saint John, IN

Average visibility in August - Saint John, IN
  • Average visibility in August: 6mi

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

Saint John, Indiana, USA

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