July weather forecast
Saint John, IN

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Weather in July

July, the same as June, is another warm summer month in Saint John, Indiana, with an average temperature varying between 65.3°F (18.5°C) and 81.5°F (27.5°C).

Temperature

With its high average temperature of 81.5°F (27.5°C) and a low of 65.3°F (18.5°C), July is regarded as the warmest month.

Heat index

The heat index value for July is evaluated at a tropical 87.8°F (31°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. 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. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.

Humidity

In Saint John, the average relative humidity in July is 81%.

Rainfall

In Saint John, Indiana, during July, the rain falls for 17.6 days and regularly aggregates up to 2.48" (63mm) of precipitation. Throughout the year, in Saint John, Indiana, there are 143.5 rainfall days, and 21.02" (534mm) of precipitation is accumulated.

Snowfall

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

Daylight

In July, the average length of the day is 14h and 49min.
On the first day of July in Saint John, sunrise is at 5:20 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:07 pm CDT.

Sunshine

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

UV index

June and July, with an average maximum UV index of 6, are months with the highest UV index in Saint John. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 6 during July leads to these advisories:
Resist extreme sun exposure. Guarding against solar damage is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year in Saint John?

Saint John's warmest weather arrives in July, when temperatures average a high of 81.5°F (27.5°C) and a low of 65.3°F (18.5°C).

What is the usual temperature for Saint John in July?

During July, Saint John experiences an average high-temperature of 81.5°F (27.5°C) and a low-temperature of 65.3°F (18.5°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 July in Saint John?

In July, the average relative humidity in Saint John, Indiana, is 81%.

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

In Saint John, Indiana, in July, it is raining for 17.6 days, with typically 2.48" (63mm) of accumulated precipitation.

When it does not snow in Saint John?

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

What is the average length of the day in July in Saint John?

The average day length in July in Saint John, Indiana, is 14h and 49min.

When are sunrise and sunset in July in Saint John?

In July, on the first day of the month, sunrise is at 5:20 am and sunset at 8:27 pm. On the last day of the month, in Saint John, sunrise is at 5:44 am and sunset at 8:07 pm CDT.

What is the month with the most sunshine in Saint John?

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

How long on average sun shines in July in Saint John?

In July, the average sunshine duration is 9.9h.

What are the months with the highest UV index in Saint John?

June and July, with an average maximum UV index of 6, are months with the highest UV index in Saint John, Indiana.

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

The average daily maximum UV index in July in Saint John is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe 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 July
Saint John, IN

Average temperature in July - Saint John, IN
  • Average high temperature in July: 81.5°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 July: 65.3°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 July
Saint John, IN

Average pressure in July - Saint John, IN
  • Average pressure in July: 29.97"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 July
Saint John, IN

Average wind speed in July - Saint John, IN
  • Average wind speed in July: 6.3mph

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 July
Saint John, IN

Average humidity in July - Saint John, IN
  • Average humidity in July: 81%

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

Average rainfall in July
Saint John, IN

Average rainfall in July - Saint John, IN
  • Average rainfall in July: 2.48"

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 July
Saint John, IN

Average rainfall days in July - Saint John, IN
  • Average rainfall days in July: 17.6 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 July
Saint John, IN

Average snowfall in July - Saint John, IN
  • Average snowfall in July: 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 July
Saint John, IN

Average snowfall days in July - Saint John, IN
  • Average snowfall days in July: 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 July /
Average sunshine in July
Saint John, IN

Average daylight in July / Average sunshine in July - Saint John, IN
  • Average daylight in July: 14h 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 July: 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 July
Saint John, IN

Average sunshine days in July - Saint John, IN
  • Average sunshine days in July: 10.5 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 July
Saint John, IN

Average UV index in July - Saint John, IN
  • Average UV index in July: 6

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 July
Saint John, IN

Average cloud cover in July - Saint John, IN
  • Average cloud cover in July: 33

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 July
Saint John, IN

Average visibility in July - Saint John, IN
  • Average visibility in July: 5mi

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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