July weather forecast
Sullivan, IN

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Weather in July

July, the same as June, is a moderately hot summer month in Sullivan, Indiana, with temperature in the range of an average low of 66.7°F (19.3°C) and an average high of 83.7°F (28.7°C).

Temperature

In Sullivan, the peak temperatures are generally noted in July, averaging a high of 83.7°F (28.7°C) and a low of 66.7°F (19.3°C).

Heat index

For July, the heat index is calculated to be a tropical 93.2°F (34°C). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

The most humid month is July, with an average relative humidity of 82%.

Rainfall

In Sullivan, in July, during 16.5 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, there are 150.1 rainfall days, and 28.5" (724mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In July, the average length of the day in Sullivan is 14h and 36min.
On the first day of the month, sunrise is at 6:27 am and sunset at 9:19 pm. On the last day of July, sunrise is at 6:49 am and sunset at 9:02 pm EDT.

Sunshine

In July, the average sunshine is 10.2h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 6 during July translates into the following directions:
Shun overexposure. Protection from sun ravages is indispensable. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Updated: Jul 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest?

The temperatures reach their highest averages in July, with highs of 83.7°F (28.7°C) and lows of 66.7°F (19.3°C).

Is it hot during July?

In Sullivan, 83.7°F (28.7°C) is the average high-temperature and 66.7°F (19.3°C) is the average low-temperature during July. 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 calculated to be 93.2°F (34°C).

What is the most humid month?

The most humid month is July, with an average relative humidity of 82%.

What is the average humidity in July?

In Sullivan, the average relative humidity in July is 82%.

How much does it rain in July?

In July, the rain falls for 16.5 days. Throughout July, 2.68" (68mm) of precipitation is accumulated.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in July?

In July, the average day length in Sullivan is 14h and 36min.

When is the sunrise / sunset in July?

In July, on the first day of the month, sunrise is at 6:27 am and sunset at 9:19 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 9:02 pm EDT.

How long on average sun shines in July?

The average sunshine duration in July is 10.2h.

What are the months with the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index reading in July?

In July, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's 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 July
Sullivan, IN

Average temperature in July - Sullivan, IN
  • Average high temperature in July: 83.7°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in July: 66.7°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

Average pressure in July
Sullivan, IN

Average pressure in July - Sullivan, IN
  • Average pressure in July: 29.98"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in July
Sullivan, IN

Average wind speed in July - Sullivan, IN
  • Average wind speed in July: 5.8mph

The windiest months (with the highest average wind speed) are January and February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in July
Sullivan, IN

Average humidity in July - Sullivan, IN
  • Average humidity in July: 82%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).

Average rainfall in July
Sullivan, IN

Average rainfall in July - Sullivan, IN
  • Average rainfall in July: 2.68"

The wettest month (with the highest rainfall) is April (4.06").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in July
Sullivan, IN

Average rainfall days in July - Sullivan, IN
  • Average rainfall days in July: 16.5 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.5 days).

Average snowfall in July
Sullivan, IN

Average snowfall in July - Sullivan, IN
  • Average snowfall in July: 0"

The month with the highest snowfall is January (2.13").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in July
Sullivan, IN

Average snowfall days in July - Sullivan, IN
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in July /
Average sunshine in July
Sullivan, IN

Average daylight in July / Average sunshine in July - Sullivan, IN
  • Average daylight in July: 14h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in July: 10h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).

Average sunshine days in July
Sullivan, IN

Average sunshine days in July - Sullivan, IN
  • Average sunshine days in July: 11.6 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.1 days).

Average UV index in July
Sullivan, IN

Average UV index in July - Sullivan, IN
  • Average UV index in July: 6

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, November and December (UV index 2).

Average cloud cover in July
Sullivan, IN

Average cloud cover in July - Sullivan, IN
  • Average cloud cover in July: 31

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in July
Sullivan, IN

Average visibility in July - Sullivan, IN
  • Average visibility in July: 6mi

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).

Sullivan, Indiana, USA

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