July weather forecastMerrillville, IN
July
Weather in July
July in Merrillville is characterized by the highest temperatures of the year, with an average high temperature peaking to 81.5°F (27.5°C). The hot weather combined with the most extended daylight hours of 14.8 hours catalyzes a full-on summer environment. Barbecues, pool parties and picnics in the park are all punctuated with refreshing summer showers. With warm nights and starry skies, it is the epitome of summer living in Merrillville.Temperature
Temperature readings reach their annual highs in July, averaging 81.5°F (27.5°C) and a minimum average of 65.5°F (18.6°C).Heat index
The heat index value during July is calculated to be a hot 87.8°F (31°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.Heat index data is primarily for areas with shade and subjected to light winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Humidity
In Merrillville, the average relative humidity in July is 80%.Rainfall
In Merrillville, in July, it is raining for 17.6 days, with typically 2.83" (72mm) of accumulated precipitation. Throughout the year, in Merrillville, there are 146.6 rainfall days, and 23.31" (592mm) of precipitation is accumulated.Snowfall
In Merrillville, snow does not fall in May through September.Daylight
In Merrillville, the average length of the day in July is 14h and 50min.On the first day of the month, sunrise is at 5:19 am and sunset at 8:27 pm. On the last day of July, in Merrillville, sunrise is at 5:43 am and sunset at 8:07 pm CDT.
Sunshine
In July, the average sunshine in Merrillville, Indiana, is 9.7h.UV index
The months with the highest UV index are June and July, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 6 during July translates into the following directions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Merrillville, 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 (30°F).
- Average low temperature in July: 65.5°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in July
Merrillville, 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
Merrillville, IN
- Average wind speed in July: 6.4mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in July
Merrillville, IN
- Average humidity in July: 80%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in July
Merrillville, IN
- Average rainfall in July: 2.83"
The wettest month (with the highest rainfall) is June (3.15").
The driest month (with the least rainfall) is November (1.06").
Average rainfall days in July
Merrillville, IN
- Average rainfall days in July: 17.6 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in July
Merrillville, IN
- Average snowfall in July: 0"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Merrillville, IN
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Merrillville, IN
- Average daylight in July: 14h and 48min
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 42min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in July
Merrillville, IN
- Average sunshine days in July: 10.2 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in July
Merrillville, 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
Merrillville, IN
- Average cloud cover in July: 34
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in July
Merrillville, IN
- Average visibility in July: 5mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
