July weather forecast
Blackburn, MO

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Weather in July

July is a tropical summer month in Blackburn, Missouri, with an average temperature varying between 86°F (30°C) and 68°F (20°C).

Temperature

The average temperatures reach their apex in July, averaging 86°F (30°C) at the high end and 68°F (20°C) at the low end.

Heat index

The average heat index in July is estimated at a fiery hot 98.6°F (37°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Heat index evaluations are typically in the context of light winds and shaded environments. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially crucial for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In July, the average relative humidity is 78%.

Rainfall

In Blackburn, in July, it is raining for 13.1 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, there are 108.2 rainfall days, and 12.17" (309mm) of precipitation is accumulated.

Snowfall

April through September are months without snowfall.

Daylight

The average length of the day in July is 14h and 36min.
On the first day of July, sunrise is at 5:52 am and sunset at 8:43 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 8:26 pm CDT.

Sunshine

July has the most sunshine of the year, with an average of 10.4h of sunshine.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 in July translates into this advice:
Prevent overexposure. Protection from the sun's harmful effects is needed. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Frequently asked questions

What is the hottest time of year?

July proves to be the warmest month, recording an average peak temperature of 86°F (30°C) and a minimum temperature of 68°F (20°C).

How hot is it in July?

During July, Blackburn experiences an average high-temperature of 86°F (30°C) and a low-temperature of 68°F (20°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in July is estimated at 98.6°F (37°C).

What is the average humidity in July?

In July, the average relative humidity is 78%.

How many days does it rain in July?

In Blackburn, in July, it is raining for 13.1 days, with typically 1.54" (39mm) of accumulated precipitation.

When it does not snow?

April through September are months without snowfall.

What is the average length of the day in July?

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

When are sunrise and sunset in July?

On the first day of July, sunrise is at 5:52 am and sunset at 8:43 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 8:26 pm CDT.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 10.4h of sunshine.

How many hours of sunshine does Blackburn have in July?

In July, the average sunshine duration is 10.4h.

What are the months with the highest UV index?

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

What is the UV index intensity in July?

In Blackburn, the average daily maximum UV index in July 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
Blackburn, MO

Average temperature in July - Blackburn, MO
  • Average high temperature in July: 86°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in July: 68°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

Average pressure in July
Blackburn, MO

Average pressure in July - Blackburn, MO
  • Average pressure in July: 29.96"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in July
Blackburn, MO

Average wind speed in July - Blackburn, MO
  • Average wind speed in July: 6.4mph

The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.4mph).

Average humidity in July
Blackburn, MO

Average humidity in July - Blackburn, MO
  • Average humidity in July: 78%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).

Average rainfall in July
Blackburn, MO

Average rainfall in July - Blackburn, MO
  • Average rainfall in July: 1.54"

The wettest month (with the highest rainfall) is May (1.89").
The driest month (with the least rainfall) is January (0.39").

Average rainfall days in July
Blackburn, MO

Average rainfall days in July - Blackburn, MO
  • Average rainfall days in July: 13.1 days

The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (3.9 days).

Average snowfall in July
Blackburn, MO

Average snowfall in July - Blackburn, MO
  • Average snowfall in July: 0"

The month with the highest snowfall is February (1.1").
The months with the least snowfall are April, May, June, July, August and September (0").

Average snowfall days in July
Blackburn, MO

Average snowfall days in July - Blackburn, MO
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
Blackburn, MO

Average daylight in July / Average sunshine in July - Blackburn, MO
  • 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

Average sunshine days in July
Blackburn, MO

Average sunshine days in July - Blackburn, MO
  • Average sunshine days in July: 15.3 days

The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is May (14.8 days).

Average UV index in July
Blackburn, MO

Average UV index in July - Blackburn, MO
  • Average UV index in July: 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 July
Blackburn, MO

Average cloud cover in July - Blackburn, MO
  • Average cloud cover in July: 27

The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in July
Blackburn, MO

Average visibility in July - Blackburn, MO
  • 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).

Blackburn, Missouri, USA

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