July weather forecast and climate
Decatur, AL

July, the same as June, in Decatur, Alabama, is a hot summer month, with average temperature fluctuating between 69.4°F (20.8°C) and 88.5°F (31.4°C).

Temperature

The warmest month is July, with an average high-temperature of 88.5°F (31.4°C) and an average low-temperature of 69.4°F (20.8°C).

Heat index

In July, the average heat index is estimated at an extremely hot 105.4°F (40.8°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like pregnancy, metabolic differences, wind, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in July is 76%.

Rainfall

In Decatur, Alabama, in July, during 20 rainfall days, 3.74" (95mm) of precipitation is typically accumulated. Throughout the year, there are 177.6 rainfall days, and 43.11" (1095mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In July, the average length of the day is 14.2h.

Sunshine

In July, the average sunshine is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the warmest month in Decatur?

With an average high-temperature of 88.5°F (31.4°C) and an average low-temperature of 69.4°F (20.8°C), July is the warmest month.

What is the temperature in July in Decatur?

In July, the average high-temperature is 88.5°F (31.4°C), and the average low-temperature is 69.4°F (20.8°C). In July, the average heat index (a.k.a. 'real feel', 'feels like'), that takes the relative humidity and factores it into the air temperature reading, is evaluated at 105.4°F (40.8°C).

What is the average humidity in July in Decatur?

The average relative humidity in July is 76%.

How many days does it rain in July in Decatur?

In Decatur, during July, the rain falls for 20 days and regularly aggregates up to 3.74" (95mm) of precipitation.

When it does not snow in Decatur?

April through October are months without snowfall in Decatur, Alabama.

What is the average length of the day in July in Decatur?

The average length of the day in July in Decatur, Alabama, is 14.2h.

How long on average sun shines in July in Decatur?

In Decatur, Alabama, the average sunshine in July is 10.3h.

What is the month with the highest UV index in Decatur?

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

What is the UV index intensity in July in Decatur?

In July, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in July - Decatur, AL
  • Average high temperature in July: 88.5°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (47.5°F).

  • Average low temperature in July: 69.4°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).

Average pressure in July - Decatur, AL
  • Average pressure in July: 30"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.98").

Average wind speed in July - Decatur, AL
  • Average wind speed in July: 4.8mph

The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).

Average humidity in July - Decatur, AL
  • Average humidity in July: 76%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (72%).

Average rainfall in July - Decatur, AL
  • Average rainfall in July: 3.74"

The wettest month (with the highest rainfall) is December (4.45").
The driest months (with the least rainfall) are September and November (2.48").

Average rainfall days in July - Decatur, AL
  • Average rainfall days in July: 20 days

The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is November (10.4 days).

Average snowfall in July - Decatur, AL
  • Average snowfall in July: 0"

Months with the highest snowfall are January and February (0.55").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in July - Decatur, AL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (2.5 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in July / Average sunshine in July - Decatur, AL
  • Average daylight in July: 14.2h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in July: 10.3h

The month with the most sunshine is June (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average sunshine days in July - Decatur, AL
  • Average sunshine days in July: 8.8 days

The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is July (8.8 days).

Average UV index in July - Decatur, AL
  • Average UV index in July: 6

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January and December (UV index 2).

Average cloud cover in July - Decatur, AL
  • Average cloud cover in July: 33

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in July - Decatur, AL
  • Average visibility in July: 6mi

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