July weather forecast and climate
Piedras Negras, Mexico

July, like June, in Piedras Negras, Mexico, is another sweltering summer month, with average temperature fluctuating between 36.7°C (98.1°F) and 25.5°C (77.9°F).

Temperature

In July, the average high-temperature is almost the same as in June - a still very hot 36.7°C (98.1°F). The average low-temperature, in July, is 25.5°C (77.9°F).

Heat index

In July, the average heat index is estimated at an extremely hot 45°C (113°F). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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', 'real feel', 'feels like', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, wind, differences in body mass, height, and shape). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In Piedras Negras, the average relative humidity in July is 50%.

Rainfall

In Piedras Negras, in July, it is raining for 8.4 days, with typically 28mm (1.1") of accumulated precipitation. In Piedras Negras, Mexico, during the entire year, the rain falls for 89.7 days and collects up to 341mm (13.43") of precipitation.

Snowfall

In Piedras Negras snow does not fall in January through November.

Daylight

In Piedras Negras, the average length of the day is 13.8h.

Sunshine

The average sunshine in July is 10.9h.

UV index

Months with the highest UV index in Piedras Negras are June through August, with an average maximum UV index of 8. A UV Index value of 8 to 10 symbolizes a very high threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 8 interpret into the following advice:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in July in Piedras Negras?

The average high-temperature, in July, in Piedras Negras, Mexico, is 36.7°C (98.1°F), while the average low-temperature is 25.5°C (77.9°F). In July, the average heat index (a.k.a. 'real feel', 'feels like'), that combines both air temperature and relative humidity, is evaluated at 45°C (113°F).

What is the average humidity in July in Piedras Negras?

The average relative humidity in July is 50%.

How much does it rain in Piedras Negras in July?

In Piedras Negras, Mexico, during July, the rain falls for 8.4 days and regularly aggregates up to 28mm (1.1") of precipitation.

When it does not snow in Piedras Negras?

In Piedras Negras, Mexico, snow does not fall in January through November.

How many hours of daylight does Piedras Negras have in July?

In Piedras Negras, Mexico, the average length of the day in July is 13.8h.

How long on average sun shines in July in Piedras Negras?

In Piedras Negras, Mexico, the average sunshine in July is 10.9h.

What is the month with the highest UV index in Piedras Negras?

Months with the highest UV index in Piedras Negras are June through August, with an average maximum UV index of 8.

What is the UV index reading in July in Piedras Negras?

In Piedras Negras, Mexico, the average daily maximum UV index in July is 8. A UV Index estimate of 8 to 10 represents a very high health risk from the exposure to the Sun's UV radiation.
Average temperature in July - Piedras Negras, Mexico
  • Average high temperature in July: 36.7°C

The warmest month (with the highest average high temperature) is August (37.2°C).
The month with the lowest average high temperature is January (18.3°C).

  • Average low temperature in July: 25.5°C

The month with the highest average low temperature is August (26.3°C).
The coldest month (with the lowest average low temperature) is January (8.3°C).

Average pressure in July - Piedras Negras, Mexico
  • Average pressure in July: 1013.4mbar

The month with the highest atmospheric pressure is January (1020.7mbar).
The month with the lowest atmospheric pressure is May (1011.6mbar).

Average wind speed in July - Piedras Negras, Mexico
  • Average wind speed in July: 18.1km/h

The windiest month (with the highest average wind speed) is June (18.8km/h).
The calmest month (with the lowest average wind speed) is December (12.4km/h).

Average humidity in July - Piedras Negras, Mexico
  • Average humidity in July: 50%

The month with the highest relative humidity is November (60%).
The month with the lowest relative humidity is August (47%).

Average rainfall in July - Piedras Negras, Mexico
  • Average rainfall in July: 28mm

The wettest month (with the highest rainfall) is May (75mm).
The driest months (with the least rainfall) are January and February (8mm).

Average rainfall days in July - Piedras Negras, Mexico
  • Average rainfall days in July: 8.4 days

The month with the highest number of rainy days is September (13.8 days).
The month with the least rainy days is January (4.3 days).

Average snowfall in July - Piedras Negras, Mexico
  • Average snowfall in July: 0mm

The month with the highest snowfall is December (1mm).
Months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0mm).

Average snowfall days in July - Piedras Negras, Mexico
  • Average snowfall days in July: 0 days

Months with the highest number of snowfall days are January, February and December (0.1 days).
Months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in July / Average sunshine in July - Piedras Negras, Mexico
  • Average daylight in July: 13.8h

The month with the longest days is June (Average daylight: 14h).
The month with the shortest days is December (Average daylight: 10.3h).

  • Average sunshine in July: 10.9h

The month with the most sunshine is June (Average sunshine: 11.1h).
The month with the least sunshine is November (Average sunshine: 6h).

Average sunshine days in July - Piedras Negras, Mexico
  • Average sunshine days in July: 21.2 days

The month with the most sunshine days is January (25.6 days).
The month with the least sunshine days is September (14.7 days).

Average UV index in July - Piedras Negras, Mexico
  • Average UV index in July: 8

Months with the highest UV index are June, July and August (UV index 8).
Months with the lowest UV index are January and December (UV index 4).

Average cloud cover in July - Piedras Negras, Mexico
  • Average cloud cover in July: 19

The month with the most cloud cover is May (Cloud cover 32).
The month with the least cloud cover is August (Cloud cover 16).

Average visibility in July - Piedras Negras, Mexico
  • Average visibility in July: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).