September weather forecastReforma, Mexico

Weather in September

September, the first month of the autumn in Reforma, is also a hot month, with temperature in the range of an average high of 31.4°C (88.5°F) and an average low of 21°C (69.8°F).

Temperature

The arrival of September records an average high-temperature of a still hot 31.4°C (88.5°F), closely related to the 32.4°C (90.3°F) observed in August. During the month of September, the nighttime temperature in Reforma falls to an average of 21°C (69.8°F).

Heat index

For September, the heat index is evaluated at an extremely hot 44°C (111.2°F). Stay on guard: Heat exhaustion and heat cramps are predicted. Ongoing effort can cause heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

September through November, with an average relative humidity of 85%, are the most humid months.

Rainfall

In September, the rain falls for 23.1 days. Throughout September, 175mm (6.89") of precipitation is accumulated. Throughout the year, in Reforma, there are 206.7 rainfall days, and 1325mm (52.17") of precipitation is accumulated.

Daylight

In Reforma, the average length of the day in September is 12h and 14min.
On the first day of September, sunrise is at 5:58 am and sunset at 6:26 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 6:01 pm CST.

Sunshine

In September, the average sunshine is 8.4h.

UV index

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 6 in September translates into this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.