May weather forecast
Rosenberg, TX

The last month of the spring, May, is also a moderately hot month in Rosenberg, Texas, with an average temperature varying between 68°F (20°C) and 85.3°F (29.6°C).

Temperature

In Rosenberg, the average high-temperature in May slightly rises, from a moderately hot 78.4°F (25.8°C) in April, to a still warm 85.3°F (29.6°C). Throughout May, the average low-temperature in Rosenberg dips to a pleasant 68°F (20°C).

Heat index

The heat index value during May is computed to be a torrid 96.8°F (36°C). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In Rosenberg, the average relative humidity in May is 78%.

Rainfall

In May, in Rosenberg, the rain falls for 9.9 days. Throughout May, 1.54" (39mm) of precipitation is accumulated. In Rosenberg, during the entire year, the rain falls for 120.1 days and collects up to 12.01" (305mm) of precipitation.

Snowfall

March through December are months without snowfall.

Daylight

In May, the average length of the day is 13h and 38min.
On the first day of the month, sunrise is at 6:40 am and sunset at 8:00 pm. On the last day of May, in Rosenberg, sunrise is at 6:23 am and sunset at 8:18 pm CDT.

Sunshine

In May, the average sunshine in Rosenberg is 8.9h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index, 7 during May, leads to the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. 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.