May weather forecast
Robert Lee, TX

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Weather in May

The last month of the spring, May, is a hot month in Robert Lee, Texas, with an average temperature fluctuating between 86.5°F (30.3°C) and 64°F (17.8°C).

Temperature

The embrace of May brings a minor uplift in the average high-temperature, shifting from a moderately hot 80.2°F (26.8°C) in April to a tropical 86.5°F (30.3°C). Despite substantial daily fluctuations, the average low-temperature is a comfortable 64°F (17.8°C) during May.

Heat index

May's average heat index is computed to be a hot 89.6°F (32°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.
Always consider that heat index estimations are for light winds and places in the shade. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

In May, the average relative humidity is 54%.

Rainfall

May is the month with the most rainfall in Robert Lee. Rain falls for 11.4 days and accumulates 2.56" (65mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In May, the average length of the day is 13h and 48min.
On the first day of the month, sunrise is at 6:55 am and sunset at 8:22 pm. On the last day of May, sunrise is at 6:36 am and sunset at 8:42 pm CDT.

Sunshine

The average sunshine in May is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index, 7 during May, leads to the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. 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.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in May?

In May, in Robert Lee, the average high-temperature is 86.5°F (30.3°C), and the average low-temperature is 64°F (17.8°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in May is computed to be 89.6°F (32°C).

What is the average humidity in May?

The average relative humidity in May is 54%.

What is the wettest month?

May is the month with the most rainfall. Rain falls for 11.4 days and accumulates 2.56" (65mm) of precipitation.

How many days does it rain in May?

In May, the rain falls for 11.4 days. Throughout May, 2.56" (65mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in May?

In Robert Lee, the average day length in May is 13h and 48min.

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:55 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 8:42 pm CDT.

How many hours of sunshine does Robert Lee have in May?

In May, the average sunshine duration in Robert Lee is 10.3h.

When is the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 7.

How high is the UV index in May?

In May, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to 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 May
Robert Lee, TX

Average temperature in May - Robert Lee, TX
  • Average high temperature in May: 86.5°F

The warmest month (with the highest average high temperature) is August (95.5°F).
The months with the lowest average high temperature are January and December (57.4°F).

  • Average low temperature in May: 64°F

The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).

Average pressure in May
Robert Lee, TX

Average pressure in May - Robert Lee, TX
  • Average pressure in May: 29.87"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in May
Robert Lee, TX

Average wind speed in May - Robert Lee, TX
  • Average wind speed in May: 12.8mph

The windiest month (with the highest average wind speed) is April (13.5mph).
The calmest month (with the lowest average wind speed) is September (9.7mph).

Average humidity in May
Robert Lee, TX

Average humidity in May - Robert Lee, TX
  • Average humidity in May: 54%

The months with the highest relative humidity are September and November (57%).
The month with the lowest relative humidity is August (46%).

Average rainfall in May
Robert Lee, TX

Average rainfall in May - Robert Lee, TX
  • Average rainfall in May: 2.56"

The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in May
Robert Lee, TX

Average rainfall days in May - Robert Lee, TX
  • Average rainfall days in May: 11.4 days

The month with the highest number of rainy days is May (11.4 days).
The month with the least rainy days is January (3.6 days).

Average snowfall in May
Robert Lee, TX

Average snowfall in May - Robert Lee, TX
  • Average snowfall in May: 0"

The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May
Robert Lee, TX

Average snowfall days in May - Robert Lee, TX
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Robert Lee, TX

Average daylight in May / Average sunshine in May - Robert Lee, TX
  • Average daylight in May: 13h and 5min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in May: 10h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

Average sunshine days in May
Robert Lee, TX

Average sunshine days in May - Robert Lee, TX
  • Average sunshine days in May: 17.2 days

The month with the most sunshine days is January (26.3 days).
The month with the least sunshine days is September (16.1 days).

Average UV index in May
Robert Lee, TX

Average UV index in May - Robert Lee, TX
  • Average UV index in May: 7

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in May
Robert Lee, TX

Average cloud cover in May - Robert Lee, TX
  • Average cloud cover in May: 25

The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 16).

Average visibility in May
Robert Lee, TX

Average visibility in May - Robert Lee, TX
  • Average visibility in May: 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).

Robert Lee, Texas, USA

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