May weather forecast
Granbury, TX

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Weather in May

The last month of the spring, May, is another warm month in Granbury, Texas, with an average temperature ranging between min 63.5°F (17.5°C) and max 82°F (27.8°C).

Temperature

Granbury observes a slight ascent in average high-temperatures during May, adjusting from 75.9°F (24.4°C) in April to a still warm 82°F (27.8°C). Granbury witnesses a consistent average low-temperature of 63.5°F (17.5°C) throughout May.

Heat index

During May, the heat index is estimated at a tropical 87.8°F (31°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.

Humidity

The most humid month is May, with an average relative humidity of 72%.

Rainfall

May is the month with the most rainfall in Granbury. Rain falls for 13.5 days and accumulates 2.44" (62mm) of precipitation.

Snowfall

January, March through November are months without snowfall in Granbury.

Daylight

In May, the average length of the day is 13h and 50min.
On the first day of May in Granbury, sunrise is at 6:43 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 8:33 pm CDT.

Sunshine

The average sunshine in May is 9.2h.

UV index

In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 6 during May translates into the following directions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 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. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures in Granbury?

The high-temperature in Granbury, Texas, during May is 82°F (27.8°C) and the low-temperature is 63.5°F (17.5°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in May is estimated at 87.8°F (31°C).

What is the most humid month in Granbury?

May is the most humid month, with an average relative humidity of 72%.

What is the average humidity in May in Granbury?

In Granbury, Texas, the average relative humidity in May is 72%.

What is the rainiest month in Granbury?

May is the month with the most rainfall in Granbury, Texas. Rain falls for 13.5 days and accumulates 2.44" (62mm) of precipitation.

How many days does it rain in May in Granbury?

In Granbury, in May, it is raining for 13.5 days, with typically 2.44" (62mm) of accumulated precipitation.

When it does not snow in Granbury?

In Granbury, Texas, snow does not fall in January, March through November.

What is the average length of the day in May in Granbury?

In May, the average day length in Granbury is 13h and 50min.

What time are sunrise and sunset in May in Granbury?

In May, on the first day of the month, sunrise is at 6:43 am and sunset at 8:12 pm. On the last day of the month, in Granbury, sunrise is at 6:24 am and sunset at 8:33 pm CDT.

How long on average sun shines in May in Granbury?

In May, the average sunshine duration in Granbury is 9.2h.

What is the UV index reading in May in Granbury?

The average daily maximum UV index in May in Granbury is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability 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
Granbury, TX

Average temperature in May - Granbury, TX
  • Average high temperature in May: 82°F

The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (56.1°F).

  • Average low temperature in May: 63.5°F

The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

Average pressure in May
Granbury, TX

Average pressure in May - Granbury, TX
  • Average pressure in May: 29.91"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in May
Granbury, TX

Average wind speed in May - Granbury, TX
  • Average wind speed in May: 9.6mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is September (7mph).

Average humidity in May
Granbury, TX

Average humidity in May - Granbury, TX
  • Average humidity in May: 72%

The month with the highest relative humidity is May (72%).
The month with the lowest relative humidity is August (55%).

Average rainfall in May
Granbury, TX

Average rainfall in May - Granbury, TX
  • Average rainfall in May: 2.44"

The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is December (0.71").

Average rainfall days in May
Granbury, TX

Average rainfall days in May - Granbury, TX
  • Average rainfall days in May: 13.5 days

The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (4.8 days).

Average snowfall in May
Granbury, TX

Average snowfall in May - Granbury, TX
  • Average snowfall in May: 0"

The month with the highest snowfall is February (0.39").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").

Average snowfall days in May
Granbury, TX

Average snowfall days in May - Granbury, TX
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Granbury, TX

Average daylight in May / Average sunshine in May - Granbury, 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: 9h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in May
Granbury, TX

Average sunshine days in May - Granbury, TX
  • Average sunshine days in May: 15 days

The month with the most sunshine days is January (25.5 days).
The month with the least sunshine days is May (15 days).

Average UV index in May
Granbury, TX

Average UV index in May - Granbury, TX
  • Average UV index in May: 6

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

Average cloud cover in May
Granbury, TX

Average cloud cover in May - Granbury, TX
  • Average cloud cover in May: 34

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in May
Granbury, TX

Average visibility in May - Granbury, 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).

Granbury, Texas, USA

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