May weather forecast
Plano, TX

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Weather in May

As summer draws closer, May in Plano experiences a notable rise in temperatures, swinging between 64.2°F (17.9°C) to 81.5°F (27.5°C). This transition is marked by a gradual reduction in wind speed, making the airfeel warmer. Cloud cover reduces slightly, paving way for more sunlight and longer days. Although the relative humidity stays marginally high, tempering the heat to some extent. May's ultimate days tick the countdown for the anticipated summer heatwave in Plano.

Temperature

The coming of May brings a minor shift in Plano's weather, with average high-temperatures adjusting from April's moderately hot 73.9°F (23.3°C) to a still warm 81.5°F (27.5°C). In Plano, in May, the average low-temperature is a comfortable 64.2°F (17.9°C).

Heat index

May's heat index is estimated at a hot 86°F (30°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.
Understand that the heat index values take into account shaded locations and mild winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.

Humidity

The most humid month in Plano is May, with an average relative humidity of 73%.

Rainfall

In Plano, during May, the rain falls for 14.6 days and regularly aggregates up to 4.02" (102mm) of precipitation. In Plano, during the entire year, the rain falls for 143 days and collects up to 33.15" (842mm) of precipitation.

Snowfall

In Plano, snow does not fall in March through October.

Daylight

The average length of the day in May in Plano, Texas, is 13h and 52min.
On the first day of May, sunrise is at 6:38 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 8:30 pm CDT.

Sunshine

In May, the average sunshine in Plano, Texas, is 8.8h.

UV index

In May, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, a daily maximum UV index of 6 leads to the following instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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Frequently asked questions

What are May temperatures in Plano?

The high-temperature, in May, in Plano, is 81.5°F (27.5°C), while the low-temperature averages to 64.2°F (17.9°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, in May is estimated at 86°F (30°C).

What is the most humid month in Plano?

With an average relative humidity of 73%, May is the most humid month in Plano, Texas.

What is the average humidity in May in Plano?

In Plano, the average relative humidity in May is 73%.

How much does it rain in Plano in May?

In Plano, in May, during 14.6 rainfall days, 4.02" (102mm) of precipitation is typically accumulated.

When it does not snow in Plano?

In Plano, snow does not fall in March through October.

How many hours of daylight does Plano have in May?

In Plano, the average day length in May is 13h and 52min.

When is the sunrise / sunset in May in Plano?

On the first day of May in Plano, sunrise is at 6:38 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 8:30 pm CDT.

How many hours of sunshine does Plano have in May?

The average sunshine duration in May in Plano, Texas, is 8.8h.

How high is the UV index in May in Plano?

The average daily maximum UV index in May in Plano, Texas, is 6. A UV Index value of 6 to 7 symbolizes a high health risk 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
Plano, TX

Average temperature in May - Plano, TX
  • Average high temperature in May: 81.5°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 (54°F).

  • Average low temperature in May: 64.2°F

The month with the highest average low temperature is July (76.1°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).

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Average pressure in May
Plano, TX

Average pressure in May - Plano, TX
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Plano, TX

Average wind speed in May - Plano, TX
  • Average wind speed in May: 9.1mph

The windiest months (with the highest average wind speed) are March and April (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).

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Average humidity in May
Plano, TX

Average humidity in May - Plano, TX
  • Average humidity in May: 73%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (56%).

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Average rainfall in May
Plano, TX

Average rainfall in May - Plano, TX
  • Average rainfall in May: 4.02"

The wettest month (with the highest rainfall) is October (4.21").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days in May
Plano, TX

Average rainfall days in May - Plano, TX
  • Average rainfall days in May: 14.6 days

The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (7.1 days).

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Average snowfall in May
Plano, TX

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

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

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Average snowfall days in May
Plano, TX

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

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in May: 8h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in May
Plano, TX

Average sunshine days in May - Plano, TX
  • Average sunshine days in May: 14.4 days

The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is April (13.9 days).

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Average UV index in May
Plano, TX

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

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

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Average cloud cover in May
Plano, TX

Average cloud cover in May - Plano, TX
  • Average cloud cover in May: 36

The months with the most cloud cover are February and March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in May
Plano, TX

Average visibility in May - Plano, 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).

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Plano, Texas, USA

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