May weather forecast
Houston, DE

Share

Weather in May

May, the last month of the spring in Houston, is a pleasant month, with an average temperature ranging between max 70°F (21.1°C) and min 57°F (13.9°C).

Temperature

Houston in May sees a temperature change, with average high-temperatures moving from a refreshing 60.6°F (15.9°C) in April to an agreeable 70°F (21.1°C). Throughout May, the average low-temperature dips to a moderate 57°F (13.9°C).

Humidity

May is the most humid month in Houston, with an average relative humidity of 80%.

Rainfall

In Houston, in May, it is raining for 16.1 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, there are 152.4 rainfall days, and 25.94" (659mm) of precipitation is accumulated.

Snowfall

January through March, May, November and December are months with snowfall. May is the first month it typically snows. Throughout May, in the average 0.1 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 10.4 snowfall days, and 4.29" (109mm) of snow is accumulated.

Daylight

In Houston, the average length of the day in May is 14h and 19min.
On the first day of May, sunrise is at 6:03 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:21 pm EDT.

Sunshine

In May, the average sunshine is 9.1h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A daily high UV index of 6 in May leads to these guidelines:
Resist overexposure. Safeguarding from solar damage is indispensable. 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. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Houston in May?

During May, Houston experiences an average high-temperature of 70°F (21.1°C) and a low-temperature of 57°F (13.9°C).

What is the most humid month?

With an average relative humidity of 80%, May is the most humid month.

What is the average humidity in May?

In May, the average relative humidity is 80%.

How many days does it rain in May?

In Houston, during May, the rain falls for 16.1 days and regularly aggregates up to 2.28" (58mm) of precipitation.

When does it start snowing?

May is the first month it typically snows. Throughout May, in the average 0.1 snowfall days, it receives 0.12" (3mm) of snow.

How many hours of daylight does Houston have in May?

In Houston, the average day length in May is 14h and 19min.

When are sunrise and sunset in May?

On the first day of May, sunrise is at 6:03 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:21 pm EDT.

How many hours of sunshine does Houston have in May?

The average sunshine duration in May is 9.1h.

What are the months with the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Houston.

What is the UV index intensity in May?

The average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health 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
Houston, DE

Average temperature in May - Houston, DE
  • Average high temperature in May: 70°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in May: 57°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure in May
Houston, DE

Average pressure in May - Houston, DE
  • Average pressure in May: 30.02"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in May
Houston, DE

Average wind speed in May - Houston, DE
  • Average wind speed in May: 8.6mph

The windiest month (with the highest average wind speed) is February (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in May
Houston, DE

Average humidity in May - Houston, DE
  • Average humidity in May: 80%

The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January and November (74%).

Average rainfall in May
Houston, DE

Average rainfall in May - Houston, DE
  • Average rainfall in May: 2.28"

The wettest month (with the highest rainfall) is August (3.07").
The driest month (with the least rainfall) is January (1.5").

Average rainfall days in May
Houston, DE

Average rainfall days in May - Houston, DE
  • Average rainfall days in May: 16.1 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.4 days).

Average snowfall in May
Houston, DE

Average snowfall in May - Houston, DE
  • Average snowfall in May: 0.12"

The month with the highest snowfall is January (1.22").
The months with the least snowfall are April, June, July, August, September and October (0").

Average snowfall days in May
Houston, DE

Average snowfall days in May - Houston, DE
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are April, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Houston, DE

Average daylight in May / Average sunshine in May - Houston, DE
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in May: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in May
Houston, DE

Average sunshine days in May - Houston, DE
  • Average sunshine days in May: 12.3 days

The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is July (11.6 days).

Average UV index in May
Houston, DE

Average UV index in May - Houston, DE
  • Average UV index in May: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in May
Houston, DE

Average cloud cover in May - Houston, DE
  • Average cloud cover in May: 40

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in May
Houston, DE

Average visibility in May - Houston, DE
  • 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).

Houston, Delaware, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location