June weather forecast
Katy, TX

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Weather in June

June, the first month of the summer in Katy, is a tropical month, with an average temperature ranging between min 73.8°F (23.2°C) and max 91°F (32.8°C).

Temperature

As May transitions into June, a subtle temperature shift is observed, with average highs adjusting from a moderately hot 85.5°F (29.7°C) to a tropical 91°F (32.8°C). Throughout the month of June, Katy witnesses an average low-temperature of 73.8°F (23.2°C).

Heat index

June's heat index is evaluated at a life-threatening hot 113°F (45°C). Precaution: Heat cramps along with heat exhaustion are possible. Heatstroke is a serious risk with continued exertion.
Be advised, the heat index considers values for conditions in shade and with a light breeze. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Katy, the average relative humidity in June is 76%.

Rainfall

In Katy, in June, during 17.9 rainfall days, 3.07" (78mm) of precipitation is typically accumulated. In Katy, during the entire year, the rain falls for 169 days and collects up to 30.12" (765mm) of precipitation.

Snowfall

February through November are months without snowfall.

Daylight

June has the longest days of the year, with an average of 14h and 0min of daylight.
On the first day of the month, sunrise is at 6:22 am and sunset at 8:19 pm. On the last day of June, in Katy, sunrise is at 6:26 am and sunset at 8:28 pm CDT.

Sunshine

The average sunshine in June is 9.8h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 7 during June leads to these instructions:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Updated: Jul 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in June?

In Katy, 91°F (32.8°C) is the average high-temperature and 73.8°F (23.2°C) is the average low-temperature during June. In June, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 113°F (45°C).

What is the average humidity in June?

In June, the average relative humidity is 76%.

How many days does it rain in June?

In June, the rain falls for 17.9 days. Throughout June, 3.07" (78mm) of precipitation is accumulated.

When it does not snow?

February through November are months without snowfall.

When are the longest days?

The month with the longest days is June, with an average of 14h and 0min of daylight.

What is the average length of the day in June?

In Katy, the average day length in June is 14h and 2min.

When is the sunrise / sunset in June?

On the first day of June, sunrise is at 6:22 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 8:28 pm CDT.

How many hours of sunshine does Katy have in June?

In June, the average sunshine duration is 9.8h.

What are the months with the highest UV index in Katy?

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

What is the UV index intensity in June?

In Katy, the average daily maximum UV index in June is 7. A UV Index estimate 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 June
Katy, TX

Average temperature in June - Katy, TX
  • Average high temperature in June: 91°F

The warmest month (with the highest average high temperature) is August (94.6°F).
The month with the lowest average high temperature is January (61°F).

  • Average low temperature in June: 73.8°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (45°F).

Average pressure in June
Katy, TX

Average pressure in June - Katy, TX
  • Average pressure in June: 29.93"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in June
Katy, TX

Average wind speed in June - Katy, TX
  • Average wind speed in June: 6.5mph

The windiest month (with the highest average wind speed) is April (8.4mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).

Average humidity in June
Katy, TX

Average humidity in June - Katy, TX
  • Average humidity in June: 76%

The months with the highest relative humidity are February and March (78%).
The months with the lowest relative humidity are August and October (71%).

Average rainfall in June
Katy, TX

Average rainfall in June - Katy, TX
  • Average rainfall in June: 3.07"

The wettest month (with the highest rainfall) is May (4.29").
The driest month (with the least rainfall) is February (1.42").

Average rainfall days in June
Katy, TX

Average rainfall days in June - Katy, TX
  • Average rainfall days in June: 17.9 days

The month with the highest number of rainy days is September (18.8 days).
The month with the least rainy days is January (10.5 days).

Average snowfall in June
Katy, TX

Average snowfall in June - Katy, TX
  • Average snowfall in June: 0"

The month with the highest snowfall is December (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

Average snowfall days in June
Katy, TX

Average snowfall days in June - Katy, TX
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in June /
Average sunshine in June
Katy, TX

Average daylight in June / Average sunshine in June - Katy, TX
  • Average daylight in June: 14h and 0min

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

  • Average sunshine in June: 9h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

Average sunshine days in June
Katy, TX

Average sunshine days in June - Katy, TX
  • Average sunshine days in June: 10.1 days

The month with the most sunshine days is January (18.7 days).
The month with the least sunshine days is September (8.9 days).

Average UV index in June
Katy, TX

Average UV index in June - Katy, TX
  • Average UV index in June: 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 June
Katy, TX

Average cloud cover in June - Katy, TX
  • Average cloud cover in June: 35

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in June
Katy, TX

Average visibility in June - Katy, TX
  • Average visibility in June: 6mi

The months with the highest visibility are January, February, March, June, August, September, October, November and December (6mi).
The months with the lowest visibility are April, May and July (5mi).

Katy, Texas, USA

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