May weather forecast
Altus, OK

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Weather in May

With May comes the early signs of summer in Altus. The temperature difference is palpable, reaching a high of 82.6°F (28.1°C) from the moderate April weather, heralding the arrival of summer. Longer daylight hours and decreased precipitation herald more opportunities for outdoor activities. Luscious greenery prevails, accompanied by blossoms in a plethora of vibrant colors. Sunsets coat the city in a soothing shade of orange, marking the close of a perfect summer day.

Temperature

As Altus welcomes May, the average high-temperature displays a subtle shift, adjusting from a warm 73.9°F (23.3°C) in April to a still moderately hot 82.6°F (28.1°C). In the month of May, the nighttime temperature in Altus dips to a steady average of 61.5°F (16.4°C).

Heat index

During May, the heat index is computed to be a hot 86°F (30°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.

Humidity

The months with the highest humidity in Altus are May and December, with an average relative humidity of 60%.

Rainfall

May is the month with the most rainfall in Altus. Rain falls for 13.2 days and accumulates 3.35" (85mm) of precipitation.

Snowfall

In Altus, Oklahoma, snow does not fall in May through October.

Daylight

In Altus, the average length of the day in May is 13h and 59min.
On the first day of May in Altus, sunrise is at 6:46 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 8:44 pm CDT.

Sunshine

In May, the average sunshine in Altus is 10.2h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 7 in May interprets into the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

How hot is it in Altus in May?

In Altus, 82.6°F (28.1°C) is the average high-temperature and 61.5°F (16.4°C) is the average low-temperature during May. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in May is computed to be 86°F (30°C).

What are the most humid months in Altus?

The months with the highest humidity in Altus are May and December, with an average relative humidity of 60%.

What is the average humidity in May in Altus?

In Altus, Oklahoma, the average relative humidity in May is 60%.

What is the rainiest month in Altus?

May is the month with the most rainfall in Altus, Oklahoma. Rain falls for 13.2 days and accumulates 3.35" (85mm) of precipitation.

How many days does it rain in May in Altus?

In May, in Altus, Oklahoma, the rain falls for 13.2 days. Throughout May, 3.35" (85mm) of precipitation is accumulated.

When it does not snow in Altus?

In Altus, snow does not fall in May through October.

Does it snow in Altus in May?

In May, in Altus, Oklahoma, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Altus have in May?

In May, the average day length is 13h and 59min.

What time are sunrise and sunset in May in Altus?

On the first day of May, sunrise is at 6:46 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 8:44 pm CDT.

How many hours of sunshine does Altus have in May?

In Altus, Oklahoma, the average sunshine duration in May is 10.2h.

When is the highest UV index in Altus?

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 Altus?

In Altus, the average daily maximum UV index in May is 7. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.
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
Altus, OK

Average temperature in May - Altus, OK
  • Average high temperature in May: 82.6°F

The warmest month (with the highest average high temperature) is July (96.4°F).
The month with the lowest average high temperature is December (51.6°F).

  • Average low temperature in May: 61.5°F

The month with the highest average low temperature is July (76.3°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

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Average pressure in May
Altus, OK

Average pressure in May - Altus, OK
  • Average pressure in May: 29.88"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).

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Average wind speed in May
Altus, OK

Average wind speed in May - Altus, OK
  • Average wind speed in May: 11.4mph

The windiest month (with the highest average wind speed) is April (12.4mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).

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Average humidity in May
Altus, OK

Average humidity in May - Altus, OK
  • Average humidity in May: 60%

The months with the highest relative humidity are May and December (60%).
The month with the lowest relative humidity is August (49%).

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Average rainfall in May
Altus, OK

Average rainfall in May - Altus, OK
  • Average rainfall in May: 3.35"

The wettest month (with the highest rainfall) is May (3.35").
The driest months (with the least rainfall) are February and November (0.75").

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Average rainfall days in May
Altus, OK

Average rainfall days in May - Altus, OK
  • Average rainfall days in May: 13.2 days

The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is January (3.8 days).

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Average snowfall in May
Altus, OK

Average snowfall in May - Altus, OK
  • Average snowfall in May: 0"

The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Altus, OK

Average snowfall days in May - Altus, OK
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Altus, OK

Average daylight in May / Average sunshine in May - Altus, OK
  • Average daylight in May: 14h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in May: 10h and 1min

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

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Average sunshine days in May
Altus, OK

Average sunshine days in May - Altus, OK
  • Average sunshine days in May: 15.2 days

The month with the most sunshine days is January (25.9 days).
The month with the least sunshine days is August (15.1 days).

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Average UV index in May
Altus, OK

Average UV index in May - Altus, OK
  • 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 2).

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Average cloud cover in May
Altus, OK

Average cloud cover in May - Altus, OK
  • Average cloud cover in May: 25

The month with the most cloud cover is March (Cloud cover 29).
The months with the least cloud cover are June and August (Cloud cover 17).

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Average visibility in May
Altus, OK

Average visibility in May - Altus, OK
  • 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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Altus, Oklahoma, USA

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