May weather forecast
Sulphur, OK

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Weather in May

Continuing the spring saga, May introduces a noticeable increase in the relative humidity, touching a high of 78%. The weather holds additional warmth and the city basks in longer sunlight hours, strolling into the boundary of summer. Conversations around the town laud the Chickasaw National Recreation Area's beauty at this time of year, encouraging many to partake in idyllic walks and birdwatching.

Temperature

May's arrival is noted with a slight increase in the average high-temperature, moving from a pleasant 71.1°F (21.7°C) in April to a moderately hot 77.5°F (25.3°C). May witnesses an average nighttime temperature of 60.3°F (15.7°C).

Humidity

The most humid month is May, with an average relative humidity of 78%.

Rainfall

The month with the most rainfall is May, when the rain falls for 14.7 days and typically aggregates up to 4.37" (111mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In May, the average length of the day is 13h and 59min.
On the first day of May, sunrise is at 6:36 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:35 pm CDT.

Sunshine

In May, the average sunshine is 8.5h.

UV index

In May, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 6 in May translates into the following instructions:
Fend off overexposure. Sun protection is vital. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

In Sulphur, 77.5°F (25.3°C) is the average high-temperature and 60.3°F (15.7°C) is the average low-temperature during May.

What is the most humid month?

With an average relative humidity of 78%, May is the most humid month.

What is the average humidity in May?

In Sulphur, the average relative humidity in May is 78%.

What is the rainiest month?

May is the month with the most rainfall. Rain falls for 14.7 days and accumulates 4.37" (111mm) of precipitation.

How many days does it rain in May?

In May, the rain falls for 14.7 days. Throughout May, 4.37" (111mm) of precipitation is accumulated.

When it does not snow?

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

Does it snow in May?

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

How many hours of daylight does Sulphur have in May?

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

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:36 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:35 pm CDT.

How long on average sun shines in May?

In Sulphur, the average sunshine duration in May is 8.5h.

How high is the UV index in May in Sulphur?

In Sulphur, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health risk 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
Sulphur, OK

Average temperature in May - Sulphur, OK
  • Average high temperature in May: 77.5°F

The warmest month (with the highest average high temperature) is August (93.4°F).
The month with the lowest average high temperature is January (50.2°F).

  • Average low temperature in May: 60.3°F

The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

Average pressure in May
Sulphur, OK

Average pressure in May - Sulphur, OK
  • 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 (29.89"Hg).

Average wind speed in May
Sulphur, OK

Average wind speed in May - Sulphur, OK
  • Average wind speed in May: 9.7mph

The windiest months (with the highest average wind speed) are March and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).

Average humidity in May
Sulphur, OK

Average humidity in May - Sulphur, OK
  • Average humidity in May: 78%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (61%).

Average rainfall in May
Sulphur, OK

Average rainfall in May - Sulphur, OK
  • Average rainfall in May: 4.37"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (1.34").

Average rainfall days in May
Sulphur, OK

Average rainfall days in May - Sulphur, OK
  • Average rainfall days in May: 14.7 days

The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in May
Sulphur, OK

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

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

Average snowfall days in May
Sulphur, OK

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

The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in May / Average sunshine in May - Sulphur, 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: 8h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in May
Sulphur, OK

Average sunshine days in May - Sulphur, OK
  • Average sunshine days in May: 14.3 days

The month with the most sunshine days is January (22.9 days).
The month with the least sunshine days is May (14.3 days).

Average UV index in May
Sulphur, OK

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

Average cloud cover in May
Sulphur, OK

Average cloud cover in May - Sulphur, OK
  • Average cloud cover in May: 37

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 21).

Average visibility in May
Sulphur, OK

Average visibility in May - Sulphur, 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).

Sulphur, Oklahoma, USA

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