May weather forecast
Newcastle, OK

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Weather in May

The last month of the spring, May, is a moderately hot month in Newcastle, Oklahoma, with an average temperature ranging between min 59.9°F (15.5°C) and max 78.1°F (25.6°C).

Temperature

Newcastle, Oklahoma, experiences a minor temperature shift with the start of May, with average high-temperatures moving from a pleasant 70.9°F (21.6°C) in April to a warm 78.1°F (25.6°C). During the month of May, the temperature generally drops to a low average of 59.9°F (15.5°C).

Humidity

The most humid month is May, with an average relative humidity of 74%.

Rainfall

The month with the most rainfall in Newcastle is May, when the rain falls for 14.6 days and typically aggregates up to 3.82" (97mm) of precipitation.

Snowfall

In Newcastle, snow does not fall in April through October.

Daylight

In May, the average length of the day is 14h and 2min.
On the first day of the month, sunrise is at 6:38 am and sunset at 8:16 pm. On the last day of May, sunrise is at 6:16 am and sunset at 8:39 pm CDT.

Sunshine

In May, the average sunshine is 9.2h.

UV index

In May, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: An average maximum UV index of 6 in May leads to these recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

In May, the average high-temperature and low-temperature are 78.1°F (25.6°C) and 59.9°F (15.5°C) respectively.

What is the most humid month?

With an average relative humidity of 74%, May is the most humid month.

What is the average humidity in May?

In May, the average relative humidity is 74%.

What is the wettest month in Newcastle?

The month with the most rainfall is May, when the rain falls for 14.6 days and typically aggregates up to 3.82" (97mm) of precipitation.

How many days does it rain in May?

In Newcastle, in May, during 14.6 rainfall days, 3.82" (97mm) of precipitation is typically accumulated.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in May?

In Newcastle, the average day length in May is 14h and 2min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:38 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:39 pm CDT.

How long on average sun shines in May?

The average sunshine duration in May is 9.2h.

What is the UV index reading in May?

The average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from 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
Newcastle, OK

Average temperature in May - Newcastle, OK
  • Average high temperature in May: 78.1°F

The warmest month (with the highest average high temperature) is July (93.6°F).
The month with the lowest average high temperature is January (49.1°F).

  • Average low temperature in May: 59.9°F

The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (32°F).

Average pressure in May
Newcastle, OK

Average pressure in May - Newcastle, OK
  • Average pressure in May: 29.9"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in May
Newcastle, OK

Average wind speed in May - Newcastle, OK
  • Average wind speed in May: 10.7mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

Average humidity in May
Newcastle, OK

Average humidity in May - Newcastle, OK
  • Average humidity in May: 74%

The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (59%).

Average rainfall in May
Newcastle, OK

Average rainfall in May - Newcastle, OK
  • Average rainfall in May: 3.82"

The wettest month (with the highest rainfall) is May (3.82").
The driest months (with the least rainfall) are February and December (0.98").

Average rainfall days in May
Newcastle, OK

Average rainfall days in May - Newcastle, OK
  • 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 (4.6 days).

Average snowfall in May
Newcastle, OK

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

The month with the highest snowfall is February (1.1").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May
Newcastle, OK

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

The month with the highest number of snowfall days is February (1.8 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
Newcastle, OK

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

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in May: 9h and 1min

The months with the most sunshine are July and August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).

Average sunshine days in May
Newcastle, OK

Average sunshine days in May - Newcastle, OK
  • Average sunshine days in May: 13.7 days

The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is May (13.7 days).

Average UV index in May
Newcastle, OK

Average UV index in May - Newcastle, 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
Newcastle, OK

Average cloud cover in May - Newcastle, OK
  • Average cloud cover in May: 34

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 18).

Average visibility in May
Newcastle, OK

Average visibility in May - Newcastle, 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).

Newcastle, Oklahoma, USA

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