December weather forecast
May, OK

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Weather in December

December, the first month of the winter in May, is still a chilly month, with an average temperature fluctuating between 31.6°F (-0.2°C) and 46.9°F (8.3°C).

Temperature

In May, the month of December registers the lowest temperatures, averaging 46.9°F (8.3°C) at the peak and 31.6°F (-0.2°C) at the lowest.

Humidity

In December, the average relative humidity in May is 59%.

Rainfall

In May, in December, during 3.7 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. Throughout the year, there are 96.5 rainfall days, and 16.46" (418mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In May, during December, snow falls for 2.5 days and regularly aggregates up to 0.59" (15mm) of snow. In May, during the entire year, snow falls for 11.3 days and aggregates up to 5.24" (133mm) of snow.

Daylight

With an average of 9h and 42min of daylight, December has the shortest days of the year in May.
On the first day of December in May, sunrise is at 7:33 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 5:33 pm CST.

Sunshine

The month with the least sunshine is December, with an average of 6.5h of sunshine.

UV index

With an average maximum UV index of 2, December is the month with the lowest UV index in May, Oklahoma. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 2 in December translates into these instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Avoiding the Sun during its peak radiation time around midday is a healthy practice. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Frequently asked questions

What part of the year is the coldest in May?

December, having an average high-temperature of 46.9°F (8.3°C) and an average low-temperature of 31.6°F (-0.2°C), is the coldest month in May, Oklahoma.

What are December temperatures in May?

The average high-temperature and low-temperature in May during December are 46.9°F (8.3°C) and 31.6°F (-0.2°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is computed to be 86°F (30°C).

What is the average humidity in December in May?

In December, the average relative humidity is 59%.

How many days does it rain in December in May?

In May, Oklahoma, in December, it is raining for 3.7 days, with typically 0.75" (19mm) of accumulated precipitation.

How many days does it snow in December in May?

In May, in December, snow falls for 2.5 days, with typically accumulated 0.59" (15mm) of snow.

What is the month with the shortest days in May?

The month with the shortest days in May, Oklahoma, is December, with an average of 9h and 42min of daylight.

What is the average length of the day in December in May?

In December, the average day length in May, Oklahoma, is 9h and 43min.

When are sunrise and sunset in December in May?

In December, on the first day of the month, sunrise is at 7:33 am and sunset at 5:23 pm. On the last day of the month, in May, Oklahoma, sunrise is at 7:51 am and sunset at 5:33 pm CST.

What is the month with the least sunshine in May?

With an average of 6.5h of sunshine, December has the least sunshine of the year in May, Oklahoma.

How many hours of sunshine does May have in December?

The average sunshine duration in December in May, Oklahoma, is 6.5h.

When is the lowest UV index in May?

The month with the lowest UV index in May is December, with an average maximum UV index of 2.

What is the UV index reading in December in May?

In May, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
58.1°F 14.5°C
46.9°F 8.3°C
47.5°F 8.6°C
Average low temperature
40.6°F 4.8°C
31.6°F -0.2°C
30.9°F -0.6°C
Average pressure
30.09" 764mmHg
30.13" 765mmHg
30.15" 766mmHg
Average wind speed
12.2mph 19.6km/h
11.3mph 18.2km/h
11.3mph 18.2km/h
Average max. wind speed
13.4mph 21.6km/h
12.4mph 20km/h
12.3mph 19.8km/h
Average wind speed gusts
19.8mph 31.9km/h
18.3mph 29.5km/h
18.5mph 29.8km/h
Average humidity
56%
59%
57%
Average rainfall
0.59" 15mm
0.75" 19mm
0.59" 15mm
Average rainfall days
4.2
3.7
3.2
Average snowfall
0.79" 20mm
0.59" 15mm
0.94" 24mm
Average snowfall days
1.4
2.5
2.1
Average daylight
10h 1min
9h 4min
10h 0min
Average sunshine
6h 4min
6h 3min
6h 5min
Average sunshine days
23.8
24.5
25.8
Average UV index
3
2
3
Average cloud cover
22%
26%
24%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in December
May, OK

Average temperature in December - May, OK
  • Average high temperature in December: 46.9°F

The warmest month (with the highest average high temperature) is July (94.1°F).
The month with the lowest average high temperature is December (46.9°F).

  • Average low temperature in December: 31.6°F

The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).

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Average pressure in December
May, OK

Average pressure in December - May, OK
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in December
May, OK

Average wind speed in December - May, OK
  • Average wind speed in December: 11.3mph

The windiest month (with the highest average wind speed) is April (13.9mph).
The calmest month (with the lowest average wind speed) is August (10.3mph).

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Average humidity in December
May, OK

Average humidity in December - May, OK
  • Average humidity in December: 59%

The month with the highest relative humidity is May (60%).
The month with the lowest relative humidity is July (52%).

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Average rainfall in December
May, OK

Average rainfall in December - May, OK
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is October (2.2").
The driest month (with the least rainfall) is February (0.55").

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Average rainfall days in December
May, OK

Average rainfall days in December - May, OK
  • Average rainfall days in December: 3.7 days

The month with the highest number of rainy days is August (12.8 days).
The month with the least rainy days is January (3.2 days).

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Average snowfall in December
May, OK

Average snowfall in December - May, OK
  • Average snowfall in December: 0.59"

The month with the highest snowfall is February (1.65").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
May, OK

Average snowfall days in December - May, OK
  • Average snowfall days in December: 2.5 days

The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - May, OK
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 6h and 3min

The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days in December
May, OK

Average sunshine days in December - May, OK
  • Average sunshine days in December: 24.5 days

The month with the most sunshine days is January (25.8 days).
The month with the least sunshine days is August (15.1 days).

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Average UV index in December
May, OK

Average UV index in December - May, OK
  • Average UV index in December: 2

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).

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Average cloud cover in December
May, OK

Average cloud cover in December - May, OK
  • Average cloud cover in December: 26

The month with the most cloud cover is April (Cloud cover 31).
The month with the least cloud cover is June (Cloud cover 17).

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Average visibility in December
May, OK

Average visibility in December - May, OK
  • Average visibility in December: 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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May, Oklahoma, USA

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