May weather forecast
Saint Thomas, ND

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Weather in May

May, the last month of the spring in Saint Thomas, is an enjoyable month, with an average temperature varying between 64.6°F (18.1°C) and 47.8°F (8.8°C).

Temperature

Saint Thomas in May sees a clear temperature escalation, with average high-temperatures increasing from a frosty 48.9°F (9.4°C) in April to an enjoyable 64.6°F (18.1°C). An average nighttime temperature of 47.8°F (8.8°C) is witnessed in Saint Thomas, North Dakota throughout May.

Humidity

In Saint Thomas, the average relative humidity in May is 62%.

Rainfall

In May, in Saint Thomas, the rain falls for 13 days. Throughout May, 2.01" (51mm) of precipitation is accumulated. Throughout the year, there are 97.8 rainfall days, and 15.83" (402mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.4 snowfall days, in May, Saint Thomas aggregates 0.2" (5mm) of snow. Throughout the year, in Saint Thomas, there are 70.4 snowfall days, and 18.46" (469mm) of snow is accumulated.

Daylight

In May, the average length of the day in Saint Thomas is 15h and 17min.
On the first day of May, sunrise is at 6:08 am and sunset at 8:45 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 9:23 pm CDT.

Sunshine

In May, the average sunshine is 8.9h.

UV index

In Saint Thomas, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A typical high UV index of 5 in May suggests the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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Frequently asked questions

What is the usual temperature for Saint Thomas in May?

The average high-temperature and low-temperature in Saint Thomas during May are 64.6°F (18.1°C) and 47.8°F (8.8°C) respectively.

What is the average humidity in May in Saint Thomas?

The average relative humidity in May in Saint Thomas, North Dakota, is 62%.

How many days does it rain in May in Saint Thomas?

In May, in Saint Thomas, North Dakota, the rain falls for 13 days. Throughout May, 2.01" (51mm) of precipitation is accumulated.

What is the last month it snows in Saint Thomas?

May is the last month it regularly snows. During 0.4 snowfall days, in May, Saint Thomas aggregates 0.2" (5mm) of snow.

How many hours of daylight does Saint Thomas have in May?

In Saint Thomas, North Dakota, the average day length in May is 15h and 17min.

When are sunrise and sunset in May in Saint Thomas?

In May, on the first day of the month, sunrise is at 6:08 am and sunset at 8:45 pm. On the last day of the month, in Saint Thomas, North Dakota, sunrise is at 5:31 am and sunset at 9:23 pm CDT.

How long on average sun shines in May in Saint Thomas?

The average sunshine duration in May is 8.9h.

How high is the UV index in May in Saint Thomas?

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium 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
Saint Thomas, ND

Average temperature in May - Saint Thomas, ND
  • Average high temperature in May: 64.6°F

The warmest month (with the highest average high temperature) is August (80.4°F).
The month with the lowest average high temperature is January (14.7°F).

  • Average low temperature in May: 47.8°F

The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (0.9°F).

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Average pressure in May
Saint Thomas, ND

Average pressure in May - Saint Thomas, ND
  • Average pressure in May: 29.94"Hg

The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in May
Saint Thomas, ND

Average wind speed in May - Saint Thomas, ND
  • Average wind speed in May: 9.8mph

The windiest month (with the highest average wind speed) is October (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).

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Average humidity in May
Saint Thomas, ND

Average humidity in May - Saint Thomas, ND
  • Average humidity in May: 62%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (59%).

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Average rainfall in May
Saint Thomas, ND

Average rainfall in May - Saint Thomas, ND
  • Average rainfall in May: 2.01"

The wettest month (with the highest rainfall) is June (2.8").
The driest months (with the least rainfall) are January and February (0.55").

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Average rainfall days in May
Saint Thomas, ND

Average rainfall days in May - Saint Thomas, ND
  • Average rainfall days in May: 13 days

The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (1.6 days).

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Average snowfall in May
Saint Thomas, ND

Average snowfall in May - Saint Thomas, ND
  • Average snowfall in May: 0.2"

The month with the highest snowfall is December (3.94").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Saint Thomas, ND

Average snowfall days in May - Saint Thomas, ND
  • Average snowfall days in May: 0.4 days

The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Saint Thomas, ND

Average daylight in May / Average sunshine in May - Saint Thomas, ND
  • Average daylight in May: 15h and 2min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in May: 8h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

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Average sunshine days in May
Saint Thomas, ND

Average sunshine days in May - Saint Thomas, ND
  • Average sunshine days in May: 15.3 days

The month with the most sunshine days is August (19.8 days).
The month with the least sunshine days is June (11.5 days).

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Average UV index in May
Saint Thomas, ND

Average UV index in May - Saint Thomas, ND
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).

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Average cloud cover in May
Saint Thomas, ND

Average cloud cover in May - Saint Thomas, ND
  • Average cloud cover in May: 40

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 24).

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Average visibility in May
Saint Thomas, ND

Average visibility in May - Saint Thomas, ND
  • Average visibility in May: 6mi

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

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Saint Thomas, North Dakota, USA

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