May weather forecast
Dell, MT

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Weather in May

The last month of the spring, May, is a refreshing month in Dell, Montana, with temperature in the range of an average high of 55.6°F (13.1°C) and an average low of 34.7°F (1.5°C).

Temperature

As April transitions into May, Dell sees a rise in the average high-temperature, moving from a frosty 44.1°F (6.7°C) to a mild 55.6°F (13.1°C). Dell reports an average nighttime low-temperature of 34.7°F (1.5°C) in May.

Humidity

The average relative humidity in May is 61%.

Rainfall

In May, the rain falls for 13.7 days. Throughout May, 1.38" (35mm) of precipitation is accumulated. In Dell, during the entire year, the rain falls for 103.2 days and collects up to 9.84" (250mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. In Dell, in May, during 3.9 snowfall days, 2.4" (61mm) of snow is typically accumulated. Throughout the year, in Dell, there are 81.9 snowfall days, and 31.65" (804mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 51min.
On the first day of the month, sunrise is at 6:19 am and sunset at 8:36 pm. On the last day of May, sunrise is at 5:48 am and sunset at 9:08 pm MDT.

Sunshine

The average sunshine in May is 10.6h.

UV index

In Dell, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: During May, 4 as the daily maximum UV index converts into the following advice:
Take necessary precautions - Suggestions to elude sunburn are provided. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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Frequently asked questions

What is the usual temperature for Dell in May?

In Dell, in May, the average high-temperature is 55.6°F (13.1°C), and the average low-temperature is 34.7°F (1.5°C).

What is the average humidity in May in Dell?

The average relative humidity in May in Dell is 61%.

How much does it rain in Dell in May?

In May, the rain falls for 13.7 days. Throughout May, 1.38" (35mm) of precipitation is accumulated.

How much does it snow in Dell in May?

In Dell, in May, during 3.9 snowfall days, 2.4" (61mm) of snow is typically accumulated.

How many hours of daylight does Dell have in May?

In May, the average day length in Dell, Montana, is 14h and 51min.

What time are sunrise and sunset in May in Dell?

On the first day of May in Dell, sunrise is at 6:19 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 9:08 pm MDT.

How long on average sun shines in May in Dell?

The average sunshine duration in May in Dell is 10.6h.

What is the UV index intensity in May in Dell?

In May, the average daily maximum UV index in Dell is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Dell, MT

Average temperature in May - Dell, MT
  • Average high temperature in May: 55.6°F

The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is December (24.3°F).

  • Average low temperature in May: 34.7°F

The month with the highest average low temperature is July (47.1°F).
The coldest month (with the lowest average low temperature) is December (9.9°F).

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Average pressure in May
Dell, MT

Average pressure in May - Dell, MT
  • Average pressure in May: 29.94"Hg

The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in May
Dell, MT

Average wind speed in May - Dell, MT
  • Average wind speed in May: 6.2mph

The windiest months (with the highest average wind speed) are November and December (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in May
Dell, MT

Average humidity in May - Dell, MT
  • Average humidity in May: 61%

The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are July and August (43%).

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Average rainfall in May
Dell, MT

Average rainfall in May - Dell, MT
  • Average rainfall in May: 1.38"

The wettest month (with the highest rainfall) is June (1.73").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in May
Dell, MT

Average rainfall days in May - Dell, MT
  • Average rainfall days in May: 13.7 days

The month with the highest number of rainy days is May (13.7 days).
The month with the least rainy days is January (4.6 days).

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Average snowfall in May
Dell, MT

Average snowfall in May - Dell, MT
  • Average snowfall in May: 2.4"

The month with the highest snowfall is April (4.96").
The months with the least snowfall are July and August (0").

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Average snowfall days in May
Dell, MT

Average snowfall days in May - Dell, MT
  • Average snowfall days in May: 3.9 days

The month with the highest number of snowfall days is February (13.3 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in May /
Average sunshine in May
Dell, MT

Average daylight in May / Average sunshine in May - Dell, MT
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in May: 10h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).

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Average sunshine days in May
Dell, MT

Average sunshine days in May - Dell, MT
  • Average sunshine days in May: 12.2 days

The month with the most sunshine days is July (20.7 days).
The month with the least sunshine days is April (10.7 days).

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Average UV index in May
Dell, MT

Average UV index in May - Dell, MT
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is February (UV index 1).

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Average cloud cover in May
Dell, MT

Average cloud cover in May - Dell, MT
  • Average cloud cover in May: 30

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 13).

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Average visibility in May
Dell, MT

Average visibility in May - Dell, MT
  • Average visibility in May: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is February (4mi).

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Dell, Montana, USA

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