May weather forecast
Blackfoot, ID

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Weather in May

As Blackfoot transitions from April to May, the weather undergoes a significant change. The month marks the advent of spring in its full bloom, characterized by mild temperatures and flourishing greenery. The most unique feature about May is almost negligible snowfall, recording just 0.39" (10mm) coupled with increased temperatures. This month is the ideal time for outdoor activities, as the weather remains pleasant and comfortably warm. From flowers blooming everywhere to clear skies, May is an excellent time to visit or live in Blackfoot.

Temperature

Blackfoot's transition into May is marked by a temperature shift, moving from a fresh 53.2°F (11.8°C) in April to a comfortable 63.9°F (17.7°C). Blackfoot's average low-temperature of 41.5°F (5.3°C) in May reflects a significant disparity from the daytime highs.

Humidity

In May, the average relative humidity is 52%.

Rainfall

In Blackfoot, in May, it is raining for 12.7 days, with typically 1.1" (28mm) of accumulated precipitation. In Blackfoot, during the entire year, the rain falls for 120.8 days and collects up to 10.67" (271mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.2 snowfall days, in May, Blackfoot aggregates 0.39" (10mm) of snow. In Blackfoot, during the entire year, snow falls for 69.9 days and aggregates up to 29.37" (746mm) of snow.

Daylight

In Blackfoot, the average length of the day in May is 14h and 42min.
On the first day of May, sunrise is at 6:21 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 9:02 pm MDT.

Sunshine

In May, the average sunshine is 11h.

UV index

In May, the average daily maximum UV index in Blackfoot is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In May, the maximum UV index of 4 suggests this advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Frequently asked questions

What are the temperatures in Blackfoot in May?

The high-temperature, in May, in Blackfoot, is 63.9°F (17.7°C), while the low-temperature averages to 41.5°F (5.3°C).

What is the average humidity in May in Blackfoot?

The average relative humidity in May in Blackfoot, Idaho, is 52%.

How much does it rain in Blackfoot in May?

In May, in Blackfoot, the rain falls for 12.7 days. Throughout May, 1.1" (28mm) of precipitation is accumulated.

What is the last month it snows in Blackfoot?

May is the last month it regularly snows in Blackfoot, Idaho. During 0.2 snowfall days, in May, Blackfoot aggregates 0.39" (10mm) of snow.

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

In May, the average day length is 14h and 42min.

When is the sunrise / sunset in May in Blackfoot?

On the first day of May in Blackfoot, Idaho, sunrise is at 6:21 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 9:02 pm MDT.

How long on average sun shines in May in Blackfoot?

In May, the average sunshine duration in Blackfoot, Idaho, is 11h.

What is the UV index reading in May in Blackfoot?

In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health risk 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
Blackfoot, ID

Average temperature in May - Blackfoot, ID
  • Average high temperature in May: 63.9°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (28.6°F).

  • Average low temperature in May: 41.5°F

The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

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Average pressure in May
Blackfoot, ID

Average pressure in May - Blackfoot, ID
  • Average pressure in May: 29.91"Hg

The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in May
Blackfoot, ID

Average wind speed in May - Blackfoot, ID
  • Average wind speed in May: 8.1mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).

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Average humidity in May
Blackfoot, ID

Average humidity in May - Blackfoot, ID
  • Average humidity in May: 52%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (34%).

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Average rainfall in May
Blackfoot, ID

Average rainfall in May - Blackfoot, ID
  • Average rainfall in May: 1.1"

The wettest month (with the highest rainfall) is March (1.22").
The driest month (with the least rainfall) is July (0.39").

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Average rainfall days in May
Blackfoot, ID

Average rainfall days in May - Blackfoot, ID
  • Average rainfall days in May: 12.7 days

The month with the highest number of rainy days is March (13.8 days).
The month with the least rainy days is July (7.3 days).

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Average snowfall in May
Blackfoot, ID

Average snowfall in May - Blackfoot, ID
  • Average snowfall in May: 0.39"

The month with the highest snowfall is January (7.83").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in May
Blackfoot, ID

Average snowfall days in May - Blackfoot, ID
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is December (16.1 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
Blackfoot, ID

Average daylight in May / Average sunshine in May - Blackfoot, ID
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 11h and 0min

The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

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Average sunshine days in May
Blackfoot, ID

Average sunshine days in May - Blackfoot, ID
  • Average sunshine days in May: 15.3 days

The month with the most sunshine days is October (19.7 days).
The month with the least sunshine days is February (10.5 days).

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Average UV index in May
Blackfoot, ID

Average UV index in May - Blackfoot, ID
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in May
Blackfoot, ID

Average cloud cover in May - Blackfoot, ID
  • Average cloud cover in May: 25

The months with the most cloud cover are January and February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 11).

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Average visibility in May
Blackfoot, ID

Average visibility in May - Blackfoot, ID
  • Average visibility in May: 6mi

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

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Blackfoot, Idaho, USA

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