May weather forecast
Spencer, ID

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Weather in May

May, the last month of the spring in Spencer, is a mild month, with temperature in the range of an average low of 33.3°F (0.7°C) and an average high of 55.9°F (13.3°C).

Temperature

Spencer's transition into May brings a rise in the average high-temperature, moving from a cold 42.4°F (5.8°C) in April to a refreshing 55.9°F (13.3°C). Despite the drastic temperature difference, Spencer records an average nighttime low of 33.3°F (0.7°C) throughout May.

Humidity

The average relative humidity in May is 67%.

Rainfall

In Spencer, in May, it is raining for 17 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, there are 106.1 rainfall days, and 20.83" (529mm) of precipitation is accumulated.

Snowfall

January through July, September through December are months with snowfall. In Spencer, in May, during 5.7 snowfall days, 4.8" (122mm) of snow is typically accumulated. Throughout the year, in Spencer, there are 138.1 snowfall days, and 107.64" (2734mm) of snow is accumulated.

Daylight

In Spencer, the average length of the day in May is 14h and 49min.
On the first day of the month, sunrise is at 6:18 am and sunset at 8:33 pm. On the last day of May, sunrise is at 5:47 am and sunset at 9:05 pm MDT.

Sunshine

In May, the average sunshine is 10.3h.

UV index

In Spencer, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, a daily maximum UV index of 4 leads to the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Boost your sun resistance with garments that are densely woven yet spacious. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

In Spencer, 55.9°F (13.3°C) is the average high-temperature and 33.3°F (0.7°C) is the average low-temperature during May.

What is the average humidity in May?

In Spencer, Idaho, the average relative humidity in May is 67%.

How much does it rain in May?

In Spencer, during May, the rain falls for 17 days and regularly aggregates up to 2.2" (56mm) of precipitation.

How many days does it snow in May?

In Spencer, in May, snow falls for 5.7 days, with typically accumulated 4.8" (122mm) of snow.

How many hours of daylight does Spencer have in May?

The average day length in May is 14h and 49min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 6:18 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 9:05 pm MDT.

How many hours of sunshine does Spencer have in May?

In May, the average sunshine duration is 10.3h.

What is the UV index reading in May?

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

Average temperature in May - Spencer, ID
  • Average high temperature in May: 55.9°F

The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is December (22.3°F).

  • Average low temperature in May: 33.3°F

The month with the highest average low temperature is August (46.6°F).
The coldest months (with the lowest average low temperature) are January and December (6.8°F).

Average pressure in May
Spencer, ID

Average pressure in May - Spencer, ID
  • Average pressure in May: 29.93"Hg

The month with the highest atmospheric pressure is January (30.26"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
Spencer, ID

Average wind speed in May - Spencer, ID
  • Average wind speed in May: 6mph

The windiest month (with the highest average wind speed) is June (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.4mph).

Average humidity in May
Spencer, ID

Average humidity in May - Spencer, ID
  • Average humidity in May: 67%

The months with the highest relative humidity are January and February (94%).
The month with the lowest relative humidity is August (47%).

Average rainfall in May
Spencer, ID

Average rainfall in May - Spencer, ID
  • Average rainfall in May: 2.2"

The wettest month (with the highest rainfall) is February (2.64").
The driest month (with the least rainfall) is July (0.47").

Average rainfall days in May
Spencer, ID

Average rainfall days in May - Spencer, ID
  • Average rainfall days in May: 17 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (3.8 days).

Average snowfall in May
Spencer, ID

Average snowfall in May - Spencer, ID
  • Average snowfall in May: 4.8"

The month with the highest snowfall is January (19.84").
The month with the least snowfall is August (0").

Average snowfall days in May
Spencer, ID

Average snowfall days in May - Spencer, ID
  • Average snowfall days in May: 5.7 days

The month with the highest number of snowfall days is December (23 days).
The month with the least snowfall days is August (0 days).

Average daylight in May /
Average sunshine in May
Spencer, ID

Average daylight in May / Average sunshine in May - Spencer, ID
  • 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 2min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in May
Spencer, ID

Average sunshine days in May - Spencer, ID
  • Average sunshine days in May: 9.3 days

The month with the most sunshine days is July (21.2 days).
The month with the least sunshine days is February (5.9 days).

Average UV index in May
Spencer, ID

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

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in May
Spencer, ID

Average cloud cover in May - Spencer, ID
  • Average cloud cover in May: 32

The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 13).

Average visibility in May
Spencer, ID

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

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (3mi).

Spencer, Idaho, USA

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