May weather forecast
Silverton, ID

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Weather in May

May, the last month of the spring in Silverton, is a moderate month, with an average temperature varying between 35.8°F (2.1°C) and 60.1°F (15.6°C).

Temperature

With the transition into May, Silverton experiences an increase in average high-temperatures, moving up from a frosty 48°F (8.9°C) in April to a moderate 60.1°F (15.6°C). A noteworthy temperature dip to a cold 35.8°F (2.1°C) is observed during the nights of May in Silverton.

Humidity

The average relative humidity in May in Silverton is 71%.

Rainfall

In May, in Silverton, the rain falls for 15.7 days. Throughout May, 2.4" (61mm) of precipitation is accumulated. Throughout the year, there are 128.7 rainfall days, and 24.65" (626mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. May is the last month it regularly snows in Silverton. During 0.5 snowfall days, in May, Silverton aggregates 0.16" (4mm) of snow. In Silverton, during the entire year, snow falls for 74.7 days and aggregates up to 63.27" (1607mm) of snow.

Daylight

In Silverton, Idaho, the average length of the day in May is 15h and 9min.
On the first day of May in Silverton, sunrise is at 5:25 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 4:50 am and sunset at 8:32 pm PDT.

Sunshine

The average sunshine in May is 9.2h.

UV index

In Silverton, the average daily maximum UV index in May is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 3 in May translates into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the temperature in May in Silverton?

An average high-temperature, in May, in Silverton, is 60.1°F (15.6°C) and the average low-temperature is 35.8°F (2.1°C).

What is the average humidity in May in Silverton?

In Silverton, Idaho, the average relative humidity in May is 71%.

How much does it rain in Silverton in May?

In Silverton, in May, during 15.7 rainfall days, 2.4" (61mm) of precipitation is typically accumulated.

What is the last month it snows in Silverton?

May is the last month it regularly snows in Silverton. During 0.5 snowfall days, in May, Silverton aggregates 0.16" (4mm) of snow.

How many hours of daylight does Silverton have in May?

In May, the average day length in Silverton, Idaho, is 15h and 9min.

When are sunrise and sunset in May in Silverton?

On the first day of May in Silverton, Idaho, sunrise is at 5:25 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 4:50 am and sunset at 8:32 pm PDT.

How many hours of sunshine does Silverton have in May?

In May, the average sunshine duration in Silverton is 9.2h.

How high is the UV index in May in Silverton?

The average daily maximum UV index in May in Silverton, Idaho, is 3. A UV Index estimate of 3 to 5 represents a medium health risk 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
Silverton, ID

Average temperature in May - Silverton, ID
  • Average high temperature in May: 60.1°F

The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (30°F).

  • Average low temperature in May: 35.8°F

The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (19.2°F).

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Average pressure in May
Silverton, ID

Average pressure in May - Silverton, ID
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).

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Average wind speed in May
Silverton, ID

Average wind speed in May - Silverton, ID
  • Average wind speed in May: 4.5mph

The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest months (with the lowest average wind speed) are September and December (4.2mph).

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Average humidity in May
Silverton, ID

Average humidity in May - Silverton, ID
  • Average humidity in May: 71%

The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are July and August (53%).

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Average rainfall in May
Silverton, ID

Average rainfall in May - Silverton, ID
  • Average rainfall in May: 2.4"

The wettest month (with the highest rainfall) is January (3.07").
The driest month (with the least rainfall) is July (0.51").

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Average rainfall days in May
Silverton, ID

Average rainfall days in May - Silverton, ID
  • Average rainfall days in May: 15.7 days

The month with the highest number of rainy days is April (17.3 days).
The month with the least rainy days is July (6 days).

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Average snowfall in May
Silverton, ID

Average snowfall in May - Silverton, ID
  • Average snowfall in May: 0.16"

The month with the highest snowfall is January (16.5").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in May
Silverton, ID

Average snowfall days in May - Silverton, ID
  • Average snowfall days in May: 0.5 days

The month with the highest number of snowfall days is December (15.8 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in May / Average sunshine in May - Silverton, ID
  • Average daylight in May: 15h and 1min

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

  • Average sunshine in May: 9h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).

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Average sunshine days in May
Silverton, ID

Average sunshine days in May - Silverton, ID
  • Average sunshine days in May: 13.4 days

The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is March (9.3 days).

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Average UV index in May
Silverton, ID

Average UV index in May - Silverton, ID
  • Average UV index in May: 3

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

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Average cloud cover in May
Silverton, ID

Average cloud cover in May - Silverton, ID
  • Average cloud cover in May: 40

The months with the most cloud cover are January, February and December (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 16).

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Average visibility in May
Silverton, ID

Average visibility in May - Silverton, ID
  • Average visibility in May: 5mi

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

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Silverton, Idaho, USA

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