May weather forecast
Lanark, ID

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Weather in May

May, the last month of the spring in Lanark, is a refreshing month, with an average temperature fluctuating between 33.3°F (0.7°C) and 56.3°F (13.5°C).

Temperature

With the onset of May, the average high-temperature slightly shifts from April's frosty 44.2°F (6.8°C) to a mild 56.3°F (13.5°C). Throughout May, Lanark braces for a considerable drop from daytime highs, with an average low-temperature of 33.3°F (0.7°C).

Humidity

In Lanark, the average relative humidity in May is 66%.

Rainfall

The month with the most rainfall in Lanark, Idaho, is May, when the rain falls for 17.3 days and typically aggregates up to 2.6" (66mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall in Lanark. In May, in Lanark, Idaho, it is snowing for 3.4 days. Throughout May, 2.56" (65mm) of snow is accumulated. Throughout the year, in Lanark, Idaho, there are 116.1 snowfall days, and 91.14" (2315mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 37min.
On the first day of May, sunrise is at 6:19 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:55 pm MDT.

Sunshine

In May, the average sunshine is 10.4h.

UV index

The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 4 in May converts into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Lanark in May?

The average high-temperature and low-temperature during May are 56.3°F (13.5°C) and 33.3°F (0.7°C) respectively.

What is the average humidity in May in Lanark?

In Lanark, the average relative humidity in May is 66%.

What is the wettest month in Lanark?

The month with the most rainfall in Lanark, Idaho, is May, when the rain falls for 17.3 days and typically aggregates up to 2.6" (66mm) of precipitation.

How much does it rain in Lanark in May?

In Lanark, Idaho, during May, the rain falls for 17.3 days and regularly aggregates up to 2.6" (66mm) of precipitation.

How much does it snow in Lanark in May?

In Lanark, during May, snow falls for 3.4 days and regularly aggregates up to 2.56" (65mm) of snow.

How many hours of daylight does Lanark have in May?

The average day length in May is 14h and 37min.

When is the sunrise / sunset in May in Lanark?

On the first day of May in Lanark, Idaho, sunrise is at 6:19 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:55 pm MDT.

How many hours of sunshine does Lanark have in May?

The average sunshine duration in May in Lanark, Idaho, is 10.4h.

What is the UV index reading in May in Lanark?

In May, the average daily maximum UV index in Lanark, Idaho, is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
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
Lanark, ID

Average temperature in May - Lanark, ID
  • Average high temperature in May: 56.3°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is December (25.2°F).

  • Average low temperature in May: 33.3°F

The month with the highest average low temperature is July (48.9°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).

Average pressure in May
Lanark, ID

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

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in May
Lanark, ID

Average wind speed in May - Lanark, ID
  • Average wind speed in May: 5.5mph

The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest months (with the lowest average wind speed) are January and December (4.2mph).

Average humidity in May
Lanark, ID

Average humidity in May - Lanark, ID
  • Average humidity in May: 66%

The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is August (42%).

Average rainfall in May
Lanark, ID

Average rainfall in May - Lanark, ID
  • Average rainfall in May: 2.6"

The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is July (0.63").

Average rainfall days in May
Lanark, ID

Average rainfall days in May - Lanark, ID
  • Average rainfall days in May: 17.3 days

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

Average snowfall in May
Lanark, ID

Average snowfall in May - Lanark, ID
  • Average snowfall in May: 2.56"

The month with the highest snowfall is February (18.39").
The months with the least snowfall are July and August (0").

Average snowfall days in May
Lanark, ID

Average snowfall days in May - Lanark, ID
  • Average snowfall days in May: 3.4 days

The month with the highest number of snowfall days is December (21.6 days).
The months with the least snowfall days are July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in May: 10h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in May
Lanark, ID

Average sunshine days in May - Lanark, ID
  • Average sunshine days in May: 8.8 days

The month with the most sunshine days is July (18.8 days).
The month with the least sunshine days is February (6.8 days).

Average UV index in May
Lanark, ID

Average UV index in May - Lanark, 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, November and December (UV index 1).

Average cloud cover in May
Lanark, ID

Average cloud cover in May - Lanark, ID
  • Average cloud cover in May: 30

The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 12).

Average visibility in May
Lanark, ID

Average visibility in May - Lanark, 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 and February (3mi).

Lanark, Idaho, USA

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