May weather forecast
Letha, ID

Weather in May

May, the last month of the spring, in Letha, is an agreeable month, with average temperature ranging between min 45°F (7.2°C) and max 69.4°F (20.8°C).

Temperature

In Letha, the average high-temperature increases, from a moderate 58.8°F (14.9°C) in April, to a pleasant 69.4°F (20.8°C). In Letha, the average low-temperature is 45°F (7.2°C).

Humidity

The average relative humidity in May is 52%.

Rainfall

In Letha, Idaho, during May, the rain falls for 8.6 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, there are 91.7 rainfall days, and 10.28" (261mm) of precipitation is accumulated.

Snowfall

In Letha snow does not fall in May through October.

Daylight

In May, the average length of the day in Letha is 14.8h.

Sunshine

In May, the average sunshine in Letha is 11h.

UV index

In Letha, Idaho, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in May in Letha?

In Letha, the average relative humidity in May is 52%.

How much does it rain in Letha in May?

In May, in Letha, the rain falls for 8.6 days. Throughout May, 0.91" (23mm) of precipitation is accumulated.

When it does not snow in Letha?

May through October are months without snowfall.

Does it snow in Letha in May?

In May, it doesn't snow. April is the latest month when it typically snows.

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

In May, the average length of the day is 14.8h.

How many hours of sunshine does Letha have in May?

The average sunshine in May in Letha is 11h.

What is the UV index intensity in May in Letha?

In May, the average daily maximum UV index in Letha, Idaho, is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in May
Letha, ID

Average temperature in May - Letha, ID
  • Average high temperature in May: 69.4°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is December (34.9°F).

  • Average low temperature in May: 45°F

The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (22.8°F).

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Average pressure in May
Letha, ID

Average pressure in May - Letha, ID
  • Average pressure in May: 29.93"

The month with the highest atmospheric pressure is January (30.24").
Months with the lowest atmospheric pressure are June and August (29.91").

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Average wind speed in May
Letha, ID

Average wind speed in May - Letha, ID
  • Average wind speed in May: 5.8mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).

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Average humidity in May
Letha, ID

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

The month with the highest relative humidity is January (82%).
Months with the lowest relative humidity are July and August (31%).

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Average rainfall in May
Letha, ID

Average rainfall in May - Letha, ID
  • Average rainfall in May: 0.91"

The wettest month (with the highest rainfall) is March (1.54").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days in May
Letha, ID

Average rainfall days in May - Letha, ID
  • Average rainfall days in May: 8.6 days

The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is July (3.2 days).

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Average snowfall in May
Letha, ID

Average snowfall in May - Letha, ID
  • Average snowfall in May: 0"

The month with the highest snowfall is December (4.33").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Letha, ID

Average snowfall days in May - Letha, ID
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is December (7.5 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Letha, ID
  • Average daylight in May: 14.8h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in May: 11h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.3h).

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Average sunshine days in May
Letha, ID

Average sunshine days in May - Letha, ID
  • Average sunshine days in May: 21.3 days

The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is March (15.3 days).

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Average UV index in May
Letha, ID

Average UV index in May - Letha, ID
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in May
Letha, ID

Average cloud cover in May - Letha, ID
  • Average cloud cover in May: 23

The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 8).

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Average visibility in May
Letha, ID

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

Months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January and December (5mi).

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