May weather forecast
Lewisville, ID

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Weather in May

The last month of the spring, May, is a comfortable month in Lewisville, Idaho, with an average temperature fluctuating between 40.1°F (4.5°C) and 63.5°F (17.5°C).

Temperature

With the beginning of May, Lewisville's average high-temperature sees an increase, transitioning from a fresh 52.3°F (11.3°C) in April to a refreshing 63.5°F (17.5°C). Lewisville reports a marked divergence from daytime peaks throughout May, with lows averaging at a wintry 40.1°F (4.5°C).

Humidity

In May, the average relative humidity in Lewisville is 54%.

Rainfall

May is the month with the most rainfall. Rain falls for 12.8 days and accumulates 1.26" (32mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.6 snowfall days, in May, Lewisville aggregates 0.67" (17mm) of snow. In Lewisville, during the entire year, snow falls for 79 days and aggregates up to 31.54" (801mm) of snow.

Daylight

The average length of the day in May is 14h and 45min.
On the first day of May, sunrise is at 6:18 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 9:02 pm MDT.

Sunshine

In Lewisville, the average sunshine in May is 10.9h.

UV index

In Lewisville, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 4 in May translates into this advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What are May temperatures in Lewisville?

The average high-temperature, in May, in Lewisville, is 63.5°F (17.5°C), while the average low-temperature is 40.1°F (4.5°C).

What is the average humidity in May in Lewisville?

In May, the average relative humidity is 54%.

What is the wettest month in Lewisville?

The month with the most rainfall in Lewisville, Idaho, is May, when the rain falls for 12.8 days and typically aggregates up to 1.26" (32mm) of precipitation.

How many days does it rain in May in Lewisville?

In Lewisville, Idaho, in May, it is raining for 12.8 days, with typically 1.26" (32mm) of accumulated precipitation.

What is the last month it snows in Lewisville?

May is the last month it regularly snows in Lewisville. During 0.6 snowfall days, in May, Lewisville aggregates 0.67" (17mm) of snow.

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

In Lewisville, the average day length in May is 14h and 45min.

What time are sunrise and sunset in May in Lewisville?

On the first day of May in Lewisville, sunrise is at 6:18 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 9:02 pm MDT.

How long on average sun shines in May in Lewisville?

The average sunshine duration in May is 10.9h.

How high is the UV index in May in Lewisville?

In May, the average daily maximum UV index in Lewisville, Idaho, 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
Lewisville, ID

Average temperature in May - Lewisville, ID
  • Average high temperature in May: 63.5°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (27.1°F).

  • Average low temperature in May: 40.1°F

The month with the highest average low temperature is August (53.8°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

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Average pressure in May
Lewisville, ID

Average pressure in May - Lewisville, ID
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Lewisville, ID

Average wind speed in May - Lewisville, ID
  • Average wind speed in May: 7.4mph

The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).

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Average humidity in May
Lewisville, ID

Average humidity in May - Lewisville, ID
  • Average humidity in May: 54%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (37%).

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Average rainfall in May
Lewisville, ID

Average rainfall in May - Lewisville, ID
  • Average rainfall in May: 1.26"

The wettest month (with the highest rainfall) is May (1.26").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in May
Lewisville, ID

Average rainfall days in May - Lewisville, ID
  • Average rainfall days in May: 12.8 days

The month with the highest number of rainy days is April (14.2 days).
The month with the least rainy days is July (5.8 days).

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Average snowfall in May
Lewisville, ID

Average snowfall in May - Lewisville, ID
  • Average snowfall in May: 0.67"

The month with the highest snowfall is January (8.31").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in May
Lewisville, ID

Average snowfall days in May - Lewisville, ID
  • Average snowfall days in May: 0.6 days

The month with the highest number of snowfall days is January (17.3 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
Lewisville, ID

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

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 10h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

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Average sunshine days in May
Lewisville, ID

Average sunshine days in May - Lewisville, ID
  • Average sunshine days in May: 14.8 days

The month with the most sunshine days is July (22.3 days).
The month with the least sunshine days is February (9.9 days).

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Average UV index in May
Lewisville, ID

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

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

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Average cloud cover in May
Lewisville, ID

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

The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 11).

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Average visibility in May
Lewisville, ID

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

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

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Lewisville, Idaho, USA

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