May weather forecast
Twin Falls, ID

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The high water of the Shoshone Falls in Twin Falls, Idaho, falling over the high rock cliffs and flowing into a river below
The high water of the Shoshone Falls in Twin Falls, Idaho, falling over the high rock cliffs and flowing into a river below

Weather in May

May is a cheerful month in Twin Falls, with temperatures reaching a comfortable 67.1°F (19.5°C) high. Rainfall during this month is relatively low, with an average of 0.75" (19mm) signifying the full arrival of dry and warm weather. Residents take full advantage of the sunny days by engaging in various outdoor activities. Barbecues, gardening and outdoor sports dominate the agenda, marking an exciting turning point in the city's weather cycle. Evenings in May are filled with vibrant sunsets and occasional light breezes, making it a perfect time for alfresco dining and leisurely walks.

Temperature

The start of May in Twin Falls brings a shift in the average high-temperature, increasing from April's refreshing 57.4°F (14.1°C) to an enjoyable 67.1°F (19.5°C). In May, the recorded average low-temperature, of 45.3°F (7.4°C), exhibits a significant fall from the daytime highs.

Humidity

In May, the average relative humidity in Twin Falls is 46%.

Rainfall

In Twin Falls, in May, it is raining for 9.7 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, there are 91.4 rainfall days, and 9.29" (236mm) of precipitation is accumulated.

Snowfall

In Twin Falls, Idaho, snow does not fall in May through September.

Daylight

The average length of the day in May is 14h and 38min.
On the first day of the month, sunrise is at 6:31 am and sunset at 8:38 pm. On the last day of May, in Twin Falls, sunrise is at 6:02 am and sunset at 9:08 pm MDT.

Sunshine

In May, the average sunshine in Twin Falls is 11h.

UV index

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 5 in May translates into this advice:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
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Frequently asked questions

What is the average May temperature in Twin Falls?

An average high-temperature, in May, in Twin Falls, is 67.1°F (19.5°C) and the average low-temperature is 45.3°F (7.4°C).

What is the average humidity in May in Twin Falls?

The average relative humidity in May is 46%.

How much does it rain in Twin Falls in May?

In Twin Falls, Idaho, during May, the rain falls for 9.7 days and regularly aggregates up to 0.75" (19mm) of precipitation.

When it does not snow in Twin Falls?

In Twin Falls, Idaho, snow does not fall in May through September.

Does it snow in Twin Falls in May?

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

What is the average length of the day in May in Twin Falls?

In May, the average day length in Twin Falls is 14h and 38min.

When is the sunrise / sunset in May in Twin Falls?

On the first day of May in Twin Falls, Idaho, sunrise is at 6:31 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 9:08 pm MDT.

How long on average sun shines in May in Twin Falls?

The average sunshine duration in May in Twin Falls, Idaho, is 11h.

What is the UV index intensity in May in Twin Falls?

The average daily maximum UV index in May in Twin Falls, Idaho, is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Twin Falls, ID

Average temperature in May - Twin Falls, ID
  • Average high temperature in May: 67.1°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is December (34°F).

  • Average low temperature in May: 45.3°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is December (23°F).

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Average pressure in May
Twin Falls, ID

Average pressure in May - Twin Falls, ID
  • Average pressure in May: 29.89"Hg

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in May
Twin Falls, ID

Average wind speed in May - Twin Falls, ID
  • Average wind speed in May: 8.7mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).

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Average humidity in May
Twin Falls, ID

Average humidity in May - Twin Falls, ID
  • Average humidity in May: 46%

The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is July (28%).

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Average rainfall in May
Twin Falls, ID

Average rainfall in May - Twin Falls, ID
  • Average rainfall in May: 0.75"

The wettest month (with the highest rainfall) is December (1.3").
The driest months (with the least rainfall) are July and August (0.24").

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Average rainfall days in May
Twin Falls, ID

Average rainfall days in May - Twin Falls, ID
  • Average rainfall days in May: 9.7 days

The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (4.4 days).

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Average snowfall in May
Twin Falls, ID

Average snowfall in May - Twin Falls, ID
  • Average snowfall in May: 0"

The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Twin Falls, ID

Average snowfall days in May - Twin Falls, ID
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is December (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Twin Falls, ID

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

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in May: 11h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in May
Twin Falls, ID

Average sunshine days in May - Twin Falls, ID
  • Average sunshine days in May: 18.6 days

The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is March (14.7 days).

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Average UV index in May
Twin Falls, ID

Average UV index in May - Twin Falls, ID
  • Average UV index in May: 5

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

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Average cloud cover in May
Twin Falls, ID

Average cloud cover in May - Twin Falls, ID
  • Average cloud cover in May: 24

The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 10).

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Average visibility in May
Twin Falls, ID

Average visibility in May - Twin Falls, ID
  • Average visibility in May: 6mi

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

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Twin Falls, Idaho, USA

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