May weather forecast and climate
Jackson, WY

A calm and clear river and vast green fields approaching the iconic white mountains within the Grand Teton National Park in Jackson, Wyoming
A calm and clear river and vast green fields approaching the iconic white mountains within the Grand Teton National Park in Jackson, Wyoming

Temperature

In Jackson, in May, the average high-temperature is 63°F (17.2°C), and the average low-temperature is 30.7°F (-0.7°C).

Rainfall

May is the month with the most rainfall. Rain falls for 10.9 days and accumulates 2.2" (56.1mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall.

Daylight

The average length of the day is 14.7h.

Sunshine

In May, the average sunshine in Jackson is 9h.

UV index

In May, the average UV index in Jackson is 8.

What is the temperature in May in Jackson?

In Jackson, in May, the average high-temperature is 63°F (17.2°C), and the average low-temperature is 30.7°F (-0.7°C).

How many days does it rain in May in Jackson?

In Jackson, Wyoming, during May, the rain falls for 10.9 days and regularly aggregates up to 2.2" (56.1mm) of precipitation.

What is the rainiest month in Jackson?

May is the month with the most rainfall in Jackson, Wyoming. Rain falls for 10.9 days and accumulates 2.2" (56.1mm) of precipitation.

How much does it snow in Jackson in May?

In Jackson, in May, snow falls for 0.3 days, with typically accumulated 0.9" (22.9mm) of snow.

How many hours of daylight does Jackson have in May?

In May, the average length of the day in Jackson, Wyoming, is 14.7h.

How long on average sun shines in May in Jackson?

In Jackson, the average sunshine in May is 9h.

What is the UV index reading in May in Jackson?

The average UV index in May in Jackson, Wyoming, is 8.
Average temperature in May - Jackson, WY
  • Average high temperature in May: 63°F

The warmest month (with the highest average high temperature) is July (81.9°F).
Months with the lowest average high temperature are January and December (28.2°F).

  • Average low temperature in May: 30.8°F

The month with the highest average low temperature is July (40.9°F).
The coldest month (with the lowest average low temperature) is January (5°F).

Average rainfall in May - Jackson, WY
  • Average rainfall in May: 2.2"

The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the lowest rainfall) is February (1.1").

Average rainfall days in May - Jackson, WY
  • Average rainfall days in May: 10.9 days

The month with the highest number of rainy days is January (11.3 days).
The month with the lowest number of rainy days is July (7.5 days).

Average snowfall in May - Jackson, WY
  • Average snowfall in May: 0.9"

The month with the highest snowfall is December (18.6").
Months with the lowest snowfall are July and August (0").

Average snowfall days in May - Jackson, WY
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (9.6 days).
Months with the lowest number of snowfall days are July, August and September (0 days).

Average daylight in May / Average sunshine in May - Jackson, WY
  • Average daylight in May: 14.7h

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

  • Average sunshine in May: 9h

Months with most sunshine are June and July (Average sunshine: 11h).
The month with least sunshine is December (Average sunshine: 4h).

Average UV index in May - Jackson, WY
  • Average UV index in May: 8

The month with the highest UV index is July (UV index 10).
The month with the lowest UV index is December (UV index 1).

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