Jackson
Wyoming, USA
Long-term weather forecast
Long-term weather forecast

April 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
April in Jackson, Wyoming, is a cold spring month, with temperature in the range of an average low of 32°F (0°C) and an average high of 37.8°F (3.2°C).

Temperature

In April, the average high-temperature marginally rises, from a freezing cold 30.6°F (-0.8°C) in March, to a wintry 37.8°F (3.2°C). In April, the average low-temperature is 32°F (0°C).

Humidity

In April, the average relative humidity in Jackson is 87%.

Rainfall

In Jackson, it is raining for 9.1 days, with typically 2.95" (75mm) of accumulated precipitation. In Jackson, Wyoming, during the entire year, the rain falls for 103 days and collects up to 29.84" (758mm) of precipitation.

Snowfall

January through December are months with snowfall. In Jackson, during April, snow falls for 23.5 days and regularly aggregates up to 21.22" (539mm) of snow. In Jackson, during the entire year, snow falls for 173.6 days, and aggregates up to 181.26" (4604mm) of snow.

Daylight

In April, the average length of the day is 13.5h.

Sunshine

In Jackson, the average sunshine is 7.1h.

UV index

January through April, October through December, with an average maximum UV index of 1, are months with the lowest UV index in Jackson. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 1 in April transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in April in Jackson?

In April, the average high-temperature is 37.8°F (3.2°C), and the average low-temperature is 32°F (0°C).

What is the average humidity in April in Jackson?

In Jackson, the average relative humidity in April is 87%.

How many days does it rain in April in Jackson?

In Jackson, in April, it is raining for 9.1 days, with typically 2.95" (75mm) of accumulated precipitation.

How many days does it snow in April in Jackson?

In Jackson, during April, snow falls for 23.5 days and regularly aggregates up to 21.22" (539mm) of snow.

What is the average length of the day in April in Jackson?

In Jackson, the average length of the day in April is 13.5h.

How many hours of sunshine does Jackson have in April?

In April, the average sunshine in Jackson, Wyoming, is 7.1h.

What is the month with the lowest UV index in Jackson?

Months with the lowest UV index in Jackson, Wyoming, are January through April, October through December, with an average maximum UV index of 1.

What is the UV index reading in April in Jackson?

In Jackson, Wyoming, the average daily maximum UV index in April is 1. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to the Sun's UV rays.
Average temperature in April - Jackson, WY
  • Average high temperature in April: 37.8°F

The warmest month (with the highest average high temperature) is July (73.4°F).
The month with the lowest average high temperature is December (21.9°F).

  • Average low temperature in April: 0°F

Months with the highest average low temperature are January, February, March, April, May, June, July, August, September, October, November and December (0°F).
Coldest months (with the lowest average low temperature) are January, February, March, April, May, June, July, August, September, October, November and December (0°F).

Average humidity in April - Jackson, WY
  • Average humidity in April: 87%

The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (50%).

Average rainfall in April - Jackson, WY
  • Average rainfall in April: 2.95"

The wettest month (with the highest rainfall) is February (3.54").
The driest month (with the lowest rainfall) is August (1.34").

Average rainfall days in April - Jackson, WY
  • Average rainfall days in April: 9.1 days

The month with the highest number of rainy days is May (15.4 days).
The month with the lowest number of rainy days is January (2.9 days).

Average snowfall in April - Jackson, WY
  • Average snowfall in April: 21.22"

The month with the highest snowfall is February (29.33").
The month with the lowest snowfall is August (0.12").

Average snowfall days in April - Jackson, WY
  • Average snowfall days in April: 23.5 days

The month with the highest number of snowfall days is March (24.8 days).
The month with the lowest number of snowfall days is July (0.4 days).

Average daylight in April / Average sunshine in April - Jackson, WY
  • Average daylight in April: 13.5h

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 April: 7.1h

The month with most sunshine is July (Average sunshine: 11.6h).
The month with least sunshine is February (Average sunshine: 3.4h).

Average UV index in April - Jackson, WY
  • Average UV index in April: 1

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).