April weather forecast
Shell, WY

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Weather in April

April in Shell, Wyoming, is a wintry spring month, with an average temperature varying between 20.3°F (-6.5°C) and 36.9°F (2.7°C).

Temperature

April's onset brings a minor rise in the average high-temperature, moving from a subzero cold 30.6°F (-0.8°C) in March to an icy 36.9°F (2.7°C). During the month of April, an average temperature of 20.3°F (-6.5°C) is noted during the nights.

Humidity

The average relative humidity in April is 78%.

Rainfall

In Shell, in April, during 5.2 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. In Shell, during the entire year, the rain falls for 94.3 days and collects up to 19.13" (486mm) of precipitation.

Snowfall

Months with snowfall are January through June, August through December. In April, it is snowing for 15.5 days. Throughout April, 12.13" (308mm) of snow is accumulated. In Shell, during the entire year, snow falls for 113.3 days and aggregates up to 89.02" (2261mm) of snow.

Daylight

The average length of the day in April is 13h and 31min.
On the first day of April, sunrise is at 6:50 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:14 pm MDT.

Sunshine

The average sunshine in April is 8.7h.

UV index

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 2 in April translates into this advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. To guard against the harmful effects of the Sun, minimize exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is April?

The high-temperature, in April, in Shell, records 36.9°F (2.7°C), while the low-temperature is 20.3°F (-6.5°C).

What is the average humidity in April?

In Shell, Wyoming, the average relative humidity in April is 78%.

How much does it rain in April?

In Shell, in April, during 5.2 rainfall days, 1.65" (42mm) of precipitation is typically accumulated.

How many days does it snow in April?

In Shell, in April, snow falls for 15.5 days, with typically accumulated 12.13" (308mm) of snow.

What is the average length of the day in April?

In Shell, the average day length in April is 13h and 31min.

What time are sunrise and sunset in April?

On the first day of April in Shell, sunrise is at 6:50 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:14 pm MDT.

How long on average sun shines in April?

In Shell, the average sunshine duration in April is 8.7h.

What is the month with the lowest UV index?

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in April in Shell?

The average daily maximum UV index in April is 2. A UV Index reading of 2, and below, represents a minimal hazard to health 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 April
Shell, WY

Average temperature in April - Shell, WY
  • Average high temperature in April: 36.9°F

The warmest month (with the highest average high temperature) is July (69.4°F).
The month with the lowest average high temperature is December (20.8°F).

  • Average low temperature in April: 20.3°F

The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is December (2.3°F).

Average pressure in April
Shell, WY

Average pressure in April - Shell, WY
  • Average pressure in April: 29.92"Hg

The months with the highest atmospheric pressure are January and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in April
Shell, WY

Average wind speed in April - Shell, WY
  • Average wind speed in April: 6.2mph

The windiest month (with the highest average wind speed) is June (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in April
Shell, WY

Average humidity in April - Shell, WY
  • Average humidity in April: 78%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (51%).

Average rainfall in April
Shell, WY

Average rainfall in April - Shell, WY
  • Average rainfall in April: 1.65"

The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is December (0.75").

Average rainfall days in April
Shell, WY

Average rainfall days in April - Shell, WY
  • Average rainfall days in April: 5.2 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is November (2.3 days).

Average snowfall in April
Shell, WY

Average snowfall in April - Shell, WY
  • Average snowfall in April: 12.13"

The month with the highest snowfall is May (19.33").
The month with the least snowfall is July (0").

Average snowfall days in April
Shell, WY

Average snowfall days in April - Shell, WY
  • Average snowfall days in April: 15.5 days

The month with the highest number of snowfall days is January (15.8 days).
The month with the least snowfall days is July (0 days).

Average daylight in April /
Average sunshine in April
Shell, WY

Average daylight in April / Average sunshine in April - Shell, WY
  • Average daylight in April: 13h and 3min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in April: 8h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in April
Shell, WY

Average sunshine days in April - Shell, WY
  • Average sunshine days in April: 11.8 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (8.6 days).

Average UV index in April
Shell, WY

Average UV index in April - Shell, WY
  • Average UV index in April: 2

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

Average cloud cover in April
Shell, WY

Average cloud cover in April - Shell, WY
  • Average cloud cover in April: 44

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 16).

Average visibility in April
Shell, WY

Average visibility in April - Shell, WY
  • Average visibility in April: 5mi

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

Shell, Wyoming, USA

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