April weather forecast
Greybull, WY

Weather in April

April is a cool spring month in Greybull, Wyoming, with temperature in the range of an average high of 54.1°F (12.3°C) and an average low of 36.7°F (2.6°C).

Temperature

In April, the average high-temperature rises from a chilly 44.4°F (6.9°C) in March to a fresh 54.1°F (12.3°C). In April, in Greybull, the average low-temperature is 36.7°F (2.6°C).

Humidity

In Greybull, Wyoming, the average relative humidity in April is 48%.

Rainfall

In Greybull, Wyoming, during 12 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Greybull, during the entire year, the rain falls for 103.2 days and collects up to 5.71" (145mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Greybull. In Greybull, Wyoming, snow falls for 3.1 days, with typically accumulated 1.22" (31mm) of snow. In Greybull, during the entire year, snow falls for 41.4 days and aggregates up to 9.41" (239mm) of snow.

Daylight

In April, the average length of the day is 13h and 31min.
On the first day of April, sunrise is at 6:52 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:15 pm MDT.

Sunshine

In Greybull, Wyoming, the average sunshine in April is 11.1h.

UV index

In April, the average daily maximum UV index in Greybull is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 3 in April interpret into the following advice:
Take precautions - Protection against sun damage is advised. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in April in Greybull?

In Greybull, the average relative humidity in April is 48%.

How many days does it rain in April in Greybull?

In Greybull, Wyoming, in April, it is raining for 12 days, with typically 0.63" (16mm) of accumulated precipitation.

How many days does it snow in April in Greybull?

In Greybull, Wyoming, in April, snow falls for 3.1 days, with typically accumulated 1.22" (31mm) of snow.

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

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

What time are sunrise and sunset in April in Greybull?

On the first day of April in Greybull, sunrise is at 6:52 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:15 pm MDT.

How long on average sun shines in April in Greybull?

In Greybull, Wyoming, the average sunshine duration in April is 11.1h.

What is the UV index intensity in April in Greybull?

In April, the average daily maximum UV index in Greybull is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.

Average temperature in April
Greybull, WY

Average temperature in April - Greybull, WY
  • Average high temperature in April: 54.1°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 (28.8°F).

  • Average low temperature in April: 36.7°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

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Average pressure in April
Greybull, WY

Average pressure in April - Greybull, WY
  • Average pressure in April: 29.93"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.87").

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Average wind speed in April
Greybull, WY

Average wind speed in April - Greybull, WY
  • Average wind speed in April: 8.3mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest months (with the lowest average wind speed) are January and August (6mph).

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Average humidity in April
Greybull, WY

Average humidity in April - Greybull, WY
  • Average humidity in April: 48%

The month with the highest relative humidity is January (78%).
The months with the lowest relative humidity are July and August (33%).

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Average rainfall in April
Greybull, WY

Average rainfall in April - Greybull, WY
  • Average rainfall in April: 0.63"

The wettest month (with the highest rainfall) is May (0.87").
The driest month (with the least rainfall) is December (0.2").

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Average rainfall days in April
Greybull, WY

Average rainfall days in April - Greybull, WY
  • Average rainfall days in April: 12 days

The month with the highest number of rainy days is May (12.6 days).
The month with the least rainy days is December (6.5 days).

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Average snowfall in April
Greybull, WY

Average snowfall in April - Greybull, WY
  • Average snowfall in April: 1.22"

The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Greybull, WY

Average snowfall days in April - Greybull, WY
  • Average snowfall days in April: 3.1 days

The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in April / Average sunshine in April - Greybull, WY
  • Average daylight in April: 13h and 31min

The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in April: 11.1h

The months with the most sunshine are June, July and August (Average sunshine: 11.9h).
The month with the least sunshine is January (Average sunshine: 6.7h).

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Average sunshine days in April
Greybull, WY

Average sunshine days in April - Greybull, WY
  • Average sunshine days in April: 12.5 days

The month with the most sunshine days is December (20.9 days).
The months with the least sunshine days are April and June (12.5 days).

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Average UV index in April
Greybull, WY

Average UV index in April - Greybull, WY
  • Average UV index in April: 3

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in April
Greybull, WY

Average cloud cover in April - Greybull, WY
  • Average cloud cover in April: 26

The month with the most cloud cover is February (Cloud cover 28).
The months with the least cloud cover are July and August (Cloud cover 12).

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Average visibility in April
Greybull, WY

Average visibility in April - Greybull, WY
  • Average visibility in April: 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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