Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
Noticing a change, the average high-temperature during April moves from March's cold 33.6°F (0.9°C) to a frosty 43°F (6.1°C). Merna records an average nighttime low of 26.2°F (-3.2°C) in April.Humidity
In April, the average relative humidity is 69%.Rainfall
In April, in Merna, the rain falls for 9.7 days. Throughout April, 1.46" (37mm) of precipitation is accumulated. Throughout the year, there are 109.9 rainfall days, and 10.59" (269mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. The month with the most snowfall is April, when snow falls for 11.3 days and typically aggregates up to 7.36" (187mm) of snow.Daylight
In April, the average length of the day is 13h and 26min.On the first day of the month, sunrise is at 7:01 am and sunset at 7:48 pm. On the last day of April, in Merna, Wyoming, sunrise is at 6:15 am and sunset at 8:21 pm MDT.
Sunshine
In April, the average sunshine is 10.3h.UV index
The months with the lowest UV index in Merna are January through April, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 2 in April leads to these guidelines:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is April cold in Merna?
What is the average humidity in April in Merna?
How many days does it rain in April in Merna?
What is the snowiest month in Merna?
How many days does it snow in April in Merna?
How many hours of daylight does Merna have in April?
When is the sunrise / sunset in April in Merna?
How many hours of sunshine does Merna have in April?
What is the month with the lowest UV index in Merna?
How high is the UV index in April in Merna?
Average temperature in April
Merna, WY
- Average high temperature in April: 43°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is December (23.7°F).
- Average low temperature in April: 26.2°F
The month with the highest average low temperature is July (52°F).
The coldest month (with the lowest average low temperature) is December (5°F).
Average pressure in April
Merna, WY
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
Merna, WY
- Average wind speed in April: 6.9mph
The windiest month (with the highest average wind speed) is June (7mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).
Average humidity in April
Merna, WY
- Average humidity in April: 69%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is August (39%).
Average rainfall in April
Merna, WY
- Average rainfall in April: 1.46"
The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are July and August (0.63").
Average rainfall days in April
Merna, WY
- Average rainfall days in April: 9.7 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is November (6.9 days).
Average snowfall in April
Merna, WY
- Average snowfall in April: 7.36"
The month with the highest snowfall is April (7.36").
The months with the least snowfall are July and August (0").
Average snowfall days in April
Merna, WY
- Average snowfall days in April: 11.3 days
The months with the highest number of snowfall days are February and March (15.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in April /
Average sunshine in April
Merna, WY
- Average daylight in April: 13h and 2min
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 April: 10h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).
Average sunshine days in April
Merna, WY
- Average sunshine days in April: 11.4 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in April
Merna, WY
- Average UV index in April: 2
The months with the highest UV index are June, July and August (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
Merna, WY
- Average cloud cover in April: 32
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in April
Merna, WY
- Average visibility in April: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Merna, Wyoming, USA
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