April weather forecastSouth Pass City, WY
April
Weather in April
April is a chilly spring month in South Pass City, Wyoming, with an average temperature ranging between max 47.8°F (8.8°C) and min 30°F (-1.1°C).Temperature
South Pass City in April experiences a slight uptick in the average high-temperature, adjusting from March's cold 39.7°F (4.3°C) to a frosty 47.8°F (8.8°C). The average low-temperature of 30°F (-1.1°C) is witnessed during April.Humidity
The average relative humidity in April is 62%.Rainfall
The month with the most rainfall is April, when the rain falls for 11.5 days and typically aggregates up to 1.81" (46mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. April is the month with the most snowfall. Snow falls for 7.3 days and accumulates 8.15" (207mm) of snow.Daylight
The average length of the day in April is 13h and 25min.On the first day of April, sunrise is at 6:55 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 8:14 pm MDT.
Sunshine
In April, the average sunshine is 10.5h.UV index
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 in April converts into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
South Pass City, WY
- Average high temperature in April: 47.8°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (28.4°F).
- Average low temperature in April: 30°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is December (13.1°F).
Average pressure in April
South Pass City, WY
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in April
South Pass City, WY
- Average wind speed in April: 7.6mph
The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in April
South Pass City, WY
- Average humidity in April: 62%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is August (34%).
Average rainfall in April
South Pass City, WY
- Average rainfall in April: 1.81"
The wettest month (with the highest rainfall) is April (1.81").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in April
South Pass City, WY
- Average rainfall days in April: 11.5 days
The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is November (4.8 days).
Average snowfall in April
South Pass City, WY
- Average snowfall in April: 8.15"
The month with the highest snowfall is April (8.15").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
South Pass City, WY
- Average snowfall days in April: 7.3 days
The month with the highest number of snowfall days is February (10.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
South Pass City, WY
- Average daylight in April: 13h and 24min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in April: 10h and 30min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in April
South Pass City, WY
- Average sunshine days in April: 12.3 days
The month with the most sunshine days is September (22 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in April
South Pass City, WY
- Average UV index in April: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in April
South Pass City, WY
- Average cloud cover in April: 28
The months with the most cloud cover are February and April (Cloud cover 28).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in April
South Pass City, 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).





