April weather forecastRiverton, WY
April
Weather in April
From bitterly cold temperatures, the town of Riverton finds itself enjoying slightly more warmth in April. Although it is a wet month, it seems the frequent rains serve to cleanse the residues of winter from the town. Sunshine lingers longer in the sky, due to longer daylight hours, mirroring Riverton’s transition into the comfortably pleasant territory. The sure sign of spring is characterized by a brisk, fresh wind crisply blowing. Drawing this observance to a close, April is where spring’s promise of renewal becomes a reality.Temperature
The commencement of April sees a minor shift in the average high-temperature, moving from a frosty 46°F (7.8°C) in March to a cool 54.1°F (12.3°C). April witnesses an average low-temperature hovering around a cold 35.2°F (1.8°C).Humidity
The average relative humidity in April is 53%.Rainfall
In Riverton, during April, the rain falls for 8.8 days and regularly aggregates up to 1.14" (29mm) of precipitation. In Riverton, during the entire year, the rain falls for 67.3 days and collects up to 6.93" (176mm) of precipitation.Snowfall
Months with snowfall in Riverton are January through May, September through December. April is the month with the most snowfall. Snow falls for 5.7 days and accumulates 5.39" (137mm) of snow.Daylight
In Riverton, the average length of the day in April is 13h and 26min.On the first day of the month, sunrise is at 6:53 am and sunset at 7:40 pm. On the last day of April, sunrise is at 6:07 am and sunset at 8:13 pm MDT.
Sunshine
The average sunshine in April is 10.7h.UV index
The average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 3 in April suggests the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Riverton, WY
- Average high temperature in April: 54.1°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (30.9°F).
- Average low temperature in April: 35.2°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in April
Riverton, WY
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in April
Riverton, WY
- Average wind speed in April: 7.4mph
The windiest month (with the highest average wind speed) is June (7.5mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).
Average humidity in April
Riverton, WY
- Average humidity in April: 53%
The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are July and August (31%).
Average rainfall in April
Riverton, WY
- Average rainfall in April: 1.14"
The wettest month (with the highest rainfall) is May (1.42").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in April
Riverton, WY
- Average rainfall days in April: 8.8 days
The month with the highest number of rainy days is May (9.9 days).
The month with the least rainy days is January (2.5 days).
Average snowfall in April
Riverton, WY
- Average snowfall in April: 5.39"
The month with the highest snowfall is April (5.39").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Riverton, WY
- Average snowfall days in April: 5.7 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in April /
Average sunshine in April
Riverton, WY
- Average daylight in April: 13h and 24min
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 42min
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 36min).
Average sunshine days in April
Riverton, WY
- Average sunshine days in April: 15.5 days
The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is April (15.5 days).
Average UV index in April
Riverton, WY
- Average UV index in April: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Riverton, 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
Riverton, 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).
