July weather forecastLyons, SD
July
Weather in July
July, like June, in Lyons, South Dakota, is another warm summer month, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 82.6°F (28.1°C).Temperature
July, with an average high of 82.6°F (28.1°C) and a low of 63.1°F (17.3°C), signifies the warmest month of the year.Heat index
During July, the heat index is estimated at a tropical 87.8°F (31°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.When assessing, remember that heat index measurements are for light winds and shaded spots. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold great significance to children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
In July, the average relative humidity in Lyons is 74%.Rainfall
In Lyons, during July, the rain falls for 14.4 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, in Lyons, South Dakota, there are 118.3 rainfall days, and 22.76" (578mm) of precipitation is accumulated.Snowfall
In Lyons, snow does not fall in June through September.Daylight
In July, the average length of the day is 15h and 4min.On the first day of July, sunrise is at 5:49 am and sunset at 9:13 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:51 pm CDT.
Sunshine
With an average of 10.7h of sunshine, July has the most sunshine of the year in Lyons.UV index
June and July, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 6 in July translates into this advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Lyons, SD
- Average high temperature in July: 82.6°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in July: 63.1°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure in July
Lyons, SD
- Average pressure in July: 29.93"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in July
Lyons, SD
- Average wind speed in July: 8.1mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in July
Lyons, SD
- Average humidity in July: 74%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (67%).
Average rainfall in July
Lyons, SD
- Average rainfall in July: 2.87"
The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is February (0.63").
Average rainfall days in July
Lyons, SD
- Average rainfall days in July: 14.4 days
The month with the highest number of rainy days is June (18.3 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in July
Lyons, SD
- Average snowfall in July: 0"
The month with the highest snowfall is December (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Lyons, SD
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Lyons, SD
- Average daylight in July: 15h and 6min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in July: 10h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in July
Lyons, SD
- Average sunshine days in July: 13.3 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in July
Lyons, SD
- Average UV index in July: 6
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in July
Lyons, SD
- Average cloud cover in July: 27
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in July
Lyons, SD
- Average visibility in July: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
