July weather forecastVivian, SD
July
Weather in July
July is a tropical summer month in Vivian, South Dakota, with temperature in the range of an average high of 88.7°F (31.5°C) and an average low of 67.5°F (19.7°C).Temperature
July proves to be the warmest month, recording an average peak temperature of 88.7°F (31.5°C) and a minimum temperature of 67.5°F (19.7°C).Heat index
In July, the average heat index is estimated at a tropical 93.2°F (34°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Humidity
The average relative humidity in July is 53%.Rainfall
In July, the rain falls for 12.3 days. Throughout July, 1.93" (49mm) of precipitation is accumulated. In Vivian, South Dakota, during the entire year, the rain falls for 98.5 days and collects up to 13.7" (348mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in July is 15h and 5min.On the first day of July, sunrise is at 6:02 am and sunset at 9:27 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 9:05 pm CDT.
Sunshine
With an average of 11.5h of sunshine, July has the most sunshine of the year.UV index
With an average maximum UV index of 7, July is the month with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 7 during July translates into the following guidance:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Vivian, SD
- Average high temperature in July: 88.7°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in July: 67.5°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in July
Vivian, SD
- Average pressure in July: 29.9"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in July
Vivian, SD
- Average wind speed in July: 10mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest months (with the lowest average wind speed) are February and August (9.9mph).
Average humidity in July
Vivian, SD
- Average humidity in July: 53%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are August and September (52%).
Average rainfall in July
Vivian, SD
- Average rainfall in July: 1.93"
The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in July
Vivian, SD
- Average rainfall days in July: 12.3 days
The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in July
Vivian, SD
- Average snowfall in July: 0"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Vivian, SD
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (10 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Vivian, 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: 11h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in July
Vivian, SD
- Average sunshine days in July: 15.1 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is June (13.7 days).
Average UV index in July
Vivian, SD
- Average UV index in July: 7
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in July
Vivian, SD
- Average cloud cover in July: 19
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 19).
Average visibility in July
Vivian, SD
- Average visibility in July: 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).
