Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
In Keystone, July is the month with the highest recorded average temperatures, measuring a high of 81.7°F (27.6°C) and a low of 60.4°F (15.8°C).Heat index
In July, the heat index is evaluated at 82.4°F (28°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.Understanding the heat index involves considering values for shaded locales with light wind. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
The average relative humidity in July is 54%.Rainfall
In July, in Keystone, the rain falls for 17.3 days. Throughout July, 2.91" (74mm) of precipitation is accumulated. In Keystone, during the entire year, the rain falls for 135.4 days and collects up to 20.39" (518mm) of precipitation.Snowfall
June through August are months without snowfall in Keystone.Daylight
The average length of the day in July in Keystone is 15h and 5min.On the first day of July, sunrise is at 5:15 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:18 pm MDT.
Sunshine
In July, the average sunshine in Keystone is 11.6h.UV index
With an average maximum UV index of 6, July is the month with the highest UV index in Keystone. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A daily high UV index of 6 in July leads to these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Frequently asked questions
What is the hottest time of year in Keystone?
What is the temperature in July in Keystone?
What is the average humidity in July in Keystone?
How much does it rain in Keystone in July?
When it does not snow in Keystone?
What is the average length of the day in July in Keystone?
When are sunrise and sunset in July in Keystone?
How many hours of sunshine does Keystone have in July?
What is the month with the highest UV index in Keystone?
What is the UV index intensity in July in Keystone?
Average temperature in July
Keystone, SD
- Average high temperature in July: 81.7°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 (29.8°F).
- Average low temperature in July: 60.4°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is February (16.2°F).
Average pressure in July
Keystone, SD
- Average pressure in July: 29.9"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in July
Keystone, SD
- Average wind speed in July: 7.5mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in July
Keystone, SD
- Average humidity in July: 54%
The months with the highest relative humidity are January and February (77%).
The months with the lowest relative humidity are August and September (52%).
Average rainfall in July
Keystone, SD
- Average rainfall in July: 2.91"
The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in July
Keystone, SD
- Average rainfall days in July: 17.3 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is November (4.5 days).
Average snowfall in July
Keystone, SD
- Average snowfall in July: 0"
The month with the highest snowfall is April (7.24").
The months with the least snowfall are June, July and August (0").
Average snowfall days in July
Keystone, SD
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in July /
Average sunshine in July
Keystone, SD
- Average daylight in July: 15h and 1min
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 4min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 0min).
Average sunshine days in July
Keystone, SD
- Average sunshine days in July: 8.6 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (7.8 days).
Average UV index in July
Keystone, SD
- Average UV index in July: 6
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in July
Keystone, SD
- Average cloud cover in July: 19
The month with the most cloud cover is April (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in July
Keystone, 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).
Keystone, South Dakota, USA
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