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 Derby, the highest average temperatures are observed in July, with a high of 88.3°F (31.3°C) and a low of 61.7°F (16.5°C).Heat index
The heat index value for July is calculated to be a tropical 89.6°F (32°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.Note that heat index values are valued for light wind and location in the shade. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
In Derby, the average relative humidity in July is 42%.Rainfall
The month with the most rainfall in Derby, Colorado, is July, when the rain falls for 8.2 days and typically aggregates up to 0.59" (15mm) of precipitation.Snowfall
In Derby, snow does not fall in June through September.Daylight
In Derby, the average length of the day in July is 14h and 40min.On the first day of July in Derby, Colorado, sunrise is at 5:35 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 8:13 pm MDT.
Sunshine
June and July, with an average of 11.9h of sunshine, are months with the most sunshine.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Derby, Colorado. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 6 during July translates into the following directions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What month is the hottest in Derby?
How hot does it get in Derby in July?
What is the average humidity in July in Derby?
What is the rainiest month in Derby?
How many days does it rain in July in Derby?
When it does not snow in Derby?
What is the average length of the day in July in Derby?
When are sunrise and sunset in July in Derby?
What are the months with the most sunshine in Derby?
How many hours of sunshine does Derby have in July?
What are the months with the highest UV index in Derby?
What is the UV index intensity in July in Derby?
Average temperature in July
Derby, CO
- Average high temperature in July: 88.3°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (41.2°F).
- Average low temperature in July: 61.7°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure in July
Derby, CO
- Average pressure in July: 30"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed in July
Derby, CO
- Average wind speed in July: 6.1mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).
Average humidity in July
Derby, CO
- Average humidity in July: 42%
The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (39%).
Average rainfall in July
Derby, CO
- Average rainfall in July: 0.59"
The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are January and December (0.08").
Average rainfall days in July
Derby, CO
- Average rainfall days in July: 8.2 days
The month with the highest number of rainy days is July (8.2 days).
The month with the least rainy days is February (1.2 days).
Average snowfall in July
Derby, CO
- Average snowfall in July: 0"
The month with the highest snowfall is October (1.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Derby, CO
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Derby, CO
- Average daylight in July: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in July: 11h and 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in July
Derby, CO
- Average sunshine days in July: 19.6 days
The month with the most sunshine days is December (28.5 days).
The month with the least sunshine days is July (19.6 days).
Average UV index in July
Derby, CO
- Average UV index in July: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in July
Derby, CO
- Average cloud cover in July: 18
The months with the most cloud cover are February, April and May (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).
Average visibility in July
Derby, CO
- 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).
Derby, Colorado, USA
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