June weather forecast
Derby, CO

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Weather in June

The first month of the summer, June, is a warm month in Derby, Colorado, with an average temperature fluctuating between 56.5°F (13.6°C) and 84.2°F (29°C).

Temperature

As June sets, the average high-temperature displays a significant increase, moving up from a pleasant 69.1°F (20.6°C) in May to a warm 84.2°F (29°C). Derby's nighttime average of 56.5°F (13.6°C) during June reflects a substantial decrease from the daytime temperature.

Heat index

For June, the heat index is calculated to be 84.2°F (29°C). With prolonged exposure and constant activity, one might feel exhausted and experience heat cramps.
For clarity, heat index numbers account for light winds and areas under shade. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. 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. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.

Humidity

In Derby, the average relative humidity in June is 40%.

Rainfall

In Derby, during June, the rain falls for 5.7 days and regularly aggregates up to 0.35" (9mm) of precipitation. In Derby, during the entire year, the rain falls for 48.3 days and collects up to 3.19" (81mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The month with the longest days is June, with an average of 15h and 0min of daylight.
On the first day of the month, sunrise is at 5:32 am and sunset at 8:22 pm. On the last day of June, sunrise is at 5:35 am and sunset at 8:32 pm MDT.

Sunshine

June and July, with an average of 11.9h of sunshine, are months with the most sunshine in Derby.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: A maximum high UV index of 6 in June translates into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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Frequently asked questions

Is it hot in Derby during June?

In Derby, in June, the average high-temperature is 84.2°F (29°C), and the average low-temperature is 56.5°F (13.6°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in June is calculated to be 84.2°F (29°C).

What is the average humidity in June in Derby?

The average relative humidity in June is 40%.

How much does it rain in Derby in June?

In Derby, Colorado, during June, the rain falls for 5.7 days and regularly aggregates up to 0.35" (9mm) of precipitation.

When it does not snow in Derby?

June through September are months without snowfall in Derby.

Does it snow in Derby in June?

In June, in Derby, it doesn't snow. May is the latest month when it typically snows.

When are the longest days in Derby?

June has the longest days of the year in Derby, with an average of 15h and 0min of daylight.

How many hours of daylight does Derby have in June?

In Derby, Colorado, the average day length in June is 14h and 57min.

When is the sunrise / sunset in June in Derby?

In June, on the first day of the month, sunrise is at 5:32 am and sunset at 8:22 pm. On the last day of the month, in Derby, sunrise is at 5:35 am and sunset at 8:32 pm MDT.

What is the month with the most sunshine in Derby?

June and July, with an average of 11.9h of sunshine, are months with the most sunshine.

How long on average sun shines in June in Derby?

In June, the average sunshine duration in Derby, Colorado, is 11.9h.

When is the highest UV index in Derby?

The months with the highest UV index in Derby are June through August, with an average maximum UV index of 6.

What is the UV index reading in June in Derby?

The average daily maximum UV index in June in Derby, Colorado, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Derby, CO

Average temperature in June - Derby, CO
  • Average high temperature in June: 84.2°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 June: 56.5°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).

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Average pressure in June
Derby, CO

Average pressure in June - Derby, CO
  • Average pressure in June: 29.91"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).

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Average wind speed in June
Derby, CO

Average wind speed in June - Derby, CO
  • Average wind speed in June: 6.5mph

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).

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Average humidity in June
Derby, CO

Average humidity in June - Derby, CO
  • Average humidity in June: 40%

The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (39%).

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Average rainfall in June
Derby, CO

Average rainfall in June - Derby, CO
  • Average rainfall in June: 0.35"

The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are January and December (0.08").

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Average rainfall days in June
Derby, CO

Average rainfall days in June - Derby, CO
  • Average rainfall days in June: 5.7 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).

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Average snowfall in June
Derby, CO

Average snowfall in June - Derby, CO
  • Average snowfall in June: 0"

The month with the highest snowfall is October (1.42").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in June
Derby, CO

Average snowfall days in June - Derby, CO
  • Average snowfall days in June: 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).

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Average daylight in June /
Average sunshine in June
Derby, CO

Average daylight in June / Average sunshine in June - Derby, CO
  • Average daylight in June: 15h and 0min

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 June: 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).

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Average sunshine days in June
Derby, CO

Average sunshine days in June - Derby, CO
  • Average sunshine days in June: 20.1 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).

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Average UV index in June
Derby, CO

Average UV index in June - Derby, CO
  • Average UV index in June: 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).

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Average cloud cover in June
Derby, CO

Average cloud cover in June - Derby, CO
  • Average cloud cover in June: 15

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).

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Average visibility in June
Derby, CO

Average visibility in June - Derby, CO
  • Average visibility in June: 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).

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Derby, Colorado, USA

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