June weather forecast
Thornton, CO

Weather in June

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

Temperature

In Thornton, the average high-temperature in June increases considerably from an agreeable 69.1°F (20.6°C) in May to a warm 84.2°F (29°C). In Thornton, the average low-temperature is 56.5°F (13.6°C).

Heat index

The average heat index in June is calculated to be 84.2°F (29°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, clothing, differences in body mass, height, and shape), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial 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 is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In June, the average relative humidity is 40%.

Rainfall

In Thornton, during 5.7 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. Throughout the year, in Thornton, there are 48.3 rainfall days, and 3.19" (81mm) of precipitation is accumulated.

Snowfall

In Thornton, snow does not fall in June through September.

Daylight

With an average of 14h and 57min of daylight, June has the longest days of the year in Thornton.
On the first day of the month, sunrise is at 5:33 am and sunset at 8:22 pm. On the last day of June, sunrise is at 5:34 am and sunset at 8:32 pm MDT.

Sunshine

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

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 6 in June interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in June in Thornton?

The average high-temperature, in June, in Thornton, is 84.2°F (29°C), while the average low-temperature is 56.5°F (13.6°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, in June is calculated to be 84.2°F (29°C).

What is the average humidity in June in Thornton?

In June, the average relative humidity is 40%.

How many days does it rain in June in Thornton?

In Thornton, in June, during 5.7 rainfall days, 0.35" (9mm) of precipitation is typically accumulated.

When it does not snow in Thornton?

In Thornton, Colorado, snow does not fall in June through September.

Does it snow in Thornton in June?

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

When are the longest days in Thornton?

With an average of 14h and 57min of daylight, June has the longest days of the year in Thornton, Colorado.

What is the average length of the day in June in Thornton?

The average day length in June in Thornton, Colorado, is 14h and 57min.

When are sunrise and sunset in June in Thornton?

In June, on the first day of the month, sunrise is at 5:33 am and sunset at 8:22 pm. On the last day of the month, in Thornton, Colorado, sunrise is at 5:34 am and sunset at 8:32 pm MDT.

What are the months with the most sunshine in Thornton?

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

How long on average sun shines in June in Thornton?

The average sunshine duration in June in Thornton is 11.9h.

What is the month with the highest UV index in Thornton?

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

How high is the UV index in June in Thornton?

The average daily maximum UV index in June in Thornton is 6. A UV Index estimate 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 sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Thornton, CO

Average temperature in June - Thornton, 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
Thornton, CO

Average pressure in June - Thornton, 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
Thornton, CO

Average wind speed in June - Thornton, 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
Thornton, CO

Average humidity in June - Thornton, 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
Thornton, CO

Average rainfall in June - Thornton, 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
Thornton, CO

Average rainfall days in June - Thornton, 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
Thornton, CO

Average snowfall in June - Thornton, 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
Thornton, CO

Average snowfall days in June - Thornton, 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
Thornton, CO

Average daylight in June / Average sunshine in June - Thornton, CO
  • Average daylight in June: 14h and 57min

The month with the longest days is June (Average daylight: 14h and 57min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in June: 11h and 54min

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
Thornton, CO

Average sunshine days in June - Thornton, 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
Thornton, CO

Average UV index in June - Thornton, 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
Thornton, CO

Average cloud cover in June - Thornton, 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
Thornton, CO

Average visibility in June - Thornton, 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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