July weather forecast
Dillon, CO

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The brown and golden trees near the iconic Dillon reservoir in Colorado
The brown and golden trees near the iconic Dillon reservoir in Colorado

Weather in July

July, the heart of the summer season, sees the least snowfall, reaching a negligible accumulation of 0.47" (12mm). Dillon experiences its warmest temperatures at this time of year, drawing in people seeking sun-brushed landscapes. Outdoor activities are in full swing, with hikers and bikers capitalizing on the extended daylight hours. Nature takes on a vibrant green, with flowers adding a splash of color to the grassy backdrop. The pleasant weather, complemented by clear skies, helps stage perfect conditions for stargazing.

Temperature

Dillon's July weather, with an average high temperature of 67.1°F (19.5°C) and an average low temperature of 39.7°F (4.3°C), tends to be the warmest of the year.

Humidity

In July, the average relative humidity is 61%.

Rainfall

The month with the most rainfall is July, when the rain falls for 22.7 days and typically aggregates up to 3.39" (86mm) of precipitation.

Snowfall

Months with snowfall are January through December. The month with the least snowfall is July, when snow falls for 1.8 days and typically aggregates up to 0.47" (12mm) of snow.

Daylight

In July, the average length of the day is 14h and 38min.
On the first day of July, sunrise is at 5:40 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:17 pm MDT.

Sunshine

The average sunshine in July is 11.1h.

UV index

The months with the highest UV index in Dillon are July and August, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: During July, 4 as the daily maximum UV index converts into the following advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Updated: Jul 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the warmest month?

July proves to be the warmest month, recording an average peak temperature of 67.1°F (19.5°C) and a minimum temperature of 39.7°F (4.3°C).

What is the usual temperature for Dillon in July?

The high-temperature, in July, in Dillon, records 67.1°F (19.5°C), while the low-temperature is 39.7°F (4.3°C).

What is the average humidity in July in Dillon?

The average relative humidity in July is 61%.

What is the rainiest month?

July is the month with the most rainfall. Rain falls for 22.7 days and accumulates 3.39" (86mm) of precipitation.

How much does it rain in July?

In Dillon, in July, during 22.7 rainfall days, 3.39" (86mm) of precipitation is typically accumulated.

When it does not snow?

The month with the least snowfall is July, when snow falls for 1.8 days and typically aggregates up to 0.47" (12mm) of snow.

How many days does it snow in July?

In Dillon, in July, during 1.8 snowfall days, 0.47" (12mm) of snow is typically accumulated.

What is the average length of the day in July?

In July, the average day length in Dillon is 14h and 38min.

When is the sunrise / sunset in July?

In July, on the first day of the month, sunrise is at 5:40 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:17 pm MDT.

How many hours of sunshine does Dillon have in July?

The average sunshine duration in July is 11.1h.

What is the month with the highest UV index?

July and August, with an average maximum UV index of 4, are months with the highest UV index.

What is the UV index intensity in July?

The average daily maximum UV index in July is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Dillon, CO

Average temperature in July - Dillon, CO
  • Average high temperature in July: 67.1°F

The warmest month (with the highest average high temperature) is July (67.1°F).
The month with the lowest average high temperature is December (22.5°F).

  • Average low temperature in July: 39.7°F

The month with the highest average low temperature is July (39.7°F).
The coldest month (with the lowest average low temperature) is December (0.9°F).

Average pressure in July
Dillon, CO

Average pressure in July - Dillon, CO
  • Average pressure in July: 30.05"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is April (29.93"Hg).

Average wind speed in July
Dillon, CO

Average wind speed in July - Dillon, CO
  • Average wind speed in July: 5mph

The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

Average humidity in July
Dillon, CO

Average humidity in July - Dillon, CO
  • Average humidity in July: 61%

The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is June (53%).

Average rainfall in July
Dillon, CO

Average rainfall in July - Dillon, CO
  • Average rainfall in July: 3.39"

The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is January (1.06").

Average rainfall days in July
Dillon, CO

Average rainfall days in July - Dillon, CO
  • Average rainfall days in July: 22.7 days

The month with the highest number of rainy days is July (22.7 days).
The month with the least rainy days is November (2.8 days).

Average snowfall in July
Dillon, CO

Average snowfall in July - Dillon, CO
  • Average snowfall in July: 0.47"

The month with the highest snowfall is April (18.27").
The month with the least snowfall is July (0.47").

Average snowfall days in July
Dillon, CO

Average snowfall days in July - Dillon, CO
  • Average snowfall days in July: 1.8 days

The month with the highest number of snowfall days is April (21 days).
The month with the least snowfall days is July (1.8 days).

Average daylight in July /
Average sunshine in July
Dillon, CO

Average daylight in July / Average sunshine in July - Dillon, CO
  • Average daylight in July: 14h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in July: 11h and 1min

The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).

Average sunshine days in July
Dillon, CO

Average sunshine days in July - Dillon, CO
  • Average sunshine days in July: 5.3 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (5.3 days).

Average UV index in July
Dillon, CO

Average UV index in July - Dillon, CO
  • Average UV index in July: 4

The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are February, November and December (UV index 1).

Average cloud cover in July
Dillon, CO

Average cloud cover in July - Dillon, CO
  • Average cloud cover in July: 26

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 19).

Average visibility in July
Dillon, CO

Average visibility in July - Dillon, CO
  • Average visibility in July: 6mi

The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).

Dillon, Colorado, USA

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