August weather forecast
Monticello, UT

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Weather in August

Monticello in August experiences a slight shift in the established summer rhythm, albeit temperature remains relatively high at 81.5°F (27.5°C). Occasional showers lend a gentle cooling effect during the warm summer days. August also signifies the waning of summer, with shorter daylight hours gradually hinting at the imminent onset of autumn. Nonetheless, Monticello continues to charm with its grand outdoors, the city continuing its thrilling summer narrative. Augmenting the weather, the festive spirit is alive, making August a special time of the year in Monticello.

Temperature

Monticello starts August with an average high-temperature of a still warm 81.5°F (27.5°C), hinting at a minimal fluctuation from July. Throughout August, Monticello anticipates an average low-temperature of 61.7°F (16.5°C).

Humidity

In Monticello, the average relative humidity in August is 38%.

Rainfall

In Monticello, in August, during 14.1 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, there are 94.8 rainfall days, and 12.72" (323mm) of precipitation is accumulated.

Snowfall

In Monticello, snow does not fall in June through August.

Daylight

In August, the average length of the day is 13h and 35min.
On the first day of August, sunrise is at 6:21 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 7:47 pm MDT.

Sunshine

In Monticello, the average sunshine in August is 11.9h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 6 during August translates into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Updated: Jun 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are August temperatures?

The average high-temperature and low-temperature during August are 81.5°F (27.5°C) and 61.7°F (16.5°C) respectively.

What is the average humidity in August?

The average relative humidity in August is 38%.

How many days does it rain in August?

In Monticello, Utah, during August, the rain falls for 14.1 days and regularly aggregates up to 1.85" (47mm) of precipitation.

When it does not snow?

In Monticello, snow does not fall in June through August.

Does it snow in August?

In Monticello, in August, it doesn't snow. In September, it regularly snows.

What is the average length of the day in August?

In August, the average day length is 13h and 35min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:21 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 7:47 pm MDT.

How long on average sun shines in August?

The average sunshine duration in August is 11.9h.

When is the highest UV index?

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

How high is the UV index in August?

In August, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
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 August
Monticello, UT

Average temperature in August - Monticello, UT
  • Average high temperature in August: 81.5°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in August: 61.7°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).

Average pressure in August
Monticello, UT

Average pressure in August - Monticello, UT
  • Average pressure in August: 29.94"Hg

The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in August
Monticello, UT

Average wind speed in August - Monticello, UT
  • Average wind speed in August: 6.3mph

The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).

Average humidity in August
Monticello, UT

Average humidity in August - Monticello, UT
  • Average humidity in August: 38%

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is June (25%).

Average rainfall in August
Monticello, UT

Average rainfall in August - Monticello, UT
  • Average rainfall in August: 1.85"

The wettest month (with the highest rainfall) is July (1.89").
The driest month (with the least rainfall) is June (0.59").

Average rainfall days in August
Monticello, UT

Average rainfall days in August - Monticello, UT
  • Average rainfall days in August: 14.1 days

The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is November (2.9 days).

Average snowfall in August
Monticello, UT

Average snowfall in August - Monticello, UT
  • Average snowfall in August: 0"

The month with the highest snowfall is December (8.62").
The months with the least snowfall are June, July and August (0").

Average snowfall days in August
Monticello, UT

Average snowfall days in August - Monticello, UT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (10.3 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in August /
Average sunshine in August
Monticello, UT

Average daylight in August / Average sunshine in August - Monticello, UT
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 11h and 5min

The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 24min).

Average sunshine days in August
Monticello, UT

Average sunshine days in August - Monticello, UT
  • Average sunshine days in August: 11.3 days

The month with the most sunshine days is November (22.9 days).
The month with the least sunshine days is July (9.6 days).

Average UV index in August
Monticello, UT

Average UV index in August - Monticello, UT
  • Average UV index in August: 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 August
Monticello, UT

Average cloud cover in August - Monticello, UT
  • Average cloud cover in August: 13

The month with the most cloud cover is December (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 11).

Average visibility in August
Monticello, UT

Average visibility in August - Monticello, UT
  • Average visibility in August: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Monticello, Utah, USA

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