September weather forecast and climate
Prescott, AZ

Beautiful sunset above the calm Watson Lake in the Granite Dells of Prescott, Arizona
Beautiful sunset above the calm Watson Lake in the Granite Dells of Prescott, Arizona

Weather in September

The first month of the autumn, September, is also a moderately hot month in Prescott, Arizona, with average temperature ranging between max 79.7°F (26.5°C) and min 59°F (15°C).

Temperature

In September, the average high-temperature slightly decreases, from 85.1°F (29.5°C) in August, to a still warm 79.7°F (26.5°C). In Prescott, in September, the average low-temperature is 59°F (15°C).

Humidity

In September, the average relative humidity in Prescott is 42%.

Rainfall

In Prescott, in September, during 9.8 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. Throughout the year, there are 76.9 rainfall days, and 16.46" (418mm) of precipitation is accumulated.

Snowfall

In Prescott snow does not fall in May through October.

Daylight

In Prescott, the average length of the day in September is 12.4h.

Sunshine

In September, the average sunshine is 9.8h.

UV index

In September, the average daily maximum UV index in Prescott is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Prescott?

In Prescott, in September, the average high-temperature is 79.7°F (26.5°C), and the average low-temperature is 59°F (15°C).

What is the average humidity in September in Prescott?

The average relative humidity in September in Prescott, Arizona, is 42%.

How many days does it rain in September in Prescott?

In Prescott, Arizona, in September, it is raining for 9.8 days, with typically 1.69" (43mm) of accumulated precipitation.

When it does not snow in Prescott?

May through October are months without snowfall in Prescott.

How many hours of daylight does Prescott have in September?

In September, the average length of the day is 12.4h.

How long on average sun shines in September in Prescott?

In Prescott, Arizona, the average sunshine in September is 9.8h.

How high is the UV index in September in Prescott?

In Prescott, Arizona, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in September
Prescott, AZ

Average temperature in September - Prescott, AZ
  • Average high temperature in September: 79.7°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is December (49.1°F).

  • Average low temperature in September: 59°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is December (30.7°F).

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Average pressure in September
Prescott, AZ

Average pressure in September - Prescott, AZ
  • Average pressure in September: 29.9"

The month with the highest atmospheric pressure is January (30.12").
The month with the lowest atmospheric pressure is June (29.83").

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Average wind speed in September
Prescott, AZ

Average wind speed in September - Prescott, AZ
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in September
Prescott, AZ

Average humidity in September - Prescott, AZ
  • Average humidity in September: 42%

The month with the highest relative humidity is December (58%).
The month with the lowest relative humidity is June (23%).

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Average rainfall in September
Prescott, AZ

Average rainfall in September - Prescott, AZ
  • Average rainfall in September: 1.69"

The wettest month (with the highest rainfall) is July (4.33").
The driest month (with the least rainfall) is June (0.24").

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Average rainfall days in September
Prescott, AZ

Average rainfall days in September - Prescott, AZ
  • Average rainfall days in September: 9.8 days

Months with the highest number of rainy days are July and August (15.5 days).
The month with the least rainy days is June (2.3 days).

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Average snowfall in September
Prescott, AZ

Average snowfall in September - Prescott, AZ
  • Average snowfall in September: 0"

The month with the highest snowfall is December (4.13").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Prescott, AZ

Average snowfall days in September - Prescott, AZ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (3.5 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Prescott, AZ

Average daylight in September / Average sunshine in September - Prescott, AZ
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 9.8h

The month with the most sunshine is June (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in September
Prescott, AZ

Average sunshine days in September - Prescott, AZ
  • Average sunshine days in September: 18.5 days

The month with the most sunshine days is May (26.8 days).
The month with the least sunshine days is August (12.8 days).

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Average UV index in September
Prescott, AZ

Average UV index in September - Prescott, AZ
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Prescott, AZ

Average cloud cover in September - Prescott, AZ
  • Average cloud cover in September: 10

The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 7).

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Average visibility in September
Prescott, AZ

Average visibility in September - Prescott, AZ
  • Average visibility in September: 6mi

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

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