September weather forecast
Farmington, UT

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Weather in September

September wraps Farmington, Utah, in a soft duvet of autumn, mellowing down the blistering summer heat. The ephemeral month reduces heat considerably, with top temperatures being relegated to 72.3°F (22.4°C). While holding on to the summer echo, September gradually slips into Fall, tempering the harsher August heat. The cityscape is dappled with varying shades of red and orange, signaling the onset of the fall season. The fluctuating weather pattern creates an amalgam of lukewarm sunny days and cool evenings.

Temperature

The transition to September in Farmington results in a modest reduction in average high-temperature, moving from a warm 81.1°F (27.3°C) in August to a pleasant 72.3°F (22.4°C). An average nighttime temperature of 50.9°F (10.5°C) is observed during September.

Humidity

In September, the average relative humidity in Farmington is 45%.

Rainfall

In Farmington, in September, during 5.5 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Farmington, during the entire year, the rain falls for 96.6 days and collects up to 14.02" (356mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Farmington, the average length of the day in September is 12h and 27min.
On the first day of September, sunrise is at 6:55 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:10 pm MDT.

Sunshine

In Farmington, the average sunshine in September is 10.1h.

UV index

In September, the average daily maximum UV index in Farmington is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 4 in September leads to these guidelines:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September in Farmington?

Farmington in September has an average high-temperature of 72.3°F (22.4°C) and an average low-temperature of 50.9°F (10.5°C).

What is the average humidity in September in Farmington?

In Farmington, Utah, the average relative humidity in September is 45%.

How many days does it rain in September in Farmington?

In September, in Farmington, Utah, the rain falls for 5.5 days. Throughout September, 0.63" (16mm) of precipitation is accumulated.

When it does not snow in Farmington?

In Farmington, Utah, snow does not fall in June through September.

Does it snow in Farmington in September?

In Farmington, Utah, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Farmington have in September?

In September, the average day length in Farmington is 12h and 27min.

When are sunrise and sunset in September in Farmington?

In September, on the first day of the month, sunrise is at 6:55 am and sunset at 7:59 pm. On the last day of the month, in Farmington, Utah, sunrise is at 7:23 am and sunset at 7:10 pm MDT.

How many hours of sunshine does Farmington have in September?

The average sunshine duration in September in Farmington is 10.1h.

What is the UV index intensity in September in Farmington?

In Farmington, Utah, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to 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 September
Farmington, UT

Average temperature in September - Farmington, UT
  • Average high temperature in September: 72.3°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.1°F).

  • Average low temperature in September: 50.9°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).

Average pressure in September
Farmington, UT

Average pressure in September - Farmington, UT
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in September
Farmington, UT

Average wind speed in September - Farmington, UT
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is March (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).

Average humidity in September
Farmington, UT

Average humidity in September - Farmington, UT
  • Average humidity in September: 45%

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (39%).

Average rainfall in September
Farmington, UT

Average rainfall in September - Farmington, UT
  • Average rainfall in September: 0.63"

The wettest month (with the highest rainfall) is February (2.13").
The driest month (with the least rainfall) is August (0.16").

Average rainfall days in September
Farmington, UT

Average rainfall days in September - Farmington, UT
  • Average rainfall days in September: 5.5 days

The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is August (3.3 days).

Average snowfall in September
Farmington, UT

Average snowfall in September - Farmington, UT
  • Average snowfall in September: 0"

The month with the highest snowfall is January (11.22").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Farmington, UT

Average snowfall days in September - Farmington, UT
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Farmington, UT

Average daylight in September / Average sunshine in September - Farmington, UT
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 10h and 1min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).

Average sunshine days in September
Farmington, UT

Average sunshine days in September - Farmington, UT
  • Average sunshine days in September: 22.7 days

The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is February (11.4 days).

Average UV index in September
Farmington, UT

Average UV index in September - Farmington, UT
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Farmington, UT

Average cloud cover in September - Farmington, UT
  • Average cloud cover in September: 12

The months with the most cloud cover are January and February (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 9).

Average visibility in September
Farmington, UT

Average visibility in September - Farmington, UT
  • Average visibility in September: 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).

Farmington, Utah, USA

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