September weather forecast and climate
Farmington, CA

Weather in September

The first month of the autumn, September, is still a tropical month in Farmington, California, with average temperature varying between 90°F (32.2°C) and 59.7°F (15.4°C).

Temperature

In September, the average high-temperature marginally drops, from a sweltering 95.5°F (35.3°C) in August, to a hot 90°F (32.2°C). In Farmington, the average low-temperature is 59.7°F (15.4°C).

Heat index

The average heat index is appraised at a tropical 91°F (32.8°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, differences in body mass, height, and shape, pregnancy, and wind affect individual temperature impact. 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 September, the average relative humidity in Farmington is 41%.

Rainfall

In Farmington, it is raining for 2 days, with typically 0.08" (2mm) of accumulated precipitation. In Farmington, California, during the entire year, the rain falls for 59.3 days and collects up to 8.23" (209mm) of precipitation.

Snowfall

In Farmington snow does not fall in January through November.

Daylight

The average length of the day in Farmington is 12.4h.

Sunshine

In September, the average sunshine is 11.5h.

UV index

In September, the average daily maximum UV index in Farmington is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Farmington?

In Farmington, in September, the average high-temperature is 90°F (32.2°C), and the average low-temperature is 59.7°F (15.4°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), that combines air temperature and relative humidity, in September is estimated at 91°F (32.8°C).

What is the average humidity in September in Farmington?

In September, the average relative humidity is 41%.

How many days does it rain in September in Farmington?

In Farmington, California, in September, during 2 rainfall days, 0.08" (2mm) of precipitation is typically accumulated.

When it does not snow in Farmington?

In Farmington, California, snow does not fall in January through November.

How many hours of daylight does Farmington have in September?

The average length of the day in September in Farmington is 12.4h.

How many hours of sunshine does Farmington have in September?

In Farmington, California, the average sunshine in September is 11.5h.

What is the UV index reading in September in Farmington?

In September, the average daily maximum UV index in Farmington, California, is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Farmington, CA

Average temperature in September - Farmington, CA
  • Average high temperature in September: 90°F

The warmest month (with the highest average high temperature) is July (96.4°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in September: 59.7°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is December (41°F).

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Average pressure in September
Farmington, CA

Average pressure in September - Farmington, CA
  • Average pressure in September: 29.93"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in September
Farmington, CA

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

The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.9mph).

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Average humidity in September
Farmington, CA

Average humidity in September - Farmington, CA
  • Average humidity in September: 41%

The month with the highest relative humidity is January (72%).
The month with the lowest relative humidity is July (37%).

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Average rainfall in September
Farmington, CA

Average rainfall in September - Farmington, CA
  • Average rainfall in September: 0.08"

The wettest month (with the highest rainfall) is March (1.65").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in September
Farmington, CA

Average rainfall days in September - Farmington, CA
  • Average rainfall days in September: 2 days

The month with the highest number of rainy days is March (11.3 days).
The month with the least rainy days is August (0.7 days).

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Average snowfall in September
Farmington, CA

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

The month with the highest snowfall is December (0.04").
Months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Farmington, CA

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

The month with the highest number of snowfall days is December (0.1 days).
Months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in September / Average sunshine in September - Farmington, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 11.5h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6h).

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Average sunshine days in September
Farmington, CA

Average sunshine days in September - Farmington, CA
  • Average sunshine days in September: 26.8 days

The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (18.7 days).

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Average UV index in September
Farmington, CA

Average UV index in September - Farmington, CA
  • Average UV index in September: 5

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Farmington, CA

Average cloud cover in September - Farmington, CA
  • Average cloud cover in September: 6

The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in September
Farmington, CA

Average visibility in September - Farmington, CA
  • 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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