September weather forecast
Hereford, AZ

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Hereford, Arizona, with an average temperature varying between 83.1°F (28.4°C) and 64°F (17.8°C).

Temperature

September's arrival brings an average high-temperature of a warm 83.1°F (28.4°C), demonstrating subtle variation from the preceding month. September nights observe an average temperature dip to a refreshing 64°F (17.8°C).

Heat index

The heat index value during September is evaluated at 84.2°F (29°C). Enduring exposure and continuous activity might cause a feeling of tiredness and induce heat cramps.
Data suggests that the heat index is set for environments in shade and with a light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

In Hereford, the average relative humidity in September is 48%.

Rainfall

In Hereford, Arizona, in September, during 10.6 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. In Hereford, during the entire year, the rain falls for 82 days and collects up to 11.85" (301mm) of precipitation.

Snowfall

In Hereford, snow does not fall in April through October.

Daylight

In Hereford, Arizona, the average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 5:56 am and sunset at 6:43 pm. On the last day of September, in Hereford, sunrise is at 6:14 am and sunset at 6:06 pm MST.

Sunshine

In September, the average sunshine is 10.1h.

UV index

The average daily maximum UV index in September in Hereford is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 6 during September translates into the following directions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
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Frequently asked questions

How hot is September in Hereford?

The average high-temperature, in September, in Hereford, is 83.1°F (28.4°C), while the average low-temperature is 64°F (17.8°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 84.2°F (29°C).

What is the average humidity in September in Hereford?

The average relative humidity in September in Hereford is 48%.

How much does it rain in Hereford in September?

In Hereford, Arizona, in September, it is raining for 10.6 days, with typically 1.65" (42mm) of accumulated precipitation.

When it does not snow in Hereford?

April through October are months without snowfall in Hereford.

What is the average length of the day in September in Hereford?

In Hereford, Arizona, the average day length in September is 12h and 20min.

What time are sunrise and sunset in September in Hereford?

On the first day of September, sunrise is at 5:56 am and sunset at 6:43 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 6:06 pm MST.

How many hours of sunshine does Hereford have in September?

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

What is the UV index reading in September in Hereford?

In Hereford, Arizona, the average daily maximum UV index in September 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 September
Hereford, AZ

Average temperature in September - Hereford, AZ
  • Average high temperature in September: 83.1°F

The warmest month (with the highest average high temperature) is June (91°F).
The month with the lowest average high temperature is December (56.1°F).

  • Average low temperature in September: 64°F

The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).

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Average pressure in September
Hereford, AZ

Average pressure in September - Hereford, AZ
  • Average pressure in September: 29.91"Hg

The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in September
Hereford, AZ

Average wind speed in September - Hereford, AZ
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in September
Hereford, AZ

Average humidity in September - Hereford, AZ
  • Average humidity in September: 48%

The month with the highest relative humidity is December (49%).
The month with the lowest relative humidity is May (22%).

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Average rainfall in September
Hereford, AZ

Average rainfall in September - Hereford, AZ
  • Average rainfall in September: 1.65"

The wettest month (with the highest rainfall) is July (3.23").
The driest months (with the least rainfall) are April and May (0.08").

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Average rainfall days in September
Hereford, AZ

Average rainfall days in September - Hereford, AZ
  • Average rainfall days in September: 10.6 days

The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is May (2 days).

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Average snowfall in September
Hereford, AZ

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

The month with the highest snowfall is December (1.3").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Hereford, AZ

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

The month with the highest number of snowfall days is December (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Hereford, AZ
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in September: 10h and 1min

The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

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Average sunshine days in September
Hereford, AZ

Average sunshine days in September - Hereford, AZ
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is May (28.6 days).
The month with the least sunshine days is July (7.8 days).

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Average UV index in September
Hereford, AZ

Average UV index in September - Hereford, AZ
  • Average UV index in September: 6

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

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Average cloud cover in September
Hereford, AZ

Average cloud cover in September - Hereford, AZ
  • Average cloud cover in September: 16

The month with the most cloud cover is July (Cloud cover 22).
The month with the least cloud cover is May (Cloud cover 7).

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Average visibility in September
Hereford, AZ

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

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

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Hereford, Arizona, USA

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