September weather forecast and climate
McDonald, NM

September, the first month of the autumn, in McDonald, is also a moderately hot month, with average temperature fluctuating between 64.6°F (18.1°C) and 82.4°F (28°C).

Temperature

In September, the average high-temperature slightly decreases, from a hot 91°F (32.8°C) in August, to a warm 82.4°F (28°C). In McDonald, the average low-temperature is 64.6°F (18.1°C).

Heat index

The average heat index in September is calculated to 83.8°F (28.8°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, differences in body mass, height, and shape, clothing), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

With an average relative humidity of 54%, September is the most humid month.

Rainfall

September is the month with the most rainfall. Rain falls for 11.7 days and accumulates 2.4" (61mm) of precipitation.

Snowfall

May through September are months without snowfall in McDonald.

Daylight

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

Sunshine

The average sunshine in McDonald is 9.9h.

UV index

In September, the average daily maximum UV index in McDonald is 6. A UV Index reading of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in McDonald?

In September, in McDonald, the average high-temperature is 82.4°F (28°C), and the average low-temperature is 64.6°F (18.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that combines relative humidity and air temperature, in September is appraised at 83.8°F (28.8°C).

What is the most humid month in McDonald?

The most humid month in McDonald is September, with an average relative humidity of 54%.

What is the average humidity in September in McDonald?

In September, the average relative humidity in McDonald, New Mexico, is 54%.

How many days does it rain in September in McDonald?

In September, in McDonald, New Mexico, the rain falls for 11.7 days. Throughout September, 2.4" (61mm) of precipitation is accumulated.

What is the rainiest month in McDonald?

September is the month with the most rainfall in McDonald. Rain falls for 11.7 days and accumulates 2.4" (61mm) of precipitation.

Does it snow in McDonald in September?

In McDonald, New Mexico, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in McDonald?

May through September are months without snowfall in McDonald, New Mexico.

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

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

How many hours of sunshine does McDonald have in September?

In McDonald, New Mexico, the average sunshine in September is 9.9h.

How high is the UV index in September in McDonald?

The average daily maximum UV index in September in McDonald, New Mexico, is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - McDonald, NM
  • Average high temperature in September: 28°C

The warmest month (with the highest average high temperature) is June (33°C).
The month with the lowest average high temperature is January (11.6°C).

  • Average low temperature in September: 18.1°C

The month with the highest average low temperature is July (22°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).

Average pressure in September - McDonald, NM
  • Average pressure in September: 1014.5mbar

The month with the highest atmospheric pressure is January (1020.2mbar).
The month with the lowest atmospheric pressure is June (1010.3mbar).

Average wind speed in September - McDonald, NM
  • Average wind speed in September: 17km/h

The windiest month (with the highest average wind speed) is April (21.6km/h).
The calmest month (with the lowest average wind speed) is August (16.5km/h).

Average humidity in September - McDonald, NM
  • Average humidity in September: 54%

The month with the highest relative humidity is September (54%).
The month with the lowest relative humidity is April (32%).

Average rainfall in September - McDonald, NM
  • Average rainfall in September: 61mm

The wettest month (with the highest rainfall) is September (61mm).
The driest month (with the least rainfall) is February (6mm).

Average rainfall days in September - McDonald, NM
  • Average rainfall days in September: 11.7 days

The month with the highest number of rainy days is September (11.7 days).
Months with the least rainy days are February and November (2.5 days).

Average snowfall in September - McDonald, NM
  • Average snowfall in September: 0mm

The month with the highest snowfall is December (30mm).
Months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in September - McDonald, NM
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (2.5 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - McDonald, NM
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 9.9h

The month with the most sunshine is June (Average sunshine: 11.9h).
The month with the least sunshine is December (Average sunshine: 6.9h).

Average sunshine days in September - McDonald, NM
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is January (27.2 days).
The month with the least sunshine days is September (16.5 days).

Average UV index in September - McDonald, NM
  • Average UV index in September: 6

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

Average visibility in September - McDonald, NM
  • Average visibility in September: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).