September weather forecast and climate
Roy, NM

September, the first month of the autumn, in Roy, is still a warm month, with average temperature varying between 52.7°F (11.5°C) and 73.8°F (23.2°C).

Temperature

In September, the average high-temperature marginally drops, from a warm 80.2°F (26.8°C) in August, to a still moderately hot 73.8°F (23.2°C). The average low-temperature, in Roy, is 52.7°F (11.5°C).

Humidity

In September, the average relative humidity in Roy is 52%.

Rainfall

In Roy, in September, during 8 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. In Roy, during the entire year, the rain falls for 76.1 days and collects up to 9.17" (233mm) of precipitation.

Snowfall

In Roy snow does not fall in June through September.

Daylight

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

Sunshine

The average sunshine in Roy is 10.9h.

UV index

In September, the average daily maximum UV index in Roy is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Roy?

In Roy, New Mexico, in September, the average high-temperature is 73.8°F (23.2°C), and the average low-temperature is 52.7°F (11.5°C).

What is the average humidity in September in Roy?

In September, the average relative humidity is 52%.

How many days does it rain in September in Roy?

In September, in Roy, New Mexico, the rain falls for 8 days. Throughout September, 0.87" (22mm) of precipitation is accumulated.

Does it snow in Roy in September?

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

When it does not snow in Roy?

In Roy, New Mexico, snow does not fall in June through September.

How many hours of daylight does Roy have in September?

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

How many hours of sunshine does Roy have in September?

The average sunshine in September in Roy, New Mexico, is 10.9h.

What is the UV index intensity in September in Roy?

In Roy, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe exposure to the Sun's UV rays.
Average temperature in September - Roy, NM
  • Average high temperature in September: 23.2°C

The warmest month (with the highest average high temperature) is July (27.5°C).
The month with the lowest average high temperature is December (5.6°C).

  • Average low temperature in September: 11.5°C

The month with the highest average low temperature is July (15.3°C).
The coldest month (with the lowest average low temperature) is December (-4.5°C).

Average pressure in September - Roy, NM
  • Average pressure in September: 1016mbar

The month with the highest atmospheric pressure is January (1020.4mbar).
The month with the lowest atmospheric pressure is April (1011.6mbar).

Average wind speed in September - Roy, NM
  • Average wind speed in September: 12.5km/h

The windiest month (with the highest average wind speed) is April (17.6km/h).
The calmest month (with the lowest average wind speed) is August (11.5km/h).

Average humidity in September - Roy, NM
  • Average humidity in September: 52%

Months with the highest relative humidity are January and December (61%).
Months with the lowest relative humidity are April and June (37%).

Average rainfall in September - Roy, NM
  • Average rainfall in September: 22mm

The wettest month (with the highest rainfall) is July (42mm).
The driest month (with the least rainfall) is November (12mm).

Average rainfall days in September - Roy, NM
  • Average rainfall days in September: 8 days

The month with the highest number of rainy days is July (11.5 days).
The month with the least rainy days is November (2.6 days).

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

The month with the highest snowfall is January (128mm).
Months with the least snowfall are June, July, August and September (0mm).

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

The month with the highest number of snowfall days is December (7.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 14.6h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in September: 10.9h

The month with the most sunshine is June (Average sunshine: 11.9h).
Months with the least sunshine are January and February (Average sunshine: 7).

Average sunshine days in September - Roy, NM
  • Average sunshine days in September: 19.4 days

The month with the most sunshine days is November (24.6 days).
The month with the least sunshine days is July (17.3 days).

Average UV index in September - Roy, NM
  • Average UV index in September: 5

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

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

Months with the highest visibility are March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January and February (9km).