September weather forecast and climate
Costilla, NM

Weather in September

The first month of the autumn, September, is still a pleasant month in Costilla, New Mexico, with average temperature fluctuating between 68.5°F (20.3°C) and 43.7°F (6.5°C).

Temperature

In September, the average high-temperature slightly decreases, from a warm 74.8°F (23.8°C) in August, to an agreeable 68.5°F (20.3°C). The average low-temperature, in September, is 43.7°F (6.5°C).

Humidity

In September, the average relative humidity in Costilla is 51%.

Rainfall

In Costilla, it is raining for 7.1 days, with typically 0.59" (15mm) of accumulated precipitation. In Costilla, during the entire year, the rain falls for 72.2 days and collects up to 8.82" (224mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. September is the first month it typically snows in Costilla. Throughout September, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, there are 57.6 snowfall days, and 28.58" (726mm) of snow is accumulated.

Daylight

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

Sunshine

The average sunshine in Costilla is 11h.

UV index

In Costilla, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
[Resources]

FAQ

What is the temperature in September in Costilla?

The average high-temperature, in September, in Costilla, is 68.5°F (20.3°C), while the average low-temperature is 43.7°F (6.5°C).

What is the average humidity in September in Costilla?

In September, the average relative humidity in Costilla is 51%.

How much does it rain in Costilla in September?

In September, the rain falls for 7.1 days. Throughout September, 0.59" (15mm) of precipitation is accumulated.

When does it start to snow in Costilla?

September is the first month it typically snows in Costilla. Throughout September, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow.

How many hours of daylight does Costilla have in September?

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

How long on average sun shines in September in Costilla?

The average sunshine in September in Costilla is 11h.

How high is the UV index in September in Costilla?

The average daily maximum UV index in September in Costilla is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in September
Costilla, NM

Average temperature in September - Costilla, NM
  • Average high temperature in September: 68.5°F

The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in September: 43.7°F

The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).

[Resources]

Average pressure in September
Costilla, NM

Average pressure in September - Costilla, NM
  • Average pressure in September: 30.03"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is April (29.89").

[Resources]

Average wind speed in September
Costilla, NM

Average wind speed in September - Costilla, NM
  • Average wind speed in September: 6.5mph

The windiest months (with the highest average wind speed) are April and May (8.9mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).

[Resources]

Average humidity in September
Costilla, NM

Average humidity in September - Costilla, NM
  • Average humidity in September: 51%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is June (38%).

[Resources]

Average rainfall in September
Costilla, NM

Average rainfall in September - Costilla, NM
  • Average rainfall in September: 0.59"

The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is November (0.43").

[Resources]

Average rainfall days in September
Costilla, NM

Average rainfall days in September - Costilla, NM
  • Average rainfall days in September: 7.1 days

The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is November (1.3 days).

[Resources]

Average snowfall in September
Costilla, NM

Average snowfall in September - Costilla, NM
  • Average snowfall in September: 0.2"

The month with the highest snowfall is March (5.55").
Months with the least snowfall are July and August (0").

[Resources]

Average snowfall days in September
Costilla, NM

Average snowfall days in September - Costilla, NM
  • Average snowfall days in September: 0.4 days

The month with the highest number of snowfall days is February (10.1 days).
Months with the least snowfall days are July and August (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Costilla, NM

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

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in September: 11h

The month with the most sunshine is June (Average sunshine: 11.8h).
The month with the least sunshine is January (Average sunshine: 6.5h).

[Resources]

Average sunshine days in September
Costilla, NM

Average sunshine days in September - Costilla, NM
  • Average sunshine days in September: 20.5 days

The month with the most sunshine days is October (24.1 days).
The month with the least sunshine days is July (13.3 days).

[Resources]

Average UV index in September
Costilla, NM

Average UV index in September - Costilla, NM
  • Average UV index in September: 4

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, October, November and December (UV index 2).

[Resources]

Average cloud cover in September
Costilla, NM

Average cloud cover in September - Costilla, NM
  • Average cloud cover in September: 15

The month with the most cloud cover is January (Cloud cover 31).
Months with the least cloud cover are June and October (Cloud cover 14).

[Resources]

Average visibility in September
Costilla, NM

Average visibility in September - Costilla, NM
  • Average visibility in September: 6mi

Months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

[Resources]