Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a hot 86.9°F (30.5°C) in August to a warm 79.9°F (26.6°C). In Mountainair, the average temperature during the nights of September drops to a moderate 60.6°F (15.9°C).Humidity
In September, the average relative humidity is 42%.Rainfall
In Mountainair, during September, the rain falls for 9.6 days and regularly aggregates up to 0.94" (24mm) of precipitation. In Mountainair, during the entire year, the rain falls for 78.7 days and collects up to 6.73" (171mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:30 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:49 pm MDT.
Sunshine
In September, the average sunshine is 11.3h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 5 in September leads to these guidelines:
Adopt protective measures - It is advised to guard against sun damage. To guard against the harmful effects of the Sun, minimize exposure during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Mountainair, NM
- Average high temperature in September: 79.9°F
The warmest month (with the highest average high temperature) is June (88.9°F).
The month with the lowest average high temperature is January (45.7°F).
- Average low temperature in September: 60.6°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in September
Mountainair, NM
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is April (29.88"Hg).
Average wind speed in September
Mountainair, NM
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in September
Mountainair, NM
- Average humidity in September: 42%
The month with the highest relative humidity is January (58%).
The month with the lowest relative humidity is June (25%).
Average rainfall in September
Mountainair, NM
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is March (0.24").
Average rainfall days in September
Mountainair, NM
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in September
Mountainair, NM
- Average snowfall in September: 0"
The month with the highest snowfall is December (1.61").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Mountainair, NM
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (3.4 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mountainair, NM
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 11h and 2min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 7h and 12min).
Average sunshine days in September
Mountainair, NM
- Average sunshine days in September: 15 days
The month with the most sunshine days is January (25.4 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Mountainair, NM
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Mountainair, NM
- Average cloud cover in September: 12
The month with the most cloud cover is December (Cloud cover 18).
The months with the least cloud cover are June and October (Cloud cover 10).
Average visibility in September
Mountainair, NM
- 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).
Mountainair, New Mexico, USA
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