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 average high-temperature shows a slight dip in September, from August's moderately hot 75.2°F (24°C) to a pleasant 69.3°F (20.7°C). September nights present a stark temperature decrease to a chilly 44.8°F (7.1°C).Humidity
The average relative humidity in September is 55%.Rainfall
In Llano, during September, the rain falls for 13.5 days and regularly aggregates up to 1.57" (40mm) of precipitation. Throughout the year, there are 105 rainfall days, and 15.47" (393mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 46.7 snowfall days, and 31.46" (799mm) of snow is accumulated.Daylight
The average length of the day in September in Llano is 12h and 23min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:57 am and sunset at 6:47 pm MDT.
Sunshine
In Llano, the average sunshine in September is 11.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 4 in September translates into these instructions:
Put precautions into practice - Guidance to elude sunburn is provided. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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 in Llano?
When does it start snowing?
What is the average length of the day in September?
When are sunrise and sunset in September in Llano?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Llano, NM
- Average high temperature in September: 69.3°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 (34.3°F).
- Average low temperature in September: 44.8°F
The month with the highest average low temperature is July (51.8°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in September
Llano, NM
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is April (29.89"Hg).
Average wind speed in September
Llano, NM
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Llano, NM
- Average humidity in September: 55%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is June (38%).
Average rainfall in September
Llano, NM
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is July (3.86").
The driest month (with the least rainfall) is November (0.59").
Average rainfall days in September
Llano, NM
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (22.3 days).
The month with the least rainy days is November (2.1 days).
Average snowfall in September
Llano, NM
- Average snowfall in September: 0.12"
The months with the highest snowfall are February and December (5.35").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Llano, NM
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Llano, NM
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
Llano, NM
- Average sunshine days in September: 12.1 days
The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is July (6.3 days).
Average UV index in September
Llano, NM
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Llano, NM
- Average cloud cover in September: 14
The months with the most cloud cover are January and December (Cloud cover 27).
The months with the least cloud cover are June and October (Cloud cover 13).
Average visibility in September
Llano, NM
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Llano, New Mexico, USA
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