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
September is marked by a subtle drop in average high-temperatures, transitioning from a tropical 88.9°F (31.6°C) in August to a warm 81.3°F (27.4°C). September nights observe an average temperature dip to an enjoyable 60.8°F (16°C).Heat index
September's mean heat index is evaluated at 82.4°F (28°C). Enduring exposure and continuous activity might cause a feeling of tiredness and induce heat cramps.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
The average relative humidity in September is 48%.Rainfall
In Fort Sumner, in September, it is raining for 9.2 days, with typically 1.06" (27mm) of accumulated precipitation. In Fort Sumner, during the entire year, the rain falls for 78.6 days and collects up to 9.06" (230mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Fort Sumner, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:30 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:41 pm MDT.
Sunshine
In September, the average sunshine is 10.8h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 5 during September translates into these guidelines:
Undertake protective steps - Preventing sun damage is advised. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Fort Sumner in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Fort Sumner have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Fort Sumner have in September?
What is the UV index intensity in September?
Average temperature in September
Fort Sumner, NM
- Average high temperature in September: 81.3°F
The warmest months (with the highest average high temperature) are June and July (90°F).
The month with the lowest average high temperature is December (49.3°F).
- Average low temperature in September: 60.8°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in September
Fort Sumner, NM
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is April (29.86"Hg).
Average wind speed in September
Fort Sumner, NM
- Average wind speed in September: 10.1mph
The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (9mph).
Average humidity in September
Fort Sumner, NM
- Average humidity in September: 48%
The month with the highest relative humidity is December (52%).
The month with the lowest relative humidity is April (31%).
Average rainfall in September
Fort Sumner, NM
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Fort Sumner, NM
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is July (12.5 days).
The month with the least rainy days is November (2.4 days).
Average snowfall in September
Fort Sumner, NM
- Average snowfall in September: 0"
The month with the highest snowfall is November (1.85").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Fort Sumner, NM
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (3.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Fort Sumner, 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: 10h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 7h and 6min).
Average sunshine days in September
Fort Sumner, NM
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is November (25.5 days).
The month with the least sunshine days is July (14 days).
Average UV index in September
Fort Sumner, NM
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Fort Sumner, NM
- Average cloud cover in September: 16
The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 12).
Average visibility in September
Fort Sumner, 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).
Fort Sumner, New Mexico, USA
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