September weather forecastClovis, NM
September
Weather in September
Autumn falls upon Clovis in September with a noticeable reduction in temperature. With daytime temperatures starting to cool down, outdoor enthusiasts can enjoy perfect hiking weather. Cloud cover increases to 19%, indicating less sunshine during the month. September ends with an expectation of further cooling temperatures ushering in the fall season.Temperature
As Clovis enters September, the average high-temperature subtly lowers from the a tropical 90.1°F (32.3°C) of August to a moderately hot 81.7°F (27.6°C). During September, Clovis observes a consistent average nighttime temperature of 61.2°F (16.2°C).Heat index
In September, the average heat index is estimated at 82.4°F (28°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.Research indicates the heat index considers values in shaded locales and with light winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Humidity
In Clovis, the average relative humidity in September is 53%.Rainfall
In Clovis, during September, the rain falls for 12.1 days and regularly aggregates up to 1.73" (44mm) of precipitation. Throughout the year, there are 86.6 rainfall days, and 11.77" (299mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Clovis, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:26 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:37 pm MDT.
Sunshine
The average sunshine in September is 10.2h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high daily UV index of 5 during September translates into the following directions:
Undertake protective steps - Preventing sun damage is advised. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Clovis, NM
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is June (90.7°F).
The month with the lowest average high temperature is December (50°F).
- Average low temperature in September: 61.2°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is December (31.1°F).
Average pressure in September
Clovis, NM
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Clovis, NM
- Average wind speed in September: 10.6mph
The windiest month (with the highest average wind speed) is April (13.3mph).
The calmest month (with the lowest average wind speed) is August (9.9mph).
Average humidity in September
Clovis, NM
- Average humidity in September: 53%
The month with the highest relative humidity is December (54%).
The month with the lowest relative humidity is April (34%).
Average rainfall in September
Clovis, NM
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is October (1.81").
The driest month (with the least rainfall) is November (0.28").
Average rainfall days in September
Clovis, NM
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is November (2.6 days).
Average snowfall in September
Clovis, NM
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (1.34").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Clovis, NM
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is 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
Clovis, NM
- Average daylight in September: 12h and 24min
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 12min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are January, February and December (Average sunshine: 7h and 0min).
Average sunshine days in September
Clovis, NM
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is January (26.4 days).
The month with the least sunshine days is August (14 days).
Average UV index in September
Clovis, NM
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Clovis, NM
- Average cloud cover in September: 19
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 13).
Average visibility in September
Clovis, 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).





