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 implies a soft temperature shift, with average high-temperatures reducing from August's tropical 91.9°F (33.3°C) to a moderately hot 85.5°F (29.7°C). La Mesa's average low-temperature during September nights is observed to be a refreshing 67.8°F (19.9°C).Heat index
For most parts of September, the heat index is computed to be a tropical 86°F (30°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
In September, the average relative humidity in La Mesa is 42%.Rainfall
In September, the rain falls for 9.1 days. Throughout September, 0.94" (24mm) of precipitation is accumulated. Throughout the year, in La Mesa, there are 62.9 rainfall days, and 6.65" (169mm) of precipitation is accumulated.Snowfall
In La Mesa, New Mexico, snow does not fall in March through October.Daylight
In La Mesa, New Mexico, the average length of the day in September is 12h and 21min.On the first day of September in La Mesa, sunrise is at 6:42 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:52 pm MDT.
Sunshine
In September, the average sunshine is 11.2h.UV index
The average daily maximum UV index in September in La Mesa is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 6 during September translates into these guidelines:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
How hot is September in La Mesa?
What is the average humidity in September in La Mesa?
How much does it rain in La Mesa in September?
When it does not snow in La Mesa?
What is the average length of the day in September in La Mesa?
When is the sunrise / sunset in September in La Mesa?
How long on average sun shines in September in La Mesa?
What is the UV index intensity in September in La Mesa?
Average temperature in September
La Mesa, NM
- Average high temperature in September: 85.5°F
The warmest month (with the highest average high temperature) is June (94.6°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in September: 67.8°F
The month with the highest average low temperature is July (74.7°F).
The coldest month (with the lowest average low temperature) is January (37.2°F).
Average pressure in September
La Mesa, NM
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
La Mesa, NM
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).
Average humidity in September
La Mesa, NM
- Average humidity in September: 42%
The month with the highest relative humidity is December (49%).
The months with the lowest relative humidity are April and May (22%).
Average rainfall in September
La Mesa, NM
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is July (1.38").
The driest month (with the least rainfall) is April (0.08").
Average rainfall days in September
La Mesa, NM
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is July (11.7 days).
The month with the least rainy days is April (2.3 days).
Average snowfall in September
La Mesa, NM
- Average snowfall in September: 0"
The months with the highest snowfall are February and December (0.63").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
La Mesa, NM
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (1 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
La Mesa, NM
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- 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: 7h and 0min).
Average sunshine days in September
La Mesa, NM
- Average sunshine days in September: 18.9 days
The month with the most sunshine days is April (28.1 days).
The month with the least sunshine days is July (17.2 days).
Average UV index in September
La Mesa, NM
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
La Mesa, NM
- Average cloud cover in September: 16
The month with the most cloud cover is December (Cloud cover 19).
The months with the least cloud cover are May and June (Cloud cover 9).
Average visibility in September
La Mesa, 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).
La Mesa, New Mexico, USA
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