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 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
With the onset of September, Santa Ysabel's average high-temperature clocks in at a warm 84.7°F (29.3°C), showing a minor fluctuation from the previous month. In stark contrast to the day's heat, the temperature dips to an average of 62.1°F (16.7°C) during September nights.Heat index
The heat index value during September is computed to be a hot 87.8°F (31°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.Heat index's context suggests values are appropriate for shady areas and slight breezes. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Humidity
In September, the average relative humidity in Santa Ysabel is 56%.Rainfall
In Santa Ysabel, during September, the rain falls for 4.4 days and regularly aggregates up to 0.39" (10mm) of precipitation. Throughout the year, there are 54.6 rainfall days, and 6.06" (154mm) of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:11 pm. On the last day of September, sunrise is at 6:40 am and sunset at 6:32 pm PDT.
Sunshine
In September, the average sunshine is 10.5h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 6 translates into these guidelines:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Santa Ysabel have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September in Santa Ysabel?
When is the highest UV index?
What is the UV index reading in September?
Average temperature in September
Santa Ysabel, CA
- Average high temperature in September: 84.7°F
The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is December (62.8°F).
- Average low temperature in September: 62.1°F
The month with the highest average low temperature is August (63.7°F).
The coldest months (with the lowest average low temperature) are February and December (44.6°F).
Average pressure in September
Santa Ysabel, CA
- Average pressure in September: 29.87"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Santa Ysabel, CA
- Average wind speed in September: 4mph
The windiest month (with the highest average wind speed) is April (5.3mph).
The calmest months (with the lowest average wind speed) are August and September (4mph).
Average humidity in September
Santa Ysabel, CA
- Average humidity in September: 56%
The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).
Average rainfall in September
Santa Ysabel, CA
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is February (1.02").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Santa Ysabel, CA
- Average rainfall days in September: 4.4 days
The month with the highest number of rainy days is March (7.4 days).
The month with the least rainy days is June (1.5 days).
Average daylight in September /
Average sunshine in September
Santa Ysabel, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 10h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in September
Santa Ysabel, CA
- Average sunshine days in September: 22.5 days
The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is July (20.7 days).
Average UV index in September
Santa Ysabel, CA
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Santa Ysabel, CA
- Average cloud cover in September: 9
The month with the most cloud cover is March (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
Santa Ysabel, CA
- 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).
Santa Ysabel, California, USA
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