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
The dawn of September sees an average high-temperature of a warm 84.7°F (29.3°C), subtly contrasting with August's 87.1°F (30.6°C). Ramona records a pronounced decline from the day's peak to an average nighttime low-temperature of 62.1°F (16.7°C) throughout September.Heat index
September's mean heat index is evaluated at a tropical 87.8°F (31°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.Heat index data is primarily for areas with shade and subjected to light winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
The average relative humidity in September in Ramona is 56%.Rainfall
In Ramona, in September, it is raining for 4.4 days, with typically 0.39" (10mm) of accumulated precipitation. In Ramona, during the entire year, the rain falls for 54.6 days and collects up to 6.06" (154mm) of precipitation.Daylight
In September, the average length of the day in Ramona, California, is 12h and 22min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:11 pm. On the last day of September, in Ramona, sunrise is at 6:41 am and sunset at 6:32 pm PDT.
Sunshine
The average sunshine in September in Ramona is 10.5h.UV index
The months with the highest UV index in Ramona are June through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 6 during September translates into the following guidance:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Ramona during September?
What is the average humidity in September in Ramona?
How much does it rain in Ramona in September?
How many hours of daylight does Ramona have in September?
When is the sunrise / sunset in September in Ramona?
How many hours of sunshine does Ramona have in September?
When is the highest UV index in Ramona?
What is the UV index intensity in September in Ramona?
Average temperature in September
Ramona, 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
Ramona, 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
Ramona, 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
Ramona, 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
Ramona, 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
Ramona, 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
Ramona, 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
Ramona, 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
Ramona, 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
Ramona, 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
Ramona, 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).
Ramona, California, USA
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