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 average high-temperature for September is a still hot 88.7°F, closely aligning with the temperature of the preceding month. Davis documents a significant temperature variance in September, with the mean nighttime lows settling at a moderate 58.6°F.Heat index
September's heat index is calculated to be a tropical 89.6°F. Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.It is crucial to understand that heat index figures are for shade and gentle wind conditions. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Humidity
September is the least humid month, with an average relative humidity of 45%.Rainfall
In Davis, in September, it is raining for 2.2 days, with typically 0.12" of accumulated precipitation. In Davis, during the entire year, the rain falls for 67.4 days and collects up to 12.17" of precipitation.Daylight
The average length of the day in September is 12h and 25min.On the first day of September in Davis, sunrise is at 6:36 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:51 pm PDT.
Sunshine
In September, the average sunshine in Davis is 11.2h.UV index
The average daily maximum UV index in September in Davis is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Act with care - The need to guard against sun damage is communicated. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
FAQ
How hot is September in Davis?
What is the least humid month in Davis?
What is the average humidity in September in Davis?
How many days does it rain in September in Davis?
How many hours of daylight does Davis have in September?
When are sunrise and sunset in September in Davis?
How many hours of sunshine does Davis have in September?
What is the UV index reading in September in Davis?
Average temperature in September
Davis, CA
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is July (93.6°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is August (59.2°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).
Average pressure in September
Davis, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in September
Davis, CA
- Average wind speed in September: 5.1mph
The windiest months (with the highest average wind speed) are May and June (6.3mph).
The calmest month (with the lowest average wind speed) is November (5mph).
Average humidity in September
Davis, CA
- Average humidity in September: 45%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (45%).
Average rainfall in September
Davis, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is February (2.44").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Davis, CA
- Average rainfall days in September: 2.2 days
The month with the highest number of rainy days is March (12.5 days).
The months with the least rainy days are July and August (0.8 days).
Average daylight in September /
Average sunshine in September
Davis, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Davis, CA
- Average sunshine days in September: 27.6 days
The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is March (17.8 days).
Average UV index in September
Davis, CA
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Davis, CA
- Average cloud cover in September: 9
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in September
Davis, 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).
Davis, California, USA
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