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
September brings an average high-temperature of a still tropical 88.7°F (31.5°C), showing a slight difference from August's 92.8°F (33.8°C). Davis's average nighttime temperatures present a clear contrast to its daytime highs, measured at a mild 58.6°F (14.8°C) in September.Heat index
For September, the heat index is appraised at a hot 89.6°F (32°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
September is the least humid month in Davis, California, with an average relative humidity of 45%.Rainfall
In Davis, in September, during 2.2 rainfall days, 0.12" (3mm) of precipitation is typically accumulated. In Davis, during the entire year, the rain falls for 67.4 days and collects up to 12.17" (309mm) of precipitation.Daylight
In Davis, California, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:37 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:50 pm PDT.
Sunshine
In Davis, the average sunshine in September is 11.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: A typical high UV index of 5 in September suggests the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
How hot is September in Davis?
What is the least humid month in Davis?
What is the average humidity in September in Davis?
How much does it rain in Davis in September?
How many hours of daylight does Davis have in September?
When is the sunrise / sunset in September in Davis?
How long on average sun shines in September in Davis?
How high is the UV index 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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