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
September
Weather in September
Temperature
Davis's September reports an average high-temperature of a still tropical 88.7°F (31.5°C), exhibiting a minor difference from August. Despite a noticeable differential from daytime highs, Davis notes an average nighttime low-temperature of 58.6°F (14.8°C) in September.Heat index
The average heat index in September is evaluated at a hot 89.6°F (32°C). Enduring exposure and continuous activity might cause a feeling of tiredness and induce heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is found by incorporating humidity levels into the air temperature measurement. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
The least humid month is September, 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, 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
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 5 during September leads to these advisories:
Prioritize safety - Recommendations to avert sunburn are shared. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the least humid month?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Davis have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Davis have in September?
How high is the UV index in September?
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).