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 snowfall 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
Lathrop's September average high-temperature settles at a still hot 88.7°F (31.5°C), showing a near match with the preceding month. Lathrop reports a substantial plunge from daytime highs during the nights of September, with an average low-temperature of 58.3°F (14.6°C).Heat index
September's mean heat index is calculated to be a hot 89.6°F (32°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.Metrics for the heat index primarily focus on shaded spots and light wind conditions. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. 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 of high significance for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Humidity
In September, the average relative humidity is 45%.Rainfall
In Lathrop, California, in September, it is raining for 2.1 days, with typically 0.12" (3mm) of accumulated precipitation. Throughout the year, there are 67.8 rainfall days, and 11.22" (285mm) of precipitation is accumulated.Snowfall
In Lathrop, snow does not fall in January through November.Daylight
In September, the average length of the day in Lathrop is 12h and 25min.On the first day of September, sunrise is at 6:35 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:49 pm PDT.
Sunshine
In Lathrop, the average sunshine in September is 11.5h.UV index
In Lathrop, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 5 in September translates into this advice:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
Is it hot in Lathrop during September?
What is the average humidity in September in Lathrop?
How many days does it rain in September in Lathrop?
When it does not snow in Lathrop?
What is the average length of the day in September in Lathrop?
What time are sunrise and sunset in September in Lathrop?
How many hours of sunshine does Lathrop have in September?
What is the UV index reading in September in Lathrop?
Average temperature in September
Lathrop, CA
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is December (54.9°F).
- Average low temperature in September: 58.3°F
The month with the highest average low temperature is August (59.9°F).
The coldest month (with the lowest average low temperature) is December (40.6°F).
Average pressure in September
Lathrop, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Lathrop, CA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is June (6.8mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in September
Lathrop, CA
- Average humidity in September: 45%
The month with the highest relative humidity is January (73%).
The month with the lowest relative humidity is July (42%).
Average rainfall in September
Lathrop, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is March (2.01").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in September
Lathrop, CA
- Average rainfall days in September: 2.1 days
The month with the highest number of rainy days is March (12 days).
The month with the least rainy days is August (1.2 days).
Average snowfall days in September
Lathrop, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Lathrop, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 11h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Lathrop, CA
- Average sunshine days in September: 26.9 days
The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is March (17.5 days).
Average UV index in September
Lathrop, 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
Lathrop, CA
- Average cloud cover in September: 7
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Lathrop, 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).
Lathrop, California, USA
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