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
Pacheco's weather in September displays an average high-temperature of a still moderately hot 81.9°F (27.7°C), showing minor disparity from August's 82.8°F (28.2°C). A marked drop from daytime peak temperatures to an average low-temperature of 57.4°F (14.1°C) is observed during the nights in September.Heat index
In September, the average heat index is appraised at 84.2°F (29°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Humidity
September is the least humid month in Pacheco, with an average relative humidity of 56%.Rainfall
The months with the least rainfall in Pacheco are June through September Rain falls for 1.8 days and accumulates 0.04" (1mm) of rain.Daylight
The average length of the day in September in Pacheco is 12h and 25min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:37 pm. On the last day of September, in Pacheco, sunrise is at 7:03 am and sunset at 6:52 pm PDT.
Sunshine
The average sunshine in September in Pacheco, California, is 11h.UV index
The average daily maximum UV index in September in Pacheco is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: An average UV index of 5 in September transforms into this advice:
Take precautions - Protection against sun damage is advised. When the Sun is at its strongest around midday, find shade and limit exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What are the temperatures in Pacheco in September?
What is the least humid month in Pacheco?
What is the average humidity in September in Pacheco?
What is the driest month in Pacheco?
How many days does it rain in September in Pacheco?
What is the average length of the day in September in Pacheco?
When is the sunrise / sunset in September in Pacheco?
How many hours of sunshine does Pacheco have in September?
What is the UV index intensity in September in Pacheco?
Average temperature in September
Pacheco, CA
- Average high temperature in September: 81.9°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in September: 57.4°F
The month with the highest average low temperature is September (57.4°F).
The coldest month (with the lowest average low temperature) is January (42.3°F).
Average pressure in September
Pacheco, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Pacheco, CA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is May (7.6mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).
Average humidity in September
Pacheco, CA
- Average humidity in September: 56%
The months with the highest relative humidity are January and March (73%).
The month with the lowest relative humidity is September (56%).
Average rainfall in September
Pacheco, CA
- Average rainfall in September: 0.04"
The wettest month (with the highest rainfall) is February (0.87").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days in September
Pacheco, CA
- Average rainfall days in September: 1.8 days
The month with the highest number of rainy days is March (9.8 days).
The month with the least rainy days is August (0.5 days).
Average daylight in September /
Average sunshine in September
Pacheco, 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 36min).
- Average sunshine in September: 11h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Pacheco, CA
- Average sunshine days in September: 27.8 days
The month with the most sunshine days is July (29.5 days).
The month with the least sunshine days is March (20 days).
Average UV index in September
Pacheco, CA
- Average UV index in September: 5
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Pacheco, CA
- Average cloud cover in September: 11
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in September
Pacheco, 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).
Pacheco, California, USA
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