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
A moderate decline in average high-temperatures is noted in September, moving from a tropical 93.7°F (34.3°C) in August to a still hot 88.2°F (31.2°C). Wallace sees a major change from daytime highs, with the nighttime temperature dipping to a refreshing 58.1°F (14.5°C) on average during September.Heat index
September's mean heat index is computed to be a tropical 89.6°F (32°C). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
In September, the average relative humidity is 43%.Rainfall
In Wallace, California, in September, during 2.1 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. In Wallace, during the entire year, the rain falls for 70.8 days and collects up to 15.91" (404mm) of precipitation.Snowfall
January through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September, sunrise is at 6:34 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:47 pm PDT.
Sunshine
In September, the average sunshine is 11.3h.UV index
In Wallace, California, 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 exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 5 in September leads to these recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The Sun's radiation is especially intense around midday; try to stay in shade during this period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow in Wallace?
How many hours of daylight does Wallace have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Wallace have in September?
What is the UV index intensity in September?
Average temperature in September
Wallace, CA
- Average high temperature in September: 88.2°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 (54.5°F).
- Average low temperature in September: 58.1°F
The months with the highest average low temperature are July and August (59.4°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).
Average pressure in September
Wallace, CA
- Average pressure in September: 29.93"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
Wallace, CA
- Average wind speed in September: 4mph
The windiest month (with the highest average wind speed) is February (5.6mph).
The calmest month (with the lowest average wind speed) is September (4mph).
Average humidity in September
Wallace, CA
- Average humidity in September: 43%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (41%).
Average rainfall in September
Wallace, CA
- Average rainfall in September: 0.16"
The wettest month (with the highest rainfall) is March (2.91").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Wallace, CA
- Average rainfall days in September: 2.1 days
The month with the highest number of rainy days is March (13.2 days).
The month with the least rainy days is August (0.8 days).
Average snowfall days in September
Wallace, 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
Wallace, 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 2min
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 48min).
Average sunshine days in September
Wallace, CA
- Average sunshine days in September: 27.4 days
The month with the most sunshine days is July (29.2 days).
The month with the least sunshine days is March (16.8 days).
Average UV index in September
Wallace, CA
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Wallace, CA
- Average cloud cover in September: 7
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Wallace, 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).
Wallace, California, USA
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