September weather forecastLoomis, CA
September
Weather in September
September, the first month of the autumn in Loomis, is still a tropical month, with an average temperature varying between 58.1°F (14.5°C) and 86.9°F (30.5°C).Temperature
Loomis experiences an average high-temperature of a still tropical 86.9°F (30.5°C) in September, marking an insignificant shift from 92.1°F (33.4°C) in August. A steady average of 58.1°F (14.5°C) throughout September underscores a considerable divergence from the daytime high.Heat index
September's average heat index is computed to be a hot 86°F (30°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. 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 41%.Rainfall
In Loomis, in September, during 2.6 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In Loomis, during the entire year, the rain falls for 81.2 days and collects up to 22.64" (575mm) of precipitation.Snowfall
In Loomis, snow does not fall in January, March through November.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:34 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:48 pm PDT.
Sunshine
In September, the average sunshine is 11.3h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Loomis, CA
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (93°F).
The month with the lowest average high temperature is December (54°F).
- Average low temperature in September: 58.1°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is December (39.6°F).
Average pressure in September
Loomis, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Loomis, CA
- Average wind speed in September: 4mph
The windiest month (with the highest average wind speed) is February (5.5mph).
The calmest months (with the lowest average wind speed) are August and September (4mph).
Average humidity in September
Loomis, CA
- Average humidity in September: 41%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (40%).
Average rainfall in September
Loomis, CA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is March (4.33").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Loomis, CA
- Average rainfall days in September: 2.6 days
The month with the highest number of rainy days is March (14.6 days).
The month with the least rainy days is July (1 days).
Average snowfall in September
Loomis, CA
- Average snowfall in September: 0"
The months with the highest snowfall are February and December (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Loomis, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Loomis, CA
- Average daylight in September: 12h and 24min
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 18min
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
Loomis, CA
- Average sunshine days in September: 26.6 days
The month with the most sunshine days is July (29.2 days).
The month with the least sunshine days is March (15.7 days).
Average UV index in September
Loomis, 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
Loomis, CA
- Average cloud cover in September: 8
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Loomis, 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).
