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
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a sweltering 97°F (36.1°C) to a hot 90.7°F (32.6°C). September nights in Butte City present a sharp contrast to daytime highs, with average temperatures of 61°F (16.1°C).Humidity
The least humid month in Butte City is September, with an average relative humidity of 36%.Rainfall
In Butte City, during September, the rain falls for 1.7 days and regularly aggregates up to 0.08" (2mm) of precipitation. Throughout the year, in Butte City, there are 58.9 rainfall days, and 6.89" (175mm) of precipitation is accumulated.Daylight
In September, the average length of the day in Butte City is 12h and 26min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:38 pm. On the last day of September, in Butte City, California, sunrise is at 7:03 am and sunset at 6:51 pm PDT.
Sunshine
In September, the average sunshine is 11.2h.UV index
In Butte City, California, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 6 in September leads to these guidelines:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
How hot does it get in Butte City in September?
What is the least humid month in Butte City?
What is the average humidity in September in Butte City?
How many days does it rain in September in Butte City?
What is the average length of the day in September in Butte City?
When is the sunrise / sunset in September in Butte City?
How many hours of sunshine does Butte City have in September?
What is the UV index intensity in September in Butte City?
Average temperature in September
Butte City, CA
- Average high temperature in September: 90.7°F
The warmest month (with the highest average high temperature) is July (98.8°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in September: 61°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is December (42.1°F).
Average pressure in September
Butte City, CA
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Butte City, CA
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is March (6.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Butte City, CA
- Average humidity in September: 36%
The month with the highest relative humidity is March (71%).
The month with the lowest relative humidity is September (36%).
Average rainfall in September
Butte City, CA
- Average rainfall in September: 0.08"
The wettest months (with the highest rainfall) are February and December (1.3").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Butte City, CA
- Average rainfall days in September: 1.7 days
The month with the highest number of rainy days is March (10.4 days).
The month with the least rainy days is July (1 days).
Average daylight in September /
Average sunshine in September
Butte City, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- 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 48min).
Average sunshine days in September
Butte City, CA
- Average sunshine days in September: 28 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (19.7 days).
Average UV index in September
Butte City, CA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in September
Butte City, CA
- Average cloud cover in September: 8
The months with the most cloud cover are March and December (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Butte City, 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).
Butte City, California, USA
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