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 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
September heralds a minor drop in average high-temperature, sliding from August's tropical 94.6°F (34.8°C) to a still hot 88°F (31.1°C). September presents a sharp fall from Red Bluff's daytime highs to an average low-temperature of 60.6°F (15.9°C).Humidity
In Red Bluff, the average relative humidity in September is 34%.Rainfall
In Red Bluff, in September, during 3.3 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In Red Bluff, during the entire year, the rain falls for 86.1 days and collects up to 18.39" (467mm) of precipitation.Snowfall
January, March through November are months without snowfall in Red Bluff, California.Daylight
In Red Bluff, California, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:39 pm. On the last day of September, in Red Bluff, California, sunrise is at 7:05 am and sunset at 6:52 pm PDT.
Sunshine
The average sunshine in September is 11.1h.UV index
In Red Bluff, California, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 5 in September translates into this advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
How hot does it get in Red Bluff in September?
What is the average humidity in September in Red Bluff?
How much does it rain in Red Bluff in September?
When it does not snow in Red Bluff?
How many hours of daylight does Red Bluff have in September?
When is the sunrise / sunset in September in Red Bluff?
How long on average sun shines in September in Red Bluff?
How high is the UV index in September in Red Bluff?
Average temperature in September
Red Bluff, CA
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is July (95.9°F).
The month with the lowest average high temperature is December (52.7°F).
- Average low temperature in September: 60.6°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is December (39.6°F).
Average pressure in September
Red Bluff, CA
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, July and August (29.91"Hg).
Average wind speed in September
Red Bluff, CA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is March (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Red Bluff, CA
- Average humidity in September: 34%
The month with the highest relative humidity is March (71%).
The months with the lowest relative humidity are July and August (31%).
Average rainfall in September
Red Bluff, CA
- Average rainfall in September: 0.24"
The wettest months (with the highest rainfall) are March and December (3.27").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in September
Red Bluff, CA
- Average rainfall days in September: 3.3 days
The month with the highest number of rainy days is March (14 days).
The month with the least rainy days is August (1.1 days).
Average snowfall in September
Red Bluff, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.12").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Red Bluff, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 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
Red Bluff, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
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 months with the least sunshine are January and December (Average sunshine: 5h and 48min).
Average sunshine days in September
Red Bluff, CA
- Average sunshine days in September: 26 days
The month with the most sunshine days is August (28.4 days).
The month with the least sunshine days is March (15.3 days).
Average UV index in September
Red Bluff, 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
Red Bluff, CA
- Average cloud cover in September: 8
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
Red Bluff, 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).
Red Bluff, California, USA
Weather forecast for your location
2. Allow the app to use your location
