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
Klamath observes a minor difference in average high-temperatures between August's 68°F (20°C) and September's 66.7°F (19.3°C). Klamath's nighttime temperature in September drops to an average of 53.4°F (11.9°C).Humidity
With an average relative humidity of 76%, September is the least humid month in Klamath.Rainfall
In Klamath, in September, during 5.5 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, there are 131.4 rainfall days, and 45.67" (1160mm) of precipitation is accumulated.Snowfall
Months with snowfall are February and September. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 0.4 snowfall days, and 0.47" (12mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:43 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:58 pm PDT.
Sunshine
In September, the average sunshine is 10.2h.UV index
In Klamath, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 4 in September leads to these guidelines:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the least humid month?
What is the average humidity in September?
How many days does it rain in September?
When does it start to snow?
How many hours of daylight does Klamath have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Klamath have in September?
What is the UV index reading in September in Klamath?
Average temperature in September
Klamath, CA
- Average high temperature in September: 66.7°F
The warmest month (with the highest average high temperature) is August (68°F).
The month with the lowest average high temperature is December (51.3°F).
- Average low temperature in September: 53.4°F
The months with the highest average low temperature are July and August (54.1°F).
The coldest month (with the lowest average low temperature) is February (43.2°F).
Average pressure in September
Klamath, CA
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in September
Klamath, CA
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is June (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).
Average humidity in September
Klamath, CA
- Average humidity in September: 76%
The month with the highest relative humidity is March (81%).
The month with the lowest relative humidity is September (76%).
Average rainfall in September
Klamath, CA
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is December (8.15").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in September
Klamath, CA
- Average rainfall days in September: 5.5 days
The month with the highest number of rainy days is March (18.7 days).
The month with the least rainy days is July (2.4 days).
Average snowfall in September
Klamath, CA
- Average snowfall in September: 0.04"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are January, March, April, May, June, July, August, October, November and December (0").
Average snowfall days in September
Klamath, CA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, October and November (0 days).
Average daylight in September /
Average sunshine in September
Klamath, CA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 10h and 1min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Klamath, CA
- Average sunshine days in September: 24 days
The month with the most sunshine days is July (27.8 days).
The month with the least sunshine days is March (10.8 days).
Average UV index in September
Klamath, CA
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 5).
The month with the lowest UV index is February (UV index 2).
Average cloud cover in September
Klamath, CA
- Average cloud cover in September: 17
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in September
Klamath, 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).
Klamath, California, USA
Weather forecast for your location
2. Allow the app to use your location