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United StatesThe weather in September in Lassen Volcanic National Park
It's hot in September in Lassen Volcanic National Park with an average temperature of 33°C. Temperatures this month range from a low of 28°C to a high of 39°C. At night, you can expect temperatures between 13°C and 21°C.
September is a good month to be in Lassen Volcanic National Park for sunny weather. You’ll have high temperatures and not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Lassen Volcanic National Park, California. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 45°C in 2017, Lassen Volcanic National Park reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 15°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 4°C to a highest value of 27°C.
Rainfall amount
In September, there is an average of 27 mm of precipitation, spread over 4 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
Daily weather in September for Lassen Volcanic National Park
Click on any day in September to get detailed info about the usual weather on that day in Lassen Volcanic National Park. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Lassen Volcanic National Park | New York | |
|---|---|---|
| Average temperature | 33°C | 27°C |
| Max. temperature | 39°C | 31°C |
| Min. temperature | 13°C | -5°C |
| Total precipitation | 27 mm | 57 mm |
| Rainy days | 4 days | 9 days |
Start of September
The month of September starts in Lassen Volcanic National Park with hot temps, averaging around 37°C during the day and nights around 20°C.
Mid September
By mid-September, daytime temps drop to around 32°C, with nights around 17°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of September
By the end of September, the average daytime temperature in Lassen Volcanic National Park is around 31°C, while nighttime temps are about 15°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Temperature charts
These charts show the average temperatures in September in Lassen Volcanic National Park, California. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Lassen Volcanic National Park
Temperature in September in Lassen Volcanic National Park over the years
Precipitation charts
These charts show the average amount of precipitation in September in Lassen Volcanic National Park, California. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Lassen Volcanic National Park
Total precipitation in September in Lassen Volcanic National Park over the years
Daily UV index in September in Lassen Volcanic National Park
This chart shows the average daily UV index in September in Lassen Volcanic National Park, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Lassen Volcanic National Park
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Average weather in Lassen Volcanic National Park by month
Click on a month below to see detailed weather info for Lassen Volcanic National Park. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.