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United StatesThe weather in September in Lake Arrowhead
It's warm in September in Lake Arrowhead with an average temperature of 28°C. Temperatures this month range from a low of 25°C to a high of 32°C. At night, you can expect temperatures between 9°C and 15°C.
Looking for great weather? September is a good time to be in Lake Arrowhead. The temperatures are nice, and there’s 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 Lake Arrowhead, 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 47°C in 2020, Lake Arrowhead reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 15°C in 2023. The extreme nighttime temperatures ranged from a lowest recorded value of 4°C to a highest value of 20°C.
Rainfall amount
According to weather history, there is only 5,2 mm of precipitation in September. The wind speed is around 3 Bft, mostly coming from the West.
Daily weather in September for Lake Arrowhead
Click on any day in September to get detailed info about the usual weather on that day in Lake Arrowhead. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Lake Arrowhead | New York | |
|---|---|---|
| Average temperature | 28°C | 27°C |
| Max. temperature | 32°C | 31°C |
| Min. temperature | 9°C | -5°C |
| Total precipitation | 5,2 mm | 57 mm |
| Rainy days | 1 day | 9 days |
Start of September
The month of September starts in Lake Arrowhead with hot temps, averaging around 30°C during the day and nights around 14°C.
Mid September
By mid-September, daytime temps drop to around 28°C, with nights around 12°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 Lake Arrowhead is around 27°C, while nighttime temps are about 11°C. No precipitation expected at the end of the month; it’ll be mostly sunny.
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UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Lake Arrowhead for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Lake Arrowhead, California. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Lake Arrowhead
Temperature in September in Lake Arrowhead over the years
Precipitation charts
These charts show the average amount of precipitation in September in Lake Arrowhead, 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 Lake Arrowhead
Total precipitation in September in Lake Arrowhead over the years
Daily UV index in September in Lake Arrowhead
This chart shows the average daily UV index in September in Lake Arrowhead, 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 Lake Arrowhead
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Average weather in Lake Arrowhead by month
Click on a month below to see detailed weather info for Lake Arrowhead. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.