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United StatesThe weather in September in Bellingham
It's warm in September in Bellingham with an average temperature of 24°C. Temperatures this month range from a low of 17°C to a high of 27°C. At night, you can expect temperatures between 11°C and 19°C.
Looking for sun? September isn’t a good month to be in Bellingham. The temperature is nice, but there’s too much chance of 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 Bellingham, Massachusetts. 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 34°C in 2015, Bellingham reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 13°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 1°C to a highest value of 23°C.
Rainfall amount
In September, there is an average of 242 mm of precipitation, spread over 19 days. The wind speed is around 3 Bft, mostly coming from the South.
Daily weather in September for Bellingham
Click on any day in September to get detailed info about the usual weather on that day in Bellingham. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Bellingham | New York | |
|---|---|---|
| Average temperature | 24°C | 27°C |
| Max. temperature | 27°C | 31°C |
| Min. temperature | 11°C | -5°C |
| Total precipitation | 242 mm | 57 mm |
| Rainy days | 19 days | 9 days |
Start of September
The month of September starts in Bellingham with warm temps, averaging around 25°C during the day and nights around 15°C.
Mid September
By mid-September, daytime temps stay steady at around 25°C, with nights around 15°C. There’s a high chance of precipitation during this time.
End of September
By the end of September, the average daytime temperature in Bellingham is around 23°C, while nighttime temps are about 14°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Bellingham for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Bellingham, Massachusetts. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Bellingham
Temperature in September in Bellingham over the years
Precipitation charts
These charts show the average amount of precipitation in September in Bellingham, Massachusetts. 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 Bellingham
Total precipitation in September in Bellingham over the years
Daily UV index in September in Bellingham
This chart shows the average daily UV index in September in Bellingham, 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 Bellingham
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Average weather in Bellingham by month
Click on a month below to see detailed weather info for Bellingham. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.