United StatesAverage weather for Billerica in September
It's warm in September in Billerica with an average temperature of 24°C. Temperatures this month range from a low of 19°C to a high of 28°C. At night, you can expect temperatures between 11°C and 18°C.
Start of September
The month of September starts in Billerica with hot temps, averaging around 27°C during the day and nights around 17°C. There are plenty of days with a good chance of precipitation.
With the temperature difference between day and night, it’s smart to wear layers.
Mid September
By mid-September, daytime temps drop to around 24°C, with nights around 14°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of September
By the end of September, the average daytime temperature in Billerica is around 23°C, while nighttime temps are about 13°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
In September, there is an average of 172 mm of precipitation, spread over 8 days. The wind speed is around 4 Bft, mostly coming from the South.
Billerica in September |
New York | ||
|---|---|---|---|
 Average temperature |
24°C | 27°C | |
 Max. temperature |
28°C | 31°C | |
| Min. temperature |
19°C | -5°C | |
 Total precipitation |
172 mm | 57 mm | |
| Rainy days |
8 days | 9 days | |
August
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.
Is September a good time to visit Billerica?
Looking for sun? September isn’t a good month to be in Billerica. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 35°C in 2018, Billerica reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 13°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 0°C to a highest value of 23°C.
Check out the climate of Billerica for all months and discover the best travel time
Daily Temperature in September in Billerica
This chart shows the average daily high and low temperatures in September for Billerica, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Billerica
The chart below shows the average daily precipitation in September for Billerica, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 8 days of precipitation in Billerica.
Daily UV index in September in Billerica
This chart shows the average daily UV index in September in Billerica, 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.
Temperature in September in Billerica over the years
This chart shows the average temperature in September in Billerica, measured in degrees Celsius, over the past few years.
Total precipitation in September in Billerica over the years
This chart shows the average precipitation in September in Billerica, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Billerica
Click on any day in September to get detailed info about the usual weather on that day in Billerica. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Billerica
Have you been to Billerica in September?
Share your weather experience in September in Billerica.
Average weather in Billerica by month
Click on a month below to see detailed weather info for Billerica. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Billerica for all months at once
