Normal weather in Northamptonshire in September
The weather in Northamptonshire in September has an average temperature of around 20°C during the day. On average, September sees 40 mm of rain in Northamptonshire. The wind speed is 4 Beaufort and mainly comes from Southwest.
After August, September in Northamptonshire starts with a temperature of 20°C and ends around October at 17°C.
September averages for Northamptonshire
 Average temperature | 20°C |
 Highest daytime temperature | 21°C |
| Lowest daytime temperature | 17°C |
 Total rainfall | 40 mm |
| Rainy days | 12 days |
Temperature per day in September in Northamptonshire
This graph shows the average daily maximum temperatures in September in Northamptonshire, indicated in degrees Celsius.
Precipitation per day in September in Northamptonshire
This graph shows the average daily precipitation in September in Northamptonshire, indicated in millimeters.
UV index per day in September in Northamptonshire
This graph shows the average daily UV index in September in Northamptonshire.
Yearly temperature in September in Northamptonshire
This graph shows the average yearly temperature in September in Northamptonshire, measured in degrees Celsius, over the past years.
Yearly total precipitation in September in Northamptonshire
This graph shows the average yearly precipitation in millimeters in September in Northamptonshire, over the past years.
Average daily weather in September
Click on a day to get more information about the average weather on that day.
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Average weather in Northamptonshire per month
Click on a month below to see in detail how the weather typically is in Northamptonshire and what to expect. Based on the historical weather data of Northamptonshire, you can view the average temperature, precipitation, wind, and UV index for each day of the month.