Northampton
September
Weather in Northampton for September 2025
Your guide to Northampton weather in September - trends and predictions
In general, the average temperature in Northampton at the beginning of September is 23.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.3 °C by the end of September.
The climate of Northampton in September is notably wet, with an average of 11 rainy days.
- New! Chat with our AI weatherman - it’s amazing and free.
19
Dry days
11
Rainy days
0
Snow days
21°/12°
Temperatures
21 km/h
Avg max wind
74 %
Avg humidity
Northampton in September average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  21° | 2 23° | 3  21° | 4  21° | 5 22° | 6 28° | 7  26° |
| 8 24° | 9 23° | 10 23° | 11  18° | 12 15° | 13 16° | 14 16° |
| 15 21° | 16 20° | 17 20° | 18  19° | 19 20° | 20 19° | 21 20° |
| 22 17° | 23 17° | 24 17° | 25 17° | 26 19° | 27 15° | 28 15° |
| 29 15° | 30 16° |
You can click on date
Access Northampton weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during September in Northampton
See the weather trend as well as the moving average line
September weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Mist | 21° /12° | 2.5 mm | 5 | |
| 2 Sept. | Fog | 23° /13° | 0.1 mm | 5 | |
| 3 Sept. | Overcast | 21° /12° | 0.1 mm | 5 | |
| 4 Sept. | Sunny | 21° /13° | 2.2 mm | 6 | |
| 5 Sept. | Sunny | 22° /12° | 4.5 mm | 6 | |
| 6 Sept. | Sunny | 28° /15° | 1.9 mm | 7 | |
| 7 Sept. | Partly cloudy | 26° /15° | 0.3 mm | 7 | |
| 8 Sept. | Partly cloudy | 24° /16° | 7 mm | 6 | |
| 9 Sept. | Sunny | 23° /14° | 0 mm | 6 | |
| 10 Sept. | Partly cloudy | 23° /13° | 1 mm | 6 | |
| 11 Sept. | Patchy rain possible | 18° /11° | 2.2 mm | 4 | |
| 12 Sept. | Overcast | 15° /9° | 0.3 mm | 4 | |
| 13 Sept. | Overcast | 16° /6° | 0 mm | 4 | |
| 14 Sept. | Overcast | 16° /9° | 0 mm | 5 | |
| 15 Sept. | Partly cloudy | 21° /10° | 0.1 mm | 5 | |
| 16 Sept. | Overcast | 20° /10° | 0 mm | 5 | |
| 17 Sept. | Light rain shower | 20° /10° | 1.2 mm | 5 | |
| 18 Sept. | Light rain | 19° /11° | 0.6 mm | 5 | |
| 19 Sept. | Light rain | 20° /11° | 0.6 mm | 5 | |
| 20 Sept. | Light rain shower | 19° /11° | 5.8 mm | 5 | |
| 21 Sept. | Patchy light drizzle | 20° /10° | 5.1 mm | 5 | |
| 22 Sept. | Patchy rain possible | 17° /10° | 9.5 mm | 4 | |
| 23 Sept. | Patchy rain possible | 17° /11° | 3.9 mm | 4 | |
| 24 Sept. | Patchy rain possible | 17° /11° | 1.2 mm | 4 | |
| 25 Sept. | Overcast | 17° /11° | 3.7 mm | 4 | |
| 26 Sept. | Patchy light drizzle | 19° /10° | 3.3 mm | 5 | |
| 27 Sept. | Patchy rain possible | 15° /7° | 2.8 mm | 4 | |
| 28 Sept. | Overcast | 15° /8° | 0.4 mm | 4 | |
| 29 Sept. | Overcast | 15° /8° | 9.2 mm | 4 | |
| 30 Sept. | Patchy rain possible | 16° /9° | 9.7 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Northampton in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Northampton forecast closer to your planned date for the most up-to-date weather information.
Northampton in September - FAQ
What are the expected maximum and minimum temperatures in Northampton during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Northampton during September?
In September, Northampton can expect light to moderate rainfall, totaling 37.3 mm across approximately 11 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Northampton during September?
The average wind speed in Northampton during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
Quick links
You are here
Where is Northampton?Get accurate weather forecasts for Northampton, located at latitude 52.25 and longitude -0.883. Stay updated with localized weather information tailored for Northampton.
Found a mistake?
We appreciate your attention to details. Tell us here.