Blackburn
September
Weather in Blackburn for September 2025
Your guide to Blackburn weather in September - trends and predictions
In general, the average temperature in Blackburn at the beginning of September is 20.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13.4 °C by the end of September.
Expect significant rainfall in Blackburn during September, with an average of 18 rainy days.
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12
Dry days
18
Rainy days
0
Snow days
18°/11°
Temperatures
22 km/h
Avg max wind
83 %
Avg humidity
Blackburn in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  16° | 2  20° | 3  18° | 4  19° | 5  20° | 6  24° | 7 24° |
| 8 22° | 9 19° | 10  18° | 11 14° | 12 14° | 13  14° | 14 16° |
| 15 16° | 16 15° | 17 19° | 18 17° | 19 17° | 20 18° | 21 17° |
| 22 16° | 23 13° | 24 15° | 25 14° | 26 14° | 27  13° | 28 13° |
| 29 13° | 30 12° |
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Temperatures trend during September in Blackburn
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light drizzle | 16° /11° | 3.3 mm | 4 | |
| 2 Sept. | Light rain shower | 20° /12° | 5.3 mm | 5 | |
| 3 Sept. | Mist | 18° /11° | 0.2 mm | 5 | |
| 4 Sept. | Sunny | 19° /10° | 0.7 mm | 5 | |
| 5 Sept. | Partly cloudy | 20° /11° | 0.2 mm | 5 | |
| 6 Sept. | Overcast | 24° /13° | 0 mm | 6 | |
| 7 Sept. | Patchy rain possible | 24° /15° | 1.3 mm | 6 | |
| 8 Sept. | Partly cloudy | 22° /14° | 1.5 mm | 6 | |
| 9 Sept. | Partly cloudy | 19° /13° | 0.4 mm | 5 | |
| 10 Sept. | Moderate or heavy rain shower | 18° /11° | 9 mm | 4 | |
| 11 Sept. | Light rain shower | 14° /9° | 7 mm | 4 | |
| 12 Sept. | Mist | 14° /7° | 0.6 mm | 4 | |
| 13 Sept. | Cloudy | 14° /5° | 0.1 mm | 4 | |
| 14 Sept. | Overcast | 16° /8° | 0 mm | 4 | |
| 15 Sept. | Fog | 16° /10° | 0.4 mm | 4 | |
| 16 Sept. | Overcast | 15° /9° | 0.1 mm | 4 | |
| 17 Sept. | Light rain | 19° /10° | 4.1 mm | 5 | |
| 18 Sept. | Light rain shower | 17° /8° | 4 mm | 5 | |
| 19 Sept. | Moderate or heavy rain shower | 17° /8° | 10 mm | 5 | |
| 20 Sept. | Light rain shower | 18° /9° | 3.3 mm | 4 | |
| 21 Sept. | Light rain shower | 17° /9° | 1.2 mm | 4 | |
| 22 Sept. | Light rain shower | 16° /10° | 2.1 mm | 4 | |
| 23 Sept. | Patchy rain possible | 13° /9° | 3 mm | 3 | |
| 24 Sept. | Light rain | 15° /9° | 6.7 mm | 4 | |
| 25 Sept. | Patchy rain possible | 14° /8° | 0.5 mm | 4 | |
| 26 Sept. | Light rain shower | 14° /9° | 14 mm | 4 | |
| 27 Sept. | Moderate rain | 13° /7° | 3 mm | 4 | |
| 28 Sept. | Light rain shower | 13° /7° | 1.7 mm | 4 | |
| 29 Sept. | Patchy rain possible | 13° /7° | 1.2 mm | 3 | |
| 30 Sept. | Light rain | 12° /9° | 12.8 mm | 3 | |
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Important Notice
Our weather forecast for Blackburn 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 Blackburn forecast closer to your planned date for the most up-to-date weather information.
Blackburn in September - FAQ
What are the expected maximum and minimum temperatures in Blackburn during September?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Blackburn during September?
Significant rainfall exceeding 101.5 mm is expected in Blackburn during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Blackburn during September?
The average wind speed in Blackburn during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
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