Porsgrunn (Ås) observation station
September 2021
Summary
Temperature
September 2021
The temperature varied from 7.0° to 25.5°
Name Value Highest (2 Sep.) Temperature25.5°Lowest (26 Sep.) Temperature7.0°Average Temperature13.4° Normal Temperature12.2° Deviance Temperature1.2° Precipitation
September 2021
The wettest day measured 49.1mm on 28 Sep.
Name Value Total Precipitation 97.9mmNormal Precipitation 104.0mmWettest day (28 Sep.) Precipitation 49.1mmDays with precipitation 8 Wind
September 2021
Strongest gust was 14.7m/s on 28 Sep.
Name Value Highest wind speed (27 Sep.) 6.9m/sStrongest gust (28 Sep.) 14.7m/s
| Date | Min. temp. | Max temp. | Average | Normal temp. | Precip. mm (measured at 07) | Snow depth cm | Wind speed m/s | Highest wind speed m/s |
|---|---|---|---|---|---|---|---|---|
| 1. | 12.3° | 22.1° | 16.3° | 14.4° | 0.0 | – | 1.8 | 3.4 |
| 2. | 10.8° | 25.5° | 17.9° | 14.3° | 0.0 | – | 2.0 | 3.8 |
| 3. | 13.6° | 23.1° | 16.0° | 14.1° | 0.0 | – | 2.0 | 3.0 |
| 4. | 10.4° | 15.7° | 11.6° | 14.0° | 0.7 | – | 1.3 | 2.3 |
| 5. | 9.1° | 19.6° | 14.4° | 13.9° | 0.1 | – | 1.5 | 4.1 |
| 6. | 10.4° | 20.2° | 14.3° | 13.7° | 0.0 | – | 1.1 | 2.0 |
| 7. | 10.2° | 22.6° | 16.2° | 13.6° | 0.0 | – | 1.8 | 3.5 |
| 8. | 13.0° | 25.2° | – | 13.4° | 0.0 | – | 1.6 | 4.1 |
| 9. | 11.8° | 23.4° | 16.8° | 13.3° | 0.1 | – | 2.1 | 3.6 |
| 10. | 13.5° | 21.2° | 16.8° | 13.1° | 0.1 | – | 1.6 | 3.0 |
| 11. | 14.6° | 17.7° | 16.2° | 13.0° | 0.2 | – | 1.2 | 2.2 |
| 12. | 13.3° | 23.9° | 16.6° | 12.8° | 1.2 | – | 1.4 | 3.2 |
| 13. | 10.4° | 17.8° | 13.0° | 12.7° | 2.6 | – | 1.6 | 3.1 |
| 14. | 7.5° | 17.9° | 12.3° | 12.5° | 0.0 | – | 1.6 | 3.7 |
| 15. | 9.1° | 16.0° | 13.1° | 12.4° | 0.0 | – | 2.1 | 3.5 |
| 16. | 10.3° | 14.8° | 10.9° | 12.2° | 7.9 | – | 2.7 | 3.7 |
| 17. | 8.8° | 13.6° | 10.5° | 12.0° | 0.8 | – | 3.0 | 3.9 |
| 18. | 8.9° | 12.3° | 10.5° | 11.9° | 0.0 | – | 1.7 | 2.3 |
| 19. | 9.3° | 11.6° | 10.1° | 11.7° | 0.0 | – | 1.6 | 2.7 |
| 20. | 7.3° | 11.4° | 9.4° | 11.5° | 0.0 | – | 1.4 | 3.0 |
| 21. | 8.7° | 14.1° | 11.4° | 11.3° | 3.2 | – | 1.4 | 3.0 |
| 22. | 7.4° | 20.1° | 13.6° | 11.2° | 0.0 | – | 1.5 | 2.6 |
| 23. | 9.9° | 15.9° | 11.8° | 11.0° | 2.5 | – | 2.8 | 6.3 |
| 24. | 9.0° | 16.4° | 11.9° | 10.8° | 2.8 | – | 2.2 | 4.8 |
| 25. | 7.7° | 18.0° | 12.5° | 10.6° | 0.2 | – | 1.9 | 3.9 |
| 26. | 7.0° | 15.9° | 11.3° | 10.5° | 0.0 | – | 1.7 | 3.9 |
| 27. | 10.8° | 14.6° | 13.0° | 10.3° | 0.2 | – | 4.3 | 6.9 |
| 28. | 10.6° | 17.6° | 13.4° | 10.1° | 49.1 | – | 1.7 | 5.6 |
| 29. | 10.4° | 12.9° | 11.7° | 9.9° | 0.1 | – | 2.3 | 4.7 |
| 30. | 8.8° | 12.7° | 10.8° | 9.8° | 26.1 | – | 2.4 | 5.0 |