Temperature tercile tables for several locations in the South and West of the North Island. Data are based on the 30-year period 1971-2000. The ranges for each tercile are: below normal = second lowest to 33rd percentile; near normal = 34th to 66th percentile; above normal = 67th percentile to second highest.
Historical average temperature (deg C) range for forecast area SWNI for the 3-month period Aug-Sep-Oct
| Station Name | No. years | Below Normal | Near Normal | Above Normal |
|---|---|---|---|---|
| TAUMARUNUI | 29 | 9.6 - 10.3 | 10.4 - 10.8 | 10.9 - 11.5 |
| TAUMARUNUI AWS | 29 | 9.6 - 10.3 | 10.4 - 10.8 | 10.9 - 11.5 |
| TURANGI 2 EWS | 28 | 8.1 - 9.1 | 9.2 - 9.5 | 9.6 - 9.9 |
| NEW PLYMOUTH AWS | 30 | 10.6 - 11.2 | 11.3 - 11.6 | 11.7 - 12.3 |
| LOWER RETARUKE | 29 | 9.2 - 9.7 | 9.8 - 10.3 | 10.4 - 10.8 |
| STRATFORD DEM FARM | 24 | 8.5 - 9.2 | 9.3 - 9.8 | 9.9 - 10.3 |
| WAIOURU AWS | 28 | 5.4 - 6.3 | 6.4 - 6.9 | 7.0 - 7.5 |
| WANGANUI,SPRIGGENS PARK EWS | 30 | 10.8 - 11.3 | 11.4 - 11.8 | 11.9 - 12.4 |
| PALMERSTON N | 30 | 10.1 - 10.7 | 10.8 - 11.2 | 11.3 - 12.0 |
| LEVIN AWS | 29 | 10.0 - 10.7 | 10.8 - 11.1 | 11.2 - 11.6 |
| PARAPARAUMU AERO | 30 | 9.8 - 10.4 | 10.5 - 11.1 | 11.2 - 11.7 |
| WALLACEVILLE EWS | 27 | 9.1 - 9.7 | 9.8 - 10.5 | 10.6 - 11.1 |
| WAIORONGOMAI | 21 | 9.5 - 9.9 | 10.0 - 10.7 | 10.8 - 11.2 |
| WELLINGTON,KELBURN | 30 | 9.4 - 10.3 | 10.4 - 10.9 | 11.0 - 11.5 |
| WELLINGTON AERO | 28 | 10.2 - 11.0 | 11.1 - 11.8 | 11.9 - 12.4 |