Rainfall tercile tables for several locations in the West and South of the South 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 rainfall total (mm) range for forecast area WSSI for the 3-month period Sep-Oct-Nov
| Station Name | No. years | Below Normal | Near Normal | Above Normal |
|---|---|---|---|---|
| GREYMOUTH AERO | 30 | 415 - 581 | 581 - 766 | 766 - 896 |
| HOKITIKA AERO | 30 | 538 - 638 | 638 - 809 | 809 - 1133 |
| ARTHURS PASS EWS | 30 | 721 - 1146 | 1146 - 1674 | 1674 - 1996 |
| CRAIGIEBURN FOREST | 30 | 268 - 357 | 357 - 498 | 498 - 662 |
| MT COOK EWS | 30 | 643 - 963 | 963 - 1367 | 1367 - 1755 |
| TARA HILLS AWS | 27 | 58 - 113 | 113 - 158 | 158 - 200 |
| MILFORD SOUND | 30 | 909 - 1620 | 1620 - 1975 | 1975 - 2756 |
| WANAKA AERO AWS | 30 | 81 - 145 | 145 - 216 | 216 - 374 |
| QUEENSTOWN AERO AWS | 30 | 80 - 155 | 155 - 260 | 260 - 384 |
| CROMWELL EWS | 30 | 55 - 80 | 80 - 111 | 111 - 200 |
| QUEENSTOWN | 30 | 83 - 183 | 183 - 287 | 287 - 425 |
| CLYDE DAM | 23 | 71 - 95 | 95 - 126 | 126 - 197 |
| ETTRICK NO.2 | 29 | 80 - 122 | 122 - 145 | 145 - 237 |
| GORE AWS | 30 | 134 - 194 | 194 - 246 | 246 - 295 |
| WINTON | 29 | 122 - 207 | 207 - 256 | 256 - 308 |
| INVERCARGILL AERO | 30 | 114 - 243 | 243 - 298 | 298 - 352 |
| TIWAI POINT EWS | 29 | 130 - 239 | 239 - 300 | 300 - 393 |