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 Oct-Nov-Dec
| Station Name | No. years | Below Normal | Near Normal | Above Normal |
|---|---|---|---|---|
| GREYMOUTH AERO | 30 | 486 - 639 | 639 - 767 | 767 - 918 |
| HOKITIKA AERO | 30 | 573 - 690 | 690 - 898 | 898 - 1044 |
| ARTHURS PASS EWS | 30 | 884 - 1218 | 1218 - 1676 | 1676 - 2067 |
| CRAIGIEBURN FOREST | 30 | 294 - 353 | 353 - 474 | 474 - 614 |
| MT COOK EWS | 30 | 705 - 1046 | 1046 - 1586 | 1586 - 2162 |
| TARA HILLS AWS | 26 | 80 - 118 | 118 - 155 | 155 - 253 |
| MILFORD SOUND | 30 | 1107 - 1589 | 1589 - 2034 | 2034 - 2877 |
| WANAKA AERO AWS | 30 | 112 - 159 | 159 - 216 | 216 - 393 |
| QUEENSTOWN AERO AWS | 30 | 132 - 174 | 174 - 266 | 266 - 379 |
| CROMWELL EWS | 30 | 74 - 92 | 92 - 125 | 125 - 205 |
| QUEENSTOWN | 30 | 143 - 185 | 185 - 275 | 275 - 399 |
| CLYDE DAM | 23 | 99 - 113 | 113 - 145 | 145 - 207 |
| ETTRICK NO.2 | 29 | 99 - 134 | 134 - 194 | 194 - 256 |
| GORE AWS | 30 | 187 - 227 | 227 - 266 | 266 - 329 |
| WINTON | 29 | 184 - 223 | 223 - 265 | 265 - 357 |
| INVERCARGILL AERO | 30 | 173 - 257 | 257 - 306 | 306 - 395 |
| TIWAI POINT EWS | 29 | 177 - 248 | 248 - 295 | 295 - 357 |