| NW | NC | GL | NE | EC | SE | SC | SRM | SW | AK | HPI | PVI | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NCDC Digitized | 61 | 76 | 72 | 106 | 82 | 125 | 104 | 163 | 93 | 107 | 27 | 6 |
| NCDC Summarized | 173 | 39 | 35 | 87 | 96 | 38 | 104 | 133 | 75 | 152 | 7 | 1 |
| NCDC Unsummarized | 80 | 32 | 75 | 40 | 35 | 5 | 43 | 63 | 38 | 19 | 23 | 8 |
| Forest Service | 63 | 18 | 0 | 0 | 2 | 0 | 0 | 11 | 103 | 24 | 6 | 0 |
| Power Plant Sites | 10 | 7 | 23 | 35 | 4 | 17 | 11 | 11 | 5 | 2 | 0 | 3 |
| Foreign | 34 | 12 | 23 | 48 | 0 | 0 | 3 | 0 | 0 | 16 | 0 | 0 |
| Other | 42 | 28 | 76 | 61 | 5 | 0 | 4 | 18 | 44 | 6 | 33 | 2 |
| All Stations | 463 | 212 | 304 | 377 | 224 | 185 | 269 | 363 | 358 | 326 | 96 | 20 |