| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.87 | 3.93 | -0.06 |
| Feb | 3.60 | 3.66 | -0.06 |
| Mar | 4.17 | 4.16 | 0.01 |
| Apr | 3.15 | 3.18 | -0.03 |
| May | 3.25 | 3.18 | 0.07 |
| Jun | 4.24 | 4.24 | 0.00 |
| Jul | 3.94 | 3.93 | 0.01 |
| Aug | 4.12 | 4.42 | -0.30 |
| Sep | 3.76 | 3.97 | -0.21 |
| Oct | 3.24 | 3.36 | -0.12 |
| Nov | 3.34 | 3.40 | -0.06 |
| Dec | 4.18 | 4.15 | 0.03 |
44.86 | 45.58 | -0.72 |