| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.71 | 3.56 | 0.15 |
| Feb | 3.32 | 3.27 | 0.05 |
| Mar | 4.23 | 4.24 | -0.01 |
| Apr | 4.31 | 4.24 | 0.07 |
| May | 3.60 | 3.61 | -0.01 |
| Jun | 4.35 | 4.13 | 0.22 |
| Jul | 3.82 | 3.76 | 0.06 |
| Aug | 4.31 | 4.18 | 0.13 |
| Sep | 4.17 | 3.99 | 0.18 |
| Oct | 4.93 | 5.00 | -0.07 |
| Nov | 3.99 | 3.69 | 0.30 |
| Dec | 4.35 | 4.51 | -0.16 |
49.09 | 48.18 | 0.91 |