| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.40 | 3.60 | -0.20 |
| Feb | 2.78 | 2.89 | -0.11 |
| Mar | 4.30 | 4.43 | -0.13 |
| Apr | 3.62 | 3.58 | 0.04 |
| May | 3.40 | 3.61 | -0.21 |
| Jun | 4.11 | 4.27 | -0.16 |
| Jul | 4.63 | 4.52 | 0.11 |
| Aug | 4.53 | 4.78 | -0.25 |
| Sep | 4.26 | 4.17 | 0.09 |
| Oct | 3.90 | 4.00 | -0.10 |
| Nov | 3.15 | 3.19 | -0.04 |
| Dec | 4.13 | 4.38 | -0.25 |
46.21 | 47.42 | -1.21 |