| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.35 | 3.30 | 0.05 |
| Feb | 3.23 | 3.19 | 0.04 |
| Mar | 4.00 | 3.87 | 0.13 |
| Apr | 4.07 | 4.04 | 0.03 |
| May | 3.75 | 3.65 | 0.10 |
| Jun | 4.26 | 4.24 | 0.02 |
| Jul | 3.92 | 3.70 | 0.22 |
| Aug | 3.94 | 3.86 | 0.08 |
| Sep | 4.00 | 3.98 | 0.02 |
| Oct | 5.13 | 4.95 | 0.18 |
| Nov | 3.92 | 3.81 | 0.11 |
| Dec | 4.44 | 4.43 | 0.01 |
48.01 | 47.02 | 0.99 |