| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 2.07 | 2.19 | -0.12 | 
| Feb | 1.89 | 1.97 | -0.08 | 
| Mar | 2.63 | 2.59 | 0.04 | 
| Apr | 3.86 | 3.72 | 0.14 | 
| May | 4.48 | 4.45 | 0.03 | 
| Jun | 4.20 | 4.22 | -0.02 | 
| Jul | 4.16 | 4.20 | -0.04 | 
| Aug | 3.30 | 3.43 | -0.13 | 
| Sep | 3.14 | 3.21 | -0.07 | 
| Oct | 3.29 | 3.19 | 0.10 | 
| Nov | 2.81 | 2.79 | 0.02 | 
| Dec | 2.17 | 2.24 | -0.07 | 
| 38.00 | 38.20 | -0.20 |