| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 1.70 | 1.65 | 0.05 | 
| Feb | 1.90 | 1.88 | 0.02 | 
| Mar | 3.15 | 3.10 | 0.05 | 
| Apr | 5.04 | 4.86 | 0.18 | 
| May | 6.54 | 6.67 | -0.13 | 
| Jun | 5.48 | 5.76 | -0.28 | 
| Jul | 4.33 | 4.44 | -0.11 | 
| Aug | 3.59 | 3.58 | 0.01 | 
| Sep | 4.60 | 4.70 | -0.10 | 
| Oct | 3.66 | 3.67 | -0.01 | 
| Nov | 3.12 | 3.05 | 0.07 | 
| Dec | 2.32 | 2.26 | 0.06 | 
| 45.43 | 45.62 | -0.19 |