NWS Jacksonville » Climate Page » St. Simons Island Normals for May
| SSI | April Normals | May Normals | June Normals |
| April Records | May Records | June Records |
| St. Simons Island Normals for May | |||||||
| Day | High | Low | Avg | Pcpn | Year To Date | HDD | CDD |
| 01 | 79 | 62 | 70 | 0.05 | 13.11 | 01 | 06 |
| 02 | 79 | 63 | 71 | 0.05 | 13.16 | 01 | 06 |
| 03 | 79 | 63 | 71 | 0.05 | 13.21 | 00 | 07 |
| 04 | 79 | 63 | 71 | 0.05 | 13.26 | 00 | 07 |
| 05 | 80 | 64 | 72 | 0.06 | 13.32 | 00 | 07 |
| 06 | 80 | 64 | 72 | 0.05 | 13.37 | 00 | 07 |
| 07 | 80 | 64 | 72 | 0.06 | 13.43 | 00 | 07 |
| 08 | 81 | 64 | 72 | 0.05 | 13.48 | 00 | 08 |
| 09 | 81 | 65 | 73 | 0.06 | 13.54 | 00 | 08 |
| 10 | 81 | 65 | 73 | 0.04 | 13.58 | 00 | 08 |
| 11 | 81 | 65 | 73 | 0.05 | 13.63 | 00 | 08 |
| 12 | 81 | 66 | 74 | 0.05 | 13.68 | 00 | 09 |
| 13 | 82 | 66 | 74 | 0.05 | 13.73 | 00 | 09 |
| 14 | 82 | 66 | 74 | 0.05 | 13.78 | 00 | 09 |
| 15 | 82 | 67 | 74 | 0.04 | 13.82 | 00 | 09 |
| 16 | 82 | 67 | 75 | 0.05 | 13.87 | 00 | 10 |
| 17 | 83 | 67 | 75 | 0.05 | 13.92 | 00 | 10 |
| 18 | 83 | 68 | 75 | 0.05 | 13.97 | 00 | 10 |
| 19 | 83 | 68 | 75 | 0.05 | 14.02 | 00 | 10 |
| 20 | 83 | 68 | 76 | 0.06 | 14.08 | 00 | 11 |
| 21 | 83 | 68 | 76 | 0.05 | 14.13 | 00 | 11 |
| 22 | 84 | 69 | 76 | 0.06 | 14.19 | 00 | 11 |
| 23 | 84 | 69 | 76 | 0.07 | 14.26 | 00 | 11 |
| 24 | 84 | 69 | 77 | 0.07 | 14.33 | 00 | 12 |
| 25 | 84 | 70 | 77 | 0.07 | 14.40 | 00 | 12 |
| 26 | 84 | 70 | 77 | 0.07 | 14.47 | 00 | 12 |
| 27 | 85 | 70 | 77 | 0.08 | 14.55 | 00 | 12 |
| 28 | 85 | 70 | 78 | 0.08 | 14.63 | 00 | 12 |
| 29 | 85 | 70 | 78 | 0.09 | 14.72 | 00 | 13 |
| 30 | 85 | 71 | 78 | 0.10 | 14.82 | 00 | 13 |
| 31 | 85 | 71 | 78 | 0.10 | 14.92 | 00 | 13 |
| Month | 82.2 | 66.8 | 74.5 | 1.86 | 14.92 | 0004 | 0299 |
| Season | - | - | - | - | - | 0237 | 0433 |