Average maximum and minimum
temperatures at selected locations in
Mount Rainier National Park:
| Paradise | Longmire | Ohanapecosh | |
| (5,400'/1647m) | (2,762'/825m) | (1,950'/560m) | |
| January | 33/21 | 36/24 | 39/30 |
| February | 35/22 | 40/26 | 41/30 |
| March | 37/22 | 44/28 | 42/32 |
| April | 44/27 | 53/32 | 58/35 |
| May | 50/32 | 62/37 | 70/41 |
| June | 56/44 | 66/43 | 77/45 |
| July | 64/44 | 75/47 | 78/49 |
| August | 63/43 | 74/47 | 81/48 |
| September | 57/39 | 68/43 | 72/43 |
| October | 48/33 | 57/38 | 57/36 |
| November | 41/37 | 45/31 | 39/27 |
| December | 34/22 | 39/28 | 34/23 |