| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high ˚C (˚F) | 31.2 (88.1) | 31.6 (89.0) | 35.1 (95.1) | 37.9 (100.1) | 41.2 (106.1) | 41.2 (106.1) | 41.2 (106.1) | 42.8 (109.1) | 38.3 (100.9) | 38.9 (102.0) | 35.0 (95.0) | 32.8 (91.0) | 42.9 (109.1) |
| Average high ˚C (˚F) | 28.4 (83.2) | 28.6 (83.5) | 30.2 (86.4) | 32.2 (90.0) | 34.1 (93.4) | 36.6 (97.9) | 35.9 (96.6) | 35.3 (95.5) | 35.4 (95.7) | 33.0 (91.4) | 30.7 (87.3) | 28.9 (84.0) | 32.4 (90.3) |
| Daily mean ˚C (˚F) | 25.7 (78.3) | 26.0 (78.8) | 27.2 (81.0) | 28.9 (84.0) | 31.0 (87.8) | 32.7 (90.9) | 32.1 (89.8) | 31.5 (88.7) | 31.6 (88.9) | 28.9 (84.0) | 27.1 (80.8) | 26.0 (78.8) | 29.1 (84.4) |
| Average low ˚C (˚F) | 22.6 (72.7) | 23.2 (73.8) | 24.0 (75.2) | 25.6 (78.1) | 27.7 (81.9) | 28.8 (83.8) | 28.0 (82.4) | 27.5 (81.5) | 27.8 (82.0) | 24.6 (76.3) | 23.2 (73.8) | 22.9 (73.2) | 25.5 (77.9) |
| Record low ˚C (˚F) | 15.6 (60.1) | 17.2 (63.0) | 18.9 (66.0) | 18.9 (66.0) | 21.1 (70.0) | 23.9 (75.0) | 22.8 (73.0) | 23.3 (73.9) | 25.0 (77.0) | 18.9 (66.0) | 18.3 (64.9) | 16.7 (62.1) | 15.6 (60.1) |
| Average precipitation mm (inches) | 6 (0.2) | 3 (0.1) | 5 (0.2) | 2 (0.1) | 1 (0.0) | 0 (0) | 3 (0.1) | 3 (0.1) | 5 (0.2) | 1 (0.0) | 3 (0.1) | 5 (0.2) | 36 (1.4) |
| Average precipitation days (≥ 0.1 mm) | 3 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 3 | 20 |
| Average relative humidity (%) | 72 | 72 | 74 | 74 | 72 | 66 | 65 | 65 | 69 | 68 | 70 | 70 | 70 |
| Mean monthly sunshine hours | 241.8 | 203.4 | 217.0 | 240.0 | 303.8 | 282.0 | 241.8 | 269.7 | 270.0 | 294.5 | 285.0 | 257.3 | 3106.3 |
| Mean daily sunshine hours | 7.8 | 7.2 | 7.0 | 8.0 | 9.8 | 9.4 | 7.8 | 8.7 | 9.0 | 9.5 | 9.5 | 8.3 | 8.5 |
| Average rainfall mm | 6 | 9 | 12 | 11 | 12 | 8 | 30 | 56 | 39 | 18 | 6 | 5 | 17.67 |