| No. of Stations | Synoptic Stations | Summer Simmer Index (M±SD), ˚F | |||
| June | July | August | Summer (Totally) | ||
| 1 | Ahar | 70.8±7.1 | 77.48±5.78 | 77.1±6 | 75.06±6.93 |
| 2 | Ahvaz | 101.92±3.88 | 106.51±4 | 107.35±5 | 105.3±5 |
| 3 | Anzali | 87.68±6.6 | 94.66±5.3 | 95.27±6 | 92.6±6.93 |
| 4 | Arak | 83.35±5.33 | 84.73±3.86 | 77.2±6.3 | 81.72±6.2 |
| 5 | Ardebil | 63.78±8 | 69.33±6.4 | 69.4±7.3 | 67.54±7.73 |
| 6 | Babolsar | 89.85±5.8 | 96.19±4.8 | 97.45±5.4 | 94.55±6.3 |
| 7 | Bam | 95.06±4.67 | 96.7±4.4 | 93.4±4.5 | 95.07±4.75 |
| 8 | Bandarabbas | 111.3±3.4 | 115.45±2.6 | 114.7±2.86 | 113.85±3.47 |
| 9 | Birjand | 83±5 | 85.3±4.4 | 81.46±4.6 | 83.26±4.93 |
| 10 | Bushehr | 104.95±3.7 | 110.73±3.8 | 113.44±4.1 | 109.76±5.24 |
| 11 | Chahbahar | 111.6±3.4 | 108.6±3.6 | 104.4±3.7 | 108.17±4.64 |
| 12 | Darab | 77.9±4.2 | 83±4 | 79.47±3.94 | 80.15±4.6 |
| 13 | Fasa | 92.52±4 | 90.83±3.6 | 82.44±4.65 | 88.55±6.04 |
| 14 | Gorgan | 89.8±5.9 | 96.2±4.6 | 97.1±5 | 94.43±6.1 |
| 15 | Hamedan | 74.35±5 | 82.1±4 | 80.1±4.1 | 78.87±5.5 |
| 16 | Karaj | 83.65±5.45 | 89.12±4.54 | 87.85±4.67 | 86.93±5.41 |
| 17 | Kashan | 91.52±4.3 | 96.6±3.67 | 93.94±3.7 | 94.05±4.4 |
| 18 | Kermanshah | 80.35±4.46 | 87.4±3.6 | 85.83±3.7 | 84.58±4.95 |
| 19 | Mahabad | 76.68±5.1 | 84.1±3.95 | 82.9±4.1 | 81.27±5.46 |
| 20 | Maku | 71.1±7.3 | 80.16±5.47 | 80.14±5.1 | 77.2±7.4 |
| 21 | Maragheh | 76.38±5.73 | 84.4±4.4 | 83.42±4.47 | 81.58±6 |
| 22 | Mashhad | 83.64±5.2 | 87.58±4.3 | 83.83±5.2 | 85.03±5.3 |
| 23 | Qazvin | 79.68±5.1 | 86±4 | 84.33±3.97 | 83.4±5.15 |
| 24 | Qom | 105.78±8.3 | 114.5±7.96 | 109.48±7.2 | 109.95±8.64 |
| 25 | Rasht | 86.5±6.9 | 92.43±5.5 | 92.8±6.35 | 90.62±6.91 |
| 26 | Sabzevar | 88.2±4.98 | 91.7±4.1 | 88.4±4.6 | 89.46±4.87 |
| 27 | Sanandaj | 78.62±4.95 | 86.85±4 | 84.88±4.2 | 83.51±5.62 |
| 28 | Saqez | 72.72±6 | 81.58±5.5 | 79.6±4.6 | 78.04±6.58 |
| 29 | Semnan | 88.95±5.1 | 94.51±4.2 | 92±4.6 | 91.86±5.17 |
| 30 | Shahrekord | 72.65±4.3 | 79.6±3.7 | 76.89±3.8 | 76.43±4.88 |
| 31 | Shahroud | 81.2±5.54 | 86.38±4.98 | 84.44±5. 1 | 84.05±5.62 |
| 32 | Shiraz | 91.91±3.4 | 89.9±3.4 | 81.52±4.26 | 87.73±5.85 |
| 33 | Tehran | 87.64±4.9 | 93.39±3.95 | 91.82±4.2 | 91.05±5 |
| 34 | Torbat Heydariyeh | 80.98±5 | 83.97±4.1 | 80.7±4.7 | 81.9±4.87 |
| 35 | Urmia | 73.95±5.8 | 81.85±4.5 | 80.27±4.36 | 78.76±6 |
| 36 | Yasuj | 78.84±3.9 | 84.6±3.67 | 82.83±3.53 | 82.13±4.4 |
| 37 | Yazd | 89.7±3.97 | 93.4±4 | 89.54±4.3 | 90.9±4.48 |
| 38 | Zabol | 97.5±5 | 99.86±4.2 | 96.2±4.69 | 97.86±4.9 |
| 39 | Zahedan | 86.1±4.2 | 88±3.9 | 84.16±4 | 86.1±4.36 |
| 40 | Zanjan | 80.78±5.4 | 86.5±4.1 | 86.1±4.3 | 84.5±5.3 |