| Record high, °C | 33 | 36 | 40 | 38 | 39 | 40 | 41 | 40 | 42 | 40 | 42 | 38 | 42 | 
                                            
                    | Average high, °C | 30 | 32 | 35 | 35 | 35 | 37 | 37 | 36 | 33 | 31 | 30 | 29 | 33 | 
                                            
                    | Average temperature, °C | 25 | 27 | 28 | 27 | 27 | 29 | 30 | 29 | 28 | 26 | 25 | 25 | 27 | 
                                            
                    | Average low, °C | 21 | 21 | 21 | 19 | 18 | 21 | 23 | 23 | 22 | 21 | 21 | 21 | 21 | 
                                            
                    | Record low, °C | 20 | 18 | 11 | 12 | 15 | 18 | 20 | 21 | 20 | 20 | 20 | 20 | 11 | 
            
                                            
                    | Rain, days | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 2 | 5 | 6 | 27 | 
            
                                                        
                    | Fog, days | 1 | 1 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 10 | 
            
                                            
                    | Thunderstorms, days | 9 | 6 | 0 | 0 | 0 | 0 | 2 | 3 | 8 | 6 | 6 | 8 | 48 | 
                                                                    
                    | Average precipitation, mm. | 221 | 89 | 13 | 3 | 2 | 8 | 49 | 84 | 119 | 147 | 143 | 198 | 1076 | 
                                                                                
                        | Relative humidity, % | 82 | 75 | 59 | 41 | 29 | 32 | 46 | 61 | 70 | 78 | 81 | 83 | 61 | 
                                                                                    
                        | Relative humidity morning, % | 95 | 93 | 82 | 62 | 35 | 44 | 61 | 77 | 85 | 91 | 93 | 93 | 76 | 
                                                                                    
                        | Relative humidity evening, % | 68 | 59 | 36 | 22 | 18 | 24 | 34 | 43 | 56 | 62 | 68 | 69 | 47 | 
                                                                        
                    | Wind speed, km/h | 6 | 6 | 6 | 6 | 8 | 6 | 8 | 6 | 8 | 6 | 6 | 6 | 7 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 12 | 
                                                        
                    | Dew point, °C | 22 | 22 | 18 | 10 | 3 | 8 | 15 | 21 | 22 | 22 | 22 | 22 | 207 | 
                                                        
                    | Growing degree-day, °C | 458 | 499 | 533 | 525 | 508 | 526 | 611 | 575 | 534 | 467 | 474 | 456 | 6167 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 17 | 20 | 20 | 20 | 21 | 22 | 22 | 21 | 20 | 18 | 17 | 16 | 20 |