| Record high, °C | 38 | 40 | 42 | 41 | 39 | 42 | 42 | 43 | 46 | 42 | 42 | 37 | 46 | 
                                            
                    | Average high, °C | 31 | 33 | 33 | 30 | 30 | 33 | 36 | 38 | 37 | 35 | 31 | 30 | 33 | 
                                            
                    | Average temperature, °C | 28 | 29 | 27 | 24 | 24 | 27 | 30 | 32 | 33 | 31 | 28 | 27 | 28 | 
                                            
                    | Average low, °C | 23 | 24 | 21 | 18 | 18 | 21 | 24 | 27 | 28 | 26 | 25 | 23 | 23 | 
                                            
                    | Record low, °C | 18 | 16 | 12 | 7 | 7 | 12 | 11 | 17 | 20 | 20 | 20 | 20 | 7 | 
            
                                            
                    | Rain, days | 6 | 2 | 1 | 0 | 1 | 0 | 0 | 1 | 3 | 4 | 7 | 8 | 33 | 
            
                        
                                            
                    | Thunderstorms, days | 10 | 5 | 0 | 0 | 0 | 0 | 0 | 3 | 6 | 10 | 12 | 13 | 59 | 
                                                                    
                    | Average precipitation, mm. | 88 | 18 | 1 | 0 | 1 | 0 | 1 | 7 | 26 | 67 | 155 | 185 | 548 | 
                                                                                
                        | Relative humidity, % | 74 | 58 | 43 | 37 | 33 | 27 | 26 | 32 | 44 | 58 | 71 | 77 | 48 | 
                                                                                    
                        | Relative humidity morning, % | 91 | 79 | 55 | 48 | 43 | 37 | 36 | 43 | 61 | 74 | 86 | 92 | 62 | 
                                                                                    
                        | Relative humidity evening, % | 59 | 39 | 26 | 23 | 20 | 16 | 17 | 20 | 30 | 43 | 58 | 65 | 35 | 
                                                                        
                    | Wind speed, km/h | 4 | 4 | 6 | 8 | 8 | 8 | 8 | 7 | 8 | 9 | 7 | 5 | 7 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 
                                                        
                    | Dew point, °C | 23 | 20 | 14 | 9 | 7 | 6 | 8 | 14 | 19 | 22 | 23 | 23 | 186 | 
                                                        
                    | Growing degree-day, °C | 534 | 592 | 522 | 443 | 434 | 483 | 620 | 672 | 719 | 633 | 567 | 533 | 6753 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 21 | 20 | 19 | 17 | 18 | 21 | 24 | 25 | 25 | 24 | 22 | 21 | 21 |