| Record high, °C | 38 | 38 | 40 | 37 | 37 | 40 | 40 | 41 | 43 | 38 | 42 | 36 | 43 | 
                                            
                    | Average high, °C | 30 | 32 | 32 | 31 | 31 | 34 | 35 | 36 | 33 | 31 | 29 | 28 | 32 | 
                                            
                    | Average temperature, °C | 25 | 27 | 26 | 25 | 25 | 28 | 29 | 30 | 29 | 27 | 25 | 25 | 27 | 
                                            
                    | Average low, °C | 22 | 22 | 20 | 17 | 18 | 21 | 25 | 26 | 25 | 23 | 22 | 22 | 22 | 
                                            
                    | Record low, °C | 18 | 17 | 10 | 8 | 9 | 11 | 13 | 17 | 19 | 17 | 17 | 19 | 8 | 
            
                                            
                    | Rain, days | 8 | 5 | 1 | 1 | 1 | 1 | 2 | 4 | 6 | 6 | 10 | 12 | 57 | 
            
                                                        
                    | Fog, days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 4 | 
            
                                            
                    | Thunderstorms, days | 15 | 12 | 2 | 0 | 0 | 0 | 2 | 9 | 13 | 12 | 13 | 13 | 91 | 
                                                                    
                    | Average precipitation, mm. | 206 | 80 | 20 | 3 | 2 | 4 | 23 | 52 | 99 | 140 | 218 | 303 | 1151 | 
                                                                                
                        | Relative humidity, % | 77 | 68 | 56 | 42 | 34 | 32 | 41 | 53 | 64 | 72 | 77 | 80 | 58 | 
                                                                                    
                        | Relative humidity morning, % | 94 | 89 | 80 | 63 | 51 | 44 | 49 | 66 | 78 | 86 | 92 | 94 | 74 | 
                                                                                    
                        | Relative humidity evening, % | 65 | 49 | 29 | 19 | 16 | 15 | 21 | 33 | 44 | 57 | 66 | 67 | 40 | 
                                                                        
                    | Wind speed, km/h | 4 | 5 | 4 | 5 | 6 | 7 | 7 | 7 | 8 | 7 | 6 | 6 | 6 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 
                                                        
                    | Dew point, °C | 21 | 20 | 17 | 11 | 8 | 9 | 15 | 20 | 21 | 21 | 21 | 21 | 205 | 
                                                        
                    | Growing degree-day, °C | 459 | 521 | 492 | 450 | 456 | 494 | 601 | 600 | 583 | 498 | 471 | 462 | 6087 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 19 | 21 | 21 | 20 | 20 | 22 | 22 | 22 | 22 | 20 | 19 | 18 | 20 |