| Record high, °C | 36 | 40 | 43 | 40 | 41 | 47 | 42 | 43 | 46 | 40 | 38 | 35 | 47 | 
                                            
                    | Average high, °C | 31 | 33 | 34 | 33 | 32 | 36 | 38 | 39 | 38 | 34 | 31 | 30 | 34 | 
                                            
                    | Average temperature, °C | 26 | 28 | 26 | 24 | 24 | 27 | 30 | 32 | 31 | 29 | 27 | 26 | 28 | 
                                            
                    | Average low, °C | 21 | 21 | 18 | 16 | 16 | 18 | 21 | 24 | 24 | 22 | 21 | 21 | 20 | 
                                            
                    | Record low, °C | 17 | 15 | 11 | 8 | 8 | 10 | 14 | 18 | 18 | 17 | 17 | 17 | 8 | 
            
                                            
                    | Rain, days | 12 | 4 | 6 | 0 | 0 | 0 | 0 | 1 | 5 | 8 | 12 | 15 | 63 | 
            
                                                        
                    | Fog, days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3 | 
            
                                            
                    | Thunderstorms, days | 12 | 7 | 1 | 0 | 0 | 0 | 0 | 3 | 8 | 11 | 14 | 15 | 71 | 
                                                                    
                    | Average precipitation, mm. | 187 | 58 | 3 | 1 | 0 | 1 | 5 | 13 | 50 | 111 | 220 | 276 | 923 | 
                                                                                
                        | Relative humidity, % | 77 | 66 | 45 | 33 | 29 | 26 | 25 | 36 | 50 | 66 | 77 | 80 | 51 | 
                                                                                    
                        | Relative humidity morning, % | 94 | 86 | 52 | 36 | 31 | 26 | 29 | 47 | 69 | 84 | 92 | 94 | 62 | 
                                                                                    
                        | Relative humidity evening, % | 59 | 42 | 23 | 18 | 16 | 14 | 16 | 21 | 33 | 49 | 61 | 65 | 35 | 
                                                                        
                    | Wind speed, km/h | 6 | 6 | 7 | 9 | 11 | 11 | 11 | 10 | 10 | 10 | 9 | 8 | 9 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 
                                                        
                    | Dew point, °C | 22 | 21 | 13 | 7 | 5 | 6 | 8 | 15 | 20 | 22 | 22 | 22 | 182 | 
                                                        
                    | Growing degree-day, °C | 492 | 546 | 471 | 446 | 446 | 492 | 617 | 648 | 663 | 567 | 512 | 490 | 6390 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 20 | 20 | 20 | 18 | 18 | 21 | 23 | 24 | 23 | 22 | 20 | 19 | 21 |