| Record high, °C | 42 | 44 | 40 | 38 | 38 | 43 | 43 | 45 | 48 | 46 | 42 | 43 | 48 | 
                                            
                    | Average high, °C | 33 | 35 | 34 | 30 | 30 | 33 | 36 | 38 | 39 | 37 | 33 | 32 | 34 | 
                                            
                    | Average temperature, °C | 28 | 29 | 26 | 23 | 23 | 26 | 29 | 32 | 33 | 31 | 28 | 27 | 28 | 
                                            
                    | Average low, °C | 25 | 25 | 21 | 17 | 17 | 20 | 23 | 26 | 28 | 27 | 25 | 24 | 23 | 
                                            
                    | Record low, °C | 15 | 14 | 12 | 10 | 6 | 7 | 12 | 12 | 19 | 18 | 20 | 18 | 6 | 
            
                                            
                    | Rain, days | 5 | 2 | 0 | 0 | 1 | 0 | 0 | 1 | 2 | 3 | 6 | 7 | 27 | 
            
                                                        
                    | Fog, days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 
            
                                            
                    | Thunderstorms, days | 13 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 8 | 12 | 15 | 59 | 
                                                                    
                    | Average precipitation, mm. | 88 | 18 | 0 | 0 | 1 | 0 | 0 | 4 | 22 | 54 | 144 | 174 | 505 | 
                                                                                
                        | Relative humidity, % | 68 | 52 | 38 | 35 | 29 | 25 | 23 | 28 | 39 | 51 | 64 | 71 | 44 | 
                                                                                    
                        | Relative humidity morning, % | 84 | 66 | 42 | 39 | 35 | 30 | 28 | 31 | 47 | 65 | 79 | 86 | 53 | 
                                                                                    
                        | Relative humidity evening, % | 49 | 30 | 18 | 15 | 15 | 12 | 13 | 14 | 21 | 32 | 44 | 53 | 26 | 
                                                                        
                    | Wind speed, km/h | 9 | 9 | 9 | 9 | 14 | 12 | 14 | 14 | 12 | 12 | 12 | 9 | 11 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 
                                                        
                    | Dew point, °C | 21 | 16 | 7 | 2 | 0 | 0 | 2 | 6 | 13 | 18 | 20 | 21 | 126 | 
                                                        
                    | Growing degree-day, °C | 533 | 586 | 467 | 396 | 396 | 439 | 586 | 650 | 706 | 617 | 551 | 517 | 6443 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 22 | 21 | 18 | 16 | 17 | 21 | 24 | 26 | 26 | 25 | 24 | 23 | 22 |