| 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 | 26 | 27 | 26 | 24 | 25 | 27 | 30 | 31 | 30 | 27 | 26 | 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. | 155 | 50 | 3 | 2 | 1 | 2 | 6 | 23 | 66 | 108 | 203 | 236 | 854 | 
                                                                                
                        | Relative humidity, % | 76 | 64 | 49 | 41 | 35 | 30 | 31 | 41 | 53 | 65 | 74 | 78 | 53 | 
                                                                                    
                        | 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 | 8 | 8 | 9 | 9 | 12 | 9 | 12 | 12 | 12 | 9 | 9 | 9 | 10 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 12 | 
                                                        
                    | Dew point, °C | 21 | 20 | 14 | 7 | 4 | 5 | 10 | 17 | 20 | 21 | 21 | 21 | 181 | 
                                                        
                    | Growing degree-day, °C | 483 | 543 | 492 | 439 | 456 | 502 | 620 | 600 | 611 | 525 | 499 | 482 | 6253 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 19 | 20 | 20 | 20 | 20 | 22 | 22 | 22 | 22 | 20 | 19 | 18 | 20 |