| Record high, °C | 38 | 37 | 38 | 34 | 38 | 38 | 40 | 41 | 41 | 37 | 37 | 34 | 41 | 
                                            
                    | Average high, °C | 30 | 32 | 32 | 32 | 32 | 35 | 36 | 37 | 33 | 30 | 30 | 30 | 32 | 
                                            
                    | Average temperature, °C | 27 | 28 | 27 | 25 | 25 | 27 | 29 | 31 | 29 | 27 | 27 | 27 | 27 | 
                                            
                    | Average low, °C | 24 | 24 | 22 | 19 | 18 | 19 | 22 | 24 | 25 | 24 | 24 | 24 | 23 | 
                                            
                    | Record low, °C | 20 | 20 | 15 | 15 | 12 | 13 | 17 | 20 | 20 | 20 | 22 | 22 | 12 | 
            
                                            
                    | Rain, days | 22 | 13 | 6 | 1 | 1 | 1 | 2 | 2 | 17 | 26 | 28 | 28 | 147 | 
            
                                                        
                    | Fog, days | 10 | 12 | 11 | 17 | 20 | 21 | 24 | 12 | 5 | 5 | 6 | 5 | 148 | 
            
                                            
                    | Thunderstorms, days | 7 | 7 | 1 | 0 | 0 | 0 | 1 | 3 | 11 | 8 | 6 | 5 | 49 | 
                                                                    
                    | Average precipitation, mm. | 389 | 206 | 59 | 7 | 5 | 2 | 7 | 18 | 313 | 574 | 584 | 640 | 2805 | 
                                                                                
                        | Relative humidity, % | 85 | 80 | 73 | 66 | 60 | 56 | 60 | 61 | 76 | 86 | 88 | 89 | 73 | 
                                                                                    
                        | Relative humidity morning, % | 96 | 95 | 92 | 88 | 86 | 88 | 91 | 90 | 92 | 96 | 96 | 97 | 92 | 
                                                                                    
                        | Relative humidity evening, % | 80 | 72 | 60 | 48 | 40 | 33 | 35 | 40 | 65 | 84 | 85 | 86 | 61 | 
                                                                        
                    | Wind speed, km/h | 17 | 13 | 14 | 14 | 14 | 16 | 19 | 23 | 22 | 23 | 23 | 22 | 19 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 14 | 13 | 13 | 12 | 
                                                        
                    | Dew point, °C | 25 | 24 | 22 | 19 | 17 | 17 | 20 | 22 | 24 | 25 | 25 | 25 | 264 | 
                                                        
                    | Growing degree-day, °C | 519 | 555 | 516 | 474 | 468 | 475 | 580 | 618 | 592 | 519 | 521 | 521 | 6357 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 15 | 17 | 17 | 18 | 19 | 21 | 23 | 24 | 18 | 13 | 13 | 12 | 18 |