| Record high, °C | 42 | 41 | 40 | 38 | 40 | 45 | 40 | 45 | 41 | 42 | 38 | 42 | 45 | 
                                            
                    | Average high, °C | 31 | 32 | 33 | 31 | 32 | 33 | 34 | 34 | 33 | 33 | 31 | 30 | 32 | 
                                            
                    | Average temperature, °C | 27 | 27 | 26 | 24 | 24 | 25 | 26 | 26 | 26 | 28 | 27 | 27 | 26 | 
                                            
                    | Average low, °C | 23 | 22 | 20 | 17 | 16 | 17 | 18 | 18 | 19 | 22 | 23 | 23 | 20 | 
                                            
                    | Record low, °C | 18 | 17 | 12 | 8 | 8 | 11 | 8 | 13 | 16 | 20 | 18 | 17 | 8 | 
            
                                            
                    | Rain, days | 11 | 5 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 4 | 12 | 15 | 53 | 
            
                                                        
                    | Fog, days | 7 | 13 | 12 | 8 | 2 | 4 | 7 | 10 | 14 | 9 | 6 | 4 | 96 | 
            
                                            
                    | Thunderstorms, days | 11 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 9 | 13 | 42 | 
                                                                    
                    | Average precipitation, mm. | 287 | 93 | 5 | 1 | 1 | 1 | 0 | 0 | 5 | 77 | 248 | 393 | 1110 | 
                                                                                
                        | Relative humidity, % | 81 | 76 | 64 | 53 | 49 | 49 | 51 | 54 | 60 | 69 | 77 | 80 | 64 | 
                                                                                    
                        | Relative humidity morning, % | 96 | 94 | 83 | 67 | 59 | 64 | 72 | 80 | 86 | 89 | 91 | 94 | 81 | 
                                                                                    
                        | Relative humidity evening, % | 72 | 63 | 41 | 28 | 25 | 23 | 29 | 39 | 48 | 56 | 68 | 74 | 47 | 
                                                                        
                    | Wind speed, km/h | 6 | 6 | 7 | 9 | 9 | 10 | 10 | 11 | 10 | 9 | 8 | 7 | 8 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 
                                                        
                    | Dew point, °C | 23 | 23 | 19 | 14 | 12 | 14 | 15 | 16 | 18 | 21 | 23 | 23 | 219 | 
                                                        
                    | Growing degree-day, °C | 501 | 533 | 477 | 431 | 422 | 424 | 487 | 477 | 502 | 525 | 533 | 515 | 5826 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 20 | 20 | 19 | 18 | 19 | 21 | 24 | 26 | 23 | 21 | 20 | 19 | 21 |