| Record high, °C | 35 | 35 | 33 | 33 | 40 | 36 | 42 | 41 | 40 | 32 | 38 | 37 | 42 | 
                                            
                    | Average high, °C | 28 | 30 | 30 | 28 | 28 | 29 | 30 | 30 | 30 | 28 | 28 | 28 | 29 | 
                                            
                    | Average temperature, °C | 27 | 27 | 27 | 25 | 26 | 27 | 28 | 28 | 29 | 28 | 27 | 26 | 27 | 
                                            
                    | Average low, °C | 26 | 26 | 25 | 22 | 22 | 23 | 24 | 25 | 26 | 26 | 25 | 25 | 25 | 
                                            
                    | Record low, °C | 22 | 18 | 15 | 12 | 8 | 10 | 11 | 11 | 17 | 18 | 21 | 22 | 8 | 
            
                                            
                    | Rain, days | 7 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 11 | 13 | 45 | 
            
                                                        
                    | Fog, days | 1 | 1 | 3 | 7 | 5 | 6 | 7 | 2 | 3 | 1 | 1 | 0 | 37 | 
            
                                            
                    | Thunderstorms, days | 4 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 4 | 19 | 
                                                                    
                    | Average precipitation, mm. | 413 | 205 | 38 | 4 | 1 | 1 | 0 | 0 | 33 | 201 | 545 | 664 | 2105 | 
                                                                                
                        | Relative humidity, % | 87 | 79 | 69 | 57 | 51 | 52 | 51 | 53 | 62 | 73 | 78 | 83 | 66 | 
                                                                                    
                        | Relative humidity morning, % | 92 | 91 | 86 | 73 | 62 | 71 | 77 | 78 | 83 | 89 | 91 | 93 | 82 | 
                                                                                    
                        | Relative humidity evening, % | 76 | 68 | 55 | 40 | 33 | 34 | 39 | 46 | 55 | 69 | 78 | 80 | 56 | 
                                                                        
                    | Wind speed, km/h | 5 | 4 | 4 | 5 | 5 | 5 | 6 | 7 | 7 | 6 | 5 | 5 | 5 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 
                                                        
                    | Dew point, °C | 24 | 23 | 21 | 16 | 15 | 16 | 17 | 18 | 21 | 22 | 23 | 23 | 238 | 
                                                        
                    | Growing degree-day, °C | 501 | 539 | 513 | 477 | 487 | 472 | 552 | 540 | 574 | 528 | 515 | 508 | 6206 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 18 | 19 | 19 | 19 | 20 | 21 | 24 | 25 | 24 | 20 | 19 | 18 | 20 |