| Record high, °C | 32 | 34 | 40 | 36 | 36 | 37 | 39 | 37 | 38 | 34 | 32 | 30 | 40 | 
                                            
                    | Average high, °C | 30 | 33 | 34 | 34 | 34 | 36 | 36 | 35 | 33 | 31 | 29 | 29 | 33 | 
                                            
                    | Average temperature, °C | 25 | 26 | 26 | 26 | 26 | 28 | 30 | 29 | 28 | 26 | 25 | 25 | 27 | 
                                            
                    | Average low, °C | 21 | 21 | 19 | 18 | 19 | 21 | 23 | 24 | 23 | 21 | 21 | 21 | 21 | 
                                            
                    | Record low, °C | 15 | 17 | 12 | 11 | 12 | 17 | 16 | 20 | 18 | 18 | 18 | 18 | 11 | 
            
                                            
                    | Rain, days | 12 | 7 | 2 | 1 | 0 | 1 | 5 | 7 | 8 | 9 | 14 | 16 | 82 | 
            
                                                        
                    | Fog, days | 2 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 3 | 11 | 
            
                                            
                    | Thunderstorms, days | 24 | 25 | 10 | 3 | 0 | 3 | 14 | 21 | 25 | 22 | 21 | 21 | 189 | 
                                                                    
                    | Average precipitation, mm. | 260 | 118 | 18 | 5 | 1 | 7 | 41 | 87 | 134 | 168 | 231 | 258 | 1326 | 
                                                                                
                        | Relative humidity, % | 81 | 74 | 57 | 42 | 33 | 37 | 50 | 64 | 73 | 78 | 82 | 82 | 63 | 
                                                                                    
                        | Relative humidity morning, % | 96 | 95 | 76 | 45 | 34 | 40 | 63 | 81 | 89 | 94 | 96 | 97 | 76 | 
                                                                                    
                        | Relative humidity evening, % | 71 | 62 | 36 | 25 | 21 | 21 | 31 | 49 | 59 | 68 | 74 | 75 | 49 | 
                                                                        
                    | Wind speed, km/h | 4 | 4 | 5 | 6 | 9 | 8 | 8 | 8 | 7 | 6 | 6 | 5 | 6 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 
                                                        
                    | Dew point, °C | 22 | 21 | 17 | 12 | 9 | 12 | 18 | 22 | 23 | 22 | 22 | 22 | 220 | 
                                                        
                    | Growing degree-day, °C | 456 | 505 | 492 | 493 | 502 | 517 | 605 | 576 | 552 | 480 | 462 | 456 | 6095 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 18 | 20 | 21 | 21 | 20 | 22 | 22 | 22 | 21 | 19 | 17 | 16 | 20 |