| Record high, °C | 42 | 40 | 38 | 42 | 39 | 43 | 43 | 46 | 46 | 41 | 40 | 37 | 46 | 
                                            
                    | Average high, °C | 31 | 32 | 33 | 32 | 32 | 35 | 37 | 38 | 38 | 34 | 31 | 30 | 34 | 
                                            
                    | Average temperature, °C | 27 | 28 | 27 | 24 | 25 | 27 | 28 | 29 | 30 | 29 | 27 | 27 | 27 | 
                                            
                    | Average low, °C | 23 | 23 | 20 | 16 | 17 | 18 | 22 | 24 | 25 | 26 | 25 | 24 | 22 | 
                                            
                    | Record low, °C | 20 | 16 | 10 | 7 | 5 | 10 | 12 | 15 | 19 | 20 | 21 | 20 | 5 | 
            
                                            
                    | Rain, days | 8 | 3 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 4 | 9 | 12 | 40 | 
            
                                                        
                    | Fog, days | 2 | 5 | 6 | 3 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 18 | 
            
                                            
                    | Thunderstorms, days | 10 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 10 | 10 | 41 | 
                                                                    
                    | Average precipitation, mm. | 338 | 140 | 10 | 1 | 0 | 1 | 0 | 0 | 19 | 136 | 318 | 432 | 1393 | 
                                                                                
                        | Relative humidity, % | 84 | 77 | 64 | 50 | 43 | 43 | 42 | 45 | 54 | 67 | 77 | 82 | 61 | 
                                                                                    
                        | Relative humidity morning, % | 97 | 96 | 94 | 83 | 71 | 68 | 65 | 71 | 75 | 84 | 93 | 96 | 83 | 
                                                                                    
                        | Relative humidity evening, % | 68 | 60 | 33 | 21 | 17 | 15 | 17 | 19 | 29 | 47 | 64 | 70 | 38 | 
                                                                        
                    | Wind speed, km/h | 4 | 4 | 3 | 4 | 5 | 5 | 5 | 6 | 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 | 19 | 13 | 11 | 13 | 14 | 16 | 20 | 22 | 23 | 24 | 224 | 
                                                        
                    | Growing degree-day, °C | 510 | 549 | 501 | 446 | 456 | 469 | 570 | 582 | 620 | 564 | 533 | 524 | 6324 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 18 | 19 | 19 | 19 | 20 | 21 | 24 | 25 | 24 | 20 | 19 | 18 | 20 |