| Record high, °C | 37 | 33 | 26 | 20 | 21 | 22 | 25 | 27 | 33 | 37 | 42 | 40 | 42 | 
                                            
                    | Average high, °C | 28 | 23 | 17 | 13 | 12 | 13 | 15 | 19 | 25 | 30 | 32 | 32 | 22 | 
                                            
                    | Average temperature, °C | 22 | 17 | 12 | 9 | 7 | 8 | 10 | 14 | 20 | 25 | 27 | 26 | 16 | 
                                            
                    | Average low, °C | 16 | 12 | 8 | 5 | 3 | 4 | 5 | 8 | 12 | 16 | 19 | 19 | 11 | 
                                            
                    | Record low, °C | 12 | 2 | 0 | 0 | -2 | -3 | -2 | 3 | 7 | 12 | 16 | 10 | -3 | 
            
                                            
                    | Rain, days | 3 | 7 | 9 | 13 | 11 | 10 | 9 | 8 | 6 | 3 | 2 | 2 | 82 | 
            
                                            
                    | Snow, days | 0 | 0 | 0 | 1 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 6 | 
                                                        
                    | Fog, days | 4 | 5 | 5 | 5 | 6 | 5 | 10 | 8 | 7 | 4 | 2 | 2 | 63 | 
            
                                            
                    | Thunderstorms, days | 1 | 3 | 3 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 22 | 
                                                                    
                    | Average precipitation, mm. | 18 | 48 | 60 | 84 | 69 | 49 | 51 | 26 | 20 | 10 | 10 | 6 | 451 | 
                                                                                
                        | Relative humidity, % | 56 | 67 | 76 | 79 | 77 | 75 | 72 | 65 | 56 | 48 | 45 | 46 | 63 | 
                                                                                    
                        | Relative humidity morning, % | 64 | 71 | 76 | 76 | 75 | 75 | 76 | 75 | 73 | 68 | 59 | 58 | 71 | 
                                                                                    
                        | Relative humidity evening, % | 47 | 57 | 64 | 65 | 63 | 62 | 60 | 58 | 54 | 48 | 42 | 41 | 55 | 
                                                                        
                    | Wind speed, km/h | 7 | 7 | 5 | 6 | 6 | 6 | 7 | 5 | 5 | 6 | 7 | 7 | 6 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 11 | 10 | 10 | 11 | 12 | 14 | 15 | 15 | 15 | 14 | 13 | 
                                                        
                    | Dew point, °C | 13 | 11 | 8 | 6 | 3 | 3 | 5 | 8 | 11 | 14 | 14 | 14 | 110 | 
                                                        
                    | Growing degree-day, °C | 354 | 221 | 79 | 0 | 0 | 0 | 0 | 105 | 260 | 392 | 486 | 481 | 2379 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 19 | 12 | 7 | 5 | 6 | 9 | 13 | 19 | 24 | 28 | 28 | 25 | 16 |