| Record high, °C | 37 | 36 | 27 | 22 | 20 | 22 | 27 | 27 | 32 | 37 | 38 | 40 | 40 | 
                                            
                    | Average high, °C | 26 | 22 | 17 | 14 | 13 | 13 | 15 | 18 | 22 | 26 | 29 | 29 | 20 | 
                                            
                    | Average temperature, °C | 20 | 16 | 12 | 9 | 8 | 9 | 10 | 13 | 16 | 20 | 22 | 22 | 15 | 
                                            
                    | Average low, °C | 14 | 10 | 7 | 5 | 4 | 4 | 5 | 7 | 11 | 14 | 16 | 16 | 9 | 
                                            
                    | Record low, °C | 7 | 2 | -2 | -3 | -5 | -2 | -2 | 0 | 0 | 8 | 10 | 10 | -5 | 
            
            
                                                        
                    | Fog, days | 27 | 26 | 26 | 26 | 27 | 24 | 27 | 27 | 29 | 28 | 29 | 29 | 325 | 
            
                                            
                    | Thunderstorms, days | 5 | 6 | 5 | 3 | 3 | 3 | 3 | 4 | 3 | 4 | 2 | 4 | 45 | 
                                                                    
                    | Average precipitation, mm. | 83 | 132 | 168 | 143 | 143 | 112 | 90 | 82 | 50 | 31 | 29 | 45 | 1108 | 
                                                                                
                        | Relative humidity, % | 70 | 78 | 85 | 85 | 82 | 84 | 79 | 73 | 71 | 67 | 62 | 65 | 75 | 
                                                                                    
                        | Relative humidity morning, % | 90 | 90 | 89 | 86 | 85 | 84 | 86 | 87 | 88 | 87 | 86 | 87 | 87 | 
                                                                                    
                        | Relative humidity evening, % | 60 | 64 | 68 | 67 | 64 | 62 | 61 | 60 | 59 | 58 | 55 | 56 | 61 | 
                                                                        
                    | Wind speed, km/h | 12 | 12 | 8 | 12 | 12 | 16 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 10 | 10 | 10 | 11 | 12 | 14 | 15 | 16 | 15 | 14 | 13 | 
                                                        
                    | Dew point, °C | 16 | 13 | 8 | 5 | 4 | 4 | 6 | 8 | 12 | 16 | 18 | 18 | 128 | 
                                                        
                    | Growing degree-day, °C | 292 | 181 | 50 | 0 | 0 | 0 | 0 | 67 | 189 | 292 | 379 | 379 | 1828 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 16 | 10 | 6 | 5 | 6 | 9 | 13 | 17 | 21 | 23 | 24 | 22 | 14 |