| Record high, °C | 32 | 29 | 20 | 17 | 16 | 20 | 24 | 28 | 32 | 37 | 36 | 39 | 39 | 
                                            
                    | Average high, °C | 21 | 16 | 10 | 7 | 6 | 7 | 12 | 16 | 20 | 23 | 25 | 24 | 16 | 
                                            
                    | Average temperature, °C | 15 | 11 | 6 | 5 | 3 | 3 | 7 | 10 | 14 | 17 | 19 | 18 | 11 | 
                                            
                    | Average low, °C | 12 | 8 | 5 | 2 | 1 | 1 | 4 | 6 | 10 | 13 | 15 | 14 | 8 | 
                                            
                    | Record low, °C | 2 | -3 | -8 | -11 | -18 | -12 | -9 | -4 | 0 | 3 | 7 | 6 | -18 | 
            
                                            
                    | Rain, days | 14 | 17 | 16 | 18 | 18 | 14 | 17 | 16 | 16 | 14 | 13 | 12 | 185 | 
            
                                            
                    | Snow, days | 0 | 0 | 1 | 2 | 4 | 4 | 2 | 1 | 0 | 0 | 0 | 0 | 14 | 
                                                        
                    | Fog, days | 10 | 13 | 14 | 13 | 13 | 14 | 10 | 8 | 7 | 6 | 5 | 7 | 120 | 
            
                                            
                    | Thunderstorms, days | 2 | 1 | 0 | 0 | 0 | 0 | 1 | 2 | 3 | 3 | 4 | 4 | 20 | 
                                                        
                    | Snowfall, cm. | 0 | 0 | 0 | 0 | 0 | 8 | 27 | 0 | 0 | 0 | 0 | 0 | 35 | 
                                                        
                    | Average precipitation, mm. | 53 | 56 | 53 | 49 | 46 | 39 | 41 | 45 | 55 | 56 | 57 | 54 | 604 | 
                                                                                
                        | Relative humidity, % | 75 | 85 | 90 | 90 | 90 | 85 | 80 | 75 | 70 | 70 | 70 | 70 | 79 | 
                                                                                    
                        | Relative humidity morning, % | 91 | 92 | 91 | 89 | 89 | 87 | 87 | 86 | 86 | 86 | 85 | 87 | 88 | 
                                                                                    
                        | Relative humidity evening, % | 59 | 69 | 76 | 81 | 79 | 71 | 65 | 58 | 57 | 58 | 54 | 51 | 65 | 
                                                                        
                    | Wind speed, km/h | 16 | 16 | 19 | 19 | 20 | 9 | 17 | 16 | 16 | 16 | 16 | 14 | 16 | 
                                                        
                    | Monthly sunshine, часов | 168 | 118 | 68 | 51 | 63 | 79 | 129 | 166 | 194 | 202 | 212 | 212 | 1662 | 
                                                        
                    | Day Length, часов | 13 | 11 | 10 | 9 | 9 | 11 | 13 | 14 | 16 | 17 | 16 | 15 | 13 | 
                                                        
                    | Dew point, °C | 11 | 8 | 4 | 2 | 1 | 0 | 2 | 3 | 8 | 11 | 12 | 12 | 74 | 
                                                        
                    | Growing degree-day, °C | 150 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 121 | 200 | 276 | 241 | 1005 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 11 | 7 | 4 | 3 | 3 | 6 | 10 | 14 | 18 | 19 | 19 | 17 | 11 |