| Record high, °C | 31 | 26 | 18 | 16 | 12 | 16 | 22 | 27 | 30 | 31 | 33 | 32 | 33 | 
                                            
                    | Average high, °C | 18 | 13 | 6 | 2 | 0 | 2 | 7 | 12 | 18 | 20 | 22 | 22 | 12 | 
                                            
                    | Average temperature, °C | 14 | 9 | 3 | 0 | -1 | 0 | 4 | 7 | 13 | 16 | 17 | 17 | 8 | 
                                            
                    | Average low, °C | 9 | 5 | 1 | -2 | -3 | -3 | 0 | 3 | 7 | 11 | 12 | 12 | 4 | 
                                            
                    | Record low, °C | 0 | -6 | -15 | -21 | -29 | -24 | -15 | -6 | -2 | 1 | 5 | 5 | -29 | 
            
                                            
                    | Rain, days | 11 | 12 | 13 | 11 | 8 | 7 | 11 | 14 | 13 | 14 | 13 | 11 | 138 | 
            
                                            
                    | Snow, days | 0 | 0 | 5 | 11 | 13 | 11 | 6 | 2 | 0 | 0 | 0 | 0 | 48 | 
                                                        
                    | Fog, days | 19 | 21 | 20 | 21 | 22 | 21 | 21 | 17 | 17 | 18 | 16 | 19 | 232 | 
            
                                            
                    | Thunderstorms, days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 4 | 4 | 3 | 15 | 
                                                                    
                    | Average precipitation, mm. | 50 | 40 | 40 | 30 | 30 | 30 | 30 | 50 | 90 | 100 | 90 | 90 | 670 | 
                                                                                                            
                        | Relative humidity morning, % | 88 | 88 | 88 | 88 | 89 | 89 | 87 | 82 | 81 | 82 | 82 | 86 | 86 | 
                                                                                    
                        | Relative humidity evening, % | 60 | 66 | 79 | 84 | 82 | 74 | 62 | 54 | 54 | 57 | 54 | 54 | 65 | 
                                                                        
                    | Wind speed, km/h | 16 | 17 | 19 | 20 | 20 | 19 | 17 | 16 | 14 | 16 | 14 | 14 | 17 | 
                                                                    
                    | Day Length, часов | 13 | 11 | 10 | 9 | 9 | 11 | 13 | 14 | 16 | 17 | 17 | 15 | 13 | 
                                                        
                    | Dew point, °C | 9 | 5 | 0 | -2 | -3 | -3 | 0 | 2 | 7 | 10 | 12 | 12 | 49 | 
                                                        
                    | Growing degree-day, °C | 117 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 95 | 175 | 241 | 233 | 860 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 11 | 6 | 4 | 3 | 4 | 6 | 10 | 13 | 18 | 17 | 18 | 16 | 10 |