| Record high, °C | 28 | 22 | 13 | 12 | 13 | 12 | 19 | 25 | 32 | 32 | 33 | 32 | 33 | 
                                            
                    | Average high, °C | 16 | 10 | 5 | 2 | 1 | 1 | 3 | 7 | 13 | 17 | 21 | 19 | 10 | 
                                            
                    | Average temperature, °C | 12 | 7 | 3 | 0 | -1 | -1 | 1 | 4 | 9 | 13 | 16 | 15 | 7 | 
                                            
                    | Average low, °C | 8 | 5 | 1 | -1 | -3 | -3 | -1 | 1 | 5 | 10 | 12 | 12 | 4 | 
                                            
                    | Record low, °C | -2 | -7 | -17 | -20 | -22 | -25 | -20 | -10 | -5 | -1 | 3 | 1 | -25 | 
            
                                            
                    | Rain, days | 6 | 5 | 6 | 6 | 5 | 4 | 4 | 5 | 4 | 4 | 5 | 7 | 61 | 
            
                                            
                    | Snow, days | 0 | 0 | 4 | 10 | 13 | 13 | 10 | 5 | 0 | 0 | 0 | 0 | 55 | 
                                                        
                    | Fog, days | 18 | 20 | 17 | 19 | 19 | 17 | 21 | 16 | 15 | 16 | 16 | 19 | 213 | 
            
                                            
                    | Thunderstorms, days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 2 | 7 | 
                                                                    
                    | Average precipitation, mm. | 50 | 40 | 50 | 50 | 40 | 30 | 30 | 40 | 30 | 40 | 50 | 70 | 520 | 
                                                                                
                        | Relative humidity, % | 80 | 82 | 86 | 88 | 87 | 84 | 81 | 78 | 74 | 71 | 73 | 76 | 80 | 
                                                                                    
                        | Relative humidity morning, % | 91 | 91 | 89 | 88 | 88 | 86 | 89 | 85 | 75 | 78 | 81 | 89 | 86 | 
                                                                                    
                        | Relative humidity evening, % | 70 | 78 | 84 | 87 | 85 | 78 | 73 | 60 | 54 | 59 | 60 | 63 | 71 | 
                                                                        
                    | Wind speed, km/h | 12 | 12 | 16 | 14 | 16 | 9 | 14 | 9 | 14 | 12 | 12 | 9 | 12 | 
                                                                    
                    | Day Length, часов | 13 | 11 | 9 | 8 | 8 | 10 | 13 | 15 | 17 | 19 | 18 | 16 | 13 | 
                                                        
                    | Dew point, °C | 10 | 5 | 1 | -1 | -2 | -2 | -2 | 0 | 5 | 9 | 12 | 11 | 46 | 
                                                        
                    | Growing degree-day, °C | 75 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 117 | 215 | 181 | 588 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 10 | 5 | 3 | 2 | 2 | 5 | 9 | 14 | 19 | 19 | 18 | 16 | 10 |