| Record high, °C | 31 | 24 | 17 | 15 | 11 | 17 | 22 | 26 | 28 | 31 | 35 | 33 | 35 | 
                                            
                    | Average high, °C | 18 | 13 | 5 | 2 | 0 | 2 | 8 | 12 | 18 | 21 | 23 | 23 | 12 | 
                                            
                    | Average temperature, °C | 14 | 9 | 3 | 0 | -1 | 0 | 4 | 8 | 13 | 16 | 18 | 18 | 9 | 
                                            
                    | Average low, °C | 10 | 5 | 1 | -1 | -4 | -3 | 1 | 3 | 8 | 11 | 12 | 12 | 5 | 
                                            
                    | Record low, °C | 0 | -6 | -16 | -22 | -28 | -25 | 0 | -6 | -2 | 1 | 4 | 3 | -28 | 
            
                                            
                    | 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 | 18 | 19 | 20 | 20 | 21 | 19 | 18 | 12 | 13 | 15 | 15 | 17 | 207 | 
            
                                            
                    | Thunderstorms, days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 5 | 4 | 5 | 19 | 
                                                        
                    | Snowfall, cm. | 0 | 0 | 2 | 11 | 10 | 9 | 3 | 1 | 0 | 0 | 0 | 0 | 37 | 
                                                        
                    | Average precipitation, mm. | 30 | 30 | 30 | 20 | 20 | 20 | 20 | 30 | 50 | 70 | 60 | 50 | 430 | 
                                                                                
                        | Relative humidity, % | 70 | 80 | 85 | 85 | 85 | 75 | 70 | 65 | 65 | 65 | 65 | 65 | 73 | 
                                                                                    
                        | Relative humidity morning, % | 90 | 89 | 89 | 90 | 91 | 90 | 86 | 81 | 79 | 81 | 83 | 86 | 86 | 
                                                                                    
                        | Relative humidity evening, % | 59 | 65 | 79 | 85 | 83 | 73 | 60 | 52 | 53 | 55 | 52 | 52 | 64 | 
                                                                        
                    | Wind speed, km/h | 14 | 14 | 16 | 17 | 16 | 20 | 16 | 19 | 19 | 16 | 16 | 16 | 17 | 
                                                        
                    | Monthly sunshine, часов | 164 | 128 | 57 | 43 | 53 | 84 | 125 | 172 | 232 | 224 | 240 | 231 | 1754 | 
                                                        
                    | Day Length, часов | 13 | 11 | 10 | 9 | 9 | 11 | 13 | 14 | 16 | 17 | 16 | 15 | 13 | 
                                                        
                    | Dew point, °C | 10 | 5 | 1 | -1 | -3 | -3 | 0 | 2 | 7 | 10 | 12 | 12 | 52 | 
                                                        
                    | Growing degree-day, °C | 133 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 103 | 183 | 250 | 250 | 919 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 11 | 7 | 4 | 3 | 4 | 7 | 10 | 13 | 17 | 17 | 17 | 16 | 10 |