| Record high, °C | 34 | 29 | 22 | 16 | 16 | 20 | 26 | 29 | 32 | 36 | 39 | 37 | 39 | 
                                            
                    | Average high, °C | 23 | 17 | 10 | 4 | 2 | 6 | 11 | 16 | 21 | 24 | 26 | 27 | 16 | 
                                            
                    | Average temperature, °C | 16 | 11 | 5 | 0 | -1 | 1 | 5 | 10 | 15 | 18 | 20 | 20 | 10 | 
                                            
                    | Average low, °C | 9 | 5 | 1 | -3 | -5 | -3 | 0 | 4 | 9 | 11 | 13 | 12 | 4 | 
                                            
                    | Record low, °C | -4 | -8 | -18 | -21 | -27 | -25 | -14 | -5 | -2 | 1 | 4 | 4 | -27 | 
            
                                            
                    | Rain, days | 9 | 10 | 9 | 6 | 4 | 5 | 9 | 14 | 14 | 12 | 8 | 7 | 107 | 
            
                                            
                    | Snow, days | 0 | 1 | 3 | 8 | 10 | 8 | 6 | 2 | 0 | 0 | 0 | 0 | 38 | 
                                                        
                    | Fog, days | 2 | 3 | 5 | 7 | 6 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 30 | 
            
                                            
                    | Thunderstorms, days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 5 | 3 | 4 | 19 | 
                                                                    
                    | Average precipitation, mm. | 42 | 45 | 68 | 56 | 39 | 36 | 39 | 49 | 68 | 60 | 52 | 44 | 598 | 
                                                                                
                        | Relative humidity, % | 68 | 74 | 80 | 83 | 83 | 77 | 70 | 65 | 67 | 67 | 63 | 62 | 72 | 
                                                                                    
                        | Relative humidity morning, % | 85 | 87 | 89 | 88 | 87 | 85 | 83 | 78 | 78 | 78 | 76 | 78 | 83 | 
                                                                                    
                        | Relative humidity evening, % | 46 | 55 | 72 | 77 | 74 | 62 | 51 | 50 | 52 | 50 | 43 | 41 | 56 | 
                                                                        
                    | Wind speed, km/h | 8 | 8 | 9 | 9 | 12 | 9 | 12 | 9 | 8 | 8 | 8 | 8 | 9 | 
                                                        
                    | Monthly sunshine, часов | 226 | 174 | 97 | 70 | 71 | 96 | 143 | 184 | 228 | 246 | 299 | 290 | 2123 | 
                                                        
                    | Day Length, часов | 13 | 12 | 10 | 10 | 10 | 11 | 12 | 14 | 15 | 16 | 16 | 14 | 13 | 
                                                        
                    | Dew point, °C | 8 | 5 | 1 | -2 | -4 | -2 | 0 | 2 | 7 | 10 | 11 | 11 | 47 | 
                                                        
                    | Growing degree-day, °C | 188 | 33 | 0 | 0 | 0 | 0 | 0 | 0 | 143 | 229 | 293 | 295 | 1180 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 14 | 10 | 6 | 5 | 6 | 9 | 12 | 15 | 18 | 21 | 22 | 20 | 13 |