| Record high, °C | 29 | 26 | 22 | 21 | 15 | 19 | 22 | 26 | 30 | 30 | 33 | 35 | 35 | 
                                            
                    | Average high, °C | 18 | 14 | 9 | 7 | 6 | 5 | 10 | 12 | 16 | 19 | 22 | 22 | 13 | 
                                            
                    | Average temperature, °C | 15 | 11 | 7 | 6 | 4 | 3 | 7 | 9 | 13 | 16 | 18 | 18 | 11 | 
                                            
                    | Average low, °C | 12 | 8 | 5 | 3 | 2 | 1 | 4 | 6 | 10 | 12 | 15 | 14 | 8 | 
                                            
                    | Record low, °C | 4 | -3 | -6 | -7 | -20 | -12 | -6 | -4 | 2 | 4 | 7 | 6 | -20 | 
            
                                            
                    | Rain, days | 18 | 19 | 19 | 18 | 19 | 12 | 19 | 18 | 20 | 19 | 16 | 17 | 214 | 
            
                                            
                    | Snow, days | 0 | 0 | 1 | 1 | 3 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 11 | 
                                                        
                    | Fog, days | 7 | 10 | 9 | 9 | 8 | 8 | 8 | 6 | 5 | 3 | 3 | 5 | 81 | 
            
                                            
                    | Thunderstorms, days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 1 | 5 | 
                                                                    
                    | Average precipitation, mm. | 66 | 81 | 81 | 75 | 62 | 45 | 57 | 49 | 56 | 65 | 67 | 66 | 770 | 
                                                                                
                        | Relative humidity, % | 81 | 86 | 88 | 91 | 89 | 89 | 82 | 76 | 73 | 75 | 79 | 81 | 83 | 
                                                                                    
                        | Relative humidity morning, % | 89 | 89 | 88 | 86 | 86 | 87 | 86 | 84 | 83 | 83 | 83 | 86 | 86 | 
                                                                                    
                        | Relative humidity evening, % | 64 | 68 | 77 | 81 | 78 | 72 | 63 | 56 | 55 | 59 | 57 | 55 | 65 | 
                                                                        
                    | Wind speed, km/h | 12 | 16 | 16 | 19 | 17 | 9 | 14 | 14 | 9 | 8 | 9 | 9 | 13 | 
                                                                    
                    | Day Length, часов | 13 | 11 | 10 | 9 | 9 | 11 | 13 | 15 | 16 | 17 | 17 | 15 | 13 | 
                                                        
                    | Dew point, °C | 11 | 8 | 5 | 3 | 1 | 0 | 2 | 3 | 7 | 10 | 12 | 12 | 74 | 
                                                        
                    | Growing degree-day, °C | 158 | 52 | 0 | 0 | 0 | 0 | 0 | 0 | 103 | 183 | 267 | 258 | 1022 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 10 | 6 | 3 | 2 | 3 | 5 | 9 | 13 | 18 | 18 | 18 | 16 | 10 |