| Record high, °C | 
                                            32 | 
                                            26 | 
                                            18 | 
                                            12 | 
                                            10 | 
                                            15 | 
                                            20 | 
                                            29 | 
                                            32 | 
                                            33 | 
                                            35 | 
                                            38 | 
                                        38 | 
                
                                            
                    | Average high, °C | 
                                            18 | 
                                            11 | 
                                            3 | 
                                            -1 | 
                                            -2 | 
                                            -1 | 
                                            4 | 
                                            13 | 
                                            20 | 
                                            22 | 
                                            24 | 
                                            24 | 
                                        11 | 
                
                                            
                    | Average temperature, °C | 
                                            12 | 
                                            6 | 
                                            1 | 
                                            -4 | 
                                            -7 | 
                                            -6 | 
                                            -2 | 
                                            6 | 
                                            13 | 
                                            17 | 
                                            18 | 
                                            17 | 
                                        6 | 
                
                                            
                    | Average low, °C | 
                                            7 | 
                                            3 | 
                                            -2 | 
                                            -6 | 
                                            -7 | 
                                            -8 | 
                                            -4 | 
                                            2 | 
                                            7 | 
                                            11 | 
                                            13 | 
                                            11 | 
                                        2 | 
                
                                            
                    | Record low, °C | 
                                            -5 | 
                                            -12 | 
                                            -24 | 
                                            -31 | 
                                            -37 | 
                                            -36 | 
                                            -27 | 
                                            -8 | 
                                            -4 | 
                                            -1 | 
                                            2 | 
                                            1 | 
                                        -37 | 
                
            
                                            
                    | Rain, days | 
                                            14 | 
                                            13 | 
                                            13 | 
                                            10 | 
                                            7 | 
                                            6 | 
                                            9 | 
                                            12 | 
                                            14 | 
                                            15 | 
                                            15 | 
                                            12 | 
                                        140 | 
                
            
                                            
                    | Snow, days | 
                                            0 | 
                                            2 | 
                                            10 | 
                                            18 | 
                                            18 | 
                                            17 | 
                                            12 | 
                                            3 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                        80 | 
                
                                                        
                    | Fog, days | 
                                            19 | 
                                            24 | 
                                            24 | 
                                            23 | 
                                            22 | 
                                            20 | 
                                            22 | 
                                            17 | 
                                            15 | 
                                            16 | 
                                            18 | 
                                            20 | 
                                        240 | 
                
            
                                            
                    | Thunderstorms, days | 
                                            1 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            1 | 
                                            3 | 
                                            4 | 
                                            4 | 
                                            3 | 
                                        16 | 
                
                                                                    
                    | Average precipitation, mm. | 
                                            55 | 
                                            48 | 
                                            48 | 
                                            41 | 
                                            35 | 
                                            28 | 
                                            33 | 
                                            45 | 
                                            53 | 
                                            80 | 
                                            88 | 
                                            77 | 
                                        631 | 
                
                                                                                
                        | Relative humidity, % | 
                                                    80 | 
                                                    83 | 
                                                    88 | 
                                                    89 | 
                                                    86 | 
                                                    86 | 
                                                    79 | 
                                                    72 | 
                                                    67 | 
                                                    71 | 
                                                    74 | 
                                                    75 | 
                                                79 | 
                    
                                                                                    
                        | Relative humidity morning, % | 
                                                    93 | 
                                                    92 | 
                                                    91 | 
                                                    91 | 
                                                    89 | 
                                                    89 | 
                                                    90 | 
                                                    89 | 
                                                    88 | 
                                                    90 | 
                                                    93 | 
                                                    94 | 
                                                91 | 
                    
                                                                                    
                        | Relative humidity evening, % | 
                                                    63 | 
                                                    72 | 
                                                    83 | 
                                                    87 | 
                                                    84 | 
                                                    79 | 
                                                    73 | 
                                                    59 | 
                                                    53 | 
                                                    56 | 
                                                    61 | 
                                                    58 | 
                                                69 | 
                    
                                                                        
                    | Wind speed, km/h | 
                                            11 | 
                                            12 | 
                                            14 | 
                                            14 | 
                                            14 | 
                                            14 | 
                                            13 | 
                                            13 | 
                                            11 | 
                                            11 | 
                                            10 | 
                                            10 | 
                                        12 | 
                
                                                        
                    | Monthly sunshine, часов | 
                                            160 | 
                                            100 | 
                                            37 | 
                                            29 | 
                                            49 | 
                                            69 | 
                                            125 | 
                                            171 | 
                                            251 | 
                                            260 | 
                                            264 | 
                                            244 | 
                                        1759 | 
                
                                                        
                    | Day Length, часов | 
                                            13 | 
                                            11 | 
                                            9 | 
                                            8 | 
                                            9 | 
                                            11 | 
                                            13 | 
                                            15 | 
                                            17 | 
                                            18 | 
                                            17 | 
                                            15 | 
                                        13 | 
                
                                                        
                    | Dew point, °C | 
                                            7 | 
                                            2 | 
                                            -1 | 
                                            -5 | 
                                            -8 | 
                                            -10 | 
                                            -3 | 
                                            1 | 
                                            6 | 
                                            10 | 
                                            12 | 
                                            11 | 
                                        22 | 
                
                                                        
                    | Growing degree-day, °C | 
                                            68 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            104 | 
                                            193 | 
                                            262 | 
                                            231 | 
                                        857 | 
                
                                                                    
                    | Solar radiation, global, Mj/m2 | 
                                            10 | 
                                            6 | 
                                            3 | 
                                            2 | 
                                            3 | 
                                            6 | 
                                            10 | 
                                            14 | 
                                            18 | 
                                            18 | 
                                            18 | 
                                            15 | 
                                        10 |