| Record high, °C | 
                                            30 | 
                                            26 | 
                                            17 | 
                                            15 | 
                                            13 | 
                                            17 | 
                                            21 | 
                                            25 | 
                                            28 | 
                                            32 | 
                                            33 | 
                                            33 | 
                                        33 | 
                
                                            
                    | Average high, °C | 
                                            17 | 
                                            13 | 
                                            8 | 
                                            5 | 
                                            3 | 
                                            5 | 
                                            8 | 
                                            11 | 
                                            16 | 
                                            19 | 
                                            21 | 
                                            21 | 
                                        12 | 
                
                                            
                    | Average temperature, °C | 
                                            14 | 
                                            10 | 
                                            5 | 
                                            3 | 
                                            1 | 
                                            2 | 
                                            5 | 
                                            8 | 
                                            13 | 
                                            15 | 
                                            17 | 
                                            17 | 
                                        9 | 
                
                                            
                    | Average low, °C | 
                                            11 | 
                                            7 | 
                                            3 | 
                                            1 | 
                                            0 | 
                                            0 | 
                                            2 | 
                                            4 | 
                                            8 | 
                                            11 | 
                                            13 | 
                                            13 | 
                                        6 | 
                
                                            
                    | Record low, °C | 
                                            3 | 
                                            -1 | 
                                            -6 | 
                                            -17 | 
                                            -17 | 
                                            -16 | 
                                            -8 | 
                                            -4 | 
                                            1 | 
                                            2 | 
                                            6 | 
                                            6 | 
                                        -17 | 
                
            
                                            
                    | Rain, days | 
                                            8 | 
                                            5 | 
                                            9 | 
                                            8 | 
                                            7 | 
                                            6 | 
                                            5 | 
                                            6 | 
                                            5 | 
                                            8 | 
                                            8 | 
                                            8 | 
                                        83 | 
                
            
                                            
                    | Snow, days | 
                                            0 | 
                                            0 | 
                                            3 | 
                                            7 | 
                                            9 | 
                                            7 | 
                                            5 | 
                                            3 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                        34 | 
                
                                                        
                    | Fog, days | 
                                            19 | 
                                            18 | 
                                            16 | 
                                            17 | 
                                            17 | 
                                            16 | 
                                            17 | 
                                            15 | 
                                            15 | 
                                            18 | 
                                            17 | 
                                            17 | 
                                        202 | 
                
            
                                            
                    | Thunderstorms, days | 
                                            2 | 
                                            1 | 
                                            0 | 
                                            0 | 
                                            1 | 
                                            1 | 
                                            1 | 
                                            2 | 
                                            4 | 
                                            6 | 
                                            4 | 
                                            4 | 
                                        26 | 
                
                                                                    
                    | Average precipitation, mm. | 
                                            75 | 
                                            71 | 
                                            79 | 
                                            88 | 
                                            76 | 
                                            57 | 
                                            66 | 
                                            61 | 
                                            72 | 
                                            88 | 
                                            89 | 
                                            88 | 
                                        910 | 
                
                                                                                
                        | Relative humidity, % | 
                                                    79 | 
                                                    81 | 
                                                    84 | 
                                                    87 | 
                                                    86 | 
                                                    83 | 
                                                    78 | 
                                                    71 | 
                                                    71 | 
                                                    72 | 
                                                    75 | 
                                                    75 | 
                                                79 | 
                    
                                                                                    
                        | Relative humidity morning, % | 
                                                    89 | 
                                                    89 | 
                                                    89 | 
                                                    88 | 
                                                    88 | 
                                                    85 | 
                                                    86 | 
                                                    84 | 
                                                    82 | 
                                                    85 | 
                                                    85 | 
                                                    86 | 
                                                86 | 
                    
                                                                                    
                        | Relative humidity evening, % | 
                                                    67 | 
                                                    73 | 
                                                    79 | 
                                                    83 | 
                                                    82 | 
                                                    72 | 
                                                    68 | 
                                                    59 | 
                                                    58 | 
                                                    62 | 
                                                    60 | 
                                                    58 | 
                                                68 | 
                    
                                                                        
                    | Wind speed, km/h | 
                                            9 | 
                                            9 | 
                                            14 | 
                                            14 | 
                                            14 | 
                                            14 | 
                                            12 | 
                                            9 | 
                                            8 | 
                                            12 | 
                                            12 | 
                                            12 | 
                                        12 | 
                
                                                                    
                    | Day Length, часов | 
                                            13 | 
                                            11 | 
                                            10 | 
                                            9 | 
                                            9 | 
                                            11 | 
                                            13 | 
                                            15 | 
                                            16 | 
                                            17 | 
                                            17 | 
                                            15 | 
                                        13 | 
                
                                                        
                    | Dew point, °C | 
                                            10 | 
                                            7 | 
                                            3 | 
                                            1 | 
                                            0 | 
                                            -1 | 
                                            1 | 
                                            2 | 
                                            7 | 
                                            10 | 
                                            12 | 
                                            12 | 
                                        64 | 
                
                                                        
                    | Growing degree-day, °C | 
                                            117 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            86 | 
                                            150 | 
                                            207 | 
                                            207 | 
                                        766 | 
                
                                                                    
                    | Solar radiation, global, Mj/m2 | 
                                            10 | 
                                            6 | 
                                            3 | 
                                            2 | 
                                            3 | 
                                            5 | 
                                            9 | 
                                            13 | 
                                            17 | 
                                            17 | 
                                            17 | 
                                            15 | 
                                        10 |