| Record high, °C | 
                                            32 | 
                                            27 | 
                                            17 | 
                                            15 | 
                                            13 | 
                                            20 | 
                                            23 | 
                                            27 | 
                                            31 | 
                                            32 | 
                                            35 | 
                                            36 | 
                                        36 | 
                
                                            
                    | Average high, °C | 
                                            21 | 
                                            14 | 
                                            6 | 
                                            2 | 
                                            0 | 
                                            1 | 
                                            7 | 
                                            15 | 
                                            21 | 
                                            23 | 
                                            25 | 
                                            25 | 
                                        13 | 
                
                                            
                    | Average temperature, °C | 
                                            15 | 
                                            9 | 
                                            3 | 
                                            0 | 
                                            -2 | 
                                            -1 | 
                                            3 | 
                                            10 | 
                                            15 | 
                                            18 | 
                                            20 | 
                                            19 | 
                                        9 | 
                
                                            
                    | Average low, °C | 
                                            10 | 
                                            4 | 
                                            0 | 
                                            -2 | 
                                            -6 | 
                                            -5 | 
                                            0 | 
                                            5 | 
                                            10 | 
                                            13 | 
                                            14 | 
                                            13 | 
                                        5 | 
                
                                            
                    | Record low, °C | 
                                            -5 | 
                                            -8 | 
                                            -16 | 
                                            -22 | 
                                            -30 | 
                                            -26 | 
                                            -18 | 
                                            -4 | 
                                            0 | 
                                            3 | 
                                            7 | 
                                            3 | 
                                        -30 | 
                
            
                                            
                    | Rain, days | 
                                            5 | 
                                            6 | 
                                            7 | 
                                            7 | 
                                            4 | 
                                            5 | 
                                            6 | 
                                            9 | 
                                            9 | 
                                            9 | 
                                            9 | 
                                            6 | 
                                        82 | 
                
            
                                            
                    | Snow, days | 
                                            0 | 
                                            1 | 
                                            3 | 
                                            7 | 
                                            8 | 
                                            7 | 
                                            4 | 
                                            1 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                        31 | 
                
                                                        
                    | Fog, days | 
                                            24 | 
                                            25 | 
                                            24 | 
                                            23 | 
                                            21 | 
                                            18 | 
                                            21 | 
                                            17 | 
                                            17 | 
                                            19 | 
                                            23 | 
                                            23 | 
                                        255 | 
                
            
                                            
                    | Thunderstorms, days | 
                                            1 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            1 | 
                                            4 | 
                                            5 | 
                                            4 | 
                                            3 | 
                                        18 | 
                
                                                                    
                    | Average precipitation, mm. | 
                                            43 | 
                                            22 | 
                                            34 | 
                                            30 | 
                                            31 | 
                                            28 | 
                                            28 | 
                                            44 | 
                                            55 | 
                                            86 | 
                                            79 | 
                                            49 | 
                                        529 | 
                
                                                                                
                        | Relative humidity, % | 
                                                    75 | 
                                                    79 | 
                                                    84 | 
                                                    85 | 
                                                    83 | 
                                                    81 | 
                                                    75 | 
                                                    69 | 
                                                    69 | 
                                                    69 | 
                                                    71 | 
                                                    73 | 
                                                76 | 
                    
                                                                                    
                        | Relative humidity morning, % | 
                                                    92 | 
                                                    89 | 
                                                    88 | 
                                                    86 | 
                                                    85 | 
                                                    85 | 
                                                    84 | 
                                                    84 | 
                                                    88 | 
                                                    91 | 
                                                    92 | 
                                                    92 | 
                                                88 | 
                    
                                                                                    
                        | Relative humidity evening, % | 
                                                    52 | 
                                                    59 | 
                                                    72 | 
                                                    75 | 
                                                    72 | 
                                                    68 | 
                                                    60 | 
                                                    51 | 
                                                    50 | 
                                                    54 | 
                                                    54 | 
                                                    50 | 
                                                60 | 
                    
                                                                        
                    | Wind speed, km/h | 
                                            8 | 
                                            8 | 
                                            6 | 
                                            8 | 
                                            9 | 
                                            8 | 
                                            8 | 
                                            8 | 
                                            8 | 
                                            8 | 
                                            6 | 
                                            8 | 
                                        8 | 
                
                                                                    
                    | Day Length, часов | 
                                            13 | 
                                            11 | 
                                            10 | 
                                            9 | 
                                            10 | 
                                            11 | 
                                            13 | 
                                            14 | 
                                            16 | 
                                            17 | 
                                            16 | 
                                            15 | 
                                        13 | 
                
                                                        
                    | Dew point, °C | 
                                            10 | 
                                            5 | 
                                            0 | 
                                            -3 | 
                                            -6 | 
                                            -5 | 
                                            -1 | 
                                            3 | 
                                            8 | 
                                            12 | 
                                            14 | 
                                            13 | 
                                        50 | 
                
                                                        
                    | Growing degree-day, °C | 
                                            167 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                            172 | 
                                            258 | 
                                            310 | 
                                            284 | 
                                        1191 | 
                
                                                                    
                    | Solar radiation, global, Mj/m2 | 
                                            12 | 
                                            8 | 
                                            4 | 
                                            3 | 
                                            4 | 
                                            7 | 
                                            11 | 
                                            15 | 
                                            19 | 
                                            20 | 
                                            19 | 
                                            17 | 
                                        12 |