| Record high, °C | 
                                            41 | 
                                            40 | 
                                            35 | 
                                            24 | 
                                            21 | 
                                            24 | 
                                            31 | 
                                            35 | 
                                            42 | 
                                            40 | 
                                            46 | 
                                            42 | 
                                        46 | 
                
                                            
                    | Average high, °C | 
                                            31 | 
                                            26 | 
                                            21 | 
                                            16 | 
                                            14 | 
                                            15 | 
                                            18 | 
                                            22 | 
                                            28 | 
                                            33 | 
                                            36 | 
                                            34 | 
                                        24 | 
                
                                            
                    | Average temperature, °C | 
                                            25 | 
                                            20 | 
                                            16 | 
                                            12 | 
                                            10 | 
                                            10 | 
                                            13 | 
                                            16 | 
                                            21 | 
                                            26 | 
                                            29 | 
                                            28 | 
                                        19 | 
                
                                            
                    | Average low, °C | 
                                            18 | 
                                            14 | 
                                            10 | 
                                            7 | 
                                            5 | 
                                            5 | 
                                            7 | 
                                            9 | 
                                            14 | 
                                            19 | 
                                            21 | 
                                            21 | 
                                        12 | 
                
                                            
                    | Record low, °C | 
                                            9 | 
                                            4 | 
                                            -3 | 
                                            -1 | 
                                            -3 | 
                                            -5 | 
                                            -2 | 
                                            0 | 
                                            4 | 
                                            9 | 
                                            11 | 
                                            13 | 
                                        -5 | 
                
            
                                            
                    | Rain, days | 
                                            0 | 
                                            1 | 
                                            3 | 
                                            5 | 
                                            5 | 
                                            4 | 
                                            2 | 
                                            1 | 
                                            2 | 
                                            0 | 
                                            0 | 
                                            0 | 
                                        23 | 
                
            
                                                        
                    | Fog, days | 
                                            5 | 
                                            0 | 
                                            1 | 
                                            2 | 
                                            2 | 
                                            2 | 
                                            5 | 
                                            7 | 
                                            9 | 
                                            14 | 
                                            18 | 
                                            15 | 
                                        80 | 
                
            
                                            
                    | Thunderstorms, days | 
                                            0 | 
                                            4 | 
                                            5 | 
                                            6 | 
                                            5 | 
                                            4 | 
                                            5 | 
                                            2 | 
                                            2 | 
                                            1 | 
                                            0 | 
                                            0 | 
                                        34 | 
                
                                                                    
                    | Average precipitation, mm. | 
                                            6 | 
                                            33 | 
                                            48 | 
                                            92 | 
                                            84 | 
                                            65 | 
                                            53 | 
                                            27 | 
                                            20 | 
                                            6 | 
                                            2 | 
                                            4 | 
                                        440 | 
                
                                                                                
                        | Relative humidity, % | 
                                                    59 | 
                                                    63 | 
                                                    70 | 
                                                    77 | 
                                                    78 | 
                                                    75 | 
                                                    70 | 
                                                    64 | 
                                                    60 | 
                                                    54 | 
                                                    53 | 
                                                    56 | 
                                                65 | 
                    
                                                                                    
                        | Relative humidity morning, % | 
                                                    72 | 
                                                    70 | 
                                                    77 | 
                                                    82 | 
                                                    82 | 
                                                    83 | 
                                                    82 | 
                                                    78 | 
                                                    75 | 
                                                    77 | 
                                                    75 | 
                                                    74 | 
                                                77 | 
                    
                                                                                    
                        | Relative humidity evening, % | 
                                                    55 | 
                                                    58 | 
                                                    61 | 
                                                    67 | 
                                                    67 | 
                                                    64 | 
                                                    64 | 
                                                    59 | 
                                                    57 | 
                                                    56 | 
                                                    57 | 
                                                    58 | 
                                                60 | 
                    
                                                                        
                    | Wind speed, km/h | 
                                            22 | 
                                            9 | 
                                            9 | 
                                            9 | 
                                            9 | 
                                            9 | 
                                            9 | 
                                            9 | 
                                            22 | 
                                            22 | 
                                            22 | 
                                            22 | 
                                        14 | 
                
                                                                    
                    | Day Length, часов | 
                                            13 | 
                                            12 | 
                                            11 | 
                                            10 | 
                                            11 | 
                                            11 | 
                                            12 | 
                                            14 | 
                                            15 | 
                                            15 | 
                                            15 | 
                                            14 | 
                                        13 | 
                
                                                        
                    | Dew point, °C | 
                                            15 | 
                                            12 | 
                                            10 | 
                                            7 | 
                                            6 | 
                                            5 | 
                                            6 | 
                                            8 | 
                                            11 | 
                                            13 | 
                                            15 | 
                                            16 | 
                                        124 | 
                
                                                        
                    | Growing degree-day, °C | 
                                            300 | 
                                            189 | 
                                            66 | 
                                            273 | 
                                            0 | 
                                            79 | 
                                            189 | 
                                            333 | 
                                            499 | 
                                            567 | 
                                            552 | 
                                            465 | 
                                        3512 | 
                
                                                                    
                    | Solar radiation, global, Mj/m2 | 
                                            21 | 
                                            15 | 
                                            10 | 
                                            8 | 
                                            9 | 
                                            12 | 
                                            17 | 
                                            22 | 
                                            26 | 
                                            29 | 
                                            29 | 
                                            26 | 
                                        19 |