| Record high, °C | 
                                            38 | 
                                            37 | 
                                            40 | 
                                            41 | 
                                            40 | 
                                            40 | 
                                            38 | 
                                            40 | 
                                            33 | 
                                            31 | 
                                            37 | 
                                            35 | 
                                        41 | 
                
                                            
                    | Average high, °C | 
                                            25 | 
                                            28 | 
                                            30 | 
                                            31 | 
                                            32 | 
                                            32 | 
                                            31 | 
                                            27 | 
                                            24 | 
                                            22 | 
                                            22 | 
                                            23 | 
                                        27 | 
                
                                            
                    | Average temperature, °C | 
                                            22 | 
                                            24 | 
                                            26 | 
                                            28 | 
                                            29 | 
                                            28 | 
                                            27 | 
                                            23 | 
                                            21 | 
                                            18 | 
                                            18 | 
                                            20 | 
                                        24 | 
                
                                            
                    | Average low, °C | 
                                            15 | 
                                            18 | 
                                            20 | 
                                            21 | 
                                            22 | 
                                            22 | 
                                            21 | 
                                            18 | 
                                            16 | 
                                            13 | 
                                            13 | 
                                            14 | 
                                        18 | 
                
                                            
                    | Record low, °C | 
                                            3 | 
                                            6 | 
                                            8 | 
                                            12 | 
                                            10 | 
                                            12 | 
                                            8 | 
                                            7 | 
                                            2 | 
                                            1 | 
                                            0 | 
                                            0 | 
                                        0 | 
                
            
            
                                                        
                    | Fog, days | 
                                            9 | 
                                            6 | 
                                            4 | 
                                            3 | 
                                            2 | 
                                            4 | 
                                            6 | 
                                            5 | 
                                            7 | 
                                            9 | 
                                            9 | 
                                            10 | 
                                        74 | 
                
            
                                            
                    | Thunderstorms, days | 
                                            4 | 
                                            6 | 
                                            5 | 
                                            5 | 
                                            7 | 
                                            5 | 
                                            5 | 
                                            5 | 
                                            3 | 
                                            3 | 
                                            2 | 
                                            3 | 
                                        53 | 
                
                                                                    
                    | Average precipitation, mm. | 
                                            77 | 
                                            131 | 
                                            151 | 
                                            144 | 
                                            147 | 
                                            135 | 
                                            130 | 
                                            145 | 
                                            114 | 
                                            71 | 
                                            50 | 
                                            50 | 
                                        1345 | 
                
                                                                                
                        | Relative humidity, % | 
                                                    65 | 
                                                    65 | 
                                                    64 | 
                                                    63 | 
                                                    65 | 
                                                    68 | 
                                                    69 | 
                                                    72 | 
                                                    75 | 
                                                    76 | 
                                                    70 | 
                                                    67 | 
                                                68 | 
                    
                                                                                    
                        | Relative humidity morning, % | 
                                                    79 | 
                                                    80 | 
                                                    83 | 
                                                    84 | 
                                                    85 | 
                                                    87 | 
                                                    87 | 
                                                    88 | 
                                                    86 | 
                                                    85 | 
                                                    80 | 
                                                    80 | 
                                                84 | 
                    
                                                                                    
                        | Relative humidity evening, % | 
                                                    56 | 
                                                    55 | 
                                                    56 | 
                                                    55 | 
                                                    56 | 
                                                    57 | 
                                                    58 | 
                                                    64 | 
                                                    68 | 
                                                    68 | 
                                                    61 | 
                                                    59 | 
                                                59 | 
                    
                                                                        
                    | Wind speed, km/h | 
                                            13 | 
                                            10 | 
                                            10 | 
                                            13 | 
                                            9 | 
                                            9 | 
                                            9 | 
                                            9 | 
                                            9 | 
                                            9 | 
                                            10 | 
                                            13 | 
                                        10 | 
                
                                                                    
                    | Day Length, часов | 
                                            12 | 
                                            13 | 
                                            14 | 
                                            14 | 
                                            14 | 
                                            13 | 
                                            13 | 
                                            13 | 
                                            11 | 
                                            11 | 
                                            11 | 
                                            12 | 
                                        13 | 
                
                                                        
                    | Dew point, °C | 
                                            15 | 
                                            17 | 
                                            19 | 
                                            20 | 
                                            21 | 
                                            22 | 
                                            20 | 
                                            18 | 
                                            16 | 
                                            14 | 
                                            13 | 
                                            13 | 
                                        208 | 
                
                                                        
                    | Growing degree-day, °C | 
                                            348 | 
                                            434 | 
                                            480 | 
                                            552 | 
                                            574 | 
                                            509 | 
                                            512 | 
                                            399 | 
                                            326 | 
                                            252 | 
                                            257 | 
                                            304 | 
                                        4945 | 
                
                                                                    
                    | Solar radiation, global, Mj/m2 | 
                                            17 | 
                                            20 | 
                                            23 | 
                                            24 | 
                                            24 | 
                                            21 | 
                                            19 | 
                                            16 | 
                                            13 | 
                                            11 | 
                                            12 | 
                                            15 | 
                                        18 |