| Record high, °C | 32 | 34 | 37 | 40 | 41 | 40 | 38 | 34 | 32 | 29 | 30 | 32 | 41 | 
                                            
                    | Average high, °C | 18 | 20 | 23 | 27 | 28 | 27 | 25 | 22 | 19 | 17 | 15 | 16 | 21 | 
                                            
                    | Average temperature, °C | 13 | 14 | 17 | 21 | 22 | 22 | 20 | 16 | 15 | 12 | 10 | 12 | 16 | 
                                            
                    | Average low, °C | 8 | 9 | 12 | 15 | 16 | 17 | 16 | 11 | 11 | 8 | 6 | 8 | 11 | 
                                            
                    | Record low, °C | 2 | 2 | 5 | 10 | 8 | 12 | 6 | 2 | 2 | -2 | -3 | -1 | -3 | 
            
                                            
                    | Rain, days | 5 | 5 | 5 | 5 | 7 | 5 | 6 | 5 | 5 | 6 | 4 | 5 | 63 | 
            
                                                        
                    | Fog, days | 4 | 3 | 2 | 1 | 1 | 2 | 4 | 7 | 7 | 9 | 7 | 7 | 54 | 
            
                                            
                    | Thunderstorms, days | 4 | 5 | 5 | 6 | 7 | 7 | 5 | 4 | 4 | 3 | 5 | 4 | 59 | 
                                                                    
                    | Average precipitation, mm. | 80 | 70 | 80 | 70 | 110 | 70 | 100 | 90 | 80 | 90 | 60 | 70 | 970 | 
                                                                                
                        | Relative humidity, % | 76 | 77 | 69 | 65 | 65 | 66 | 72 | 81 | 81 | 87 | 81 | 77 | 75 | 
                                                                                    
                        | Relative humidity morning, % | 91 | 90 | 89 | 88 | 87 | 91 | 91 | 93 | 92 | 93 | 93 | 92 | 91 | 
                                                                                    
                        | Relative humidity evening, % | 58 | 56 | 54 | 49 | 47 | 54 | 55 | 60 | 62 | 66 | 67 | 61 | 57 | 
                                                                        
                    | Wind speed, km/h | 14 | 14 | 14 | 12 | 12 | 11 | 10 | 10 | 10 | 12 | 12 | 14 | 12 | 
                                                        
                    | Monthly sunshine, часов | 181 | 225 | 240 | 287 | 288 | 214 | 228 | 188 | 166 | 127 | 144 | 169 | 2456 | 
                                                        
                    | Day Length, часов | 12 | 13 | 14 | 15 | 15 | 14 | 13 | 12 | 11 | 10 | 11 | 11 | 13 | 
                                                        
                    | Dew point, °C | 8 | 10 | 11 | 13 | 15 | 15 | 15 | 13 | 11 | 10 | 7 | 8 | 136 | 
                                                        
                    | Growing degree-day, °C | 108 | 155 | 242 | 344 | 396 | 353 | 336 | 208 | 164 | 83 | 34 | 86 | 2510 | 
                                                        
                    | Atmosphere pressure, bar | 1017 | 1015 | 1012 | 1011 | 1011 | 1011 | 1013 | 1015 | 1016 | 1017 | 1018 | 1017 | 12172 | 
                                                        
                    | Solar radiation, global, Mj/m2 | 16 | 19 | 23 | 25 | 24 | 21 | 18 | 13 | 10 | 8 | 9 | 12 | 17 |