| Record high, °C | 46 | 42 | 39 | 32 | 32 | 32 | 38 | 42 | 47 | 47 | 47 | 47 | 47 | 
                                            
                    | Average high, °C | 38 | 35 | 29 | 24 | 21 | 22 | 27 | 32 | 38 | 41 | 41 | 40 | 32 | 
                                            
                    | Average temperature, °C | 32 | 29 | 24 | 19 | 17 | 18 | 21 | 25 | 31 | 34 | 34 | 34 | 27 | 
                                            
                    | Average low, °C | 26 | 23 | 19 | 14 | 12 | 13 | 16 | 20 | 25 | 27 | 29 | 29 | 21 | 
                                            
                    | Record low, °C | 21 | 17 | 12 | 7 | 1 | 7 | 7 | 10 | 17 | 21 | 23 | 22 | 1 | 
            
                                            
                    | Rain, days | 0 | 0 | 0 | 2 | 1 | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 7 | 
            
                                                        
                    | Fog, days | 4 | 3 | 4 | 7 | 6 | 5 | 3 | 1 | 1 | 1 | 2 | 2 | 39 | 
            
                                            
                    | Thunderstorms, days | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 4 | 
                                                                    
                    | Average precipitation, mm. | 0 | 0 | 0 | 10 | 10 | 20 | 10 | 10 | 0 | 0 | 0 | 0 | 60 | 
                                                                                
                        | Relative humidity, % | 65 | 65 | 60 | 65 | 65 | 70 | 65 | 70 | 75 | 75 | 75 | 75 | 69 | 
                                                                                    
                        | Relative humidity morning, % | 78 | 78 | 80 | 82 | 81 | 82 | 76 | 66 | 55 | 52 | 59 | 67 | 71 | 
                                                                                    
                        | Relative humidity evening, % | 46 | 45 | 49 | 54 | 52 | 52 | 46 | 38 | 31 | 28 | 37 | 41 | 43 | 
                                                                        
                    | Wind speed, km/h | 14 | 14 | 17 | 16 | 17 | 20 | 20 | 20 | 22 | 27 | 20 | 19 | 19 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 11 | 11 | 11 | 12 | 12 | 13 | 14 | 14 | 14 | 13 | 13 | 
                                                        
                    | Dew point, °C | 23 | 20 | 16 | 13 | 10 | 11 | 12 | 13 | 15 | 16 | 20 | 22 | 191 | 
                                                        
                    | Growing degree-day, °C | 600 | 586 | 417 | 276 | 189 | 204 | 344 | 475 | 620 | 600 | 620 | 620 | 5551 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 24 | 21 | 17 | 14 | 15 | 18 | 21 | 25 | 27 | 29 | 27 | 25 | 22 |