| Record high, °C | 41 | 41 | 38 | 42 | 40 | 41 | 43 | 46 | 45 | 45 | 39 | 42 | 46 | 
                                            
                    | Average high, °C | 30 | 32 | 34 | 33 | 33 | 36 | 38 | 38 | 37 | 33 | 30 | 29 | 34 | 
                                            
                    | Average temperature, °C | 26 | 27 | 26 | 25 | 26 | 28 | 30 | 32 | 31 | 28 | 26 | 26 | 28 | 
                                            
                    | Average low, °C | 21 | 21 | 18 | 16 | 17 | 19 | 22 | 24 | 25 | 23 | 21 | 21 | 21 | 
                                            
                    | Record low, °C | 19 | 15 | 12 | 11 | 10 | 11 | 11 | 12 | 19 | 18 | 18 | 17 | 10 | 
            
                                            
                    | Rain, days | 8 | 4 | 1 | 0 | 0 | 0 | 0 | 1 | 3 | 6 | 10 | 12 | 45 | 
            
                                                        
                    | Fog, days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 
            
                                            
                    | Thunderstorms, days | 15 | 10 | 1 | 0 | 0 | 0 | 0 | 1 | 5 | 11 | 13 | 14 | 70 | 
                                                                    
                    | Average precipitation, mm. | 283 | 105 | 11 | 0 | 0 | 1 | 1 | 10 | 61 | 173 | 272 | 370 | 1286 | 
                                                                                
                        | Relative humidity, % | 80 | 75 | 59 | 42 | 36 | 30 | 31 | 37 | 53 | 70 | 80 | 81 | 56 | 
                                                                                    
                        | Relative humidity morning, % | 93 | 92 | 81 | 56 | 39 | 32 | 36 | 45 | 59 | 80 | 89 | 92 | 66 | 
                                                                                    
                        | Relative humidity evening, % | 68 | 58 | 32 | 20 | 19 | 16 | 17 | 21 | 31 | 53 | 69 | 72 | 40 | 
                                                                        
                    | Wind speed, km/h | 3 | 3 | 4 | 4 | 7 | 7 | 7 | 6 | 6 | 5 | 4 | 4 | 5 | 
                                                                    
                    | Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 
                                                        
                    | Dew point, °C | 23 | 22 | 17 | 11 | 9 | 9 | 11 | 15 | 21 | 22 | 23 | 23 | 205 | 
                                                        
                    | Growing degree-day, °C | 489 | 524 | 474 | 450 | 484 | 506 | 617 | 651 | 660 | 552 | 508 | 508 | 6423 | 
                                                                    
                    | Solar radiation, global, Mj/m2 | 19 | 19 | 20 | 19 | 20 | 22 | 24 | 24 | 23 | 20 | 18 | 17 | 20 |