Annual Weather Averages in Sliven
Based on weather reports collected during 2012–2021.
All Year Climate & Weather Averages in Sliven
High Temp: 89 °F
Low Temp: 30 °F
Mean Temp: 58 °F
Precipitation: 2.02"
Humidity: 74%
Dew Point: 48 °F
Wind: 12 mph
Pressure: 30.02 "Hg
Visibility: 12 mi
January Climate & Weather Averages in Sliven
High Temp: 44 °F
Low Temp: 30 °F
Mean Temp: 37 °F
Precipitation: 1.98"
Humidity: 81%
Dew Point: 31 °F
Wind: 12 mph
Pressure: 30.08 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Sliven
High Temp: 49 °F
Low Temp: 34 °F
Mean Temp: 42 °F
Precipitation: 1.94"
Humidity: 80%
Dew Point: 35 °F
Wind: 12 mph
Pressure: 30.10 "Hg
Visibility: 10 mi
March Climate & Weather Averages in Sliven
High Temp: 57 °F
Low Temp: 39 °F
Mean Temp: 48 °F
Precipitation: 2.10"
Humidity: 76%
Dew Point: 39 °F
Wind: 13 mph
Pressure: 30.01 "Hg
Visibility: 11 mi
April Climate & Weather Averages in Sliven
High Temp: 66 °F
Low Temp: 46 °F
Mean Temp: 56 °F
Precipitation: 1.48"
Humidity: 73%
Dew Point: 46 °F
Wind: 13 mph
Pressure: 29.98 "Hg
Visibility: 12 mi
May Climate & Weather Averages in Sliven
High Temp: 74 °F
Low Temp: 55 °F
Mean Temp: 65 °F
Precipitation: 3.36"
Humidity: 72%
Dew Point: 54 °F
Wind: 13 mph
Pressure: 29.91 "Hg
Visibility: 13 mi
June Climate & Weather Averages in Sliven
High Temp: 82 °F
Low Temp: 62 °F
Mean Temp: 72 °F
Precipitation: 3.11"
Humidity: 71%
Dew Point: 61 °F
Wind: 12 mph
Pressure: 29.92 "Hg
Visibility: 14 mi
July Climate & Weather Averages in Sliven
High Temp: 87 °F
Low Temp: 66 °F
Mean Temp: 77 °F
Precipitation: 1.04"
Humidity: 64%
Dew Point: 63 °F
Wind: 14 mph
Pressure: 29.90 "Hg
Visibility: 14 mi
August Climate & Weather Averages in Sliven
High Temp: 89 °F
Low Temp: 67 °F
Mean Temp: 78 °F
Precipitation: 1.42"
Humidity: 62%
Dew Point: 63 °F
Wind: 15 mph
Pressure: 29.95 "Hg
Visibility: 14 mi
September Climate & Weather Averages in Sliven
High Temp: 80 °F
Low Temp: 59 °F
Mean Temp: 70 °F
Precipitation: 1.35"
Humidity: 67%
Dew Point: 57 °F
Wind: 13 mph
Pressure: 30.01 "Hg
Visibility: 14 mi
October Climate & Weather Averages in Sliven
High Temp: 67 °F
Low Temp: 50 °F
Mean Temp: 59 °F
Precipitation: 2.29"
Humidity: 76%
Dew Point: 49 °F
Wind: 11 mph
Pressure: 30.11 "Hg
Visibility: 12 mi
November Climate & Weather Averages in Sliven
High Temp: 57 °F
Low Temp: 43 °F
Mean Temp: 50 °F
Precipitation: 1.75"
Humidity: 83%
Dew Point: 44 °F
Wind: 8 mph
Pressure: 30.13 "Hg
Visibility: 10 mi
December Climate & Weather Averages in Sliven
High Temp: 47 °F
Low Temp: 34 °F
Mean Temp: 41 °F
Precipitation: 2.48"
Humidity: 81%
Dew Point: 34 °F
Wind: 13 mph
Pressure: 30.16 "Hg
Visibility: 10 mi