Currently: 45 °F. Partly sunny. (Weather station: Glasgow Airport, United Kingdom). See more current weatherAnnual Weather Averages Near Dumbarton
Averages are for Glasgow Airport, which is 7 miles from Dumbarton.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Dumbarton
High Temp: 66 °F
Low Temp: 34 °F
Mean Temp: 48 °F
Precipitation: 2.60"
Humidity: 82%
Dew Point: 43 °F
Wind: 17 mph
Pressure: 29.89 "Hg
Visibility: 7 mi
January Climate & Weather Averages in Dumbarton
High Temp: 45 °F
Low Temp: 34 °F
Mean Temp: 39 °F
Precipitation: 3.26"
Humidity: 87%
Dew Point: 36 °F
Wind: 19 mph
Pressure: 29.83 "Hg
Visibility: 7 mi
February Climate & Weather Averages in Dumbarton
High Temp: 46 °F
Low Temp: 35 °F
Mean Temp: 40 °F
Precipitation: 2.95"
Humidity: 84%
Dew Point: 36 °F
Wind: 20 mph
Pressure: 29.87 "Hg
Visibility: 7 mi
March Climate & Weather Averages in Dumbarton
High Temp: 49 °F
Low Temp: 36 °F
Mean Temp: 42 °F
Precipitation: 2.42"
Humidity: 81%
Dew Point: 37 °F
Wind: 20 mph
Pressure: 29.91 "Hg
Visibility: 7 mi
April Climate & Weather Averages in Dumbarton
High Temp: 54 °F
Low Temp: 39 °F
Mean Temp: 46 °F
Precipitation: 1.75"
Humidity: 77%
Dew Point: 39 °F
Wind: 18 mph
Pressure: 29.93 "Hg
Visibility: 7 mi
May Climate & Weather Averages in Dumbarton
High Temp: 59 °F
Low Temp: 43 °F
Mean Temp: 51 °F
Precipitation: 1.88"
Humidity: 75%
Dew Point: 43 °F
Wind: 17 mph
Pressure: 29.96 "Hg
Visibility: 8 mi
June Climate & Weather Averages in Dumbarton
High Temp: 64 °F
Low Temp: 49 °F
Mean Temp: 56 °F
Precipitation: 2.10"
Humidity: 77%
Dew Point: 49 °F
Wind: 16 mph
Pressure: 29.97 "Hg
Visibility: 8 mi
July Climate & Weather Averages in Dumbarton
High Temp: 66 °F
Low Temp: 52 °F
Mean Temp: 59 °F
Precipitation: 2.25"
Humidity: 79%
Dew Point: 53 °F
Wind: 15 mph
Pressure: 29.92 "Hg
Visibility: 8 mi
August Climate & Weather Averages in Dumbarton
High Temp: 66 °F
Low Temp: 51 °F
Mean Temp: 58 °F
Precipitation: 2.61"
Humidity: 81%
Dew Point: 53 °F
Wind: 15 mph
Pressure: 29.91 "Hg
Visibility: 8 mi
September Climate & Weather Averages in Dumbarton
High Temp: 62 °F
Low Temp: 48 °F
Mean Temp: 55 °F
Precipitation: 2.35"
Humidity: 83%
Dew Point: 50 °F
Wind: 16 mph
Pressure: 29.93 "Hg
Visibility: 7 mi
October Climate & Weather Averages in Dumbarton
High Temp: 55 °F
Low Temp: 43 °F
Mean Temp: 49 °F
Precipitation: 3.37"
Humidity: 86%
Dew Point: 45 °F
Wind: 16 mph
Pressure: 29.83 "Hg
Visibility: 7 mi
November Climate & Weather Averages in Dumbarton
High Temp: 49 °F
Low Temp: 38 °F
Mean Temp: 44 °F
Precipitation: 3.08"
Humidity: 87%
Dew Point: 40 °F
Wind: 16 mph
Pressure: 29.80 "Hg
Visibility: 7 mi
December Climate & Weather Averages in Dumbarton
High Temp: 45 °F
Low Temp: 34 °F
Mean Temp: 40 °F
Precipitation: 3.17"
Humidity: 88%
Dew Point: 37 °F
Wind: 17 mph
Pressure: 29.81 "Hg
Visibility: 6 mi