Currently: 58 °F. Light rain. Mostly cloudy. (Weather station: Hector International Airport, USA). See more current weatherAnnual Weather Averages in Hector International Airport
Hector International Airport is 90 miles from Jamestown, so the actual climate in Jamestown can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Jamestown
High Temp: 82 °F
Low Temp: 1 °F
Mean Temp: 43 °F
Precipitation: 1.91"
Humidity: 70%
Dew Point: 33 °F
Wind: 17 mph
Pressure: 30.02 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Jamestown
High Temp: 19 °F
Low Temp: 1 °F
Mean Temp: 10 °F
Precipitation: 0.63"
Humidity: 80%
Dew Point: 5 °F
Wind: 17 mph
Pressure: 30.15 "Hg
Visibility: 8 mi
February Climate & Weather Averages in Jamestown
High Temp: 23 °F
Low Temp: 4 °F
Mean Temp: 13 °F
Precipitation: 0.60"
Humidity: 78%
Dew Point: 8 °F
Wind: 18 mph
Pressure: 30.15 "Hg
Visibility: 8 mi
March Climate & Weather Averages in Jamestown
High Temp: 36 °F
Low Temp: 19 °F
Mean Temp: 28 °F
Precipitation: 0.96"
Humidity: 75%
Dew Point: 21 °F
Wind: 19 mph
Pressure: 30.11 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Jamestown
High Temp: 54 °F
Low Temp: 32 °F
Mean Temp: 43 °F
Precipitation: 1.36"
Humidity: 62%
Dew Point: 30 °F
Wind: 20 mph
Pressure: 30.01 "Hg
Visibility: 10 mi
May Climate & Weather Averages in Jamestown
High Temp: 69 °F
Low Temp: 45 °F
Mean Temp: 57 °F
Precipitation: 3.02"
Humidity: 58%
Dew Point: 41 °F
Wind: 19 mph
Pressure: 29.96 "Hg
Visibility: 10 mi
June Climate & Weather Averages in Jamestown
High Temp: 78 °F
Low Temp: 56 °F
Mean Temp: 67 °F
Precipitation: 4.11"
Humidity: 64%
Dew Point: 54 °F
Wind: 16 mph
Pressure: 29.89 "Hg
Visibility: 10 mi
July Climate & Weather Averages in Jamestown
High Temp: 82 °F
Low Temp: 60 °F
Mean Temp: 71 °F
Precipitation: 3.08"
Humidity: 68%
Dew Point: 60 °F
Wind: 14 mph
Pressure: 29.93 "Hg
Visibility: 10 mi
August Climate & Weather Averages in Jamestown
High Temp: 81 °F
Low Temp: 57 °F
Mean Temp: 69 °F
Precipitation: 2.60"
Humidity: 68%
Dew Point: 58 °F
Wind: 14 mph
Pressure: 29.95 "Hg
Visibility: 10 mi
September Climate & Weather Averages in Jamestown
High Temp: 72 °F
Low Temp: 49 °F
Mean Temp: 60 °F
Precipitation: 2.74"
Humidity: 66%
Dew Point: 49 °F
Wind: 16 mph
Pressure: 29.97 "Hg
Visibility: 10 mi
October Climate & Weather Averages in Jamestown
High Temp: 56 °F
Low Temp: 36 °F
Mean Temp: 46 °F
Precipitation: 2.19"
Humidity: 68%
Dew Point: 35 °F
Wind: 18 mph
Pressure: 30.01 "Hg
Visibility: 10 mi
November Climate & Weather Averages in Jamestown
High Temp: 39 °F
Low Temp: 22 °F
Mean Temp: 30 °F
Precipitation: 0.83"
Humidity: 74%
Dew Point: 23 °F
Wind: 18 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Jamestown
High Temp: 24 °F
Low Temp: 8 °F
Mean Temp: 16 °F
Precipitation: 0.81"
Humidity: 80%
Dew Point: 11 °F
Wind: 17 mph
Pressure: 30.10 "Hg
Visibility: 8 mi