Annual Weather Averages in Arcata Airport
Arcata Airport is 21 miles from Humboldt County, so the actual climate in Humboldt County can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Humboldt County
High Temp: 64 °F
Low Temp: 39 °F
Mean Temp: 52 °F
Precipitation: 3.18"
Humidity: 85%
Dew Point: 47 °F
Wind: 9 mph
Pressure: 30.07 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Humboldt County
High Temp: 56 °F
Low Temp: 40 °F
Mean Temp: 48 °F
Precipitation: 5.78"
Humidity: 83%
Dew Point: 43 °F
Wind: 9 mph
Pressure: 30.12 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Humboldt County
High Temp: 56 °F
Low Temp: 40 °F
Mean Temp: 48 °F
Precipitation: 5.60"
Humidity: 83%
Dew Point: 42 °F
Wind: 10 mph
Pressure: 30.09 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Humboldt County
High Temp: 56 °F
Low Temp: 41 °F
Mean Temp: 49 °F
Precipitation: 5.32"
Humidity: 84%
Dew Point: 44 °F
Wind: 10 mph
Pressure: 30.10 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Humboldt County
High Temp: 57 °F
Low Temp: 42 °F
Mean Temp: 50 °F
Precipitation: 3.15"
Humidity: 84%
Dew Point: 45 °F
Wind: 10 mph
Pressure: 30.10 "Hg
Visibility: 10 mi
May Climate & Weather Averages in Humboldt County
High Temp: 59 °F
Low Temp: 46 °F
Mean Temp: 53 °F
Precipitation: 1.56"
Humidity: 86%
Dew Point: 48 °F
Wind: 11 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
June Climate & Weather Averages in Humboldt County
High Temp: 62 °F
Low Temp: 48 °F
Mean Temp: 55 °F
Precipitation: 0.74"
Humidity: 85%
Dew Point: 51 °F
Wind: 11 mph
Pressure: 30.04 "Hg
Visibility: 9 mi
July Climate & Weather Averages in Humboldt County
High Temp: 63 °F
Low Temp: 51 °F
Mean Temp: 57 °F
Precipitation: 0.14"
Humidity: 87%
Dew Point: 53 °F
Wind: 9 mph
Pressure: 30.03 "Hg
Visibility: 8 mi
August Climate & Weather Averages in Humboldt County
High Temp: 64 °F
Low Temp: 51 °F
Mean Temp: 58 °F
Precipitation: 0.17"
Humidity: 88%
Dew Point: 54 °F
Wind: 8 mph
Pressure: 30.01 "Hg
Visibility: 8 mi
September Climate & Weather Averages in Humboldt County
High Temp: 64 °F
Low Temp: 48 °F
Mean Temp: 56 °F
Precipitation: 0.79"
Humidity: 86%
Dew Point: 52 °F
Wind: 7 mph
Pressure: 30.00 "Hg
Visibility: 8 mi
October Climate & Weather Averages in Humboldt County
High Temp: 63 °F
Low Temp: 45 °F
Mean Temp: 54 °F
Precipitation: 2.60"
Humidity: 85%
Dew Point: 49 °F
Wind: 7 mph
Pressure: 30.06 "Hg
Visibility: 8 mi
November Climate & Weather Averages in Humboldt County
High Temp: 58 °F
Low Temp: 42 °F
Mean Temp: 50 °F
Precipitation: 5.00"
Humidity: 85%
Dew Point: 45 °F
Wind: 8 mph
Pressure: 30.11 "Hg
Visibility: 8 mi
December Climate & Weather Averages in Humboldt County
High Temp: 55 °F
Low Temp: 39 °F
Mean Temp: 47 °F
Precipitation: 7.33"
Humidity: 83%
Dew Point: 42 °F
Wind: 10 mph
Pressure: 30.13 "Hg
Visibility: 9 mi