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Climate & Weather Averages in Johnston Atoll, US Minor Outlying Islands

Currently: 73 °F. Mild. (Weather station: MADIS Weather Station TOAP6 (RAWS), US Minor Outlying Islands). See more current weather

Annual Weather Averages in Kekaha - Pacific Missile Test Facility Barking Sands

Kekaha - Pacific Missile Test Facility Barking Sands is 733 miles from Johnston Atoll, so the actual climate in Johnston Atoll can vary a bit.

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Johnston Atoll

High Temp: 87 °F

Low Temp: 65 °F

Mean Temp: 76 °F

Precipitation: 1.64"

Humidity: 70%

Dew Point: 65 °F

Wind: 13 mph

Pressure: 30.03 "Hg

Visibility: 10 mi

January Climate & Weather Averages in Johnston Atoll

High Temp: 80 °F

Low Temp: 65 °F

Mean Temp: 72 °F

Precipitation: 2.26"

Humidity: 72%

Dew Point: 63 °F

Wind: 14 mph

Pressure: 30.01 "Hg

Visibility: 10 mi

February Climate & Weather Averages in Johnston Atoll

High Temp: 79 °F

Low Temp: 65 °F

Mean Temp: 72 °F

Precipitation: 2.44"

Humidity: 71%

Dew Point: 62 °F

Wind: 15 mph

Pressure: 30.04 "Hg

Visibility: 10 mi

March Climate & Weather Averages in Johnston Atoll

High Temp: 80 °F

Low Temp: 66 °F

Mean Temp: 73 °F

Precipitation: 2.61"

Humidity: 70%

Dew Point: 62 °F

Wind: 14 mph

Pressure: 30.06 "Hg

Visibility: 10 mi

April Climate & Weather Averages in Johnston Atoll

High Temp: 82 °F

Low Temp: 67 °F

Mean Temp: 74 °F

Precipitation: 0.90"

Humidity: 69%

Dew Point: 64 °F

Wind: 13 mph

Pressure: 30.07 "Hg

Visibility: 10 mi

May Climate & Weather Averages in Johnston Atoll

High Temp: 84 °F

Low Temp: 69 °F

Mean Temp: 76 °F

Precipitation: 1.19"

Humidity: 68%

Dew Point: 65 °F

Wind: 13 mph

Pressure: 30.05 "Hg

Visibility: 10 mi

June Climate & Weather Averages in Johnston Atoll

High Temp: 85 °F

Low Temp: 71 °F

Mean Temp: 78 °F

Precipitation: 0.85"

Humidity: 69%

Dew Point: 67 °F

Wind: 13 mph

Pressure: 30.05 "Hg

Visibility: 10 mi

July Climate & Weather Averages in Johnston Atoll

High Temp: 87 °F

Low Temp: 72 °F

Mean Temp: 79 °F

Precipitation: 0.67"

Humidity: 68%

Dew Point: 68 °F

Wind: 13 mph

Pressure: 30.03 "Hg

Visibility: 10 mi

August Climate & Weather Averages in Johnston Atoll

High Temp: 87 °F

Low Temp: 73 °F

Mean Temp: 80 °F

Precipitation: 0.70"

Humidity: 67%

Dew Point: 68 °F

Wind: 12 mph

Pressure: 30.01 "Hg

Visibility: 10 mi

September Climate & Weather Averages in Johnston Atoll

High Temp: 87 °F

Low Temp: 72 °F

Mean Temp: 80 °F

Precipitation: 1.13"

Humidity: 68%

Dew Point: 68 °F

Wind: 12 mph

Pressure: 29.99 "Hg

Visibility: 10 mi

October Climate & Weather Averages in Johnston Atoll

High Temp: 86 °F

Low Temp: 71 °F

Mean Temp: 78 °F

Precipitation: 2.13"

Humidity: 70%

Dew Point: 68 °F

Wind: 12 mph

Pressure: 29.99 "Hg

Visibility: 10 mi

November Climate & Weather Averages in Johnston Atoll

High Temp: 83 °F

Low Temp: 69 °F

Mean Temp: 76 °F

Precipitation: 2.19"

Humidity: 71%

Dew Point: 66 °F

Wind: 13 mph

Pressure: 30.01 "Hg

Visibility: 10 mi

December Climate & Weather Averages in Johnston Atoll

High Temp: 81 °F

Low Temp: 67 °F

Mean Temp: 74 °F

Precipitation: 2.66"

Humidity: 73%

Dew Point: 64 °F

Wind: 13 mph

Pressure: 30.02 "Hg

Visibility: 10 mi

Quick Climate Info

Hottest Month August (80 °F avg)
Coldest Month February (72 °F avg)
Wettest Month December (2.66" avg)
Windiest Month February (15 mph avg)
Annual precip. 19.71" (per year)

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