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Climate & Weather Averages in St. Mary's, Alaska, USA

Currently: 6 °F. Sunny. (Weather station: Cape Romanzoff Airways Facilities Sector, USA). See more current weather

Annual Weather Averages Near St. Mary's

Averages are for Saint Mary's, which is 4 miles from St. Mary's.

Based on weather reports collected during 1985–2015.

All Year Climate & Weather Averages in St. Mary's

High Temp: 61 °F

Low Temp: 1 °F

Mean Temp: 29 °F

Precipitation: 0.15"

Humidity: 79%

Dew Point: 23 °F

Wind: 11 mph

Pressure: 29.79 "Hg

Visibility: 9 mi

January Climate & Weather Averages in St. Mary's

High Temp: 11 °F

Low Temp: 1 °F

Mean Temp: 6 °F

Precipitation: 0.01"

Humidity: 78%

Dew Point: 0 °F

Wind: 13 mph

Pressure: 29.72 "Hg

Visibility: 9 mi

February Climate & Weather Averages in St. Mary's

High Temp: 17 °F

Low Temp: 5 °F

Mean Temp: 11 °F

Precipitation: 0.01"

Humidity: 80%

Dew Point: 6 °F

Wind: 14 mph

Pressure: 29.77 "Hg

Visibility: 9 mi

March Climate & Weather Averages in St. Mary's

High Temp: 19 °F

Low Temp: 6 °F

Mean Temp: 13 °F

Precipitation: 0.00"

Humidity: 76%

Dew Point: 6 °F

Wind: 13 mph

Pressure: 29.84 "Hg

Visibility: 9 mi

April Climate & Weather Averages in St. Mary's

High Temp: 32 °F

Low Temp: 19 °F

Mean Temp: 25 °F

Precipitation: 0.01"

Humidity: 79%

Dew Point: 19 °F

Wind: 12 mph

Pressure: 29.85 "Hg

Visibility: 10 mi

May Climate & Weather Averages in St. Mary's

High Temp: 47 °F

Low Temp: 32 °F

Mean Temp: 40 °F

Precipitation: 0.15"

Humidity: 75%

Dew Point: 31 °F

Wind: 10 mph

Pressure: 29.92 "Hg

Visibility: 10 mi

June Climate & Weather Averages in St. Mary's

High Temp: 59 °F

Low Temp: 43 °F

Mean Temp: 51 °F

Precipitation: 0.38"

Humidity: 72%

Dew Point: 41 °F

Wind: 9 mph

Pressure: 29.90 "Hg

Visibility: 11 mi

July Climate & Weather Averages in St. Mary's

High Temp: 61 °F

Low Temp: 48 °F

Mean Temp: 54 °F

Precipitation: 0.49"

Humidity: 79%

Dew Point: 47 °F

Wind: 9 mph

Pressure: 29.90 "Hg

Visibility: 10 mi

August Climate & Weather Averages in St. Mary's

High Temp: 57 °F

Low Temp: 46 °F

Mean Temp: 52 °F

Precipitation: 0.28"

Humidity: 83%

Dew Point: 46 °F

Wind: 10 mph

Pressure: 29.87 "Hg

Visibility: 9 mi

September Climate & Weather Averages in St. Mary's

High Temp: 49 °F

Low Temp: 38 °F

Mean Temp: 44 °F

Precipitation: 0.25"

Humidity: 82%

Dew Point: 38 °F

Wind: 10 mph

Pressure: 29.71 "Hg

Visibility: 9 mi

October Climate & Weather Averages in St. Mary's

High Temp: 35 °F

Low Temp: 25 °F

Mean Temp: 30 °F

Precipitation: 0.14"

Humidity: 84%

Dew Point: 25 °F

Wind: 10 mph

Pressure: 29.67 "Hg

Visibility: 9 mi

November Climate & Weather Averages in St. Mary's

High Temp: 21 °F

Low Temp: 12 °F

Mean Temp: 17 °F

Precipitation: 0.03"

Humidity: 83%

Dew Point: 12 °F

Wind: 11 mph

Pressure: 29.71 "Hg

Visibility: 9 mi

December Climate & Weather Averages in St. Mary's

High Temp: 15 °F

Low Temp: 4 °F

Mean Temp: 9 °F

Precipitation: 0.07"

Humidity: 81%

Dew Point: 4 °F

Wind: 12 mph

Pressure: 29.63 "Hg

Visibility: 9 mi

Quick Climate Info

Hottest MonthJuly (54 °F avg)
Coldest MonthJanuary (6 °F avg)
Wettest MonthJuly (0.49" avg)
Windiest MonthFebruary (14 mph avg)
Annual precip.1.81" (per year)

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