Expand
Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, like December, in Saint Mary's, Alaska, is an extremely cold winter month, with an average temperature varying between 2.3°F (-16.5°C) and 11.3°F (-11.5°C). With average high temperatures of 11.3°F (-11.5°C) and lows of 2.3°F (-16.5°C), January is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Saint Mary's, is a subzero cold month, with temperature in the range of an average high of 15.8°F (-9°C) and an average low of 5.4°F (-14.8°C). February notes an average high-temperature of a freezing cold 15.8°F (-9°C), subtly differing from January's 11.3°F (-11.5°C). Weather in February »
Weather in March
March, the first month of the spring in Saint Mary's, is still a freezing cold month, with an average temperature varying between 5.7°F (-14.6°C) and 18°F (-7.8°C). With the advent of March, Saint Mary's experiences an average high-temperature of a still subzero cold 18°F (-7.8°C), mirroring a close resemblance to the previous month. Weather in March »
Weather in April
April, like March, is a freezing cold spring month in Saint Mary's, Alaska, with an average temperature varying between 31.6°F (-0.2°C) and 20.5°F (-6.4°C). As April arrives, Saint Mary's's weather shows an increase in high-temperatures, moving from March's freezing cold 18°F (-7.8°C) to a still subzero cold 31.6°F (-0.2°C). Weather in April »
Weather in May
The last month of the spring, May, is a chilly month in Saint Mary's, Alaska, with an average temperature varying between 35.2°F (1.8°C) and 48.9°F (9.4°C). As Saint Mary's transitions into May, the average high-temperature shows a marked escalation, increasing from a freezing cold 31.6°F (-0.2°C) in April to a frosty 48.9°F (9.4°C). Weather in May »
Weather in June
June, the first month of the summer in Saint Mary's, is a comfortable month, with temperature in the range of an average high of 61.2°F (16.2°C) and an average low of 45.1°F (7.3°C). June brings a rise in Saint Mary's's average high-temperature, moving from a chilly 48.9°F (9.4°C) in May to an enjoyable 61.2°F (16.2°C). Weather in June »
Weather in July
July, the same as June, is another refreshing summer month in Saint Mary's, Alaska, with an average temperature varying between 47.5°F (8.6°C) and 61.5°F (16.4°C). July is the warmest month of the year, registering average temperatures as high as 61.5°F (16.4°C) and as low as 47.5°F (8.6°C). Weather in July »
Weather in August
August, the last month of the summer in Saint Mary's, is another mild month, with temperature in the range of an average low of 46.4°F (8°C) and an average high of 59°F (15°C). The arrival of August denotes a barely perceptible change in the average high-temperatures to a mild 59°F (15°C) from July's 61.5°F (16.4°C). Weather in August »
Weather in September
September, the first month of the autumn in Saint Mary's, is still a cool month, with an average temperature ranging between max 51.1°F (10.6°C) and min 40.1°F (4.5°C). With the onset of September, Saint Mary's's average high-temperature slightly adjusts, moderately receding from August's moderate 59°F (15°C) to a cool 51.1°F (10.6°C). Weather in September »
Weather in October
October, like September, in Saint Mary's, Alaska, is another cold autumn month, with an average temperature fluctuating between 31.1°F (-0.5°C) and 37.9°F (3.3°C). October's onset brings a slight change in high-temperatures, falling from a fresh 51.1°F (10.6°C) in September to a cold 37.9°F (3.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a subzero cold month in Saint Mary's, Alaska, with temperature in the range of an average high of 21.6°F (-5.8°C) and an average low of 14.9°F (-9.5°C). As Saint Mary's transitions into November, a noticeable drop in the average high-temperature is observed, falling from an icy 37.9°F (3.3°C) in October to a subzero cold 21.6°F (-5.8°C). Weather in November »
Weather in December
December, the first month of the winter in Saint Mary's, is still a freezing cold month, with an average temperature fluctuating between 14.7°F (-9.6°C) and 5.9°F (-14.5°C). During the shift to December, Saint Mary's records a mild decrease in average high-temperature, moving from 21.6°F (-5.8°C) in November to a still freezing cold 14.7°F (-9.6°C). Weather in December »
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
The coldest temperatures occur during January, when averages reach a peak of 11.3°F (-11.5°C) and a low of 2.3°F (-16.5°C).
What is the most humid month?
The months with the highest humidity are January through March and December, with an average relative humidity of 91%.
What is the driest month?
January and June are months with the least rain when the rain falls for 2.4 days and typically aggregates up to 0.87" (22mm) of rain.
How much does it rain?
In Saint Mary's, during the entire year, the rain falls for 104.5 days and collects up to 15.75" (400mm) of precipitation.
When does it snow in Saint Mary's?
January through May, September through December are months with snowfall.
How many days does it snow?
Throughout the year, there are 71.4 snowfall days, and 22.72" (577mm) of snow is accumulated.
What is the snowiest month?
February is the month with the most snowfall. Snow falls for 11.4 days and accumulates 5.28" (134mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from AKST to AKDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from AKDT to AKST.
What are the months with the lowest UV index?
The months with the lowest UV index are March, November and December, with an average maximum UV index of 1.
What month has the most sunshine?
May has the most sunshine of the year in Saint Mary's, with an average of 7.9h of sunshine.
When is the highest UV index?
The months with the highest UV index are May through August, with an average maximum UV index of 3.
What is the least humid month?
June is the least humid month, with an average relative humidity of 66%.
When it does not snow?
June through August are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 19h and 36min of daylight.
What is the warmest month?
July is the warmest month of the year, registering average temperatures as high as 61.5°F (16.4°C) and as low as 47.5°F (8.6°C).
What is the rainiest month?
August is the month with the most rainfall. Rain falls for 17.8 days and accumulates 2.13" (54mm) of precipitation.
What is the month with the shortest days?
With an average of 5h and 18min of daylight, December has the shortest days of the year.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 2.6h of sunshine.
Average temperature
Saint Mary's, AK
The warmest month (with the highest average high temperature) is July (61.5°F).
The month with the lowest average high temperature is January (11.3°F).
The month with the highest average low temperature is July (47.5°F).
The coldest month (with the lowest average low temperature) is January (2.3°F).
Average pressure
Saint Mary's, AK
- Average pressure in January:
29.75"Hg - Average pressure in February:
29.81"Hg - Average pressure in March:
29.85"Hg - Average pressure in April:
29.8"Hg - Average pressure in May:
29.9"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.83"Hg - Average pressure in September:
29.72"Hg - Average pressure in October:
29.67"Hg - Average pressure in November:
29.72"Hg - Average pressure in December:
29.67"Hg
The month with the highest atmospheric pressure is July (29.91"Hg).
The months with the lowest atmospheric pressure are October and December (29.67"Hg).
Average wind speed
Saint Mary's, AK
- Average wind speed in January:
11.5mph - Average wind speed in February:
11.9mph - Average wind speed in March:
10.4mph - Average wind speed in April:
9.8mph - Average wind speed in May:
9.4mph - Average wind speed in June:
9.3mph
- Average wind speed in July:
8.9mph - Average wind speed in August:
9.2mph - Average wind speed in September:
10.2mph - Average wind speed in October:
11.3mph - Average wind speed in November:
11.2mph - Average wind speed in December:
11.4mph
The windiest month (with the highest average wind speed) is February (11.9mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).
Average humidity
Saint Mary's, AK
The months with the highest relative humidity are January, February, March and December (91%).
The month with the lowest relative humidity is June (66%).
Average rainfall
Saint Mary's, AK
- Average rainfall in January:
0.87" - Average rainfall in February:
1.54" - Average rainfall in March:
0.94" - Average rainfall in April:
0.94" - Average rainfall in May:
0.94" - Average rainfall in June:
0.87"
- Average rainfall in July:
1.69" - Average rainfall in August:
2.13" - Average rainfall in September:
1.77" - Average rainfall in October:
1.61" - Average rainfall in November:
1.3" - Average rainfall in December:
1.14"
The wettest month (with the highest rainfall) is August (2.13").
The driest months (with the least rainfall) are January and June (0.87").
Average rainfall days
Saint Mary's, AK
- Average rainfall days in January:
2.4 days - Average rainfall days in February:
2.4 days - Average rainfall days in March:
2.9 days - Average rainfall days in April:
5.8 days - Average rainfall days in May:
11.8 days - Average rainfall days in June:
11.7 days
- Average rainfall days in July:
17.4 days - Average rainfall days in August:
17.8 days - Average rainfall days in September:
14.5 days - Average rainfall days in October:
10.8 days - Average rainfall days in November:
4.3 days - Average rainfall days in December:
2.7 days
The month with the highest number of rainy days is August (17.8 days).
The months with the least rainy days are January and February (2.4 days).
Average snowfall
Saint Mary's, AK
- Average snowfall in January:
2.72" - Average snowfall in February:
5.28" - Average snowfall in March:
2.95" - Average snowfall in April:
2.44" - Average snowfall in May:
0.55" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.28").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Saint Mary's, AK
- Average snowfall days in January:
10.1 days - Average snowfall days in February:
11.4 days - Average snowfall days in March:
9.3 days - Average snowfall days in April:
9.5 days - Average snowfall days in May:
3.4 days - Average snowfall days in June:
0.3 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.8 days - Average snowfall days in October:
5.9 days - Average snowfall days in November:
10.2 days - Average snowfall days in December:
10.5 days
The month with the highest number of snowfall days is February (11.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Saint Mary's, AK
- Average daylight in January:
6h and 2min - Average daylight in February:
9h and 0min - Average daylight in March:
11h and 5min - Average daylight in April:
14h and 5min - Average daylight in May:
17h and 5min - Average daylight in June:
19h and 4min
- Average daylight in July:
18h and 4min - Average daylight in August:
15h and 5min - Average daylight in September:
12h and 5min - Average daylight in October:
9h and 5min - Average daylight in November:
7h and 0min - Average daylight in December:
5h and 2min
The month with the longest days is June (Average daylight: 19h and 36min).
The month with the shortest days is December (Average daylight: 5h and 18min).
- Average sunshine in January:
2h and 5min - Average sunshine in February:
3h and 2min - Average sunshine in March:
4h and 5min - Average sunshine in April:
5h and 3min - Average sunshine in May:
7h and 5min - Average sunshine in June:
7h and 4min
- Average sunshine in July:
5h and 3min - Average sunshine in August:
5h and 4min - Average sunshine in September:
4h and 3min - Average sunshine in October:
4h and 2min - Average sunshine in November:
2h and 4min - Average sunshine in December:
2h and 4min
The month with the most sunshine is May (Average sunshine: 7h and 54min).
The month with the least sunshine is December (Average sunshine: 2h and 36min).
Average sunshine days
Saint Mary's, AK
- Average sunshine days in January:
18.6 days - Average sunshine days in February:
14.7 days - Average sunshine days in March:
19.5 days - Average sunshine days in April:
14.8 days - Average sunshine days in May:
15.1 days - Average sunshine days in June:
15.3 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
10.9 days - Average sunshine days in September:
12.4 days - Average sunshine days in October:
15.6 days - Average sunshine days in November:
16.8 days - Average sunshine days in December:
17.5 days
The month with the most sunshine days is March (19.5 days).
The month with the least sunshine days is August (10.9 days).
Average UV index
Saint Mary's, AK
The months with the highest UV index are May, June, July and August (UV index 3).
The months with the lowest UV index are March, November and December (UV index 1).
Average cloud cover
Saint Mary's, AK
The month with the most cloud cover is July (Cloud cover 68).
The month with the least cloud cover is June (Cloud cover 54).
Average visibility
Saint Mary's, AK
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, November and December (5mi).