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Current weather in St. Mary's is overcast clouds.

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Weather data for St. Mary's is updated regularly with the latest available observations and forecasts.

Now · 7:04 AM

St. Mary's Weather & Hourly Forecast

United States · Alaska · 99658

50°F

Overcast

Feels like: 48°F

💧 Humidity 97% 🌡 Pressure 29.59 inHg 💨 Wind 3 mph 👁 Visibility 8.9 mi ☁ Clouds 100% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Weather Forecast for St. Mary's

Today

8:00 AM

Overcast

49° 💧 0.003 in 💨 2 mph H 97%29.59 inHg

11:00 AM

Overcast

51° 💧 0.004 in 💨 4 mph H 96%29.56 inHg

2:00 PM

Overcast

53° 💧 0.006 in 💨 6 mph H 89%29.59 inHg

5:00 PM

Overcast

56° 💧 0.009 in 💨 6 mph H 78%29.56 inHg

8:00 PM

Light rain

54° 💧 0.005 in 💨 6 mph H 80%29.56 inHg

11:00 PM

Partly cloudy night

49° 💧 0.000 in 💨 3 mph H 92%29.56 inHg

Tomorrow

2:00 AM

Partly cloudy night

48° 💧 0.002 in 💨 3 mph H 97%29.56 inHg

5:00 AM

Light rain

49° 💧 0.008 in 💨 5 mph H 97%29.62 inHg

8:00 AM

Overcast

49° 💧 0.004 in 💨 9 mph H 98%29.68 inHg

11:00 AM

Overcast

49° 💧 0.004 in 💨 15 mph H 94%29.77 inHg

2:00 PM

Overcast

51° 💧 0.003 in 💨 19 mph H 79%29.88 inHg

5:00 PM

Overcast

53° 💧 0.001 in 💨 17 mph H 67%30.00 inHg

8:00 PM

Partly cloudy

52° 💧 0.000 in 💨 15 mph H 71%30.09 inHg

11:00 PM

Overcast night

49° 💧 None 💨 12 mph H 82%30.18 inHg

Wednesday

2:00 AM

Overcast night

48° 💧 0.001 in 💨 10 mph H 86%30.27 inHg

5:00 AM

Overcast night

48° 💧 0.000 in 💨 10 mph H 89%30.36 inHg

Today

8:00 AM

Overcast

49° 💧 0.001 in 💨 2 mph H 97%29.59 inHg

9:00 AM

Overcast

50° 💧 0.001 in 💨 1 mph H 98%29.59 inHg

10:00 AM

Overcast

50° 💧 0.001 in 💨 3 mph H 97%29.59 inHg

11:00 AM

Overcast

51° 💧 0.001 in 💨 4 mph H 96%29.56 inHg

12:00 PM

Overcast

51° 💧 0.001 in 💨 5 mph H 95%29.56 inHg

1:00 PM

Overcast

52° 💧 0.002 in 💨 5 mph H 93%29.56 inHg

2:00 PM

Overcast

53° 💧 0.002 in 💨 6 mph H 89%29.59 inHg

3:00 PM

Overcast

54° 💧 0.003 in 💨 6 mph H 87%29.56 inHg

4:00 PM

Overcast

55° 💧 0.001 in 💨 6 mph H 82%29.56 inHg

5:00 PM

Overcast

56° 💧 0.002 in 💨 6 mph H 78%29.56 inHg

6:00 PM

Overcast

56° 💧 0.003 in 💨 7 mph H 77%29.56 inHg

7:00 PM

Light rain

56° 💧 0.004 in 💨 7 mph H 77%29.56 inHg

8:00 PM

Light rain

54° 💧 0.004 in 💨 6 mph H 80%29.56 inHg

9:00 PM

Mostly cloudy

53° 💧 0.001 in 💨 3 mph H 87%29.56 inHg

10:00 PM

Partly cloudy night

51° 💧 0.000 in 💨 2 mph H 90%29.56 inHg

11:00 PM

Partly cloudy night

49° 💧 0.000 in 💨 3 mph H 92%29.56 inHg

Tomorrow

12:00 AM

Mostly cloudy night

49° 💧 None 💨 4 mph H 94%29.56 inHg

1:00 AM

Partly cloudy night

48° 💧 None 💨 3 mph H 96%29.56 inHg

2:00 AM

Partly cloudy night

48° 💧 0.000 in 💨 3 mph H 97%29.56 inHg

3:00 AM

Mostly cloudy night

48° 💧 0.000 in 💨 3 mph H 97%29.59 inHg

4:00 AM

Mostly cloudy night

48° 💧 0.001 in 💨 4 mph H 98%29.59 inHg

5:00 AM

Light rain

49° 💧 0.005 in 💨 5 mph H 97%29.62 inHg

6:00 AM

Overcast night

49° 💧 0.002 in 💨 6 mph H 98%29.62 inHg

7:00 AM

Overcast night

49° 💧 0.001 in 💨 8 mph H 98%29.65 inHg

8:00 AM

Overcast

49° 💧 0.001 in 💨 9 mph H 98%29.68 inHg

9:00 AM

Overcast

49° 💧 0.001 in 💨 12 mph H 96%29.68 inHg

10:00 AM

Overcast

49° 💧 0.002 in 💨 14 mph H 95%29.71 inHg

11:00 AM

Overcast

49° 💧 0.001 in 💨 15 mph H 94%29.77 inHg

12:00 PM

Overcast

49° 💧 0.001 in 💨 16 mph H 90%29.80 inHg

1:00 PM

Overcast

50° 💧 0.001 in 💨 18 mph H 86%29.85 inHg

2:00 PM

Overcast

51° 💧 0.001 in 💨 19 mph H 79%29.88 inHg

3:00 PM

Overcast

53° 💧 0.001 in 💨 19 mph H 72%29.91 inHg

4:00 PM

Overcast

53° 💧 0.001 in 💨 18 mph H 67%29.94 inHg

5:00 PM

Overcast

53° 💧 0.001 in 💨 17 mph H 67%30.00 inHg

6:00 PM

Overcast

53° 💧 0.000 in 💨 16 mph H 67%30.03 inHg

7:00 PM

Mostly cloudy

53° 💧 None 💨 16 mph H 67%30.06 inHg

8:00 PM

Partly cloudy

52° 💧 0.000 in 💨 15 mph H 71%30.09 inHg

9:00 PM

Partly cloudy

51° 💧 None 💨 13 mph H 78%30.12 inHg

10:00 PM

Overcast night

49° 💧 None 💨 12 mph H 83%30.15 inHg

11:00 PM

Overcast night

49° 💧 None 💨 12 mph H 82%30.18 inHg

Wednesday

12:00 AM

Overcast night

48° 💧 None 💨 11 mph H 81%30.24 inHg

1:00 AM

Overcast night

48° 💧 None 💨 9 mph H 82%30.24 inHg

2:00 AM

Overcast night

48° 💧 None 💨 10 mph H 86%30.27 inHg

3:00 AM

Overcast night

48° 💧 0.001 in 💨 10 mph H 89%30.30 inHg

4:00 AM

Overcast night

48° 💧 None 💨 11 mph H 89%30.33 inHg

5:00 AM

Overcast night

48° 💧 0.000 in 💨 10 mph H 89%30.36 inHg

6:00 AM

Overcast night

48° 💧 0.000 in 💨 10 mph H 89%30.36 inHg

7:00 AM

Overcast night

49° 💧 None 💨 10 mph H 89%30.39 inHg

8:00 AM

Mostly cloudy night

48° 💧 None 💨 9 mph H 90%30.39 inHg

9:00 AM

Overcast

48° 💧 None 💨 10 mph H 91%30.39 inHg

10:00 AM

Overcast

50° 💧 0.001 in 💨 11 mph H 89%30.39 inHg

11:00 AM

Mostly cloudy

51° 💧 0.001 in 💨 15 mph H 84%30.42 inHg

12:00 PM

Overcast

52° 💧 0.001 in 💨 15 mph H 79%30.42 inHg

1:00 PM

Overcast

53° 💧 0.001 in 💨 17 mph H 76%30.42 inHg

2:00 PM

Overcast

52° 💧 0.001 in 💨 16 mph H 79%30.45 inHg

3:00 PM

Overcast

53° 💧 0.001 in 💨 16 mph H 79%30.45 inHg

4:00 PM

Overcast

52° 💧 0.001 in 💨 15 mph H 82%30.45 inHg

Thursday

1:00 AM

Overcast night

50° 💧 None 💨 9 mph H 89%30.45 inHg

4:00 AM

Overcast night

49° 💧 None 💨 11 mph H 90%30.45 inHg

7:00 AM

Overcast night

49° 💧 None 💨 11 mph H 89%30.42 inHg

10:00 AM

Overcast

50° 💧 None 💨 14 mph H 86%30.39 inHg

1:00 PM

Overcast

52° 💧 None 💨 16 mph H 80%30.36 inHg

4:00 PM

Overcast

53° 💧 None 💨 17 mph H 76%30.33 inHg

7:00 PM

Overcast

52° 💧 None 💨 14 mph H 83%30.24 inHg

10:00 PM

Light rain

51° 💧 None 💨 15 mph H 88%30.18 inHg

Friday

1:00 AM

Light rain

52° 💧 None 💨 17 mph H 94%30.09 inHg

4:00 AM

Light rain

53° 💧 None 💨 16 mph H 99%30.03 inHg

7:00 AM

Overcast night

53° 💧 None 💨 14 mph H 99%29.94 inHg

10:00 AM

Overcast

52° 💧 None 💨 14 mph H 98%29.88 inHg

1:00 PM

Light rain

52° 💧 None 💨 14 mph H 98%29.88 inHg

4:00 PM

Partly cloudy

56° 💧 None 💨 15 mph H 75%29.91 inHg

7:00 PM

Overcast

52° 💧 None 💨 13 mph H 73%29.97 inHg

10:00 PM

Partly cloudy night

49° 💧 None 💨 10 mph H 84%30.00 inHg

Saturday

1:00 AM

Overcast night

49° 💧 None 💨 12 mph H 85%30.03 inHg

4:00 AM

Overcast night

48° 💧 None 💨 12 mph H 87%30.00 inHg

7:00 AM

Partly cloudy night

47° 💧 None 💨 12 mph H 93%30.03 inHg

10:00 AM

Mostly sunny

48° 💧 None 💨 11 mph H 88%30.03 inHg

1:00 PM

Mostly sunny

54° 💧 None 💨 14 mph H 70%30.03 inHg

4:00 PM

Mostly cloudy

57° 💧 None 💨 16 mph H 60%30.03 inHg

7:00 PM

Overcast

54° 💧 None 💨 14 mph H 72%30.00 inHg

10:00 PM

Overcast night

50° 💧 None 💨 12 mph H 80%30.00 inHg

Sunday

4:00 AM

Mostly clear night

48° 💧 None 💨 7 mph H 91%30.15 inHg

10:00 AM

Overcast

45° 💧 None 💨 7 mph H 94%30.18 inHg

4:00 PM

Overcast

45° 💧 None 💨 7 mph H 84%30.21 inHg

10:00 PM

Partly cloudy night

52° 💧 None 💨 5 mph H 63%30.21 inHg

Monday

4:00 AM

Clear night

47° 💧 None 💨 0 mph H 84%30.18 inHg

10:00 AM

Overcast

46° 💧 None 💨 6 mph H 93%30.12 inHg

4:00 PM

Moderate rain

49° 💧 None 💨 10 mph H 99%30.03 inHg

10:00 PM

Moderate rain

54° 💧 None 💨 12 mph H 98%30.00 inHg

Tuesday

4:00 AM

Overcast night

54° 💧 None 💨 14 mph H 96%30.00 inHg

10:00 AM

Overcast

54° 💧 None 💨 15 mph H 87%29.97 inHg

4:00 PM

Overcast

53° 💧 None 💨 18 mph H 85%29.85 inHg

10:00 PM

Overcast night

55° 💧 None 💨 20 mph H 85%29.77 inHg

Wednesday

4:00 AM

Light rain

54° 💧 None 💨 19 mph H 96%29.71 inHg

10:00 AM

Overcast

51° 💧 None 💨 15 mph H 95%29.88 inHg

4:00 PM

Overcast

51° 💧 None 💨 13 mph H 88%30.06 inHg

10:00 PM

Overcast night

56° 💧 None 💨 13 mph H 70%30.18 inHg

Thursday

4:00 AM

Overcast night

51° 💧 None 💨 6 mph H 85%30.21 inHg

10:00 AM

Overcast

48° 💧 None 💨 5 mph H 96%30.24 inHg

4:00 PM

Light rain

48° 💧 None 💨 7 mph H 95%30.24 inHg

10:00 PM

Overcast night

54° 💧 None 💨 8 mph H 79%30.21 inHg

Friday

4:00 AM

Light rain

50° 💧 None 💨 9 mph H 96%30.12 inHg

10:00 AM

Overcast

50° 💧 None 💨 11 mph H 97%30.00 inHg

4:00 PM

Mostly cloudy

49° 💧 None 💨 11 mph H 94%29.88 inHg

10:00 PM

Overcast night

60° 💧 None 💨 13 mph H 64%29.83 inHg

Saturday

4:00 AM

Overcast night

53° 💧 None 💨 9 mph H 86%29.88 inHg

10:00 AM

Overcast

48° 💧 None 💨 6 mph H 95%29.91 inHg

4:00 PM

Overcast

50° 💧 None 💨 6 mph H 95%29.88 inHg

10:00 PM

Light rain

55° 💧 None 💨 8 mph H 85%29.83 inHg

Sunday

4:00 AM

Overcast night

51° 💧 None 💨 6 mph H 90%29.80 inHg

10:00 AM

Overcast

49° 💧 None 💨 7 mph H 94%29.77 inHg

4:00 PM

Mostly cloudy

48° 💧 None 💨 9 mph H 94%29.71 inHg

10:00 PM

Overcast night

60° 💧 None 💨 13 mph H 61%29.68 inHg

Monday

4:00 AM

Overcast night

55° 💧 None 💨 10 mph H 74%29.65 inHg

10:00 AM

Mostly cloudy

51° 💧 None 💨 9 mph H 95%29.65 inHg

4:00 PM

Overcast

50° 💧 None 💨 7 mph H 97%29.62 inHg

10:00 PM

Mostly cloudy night

52° 💧 None 💨 8 mph H 96%29.59 inHg

In St. Mary's and, more broadly, across the state of Alaska: This morning will begin with mostly cloudy skies and cool temperatures, ranging from 53 to 58 degrees Fahrenheit. Light northerly winds at around 5 mph are expected, with occasional gusts up to 10 mph. As the day progresses, the clouds will remain, and there is a chance of light rain, with total accumulation around 0.04 inches. The highest probability of rain is approximately 48%, mainly during the afternoon hours. Throughout the day, wind speeds are expected to stay gentle, providing a relatively calm weather pattern. Be prepared for a cool, overcast day with the possibility of brief light showers.

15-Day Weather Forecast for St. Mary's

TomorrowTomorrow

Overcast 56°/48° 💧 None 💨 19 mph

Wednesday, Sep 9Wed Sep 9

Overcast 53°/48° 💧 None 💨 18 mph

Thursday, Sep 10Thu Sep 10

Overcast 54°/50° 💧 0.332 in 💨 16 mph

Friday, Sep 11Fri Sep 11

Light rain 53°/51° 💧 0.110 in 💨 17 mph

Saturday, Sep 12Sat Sep 12

Mostly cloudy 53°/44° 💧 0.017 in 💨 13 mph

Sunday, Sep 13Sun Sep 13

Overcast 55°/45° 💧 0.004 in 💨 12 mph

Monday, Sep 14Mon Sep 14

Moderate rain 52°/46° 💧 0.209 in 💨 10 mph

Tuesday, Sep 15Tue Sep 15

Moderate rain 54°/53° 💧 0.359 in 💨 18 mph

Wednesday, Sep 16Wed Sep 16

Light rain 55°/51° 💧 0.255 in 💨 20 mph

Thursday, Sep 17Thu Sep 17

Light rain 56°/48° 💧 0.026 in 💨 13 mph

Friday, Sep 18Fri Sep 18

Light rain 54°/49° 💧 0.099 in 💨 11 mph

Saturday, Sep 19Sat Sep 19

Overcast 60°/48° 💧 None 💨 13 mph

Sunday, Sep 20Sun Sep 20

Light rain 55°/48° 💧 0.038 in 💨 9 mph

Monday, Sep 21Mon Sep 21

Overcast 60°/50° 💧 0.030 in 💨 13 mph

Tuesday, Sep 22Tue Sep 22

Mostly cloudy 52°/52° 💧 0.041 in 💨 8 mph

TEMPERATURE OUTLOOK

Hourly Temperature and Weather Conditions in St. Mary's

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality in St. Mary's

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 8:00 AM

PM2.5 Fine particles Good 0,7µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 2,3µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 24,3µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 0,1µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

Sun exposure and health risks in St. Mary's

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 0,6Low 😊Good

Tomorrow UV 1,4Low 🙂Fair

Wednesday UV 1,6Low 🙂Fair

Thursday UV 1,0Low 🙂Fair

Friday UV 3,0Moderate 🙂Fair

Saturday UV 3,0Moderate —Unavailable

Sunday UV 3,0Moderate —Unavailable

Hourly UV index today

8:00 AMUV 0,0 9:00 AMUV 0,0 10:00 AMUV 0,1 11:00 AMUV 0,1 12:00 PMUV 0,1 1:00 PMUV 0,3 2:00 PMUV 0,5 3:00 PMUV 0,4 4:00 PMUV 0,4 5:00 PMUV 0,6 6:00 PMUV 0,6 7:00 PMUV 0,3

Today's weather health advice Open today's recommendations.

Low UV risk

UV radiation will be low, although basic protection is still advisable during prolonged exposure.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Speed in St. Mary's

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ST. MARY'S, ALASKA

Tonight's Stargazing & Shooting Stars

Fair observing conditions. Best local viewing window: 2:00 AM–3:00 AM.

53/100Best-hour score

BEST TIME TONIGHT 2:00 AM–3:00 AM Astronomical darkness: 12:45 AM–5:01 AM

☁ Cloud cover 57% Real hourly forecast for the best viewing hour.

☾ Moonlight 13% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 42° high at the best hour.

✦ Estimated visible meteors 0–2/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min45%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

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Forecast data for St. Mary's were last refreshed today at 7:04 AM. The current forecast period extends through 09/09/2026 at 5:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.