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Current weather in St. Marie is overcast clouds.

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Weather data for St. Marie is updated regularly with the latest available observations and forecasts.

Now · 1:51 AM

St. Marie Weather & Hourly Forecast

United States · Montana · 59230

59°F

Overcast night

Feels like: 46°F

💧 Humidity 57% 🌡 Pressure 29.77 inHg 💨 Wind 22 mph 👁 Visibility 29.9 mi ☁ Clouds 100% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for St. Marie

Today

2:00 AM

Overcast night

59° 💧 None 💨 23 mph H 64%29.77 inHg

5:00 AM

Partly cloudy night

57° 💧 0.004 in 💨 22 mph H 77%29.83 inHg

8:00 AM

Mostly cloudy

57° 💧 0.002 in 💨 16 mph H 84%29.91 inHg

11:00 AM

Overcast

64° 💧 None 💨 20 mph H 61%29.97 inHg

2:00 PM

Overcast

66° 💧 0.002 in 💨 18 mph H 56%29.97 inHg

5:00 PM

Mostly sunny

65° 💧 0.031 in 💨 16 mph H 63%30.00 inHg

8:00 PM

Light rain

56° 💧 0.016 in 💨 12 mph H 89%30.06 inHg

11:00 PM

Light rain

54° 💧 0.069 in 💨 12 mph H 93%30.12 inHg

Tomorrow

2:00 AM

Clear night

52° 💧 None 💨 9 mph H 92%30.09 inHg

5:00 AM

Clear night

50° 💧 None 💨 7 mph H 90%30.12 inHg

8:00 AM

Mostly sunny

53° 💧 None 💨 8 mph H 81%30.12 inHg

11:00 AM

Partly cloudy

63° 💧 None 💨 11 mph H 56%30.12 inHg

2:00 PM

Sunny

72° 💧 None 💨 13 mph H 39%30.03 inHg

5:00 PM

Mostly sunny

74° 💧 None 💨 12 mph H 34%29.97 inHg

8:00 PM

Clear night

65° 💧 None 💨 9 mph H 46%29.94 inHg

11:00 PM

Clear night

59° 💧 None 💨 4 mph H 61%29.94 inHg

Today

2:00 AM

Overcast night

59° 💧 None 💨 23 mph H 64%29.77 inHg

3:00 AM

Overcast night

58° 💧 None 💨 23 mph H 67%29.77 inHg

4:00 AM

Overcast night

58° 💧 None 💨 24 mph H 70%29.80 inHg

5:00 AM

Partly cloudy night

57° 💧 None 💨 22 mph H 77%29.83 inHg

6:00 AM

Overcast night

56° 💧 0.001 in 💨 19 mph H 84%29.85 inHg

7:00 AM

Overcast

56° 💧 0.003 in 💨 18 mph H 86%29.88 inHg

8:00 AM

Mostly cloudy

57° 💧 0.002 in 💨 16 mph H 84%29.91 inHg

9:00 AM

Partly cloudy

59° 💧 0.000 in 💨 21 mph H 73%29.94 inHg

10:00 AM

Mostly cloudy

62° 💧 0.000 in 💨 20 mph H 66%29.94 inHg

11:00 AM

Overcast

64° 💧 None 💨 20 mph H 61%29.97 inHg

12:00 PM

Overcast

65° 💧 None 💨 19 mph H 59%29.97 inHg

1:00 PM

Overcast

66° 💧 None 💨 19 mph H 56%29.97 inHg

2:00 PM

Overcast

66° 💧 None 💨 18 mph H 56%29.97 inHg

3:00 PM

Overcast

67° 💧 None 💨 18 mph H 56%29.97 inHg

4:00 PM

Mostly sunny

65° 💧 0.002 in 💨 17 mph H 61%29.97 inHg

5:00 PM

Mostly sunny

65° 💧 0.001 in 💨 16 mph H 63%30.00 inHg

6:00 PM

Mostly cloudy

63° 💧 0.002 in 💨 16 mph H 66%30.00 inHg

7:00 PM

Light thunderstorms

57° 💧 0.029 in 💨 12 mph H 88%30.03 inHg

8:00 PM

Light rain

56° 💧 0.006 in 💨 12 mph H 89%30.06 inHg

9:00 PM

Light rain

55° 💧 0.005 in 💨 11 mph H 93%30.09 inHg

10:00 PM

Light rain

55° 💧 0.005 in 💨 12 mph H 92%30.09 inHg

11:00 PM

Light rain

54° 💧 0.063 in 💨 12 mph H 93%30.12 inHg

Tomorrow

12:00 AM

Light rain

54° 💧 0.006 in 💨 10 mph H 93%30.12 inHg

1:00 AM

Clear night

53° 💧 0.000 in 💨 9 mph H 93%30.12 inHg

2:00 AM

Clear night

52° 💧 None 💨 9 mph H 92%30.09 inHg

3:00 AM

Clear night

51° 💧 None 💨 8 mph H 91%30.12 inHg

4:00 AM

Clear night

51° 💧 None 💨 8 mph H 90%30.12 inHg

5:00 AM

Clear night

50° 💧 None 💨 7 mph H 90%30.12 inHg

6:00 AM

Clear night

50° 💧 None 💨 7 mph H 90%30.12 inHg

7:00 AM

Sunny

50° 💧 None 💨 6 mph H 89%30.12 inHg

8:00 AM

Mostly sunny

53° 💧 None 💨 8 mph H 81%30.12 inHg

9:00 AM

Mostly cloudy

57° 💧 None 💨 9 mph H 69%30.15 inHg

10:00 AM

Overcast

60° 💧 None 💨 10 mph H 62%30.12 inHg

11:00 AM

Partly cloudy

63° 💧 None 💨 11 mph H 56%30.12 inHg

12:00 PM

Sunny

67° 💧 None 💨 11 mph H 48%30.09 inHg

1:00 PM

Sunny

70° 💧 None 💨 12 mph H 43%30.06 inHg

2:00 PM

Sunny

72° 💧 None 💨 13 mph H 39%30.03 inHg

3:00 PM

Mostly sunny

74° 💧 None 💨 12 mph H 37%30.00 inHg

4:00 PM

Sunny

74° 💧 None 💨 12 mph H 35%29.97 inHg

5:00 PM

Mostly sunny

74° 💧 None 💨 12 mph H 34%29.97 inHg

6:00 PM

Mostly sunny

72° 💧 None 💨 13 mph H 35%29.94 inHg

7:00 PM

Sunny

68° 💧 None 💨 10 mph H 41%29.94 inHg

8:00 PM

Clear night

65° 💧 None 💨 9 mph H 46%29.94 inHg

9:00 PM

Clear night

62° 💧 None 💨 6 mph H 53%29.97 inHg

10:00 PM

Mostly clear night

60° 💧 None 💨 4 mph H 58%29.94 inHg

11:00 PM

Clear night

59° 💧 None 💨 4 mph H 61%29.94 inHg

Thursday

12:00 AM

Clear night

57° 💧 None 💨 5 mph H 63%29.94 inHg

1:00 AM

Clear night

57° 💧 None 💨 6 mph H 63%29.91 inHg

2:00 AM

Clear night

56° 💧 None 💨 5 mph H 67%29.91 inHg

3:00 AM

Clear night

55° 💧 None 💨 4 mph H 70%29.88 inHg

4:00 AM

Clear night

55° 💧 None 💨 5 mph H 68%29.88 inHg

5:00 AM

Clear night

54° 💧 None 💨 5 mph H 66%29.88 inHg

6:00 AM

Clear night

54° 💧 None 💨 6 mph H 66%29.85 inHg

7:00 AM

Sunny

54° 💧 None 💨 5 mph H 66%29.85 inHg

8:00 AM

Mostly sunny

59° 💧 None 💨 6 mph H 58%29.83 inHg

9:00 AM

Mostly sunny

63° 💧 None 💨 7 mph H 52%29.83 inHg

10:00 AM

Sunny

66° 💧 None 💨 8 mph H 46%29.80 inHg

11:00 AM

Sunny

71° 💧 None 💨 9 mph H 40%29.77 inHg

12:00 PM

Mostly sunny

75° 💧 None 💨 10 mph H 34%29.74 inHg

1:00 PM

Sunny

78° 💧 None 💨 15 mph H 26%29.71 inHg

2:00 PM

Sunny

79° 💧 None 💨 16 mph H 26%29.68 inHg

3:00 PM

Sunny

80° 💧 None 💨 14 mph H 27%29.68 inHg

4:00 PM

Sunny

81° 💧 None 💨 13 mph H 28%29.65 inHg

5:00 PM

Sunny

80° 💧 None 💨 13 mph H 29%29.62 inHg

6:00 PM

Sunny

78° 💧 None 💨 11 mph H 34%29.62 inHg

9:00 PM

Mostly clear night

67° 💧 None 💨 8 mph H 49%29.65 inHg

Friday

12:00 AM

Clear night

60° 💧 None 💨 4 mph H 69%29.62 inHg

3:00 AM

Mostly cloudy night

56° 💧 None 💨 7 mph H 85%29.62 inHg

6:00 AM

Partly cloudy night

54° 💧 None 💨 8 mph H 95%29.62 inHg

9:00 AM

Moderate rain

53° 💧 None 💨 14 mph H 87%29.68 inHg

12:00 PM

Overcast

54° 💧 None 💨 14 mph H 67%29.77 inHg

3:00 PM

Overcast

54° 💧 None 💨 17 mph H 57%29.85 inHg

6:00 PM

Overcast

56° 💧 None 💨 17 mph H 56%29.88 inHg

9:00 PM

Mostly clear night

53° 💧 None 💨 12 mph H 62%29.94 inHg

Saturday

12:00 AM

Clear night

48° 💧 None 💨 12 mph H 80%30.00 inHg

3:00 AM

Clear night

45° 💧 None 💨 8 mph H 89%30.06 inHg

6:00 AM

Partly cloudy night

43° 💧 None 💨 9 mph H 92%30.12 inHg

9:00 AM

Mostly cloudy

47° 💧 None 💨 12 mph H 75%30.18 inHg

12:00 PM

Overcast

54° 💧 None 💨 11 mph H 54%30.15 inHg

3:00 PM

Partly cloudy

57° 💧 None 💨 9 mph H 44%30.09 inHg

6:00 PM

Mostly cloudy

55° 💧 None 💨 9 mph H 45%30.06 inHg

9:00 PM

Mostly cloudy night

49° 💧 None 💨 8 mph H 61%30.12 inHg

Sunday

12:00 AM

Overcast night

48° 💧 None 💨 11 mph H 68%30.15 inHg

3:00 AM

Overcast night

45° 💧 None 💨 12 mph H 76%30.12 inHg

6:00 AM

Overcast night

45° 💧 None 💨 12 mph H 77%30.12 inHg

9:00 AM

Light rain

46° 💧 None 💨 12 mph H 81%30.12 inHg

12:00 PM

Overcast

50° 💧 None 💨 17 mph H 75%30.09 inHg

6:00 PM

Light rain

51° 💧 None 💨 18 mph H 90%29.94 inHg

Monday

12:00 AM

Light rain

52° 💧 None 💨 16 mph H 92%29.88 inHg

6:00 AM

Moderate rain

51° 💧 None 💨 13 mph H 95%29.83 inHg

12:00 PM

Light rain

49° 💧 None 💨 15 mph H 94%29.85 inHg

6:00 PM

Light rain

54° 💧 None 💨 18 mph H 73%29.94 inHg

Tuesday

12:00 AM

Mostly clear night

59° 💧 None 💨 13 mph H 45%29.94 inHg

6:00 AM

Clear night

49° 💧 None 💨 8 mph H 63%30.00 inHg

12:00 PM

Mostly sunny

44° 💧 None 💨 6 mph H 83%30.15 inHg

6:00 PM

Partly cloudy

59° 💧 None 💨 5 mph H 56%30.18 inHg

Wednesday

12:00 AM

Partly cloudy night

61° 💧 None 💨 7 mph H 49%30.12 inHg

6:00 AM

Mostly cloudy night

51° 💧 None 💨 13 mph H 70%30.15 inHg

12:00 PM

Partly cloudy

48° 💧 None 💨 15 mph H 79%30.06 inHg

6:00 PM

Sunny

64° 💧 None 💨 17 mph H 52%29.97 inHg

Thursday

12:00 AM

Mostly cloudy night

68° 💧 None 💨 7 mph H 57%29.91 inHg

6:00 AM

Mostly clear night

54° 💧 None 💨 8 mph H 90%30.03 inHg

12:00 PM

Overcast

49° 💧 None 💨 17 mph H 97%30.24 inHg

6:00 PM

Overcast

55° 💧 None 💨 14 mph H 70%30.39 inHg

Friday

12:00 AM

Overcast night

55° 💧 None 💨 12 mph H 65%30.36 inHg

6:00 AM

Overcast night

48° 💧 None 💨 7 mph H 82%30.36 inHg

12:00 PM

Mostly sunny

46° 💧 None 💨 5 mph H 88%30.33 inHg

6:00 PM

Overcast

58° 💧 None 💨 7 mph H 64%30.21 inHg

Saturday

12:00 AM

Overcast night

60° 💧 None 💨 5 mph H 65%30.12 inHg

6:00 AM

Clear night

52° 💧 None 💨 2 mph H 87%30.06 inHg

12:00 PM

Sunny

47° 💧 None 💨 0 mph H 98%30.03 inHg

6:00 PM

Sunny

66° 💧 None 💨 4 mph H 64%30.03 inHg

Sunday

12:00 AM

Clear night

68° 💧 None 💨 8 mph H 52%30.00 inHg

6:00 AM

Partly cloudy night

52° 💧 None 💨 10 mph H 81%30.09 inHg

12:00 PM

Overcast

49° 💧 None 💨 11 mph H 89%30.09 inHg

6:00 PM

Mostly cloudy

61° 💧 None 💨 15 mph H 65%30.03 inHg

Monday

12:00 AM

Mostly clear night

62° 💧 None 💨 15 mph H 63%29.91 inHg

6:00 AM

Overcast night

55° 💧 None 💨 12 mph H 89%29.88 inHg

12:00 PM

Overcast

57° 💧 None 💨 10 mph H 91%29.74 inHg

6:00 PM

Partly cloudy

62° 💧 None 💨 6 mph H 80%29.62 inHg

Tuesday

12:00 AM

Mostly clear night

65° 💧 None 💨 15 mph H 66%29.65 inHg

6:00 AM

Partly cloudy night

52° 💧 None 💨 11 mph H 91%29.83 inHg

12:00 PM

Mostly sunny

47° 💧 None 💨 5 mph H 95%29.94 inHg

In St. Marie and, more broadly, across the state of Montana: The evening will be mostly sunny with just a few clouds overhead. Temperatures will remain cool, settling around 50 degrees Fahrenheit. Expect moderate west winds, with speeds reaching up to 16 mph and gusts possibly hitting 29 mph. No precipitation is expected during the night. The conditions will be fairly stable, with no significant weather changes anticipated in the coming hours. It's a good idea to have a light jacket handy if you're heading outdoors, especially with the breezy conditions. Overall, the evening looks to be clear and comfortable, with just a slight chill in the air.

15-Day Weather Outlook for St. Marie

TomorrowTomorrow

Light thunderstorms 74°/50° 💧 None 💨 16 mph

Thursday, Sep 10Thu Sep 10

Mostly sunny 81°/54° 💧 None 💨 16 mph

Friday, Sep 11Fri Sep 11

Moderate rain 78°/53° 💧 0.179 in 💨 17 mph

Saturday, Sep 12Sat Sep 12

Overcast 57°/43° 💧 None 💨 17 mph

Sunday, Sep 13Sun Sep 13

Light rain 55°/45° 💧 0.046 in 💨 17 mph

Monday, Sep 14Mon Sep 14

Moderate rain 52°/49° 💧 2.061 in 💨 18 mph

Tuesday, Sep 15Tue Sep 15

Light rain 59°/44° 💧 0.045 in 💨 18 mph

Wednesday, Sep 16Wed Sep 16

Partly cloudy 61°/48° 💧 None 💨 15 mph

Thursday, Sep 17Thu Sep 17

Mostly cloudy 68°/49° 💧 None 💨 17 mph

Friday, Sep 18Fri Sep 18

Overcast 55°/46° 💧 0.001 in 💨 14 mph

Saturday, Sep 19Sat Sep 19

Overcast 60°/47° 💧 None 💨 7 mph

Sunday, Sep 20Sun Sep 20

Partly cloudy 68°/49° 💧 None 💨 11 mph

Monday, Sep 21Mon Sep 21

Overcast 62°/55° 💧 0.006 in 💨 15 mph

Tuesday, Sep 22Tue Sep 22

Mostly sunny 65°/47° 💧 0.091 in 💨 15 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in St. Marie

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for St. Marie

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 2:00 AM

PM2.5 Fine particles Good 0,5µg/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 1,3µg/m³

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

O₃ Ozone Fair 78,3µg/m³

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

NO₂ Nitrogen dioxide Good 0,4µg/m³

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

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in St. Marie

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 1,9Low 🙂Fair

Tomorrow UV 4,3Moderate 🙂Fair

Thursday UV 5,6Moderate 😐Moderate

Friday UV 2,7Low 🙂Fair

Saturday UV 3,0Moderate 😊Good

Sunday UV 3,0Moderate —Unavailable

Monday UV 4,0Moderate —Unavailable

Hourly UV index today

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

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.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

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 Forecast for St. Marie

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ST. MARIE, MONTANA

Tonight's Stargazing & Shooting Stars

Fair observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

58/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 9:26 PM–4:43 AM

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

☾ Moonlight 12% Waning Crescent · Moon about 14° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 81° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min59%

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

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Forecast data for St. Marie were last refreshed today at 1:08 AM. The current forecast period extends through 09/09/2026 at 11:00 PM. 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.