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

Now · 5:03 PM

St. Xavier Weather & Hourly Forecast

United States · Montana · 59075

89°F

Mostly sunny

Feels like: 79°F

💧 Humidity 12% 🌡 Pressure 29.65 inHg 💨 Wind 10 mph 👁 Visibility 32.3 mi ☁ Clouds 35% ☀️ UV index 1.6 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for St. Xavier

Today

6:00 PM

Mostly cloudy

86° 💧 None 💨 10 mph H 14%29.65 inHg

9:00 PM

Mostly clear night

73° 💧 None 💨 5 mph H 29%29.65 inHg

Tomorrow

12:00 AM

Mostly clear night

70° 💧 None 💨 6 mph H 21%29.65 inHg

3:00 AM

Mostly clear night

65° 💧 None 💨 9 mph H 39%29.71 inHg

6:00 AM

Clear night

57° 💧 None 💨 3 mph H 60%29.80 inHg

9:00 AM

Mostly sunny

63° 💧 None 💨 9 mph H 59%29.83 inHg

12:00 PM

Mostly sunny

68° 💧 None 💨 12 mph H 50%29.85 inHg

3:00 PM

Partly cloudy

70° 💧 0.000 in 💨 11 mph H 38%29.83 inHg

6:00 PM

Light rain

65° 💧 0.021 in 💨 11 mph H 50%29.88 inHg

9:00 PM

Partly cloudy night

59° 💧 0.009 in 💨 6 mph H 62%30.00 inHg

Saturday

12:00 AM

Light rain

55° 💧 0.040 in 💨 3 mph H 83%30.03 inHg

3:00 AM

Light rain

53° 💧 0.029 in 💨 5 mph H 90%30.06 inHg

6:00 AM

Mostly cloudy night

52° 💧 None 💨 6 mph H 81%30.09 inHg

9:00 AM

Mostly cloudy

56° 💧 None 💨 7 mph H 62%30.09 inHg

12:00 PM

Overcast

66° 💧 None 💨 7 mph H 43%30.03 inHg

3:00 PM

Overcast

72° 💧 None 💨 4 mph H 36%29.91 inHg

Today

6:00 PM

Mostly cloudy

86° 💧 None 💨 10 mph H 14%29.65 inHg

7:00 PM

Mostly cloudy

82° 💧 None 💨 5 mph H 18%29.62 inHg

8:00 PM

Mostly cloudy night

76° 💧 None 💨 5 mph H 24%29.62 inHg

9:00 PM

Mostly clear night

73° 💧 None 💨 5 mph H 29%29.65 inHg

10:00 PM

Mostly clear night

71° 💧 None 💨 6 mph H 31%29.65 inHg

11:00 PM

Mostly clear night

73° 💧 None 💨 8 mph H 20%29.65 inHg

Tomorrow

12:00 AM

Mostly clear night

70° 💧 None 💨 6 mph H 21%29.65 inHg

1:00 AM

Clear night

68° 💧 None 💨 4 mph H 24%29.65 inHg

2:00 AM

Mostly clear night

66° 💧 None 💨 11 mph H 29%29.68 inHg

3:00 AM

Mostly clear night

65° 💧 None 💨 9 mph H 39%29.71 inHg

4:00 AM

Mostly clear night

61° 💧 None 💨 4 mph H 50%29.74 inHg

5:00 AM

Clear night

59° 💧 None 💨 3 mph H 57%29.77 inHg

6:00 AM

Clear night

57° 💧 None 💨 3 mph H 60%29.80 inHg

7:00 AM

Sunny

56° 💧 None 💨 3 mph H 64%29.80 inHg

8:00 AM

Partly cloudy

60° 💧 None 💨 7 mph H 58%29.83 inHg

9:00 AM

Mostly sunny

63° 💧 None 💨 9 mph H 59%29.83 inHg

10:00 AM

Sunny

65° 💧 None 💨 9 mph H 56%29.83 inHg

11:00 AM

Sunny

67° 💧 None 💨 13 mph H 54%29.83 inHg

12:00 PM

Mostly sunny

68° 💧 None 💨 12 mph H 50%29.85 inHg

1:00 PM

Mostly cloudy

70° 💧 None 💨 10 mph H 44%29.85 inHg

2:00 PM

Mostly cloudy

70° 💧 None 💨 11 mph H 42%29.83 inHg

3:00 PM

Partly cloudy

70° 💧 None 💨 11 mph H 38%29.83 inHg

4:00 PM

Mostly cloudy

71° 💧 None 💨 11 mph H 36%29.83 inHg

5:00 PM

Partly cloudy

68° 💧 0.000 in 💨 11 mph H 41%29.85 inHg

6:00 PM

Light rain

65° 💧 0.007 in 💨 11 mph H 50%29.88 inHg

7:00 PM

Light rain

62° 💧 0.010 in 💨 11 mph H 61%29.91 inHg

8:00 PM

Light rain

60° 💧 0.004 in 💨 9 mph H 65%29.97 inHg

9:00 PM

Partly cloudy night

59° 💧 None 💨 6 mph H 62%30.00 inHg

10:00 PM

Mostly cloudy night

57° 💧 None 💨 5 mph H 65%30.00 inHg

11:00 PM

Light rain

56° 💧 0.009 in 💨 5 mph H 77%30.03 inHg

Saturday

12:00 AM

Light rain

55° 💧 0.012 in 💨 3 mph H 83%30.03 inHg

1:00 AM

Light rain

55° 💧 0.013 in 💨 4 mph H 86%30.06 inHg

2:00 AM

Light rain

54° 💧 0.015 in 💨 5 mph H 89%30.06 inHg

3:00 AM

Light rain

53° 💧 0.008 in 💨 5 mph H 90%30.06 inHg

4:00 AM

Light rain

53° 💧 0.019 in 💨 5 mph H 89%30.06 inHg

5:00 AM

Mostly cloudy night

52° 💧 0.002 in 💨 5 mph H 87%30.09 inHg

6:00 AM

Mostly cloudy night

52° 💧 None 💨 6 mph H 81%30.09 inHg

7:00 AM

Overcast

52° 💧 None 💨 7 mph H 78%30.09 inHg

8:00 AM

Overcast

54° 💧 None 💨 7 mph H 71%30.09 inHg

9:00 AM

Mostly cloudy

56° 💧 None 💨 7 mph H 62%30.09 inHg

10:00 AM

Mostly cloudy

60° 💧 None 💨 7 mph H 53%30.09 inHg

11:00 AM

Mostly cloudy

63° 💧 None 💨 7 mph H 48%30.06 inHg

12:00 PM

Overcast

66° 💧 None 💨 7 mph H 43%30.03 inHg

1:00 PM

Mostly cloudy

68° 💧 None 💨 7 mph H 42%30.00 inHg

2:00 PM

Partly cloudy

69° 💧 None 💨 5 mph H 40%29.97 inHg

3:00 PM

Overcast

72° 💧 None 💨 4 mph H 36%29.91 inHg

4:00 PM

Mostly cloudy

73° 💧 None 💨 4 mph H 34%29.91 inHg

5:00 PM

Overcast

73° 💧 None 💨 7 mph H 34%29.88 inHg

6:00 PM

Mostly cloudy

70° 💧 None 💨 12 mph H 37%29.88 inHg

7:00 PM

Mostly cloudy

67° 💧 None 💨 13 mph H 41%29.88 inHg

8:00 PM

Overcast night

65° 💧 None 💨 13 mph H 45%29.91 inHg

9:00 PM

Overcast night

63° 💧 None 💨 12 mph H 49%29.91 inHg

10:00 PM

Overcast night

60° 💧 0.001 in 💨 10 mph H 53%29.94 inHg

11:00 PM

Mostly cloudy night

59° 💧 0.000 in 💨 10 mph H 55%29.94 inHg

Sunday

12:00 AM

Mostly cloudy night

57° 💧 None 💨 10 mph H 60%29.94 inHg

1:00 AM

Mostly cloudy night

55° 💧 None 💨 9 mph H 62%29.94 inHg

2:00 AM

Mostly cloudy night

55° 💧 0.001 in 💨 8 mph H 65%29.91 inHg

3:00 AM

Mostly cloudy night

53° 💧 None 💨 7 mph H 69%29.91 inHg

4:00 AM

Overcast night

54° 💧 None 💨 7 mph H 69%29.91 inHg

5:00 AM

Light rain

52° 💧 0.008 in 💨 6 mph H 78%29.91 inHg

6:00 AM

Light rain

51° 💧 0.022 in 💨 6 mph H 88%29.91 inHg

9:00 AM

Sunny

56° 💧 None 💨 6 mph H 70%29.88 inHg

12:00 PM

Sunny

65° 💧 None 💨 4 mph H 51%29.83 inHg

3:00 PM

Mostly sunny

74° 💧 None 💨 6 mph H 41%29.71 inHg

6:00 PM

Sunny

77° 💧 None 💨 9 mph H 40%29.62 inHg

9:00 PM

Moderate rain

63° 💧 None 💨 9 mph H 71%29.74 inHg

Monday

12:00 AM

Clear night

54° 💧 None 💨 7 mph H 84%29.85 inHg

3:00 AM

Clear night

51° 💧 None 💨 3 mph H 84%29.88 inHg

6:00 AM

Clear night

49° 💧 None 💨 5 mph H 80%29.91 inHg

9:00 AM

Partly cloudy

57° 💧 None 💨 8 mph H 48%29.97 inHg

12:00 PM

Partly cloudy

66° 💧 None 💨 16 mph H 31%29.97 inHg

3:00 PM

Overcast

69° 💧 None 💨 15 mph H 26%29.94 inHg

6:00 PM

Sunny

66° 💧 None 💨 13 mph H 28%29.97 inHg

9:00 PM

Clear night

56° 💧 None 💨 10 mph H 53%30.09 inHg

Tuesday

12:00 AM

Clear night

51° 💧 None 💨 4 mph H 69%30.15 inHg

3:00 AM

Clear night

50° 💧 None 💨 7 mph H 67%30.12 inHg

6:00 AM

Clear night

48° 💧 None 💨 7 mph H 72%30.12 inHg

9:00 AM

Sunny

55° 💧 None 💨 7 mph H 56%30.12 inHg

12:00 PM

Sunny

68° 💧 None 💨 7 mph H 34%30.03 inHg

3:00 PM

Sunny

74° 💧 None 💨 5 mph H 28%29.91 inHg

6:00 PM

Sunny

74° 💧 None 💨 8 mph H 30%29.85 inHg

9:00 PM

Clear night

64° 💧 None 💨 7 mph H 50%29.88 inHg

Wednesday

12:00 AM

Mostly clear night

57° 💧 None 💨 2 mph H 66%29.88 inHg

3:00 AM

Mostly clear night

52° 💧 None 💨 3 mph H 77%29.91 inHg

6:00 AM

Partly cloudy night

49° 💧 None 💨 3 mph H 84%29.97 inHg

12:00 PM

Mostly sunny

67° 💧 None 💨 7 mph H 44%30.03 inHg

6:00 PM

Partly cloudy

69° 💧 None 💨 14 mph H 40%30.09 inHg

Thursday

12:00 AM

Mostly cloudy night

57° 💧 None 💨 5 mph H 70%30.30 inHg

6:00 AM

Mostly clear night

51° 💧 None 💨 6 mph H 84%30.33 inHg

12:00 PM

Mostly sunny

67° 💧 None 💨 8 mph H 46%30.24 inHg

6:00 PM

Mostly cloudy

76° 💧 None 💨 8 mph H 35%30.03 inHg

Friday

12:00 AM

Partly cloudy night

60° 💧 None 💨 1 mph H 68%30.03 inHg

6:00 AM

Mostly cloudy night

56° 💧 None 💨 3 mph H 84%30.09 inHg

12:00 PM

Mostly sunny

67° 💧 None 💨 8 mph H 60%30.15 inHg

6:00 PM

Mostly sunny

66° 💧 None 💨 1 mph H 67%30.12 inHg

Saturday

12:00 AM

Clear night

56° 💧 None 💨 1 mph H 93%30.18 inHg

6:00 AM

Clear night

52° 💧 None 💨 0 mph H 95%30.24 inHg

12:00 PM

Sunny

70° 💧 None 💨 4 mph H 41%30.21 inHg

6:00 PM

Sunny

73° 💧 None 💨 7 mph H 25%30.06 inHg

Sunday

12:00 AM

Mostly cloudy night

58° 💧 None 💨 6 mph H 52%30.06 inHg

6:00 AM

Partly cloudy night

51° 💧 None 💨 3 mph H 69%30.00 inHg

12:00 PM

Partly cloudy

74° 💧 None 💨 2 mph H 30%29.88 inHg

6:00 PM

Overcast

80° 💧 None 💨 2 mph H 28%29.74 inHg

Monday

12:00 AM

Overcast night

68° 💧 None 💨 10 mph H 44%29.83 inHg

6:00 AM

Mostly clear night

60° 💧 None 💨 7 mph H 68%29.91 inHg

12:00 PM

Sunny

76° 💧 None 💨 8 mph H 33%29.94 inHg

6:00 PM

Sunny

79° 💧 None 💨 7 mph H 23%29.91 inHg

Tuesday

12:00 AM

Clear night

58° 💧 None 💨 4 mph H 60%29.94 inHg

6:00 AM

Clear night

52° 💧 None 💨 4 mph H 65%29.91 inHg

12:00 PM

Sunny

81° 💧 None 💨 3 mph H 20%29.85 inHg

6:00 PM

Sunny

85° 💧 None 💨 2 mph H 18%29.74 inHg

Wednesday

12:00 AM

Mostly cloudy night

64° 💧 None 💨 5 mph H 43%29.83 inHg

6:00 AM

Mostly cloudy night

56° 💧 None 💨 1 mph H 66%29.85 inHg

12:00 PM

Overcast

70° 💧 None 💨 10 mph H 50%29.91 inHg

6:00 PM

Overcast

71° 💧 None 💨 11 mph H 41%29.97 inHg

Thursday

12:00 AM

Overcast night

60° 💧 None 💨 3 mph H 65%30.12 inHg

6:00 AM

Overcast night

56° 💧 None 💨 3 mph H 78%30.21 inHg

12:00 PM

Partly cloudy

69° 💧 None 💨 4 mph H 50%30.24 inHg

6:00 PM

Partly cloudy

72° 💧 None 💨 9 mph H 45%30.15 inHg

Friday

12:00 AM

Clear night

60° 💧 None 💨 5 mph H 70%30.18 inHg

6:00 AM

Clear night

56° 💧 None 💨 6 mph H 92%30.12 inHg

In St. Xavier and, more broadly, across the state of Montana: The afternoon will feature mostly sunny skies with just a few clouds drifting through. Temperatures will remain mild, ranging from the low 60s to mid-70s. Expect a noticeable west wind, averaging around 15 to 20 mph, with gusts reaching up to 30 mph. As evening approaches, skies will stay mostly clear, and the wind will gradually ease. Temperatures will dip into the upper 50s to low 60s overnight, providing a comfortable end to the day. No precipitation is anticipated, so outdoor plans should be unaffected. Overall, it looks like a pleasant evening with mild temperatures and breezy conditions.

15-Day Weather Outlook for St. Xavier

TomorrowTomorrow

Mostly cloudy 86°/56° 💧 None 💨 13 mph

Saturday, Sep 12Sat Sep 12

Partly cloudy 73°/52° 💧 None 💨 11 mph

Sunday, Sep 13Sun Sep 13

Light rain 74°/51° 💧 0.160 in 💨 13 mph

Monday, Sep 14Mon Sep 14

Moderate rain 77°/49° 💧 0.038 in 💨 16 mph

Tuesday, Sep 15Tue Sep 15

Sunny 74°/48° 💧 0.000 in 💨 13 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 74°/49° 💧 None 💨 8 mph

Thursday, Sep 17Thu Sep 17

Partly cloudy 69°/51° 💧 None 💨 14 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 76°/56° 💧 0.035 in 💨 8 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 70°/52° 💧 0.058 in 💨 4 mph

Sunday, Sep 20Sun Sep 20

Mostly cloudy 74°/51° 💧 None 💨 7 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 80°/60° 💧 0.002 in 💨 10 mph

Tuesday, Sep 22Tue Sep 22

Sunny 81°/52° 💧 0.001 in 💨 7 mph

Wednesday, Sep 23Wed Sep 23

Mostly cloudy 85°/56° 💧 None 💨 10 mph

Thursday, Sep 24Thu Sep 24

Overcast 71°/56° 💧 0.005 in 💨 11 mph

Friday, Sep 25Fri Sep 25

Partly cloudy 72°/56° 💧 None 💨 9 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in St. Xavier

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for St. Xavier

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 6:00 PM

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 2,2µg/m³

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

O₃ Ozone Fair 91,5µg/m³

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

NO₂ Nitrogen dioxide Good 1,1µg/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. Xavier

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 6,6High 🙂Fair

Tomorrow UV 6,0High 🙂Fair

Saturday UV 5,5Moderate 🙂Fair

Sunday UV 5,8Moderate 🙂Fair

Monday UV 5,6Moderate 😐Moderate

Tuesday UV 5,0Moderate —Unavailable

Wednesday UV 6,0High —Unavailable

Hourly UV index today

6:00 PMUV 0,5 7:00 PMUV 0,0

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

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

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

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure. Dry air can increase hydration needs.

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. Xavier

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ST. XAVIER, MONTANA

Tonight's Stargazing & Shooting Stars

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

99/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 9:14 PM–5:02 AM

☁ Cloud cover 1% Real hourly forecast for the best viewing hour.

☾ Moonlight 0% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 85° high at the best hour.

✦ Estimated visible meteors 2–5/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min81%

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.

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Forecast data for St. Xavier were last refreshed today at 5:03 PM. The current forecast period extends through 12/09/2026 at 3:00 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.