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Current weather in South Glastonbury is clear sky.

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Weather data for South Glastonbury is updated regularly with the latest available observations and forecasts.

Now · 9:20 PM

South Glastonbury Weather & Hourly Forecast

United States · Montana · 59027

54°F

Clear night

Feels like: 46°F

💧 Humidity 31% 🌡 Pressure 29.74 inHg 💨 Wind 6 mph 👁 Visibility 29.7 mi ☁ Clouds 5% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for South Glastonbury

Today

10:00 PM

Mostly clear night

51° 💧 None 💨 4 mph H 39%29.74 inHg

Tomorrow

1:00 AM

Overcast night

46° 💧 0.109 in 💨 3 mph H 70%29.85 inHg

4:00 AM

Sleet

40° 💧 0.272 in 💨 3 mph H 95%29.94 inHg

7:00 AM

Partly cloudy

40° 💧 0.004 in 💨 2 mph H 93%29.94 inHg

10:00 AM

Mostly sunny

49° 💧 None 💨 11 mph H 44%29.97 inHg

1:00 PM

Mostly cloudy

54° 💧 None 💨 11 mph H 36%29.94 inHg

4:00 PM

Partly cloudy

57° 💧 0.000 in 💨 9 mph H 34%29.94 inHg

7:00 PM

Sunny

52° 💧 None 💨 1 mph H 51%30.00 inHg

10:00 PM

Clear night

43° 💧 None 💨 0 mph H 62%30.09 inHg

Tuesday

1:00 AM

Mostly clear night

37° 💧 None 💨 2 mph H 82%30.12 inHg

4:00 AM

Clear night

36° 💧 None 💨 4 mph H 82%30.12 inHg

7:00 AM

Clear night

35° 💧 None 💨 4 mph H 80%30.12 inHg

10:00 AM

Sunny

52° 💧 None 💨 3 mph H 46%30.09 inHg

1:00 PM

Sunny

63° 💧 None 💨 4 mph H 29%29.94 inHg

4:00 PM

Sunny

67° 💧 None 💨 8 mph H 20%29.83 inHg

7:00 PM

Sunny

60° 💧 None 💨 1 mph H 37%29.85 inHg

Today

10:00 PM

Mostly clear night

51° 💧 None 💨 4 mph H 39%29.74 inHg

11:00 PM

Partly cloudy night

48° 💧 None 💨 2 mph H 44%29.74 inHg

Tomorrow

12:00 AM

Overcast night

45° 💧 None 💨 2 mph H 58%29.80 inHg

1:00 AM

Overcast night

46° 💧 None 💨 3 mph H 70%29.85 inHg

2:00 AM

Light rain

45° 💧 0.006 in 💨 4 mph H 86%29.88 inHg

3:00 AM

Snow

42° 💧 0.103 in 💨 4 mph H 93%29.91 inHg

4:00 AM

Sleet

40° 💧 0.116 in 💨 3 mph H 95%29.94 inHg

5:00 AM

Snow

39° 💧 0.139 in 💨 2 mph H 96%29.97 inHg

6:00 AM

Light rain

40° 💧 0.017 in 💨 2 mph H 94%29.97 inHg

7:00 AM

Partly cloudy

40° 💧 0.002 in 💨 2 mph H 93%29.94 inHg

8:00 AM

Sunny

42° 💧 0.002 in 💨 2 mph H 90%29.94 inHg

9:00 AM

Sunny

45° 💧 None 💨 9 mph H 71%29.97 inHg

10:00 AM

Mostly sunny

49° 💧 None 💨 11 mph H 44%29.97 inHg

11:00 AM

Mostly cloudy

51° 💧 None 💨 10 mph H 39%29.97 inHg

12:00 PM

Mostly cloudy

52° 💧 None 💨 11 mph H 39%29.97 inHg

1:00 PM

Mostly cloudy

54° 💧 None 💨 11 mph H 36%29.94 inHg

2:00 PM

Partly cloudy

56° 💧 None 💨 11 mph H 33%29.94 inHg

3:00 PM

Partly cloudy

58° 💧 None 💨 10 mph H 32%29.94 inHg

4:00 PM

Partly cloudy

57° 💧 0.000 in 💨 9 mph H 34%29.94 inHg

5:00 PM

Partly cloudy

57° 💧 None 💨 8 mph H 33%29.94 inHg

6:00 PM

Sunny

55° 💧 None 💨 6 mph H 37%29.97 inHg

7:00 PM

Sunny

52° 💧 None 💨 1 mph H 51%30.00 inHg

8:00 PM

Clear night

49° 💧 None 💨 0 mph H 50%30.03 inHg

9:00 PM

Clear night

46° 💧 None 💨 0 mph H 55%30.06 inHg

10:00 PM

Clear night

43° 💧 None 💨 0 mph H 62%30.09 inHg

11:00 PM

Clear night

40° 💧 None 💨 1 mph H 70%30.12 inHg

Tuesday

12:00 AM

Clear night

38° 💧 None 💨 2 mph H 77%30.12 inHg

1:00 AM

Mostly clear night

37° 💧 None 💨 2 mph H 82%30.12 inHg

2:00 AM

Clear night

36° 💧 None 💨 3 mph H 84%30.12 inHg

3:00 AM

Clear night

36° 💧 None 💨 3 mph H 83%30.12 inHg

4:00 AM

Clear night

36° 💧 None 💨 4 mph H 82%30.12 inHg

5:00 AM

Clear night

35° 💧 None 💨 4 mph H 82%30.12 inHg

6:00 AM

Clear night

35° 💧 None 💨 4 mph H 80%30.12 inHg

7:00 AM

Clear night

35° 💧 None 💨 4 mph H 80%30.12 inHg

8:00 AM

Sunny

38° 💧 None 💨 5 mph H 73%30.12 inHg

9:00 AM

Sunny

46° 💧 None 💨 4 mph H 59%30.12 inHg

10:00 AM

Sunny

52° 💧 None 💨 3 mph H 46%30.09 inHg

11:00 AM

Sunny

56° 💧 None 💨 3 mph H 39%30.03 inHg

12:00 PM

Sunny

60° 💧 None 💨 4 mph H 34%30.00 inHg

1:00 PM

Sunny

63° 💧 None 💨 4 mph H 29%29.94 inHg

2:00 PM

Sunny

66° 💧 None 💨 5 mph H 23%29.91 inHg

3:00 PM

Sunny

67° 💧 None 💨 8 mph H 21%29.85 inHg

4:00 PM

Sunny

67° 💧 None 💨 8 mph H 20%29.83 inHg

5:00 PM

Sunny

67° 💧 None 💨 8 mph H 20%29.83 inHg

6:00 PM

Sunny

65° 💧 None 💨 5 mph H 24%29.83 inHg

7:00 PM

Sunny

60° 💧 None 💨 1 mph H 37%29.85 inHg

8:00 PM

Clear night

53° 💧 None 💨 2 mph H 45%29.88 inHg

9:00 PM

Clear night

50° 💧 None 💨 1 mph H 54%29.94 inHg

10:00 PM

Clear night

48° 💧 None 💨 0 mph H 58%29.94 inHg

11:00 PM

Clear night

46° 💧 None 💨 1 mph H 60%29.97 inHg

Wednesday

12:00 AM

Clear night

44° 💧 None 💨 1 mph H 63%29.97 inHg

1:00 AM

Clear night

42° 💧 None 💨 2 mph H 67%29.97 inHg

2:00 AM

Clear night

40° 💧 None 💨 2 mph H 70%30.00 inHg

3:00 AM

Clear night

39° 💧 None 💨 3 mph H 72%30.00 inHg

4:00 AM

Clear night

38° 💧 None 💨 3 mph H 73%30.00 inHg

5:00 AM

Clear night

38° 💧 None 💨 3 mph H 73%30.03 inHg

6:00 AM

Clear night

38° 💧 None 💨 2 mph H 73%30.06 inHg

3:00 PM

Mostly sunny

62° 💧 None 💨 6 mph H 39%30.09 inHg

6:00 PM

Mostly sunny

60° 💧 None 💨 4 mph H 50%30.09 inHg

9:00 PM

Partly cloudy night

49° 💧 None 💨 0 mph H 73%30.15 inHg

Thursday

12:00 AM

Mostly clear night

44° 💧 None 💨 0 mph H 82%30.18 inHg

3:00 AM

Mostly cloudy night

42° 💧 None 💨 1 mph H 87%30.18 inHg

6:00 AM

Overcast night

42° 💧 None 💨 4 mph H 85%30.18 inHg

9:00 AM

Mostly cloudy

52° 💧 None 💨 4 mph H 73%30.15 inHg

12:00 PM

Sunny

68° 💧 None 💨 4 mph H 41%30.03 inHg

3:00 PM

Partly cloudy

68° 💧 None 💨 7 mph H 41%29.97 inHg

6:00 PM

Mostly sunny

69° 💧 None 💨 4 mph H 40%29.91 inHg

9:00 PM

Partly cloudy night

54° 💧 None 💨 3 mph H 70%29.97 inHg

Friday

12:00 AM

Mostly clear night

49° 💧 None 💨 5 mph H 90%30.03 inHg

3:00 AM

Mostly clear night

45° 💧 None 💨 5 mph H 94%30.03 inHg

6:00 AM

Partly cloudy night

45° 💧 None 💨 3 mph H 92%30.06 inHg

9:00 AM

Mostly cloudy

52° 💧 None 💨 6 mph H 90%30.06 inHg

12:00 PM

Mostly sunny

65° 💧 None 💨 5 mph H 46%30.00 inHg

3:00 PM

Mostly cloudy

69° 💧 None 💨 7 mph H 32%29.91 inHg

6:00 PM

Partly cloudy

59° 💧 None 💨 3 mph H 52%29.97 inHg

9:00 PM

Partly cloudy night

49° 💧 None 💨 1 mph H 83%30.03 inHg

Saturday

12:00 AM

Light rain

44° 💧 None 💨 2 mph H 93%30.09 inHg

3:00 AM

Partly cloudy night

42° 💧 None 💨 3 mph H 93%30.06 inHg

6:00 AM

Mostly clear night

39° 💧 None 💨 3 mph H 97%30.06 inHg

9:00 AM

Mostly sunny

46° 💧 None 💨 4 mph H 90%30.06 inHg

12:00 PM

Partly cloudy

56° 💧 None 💨 3 mph H 49%30.00 inHg

6:00 PM

Light rain

55° 💧 None 💨 3 mph H 66%30.00 inHg

Sunday

12:00 AM

Light rain

55° 💧 None 💨 4 mph H 73%29.91 inHg

6:00 AM

Mostly cloudy night

45° 💧 None 💨 2 mph H 93%30.00 inHg

12:00 PM

Partly cloudy

41° 💧 None 💨 3 mph H 92%30.06 inHg

6:00 PM

Mostly sunny

53° 💧 None 💨 3 mph H 64%30.15 inHg

Monday

12:00 AM

Partly cloudy night

54° 💧 None 💨 7 mph H 64%30.12 inHg

6:00 AM

Clear night

40° 💧 None 💨 2 mph H 95%30.21 inHg

12:00 PM

Mostly sunny

37° 💧 None 💨 3 mph H 95%30.24 inHg

6:00 PM

Sunny

59° 💧 None 💨 2 mph H 48%30.15 inHg

Tuesday

12:00 AM

Partly cloudy night

58° 💧 None 💨 2 mph H 62%30.06 inHg

6:00 AM

Mostly clear night

43° 💧 None 💨 4 mph H 85%30.09 inHg

12:00 PM

Sunny

39° 💧 None 💨 5 mph H 89%30.06 inHg

6:00 PM

Sunny

62° 💧 None 💨 7 mph H 40%29.97 inHg

Wednesday

12:00 AM

Overcast night

64° 💧 None 💨 5 mph H 30%29.83 inHg

6:00 AM

Clear night

45° 💧 None 💨 4 mph H 64%29.91 inHg

12:00 PM

Mostly sunny

42° 💧 None 💨 4 mph H 70%29.94 inHg

6:00 PM

Mostly sunny

68° 💧 None 💨 6 mph H 33%29.85 inHg

Thursday

12:00 AM

Clear night

66° 💧 None 💨 4 mph H 36%29.80 inHg

6:00 AM

Partly cloudy night

48° 💧 None 💨 4 mph H 71%29.88 inHg

12:00 PM

Partly cloudy

47° 💧 None 💨 5 mph H 74%29.91 inHg

6:00 PM

Light rain

62° 💧 None 💨 10 mph H 46%29.91 inHg

Friday

12:00 AM

Mostly clear night

61° 💧 None 💨 7 mph H 44%29.91 inHg

6:00 AM

Clear night

44° 💧 None 💨 4 mph H 84%30.06 inHg

12:00 PM

Sunny

39° 💧 None 💨 4 mph H 85%30.09 inHg

6:00 PM

Sunny

63° 💧 None 💨 9 mph H 27%30.06 inHg

Saturday

12:00 AM

Clear night

64° 💧 None 💨 6 mph H 25%30.06 inHg

6:00 AM

Clear night

43° 💧 None 💨 5 mph H 68%30.18 inHg

12:00 PM

Mostly sunny

39° 💧 None 💨 5 mph H 73%30.27 inHg

6:00 PM

Partly cloudy

66° 💧 None 💨 3 mph H 25%30.21 inHg

Sunday

12:00 AM

Clear night

64° 💧 None 💨 3 mph H 35%30.18 inHg

6:00 AM

Mostly clear night

47° 💧 None 💨 2 mph H 57%30.27 inHg

12:00 PM

Sunny

41° 💧 None 💨 5 mph H 66%30.30 inHg

6:00 PM

Sunny

69° 💧 None 💨 2 mph H 25%30.21 inHg

Monday

12:00 AM

Clear night

68° 💧 None 💨 4 mph H 33%30.15 inHg

6:00 AM

Clear night

48° 💧 None 💨 3 mph H 54%30.24 inHg

12:00 PM

Sunny

42° 💧 None 💨 5 mph H 63%30.27 inHg

In South Glastonbury and, more broadly, across the state of Montana: Tonight, expect a mix of sun and clouds with temperatures holding steady around 59 degrees. Light northwest winds will blow at up to 2 mph, with occasional gusts reaching 5 mph. There is a high chance of rain, with possible accumulation around 0.06 inches, mainly during the late evening hours. The cool conditions will persist through the night, so it’s a good idea to dress accordingly if heading outdoors. No significant weather disturbances are expected beyond the chance of light rain, making for a relatively quiet evening.

15-Day Weather Outlook for South Glastonbury

TomorrowTomorrow

Overcast 58°/39° 💧 None 💨 11 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 67°/35° 💧 None 💨 8 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 62°/38° 💧 0.062 in 💨 6 mph

Thursday, Sep 17Thu Sep 17

Partly cloudy 69°/42° 💧 0.026 in 💨 7 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 69°/45° 💧 0.053 in 💨 7 mph

Saturday, Sep 19Sat Sep 19

Light rain 56°/39° 💧 0.141 in 💨 4 mph

Sunday, Sep 20Sun Sep 20

Light rain 55°/41° 💧 0.171 in 💨 4 mph

Monday, Sep 21Mon Sep 21

Partly cloudy 59°/37° 💧 0.020 in 💨 7 mph

Tuesday, Sep 22Tue Sep 22

Partly cloudy 62°/39° 💧 0.012 in 💨 7 mph

Wednesday, Sep 23Wed Sep 23

Mostly sunny 68°/42° 💧 0.003 in 💨 6 mph

Thursday, Sep 24Thu Sep 24

Light rain 66°/47° 💧 0.024 in 💨 10 mph

Friday, Sep 25Fri Sep 25

Mostly sunny 63°/39° 💧 0.029 in 💨 9 mph

Saturday, Sep 26Sat Sep 26

Mostly sunny 66°/39° 💧 None 💨 6 mph

Sunday, Sep 27Sun Sep 27

Mostly sunny 69°/41° 💧 None 💨 5 mph

Monday, Sep 28Mon Sep 28

Sunny 68°/42° 💧 None 💨 5 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in South Glastonbury

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for South Glastonbury

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 10:00 PM

PM2.5 Fine particles Good 0,8µg/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 1,5µg/m³

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

O₃ Ozone Fair 73,2µg/m³

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

NO₂ Nitrogen dioxide Good 1,2µg/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 South Glastonbury

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 6,0High 🙂Fair

Tomorrow UV 5,7Moderate 🙂Fair

Tuesday UV 5,3Moderate 🙂Fair

Wednesday UV 4,9Moderate 🙂Fair

Thursday UV 7,0High 🙂Fair

Friday UV 6,0High —Unavailable

Saturday UV 4,0Moderate —Unavailable

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.

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 South Glastonbury

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SOUTH GLASTONBURY, MONTANA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 10:00 PM–11:00 PM.

89/100Best-hour score

BEST TIME TONIGHT 10:00 PM–11:00 PM Astronomical darkness: 9:19 PM–5:19 AM

☁ Cloud cover 15% Real hourly forecast for the best viewing hour.

☾ Moonlight 6% Waxing Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 18° 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 min37%

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 South Glastonbury were last refreshed today at 9:20 PM. The current forecast period extends through 15/09/2026 at 7:00 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.