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As of 13:25 MDT

Weather in South Glastonbury, MT

84°Current weather

South Glastonbury, Sunday, 9 August, 13:25

Clear. Feels like 82°. High 85°, low 54°.

Pressure29.80 inHg
Wind9.8 mph W
Humidity21%
Visibility6.2 mi
Dew point33°
Mon, 1089° / 50°0Clear
89 °Clear

South Glastonbury, Monday, 10 August

Clear. High 89°, low 50°.

Pressure29.83 inHg
Wind12.8 mph W
Humidity10%
Visibility6.2 mi
Dew point22°
Tue, 1191° / 54°0Clear
91 °Clear

South Glastonbury, Tuesday, 11 August

Clear. High 91°, low 54°.

Pressure29.88 inHg
Wind4.3 mph W
Humidity10%
Visibility6.2 mi
Dew point21°
Wed, 1289° / 55°0Overcast
89 °Overcast

South Glastonbury, Wednesday, 12 August

Overcast. High 89°, low 55°.

Pressure29.83 inHg
Wind3 mph NE
Humidity16%
Visibility6.2 mi
Dew point32°
Thu, 1380° / 53°0Overcast
80 °Overcast

South Glastonbury, Thursday, 13 August

Overcast. High 80°, low 53°.

Pressure29.83 inHg
Wind6.6 mph NE
Humidity36%
Visibility6.2 mi
Dew point43°
Fri, 1462° / 55°0.12Light rain
62 °Light rain

South Glastonbury, Friday, 14 August

Light rain. High 62°, low 55°.

Pressure30.03 inHg
Wind4.1 mph N
Humidity88%
Visibility—
Dew point56°
Sat, 1577° / 52°0.2Rain
77 °Rain

South Glastonbury, Saturday, 15 August

Rain. High 77°, low 52°.

Pressure29.97 inHg
Wind6.2 mph NE
Humidity38%
Visibility—
Dew point46°
Sun, 1682° / 51°0.33Rain
82 °Rain

South Glastonbury, Sunday, 16 August

Rain. High 82°, low 51°.

Pressure29.88 inHg
Wind19.6 mph W
Humidity23%
Visibility—
Dew point37°
Mon, 1779° / 51°0.02Light rain
79 °Light rain

South Glastonbury, Monday, 17 August

Light rain. High 79°, low 51°.

Pressure29.94 inHg
Wind14.9 mph W
Humidity26%
Visibility—
Dew point36°
Tue, 1885° / 54°0Partly cloudy
85 °Partly cloudy

South Glastonbury, Tuesday, 18 August

Partly cloudy. High 85°, low 54°.

Pressure29.97 inHg
Wind9.7 mph W
Humidity21%
Visibility—
Dew point34°
Wed, 1988° / 56°0Overcast
88 °Overcast

South Glastonbury, Wednesday, 19 August

Overcast. High 88°, low 56°.

Pressure29.94 inHg
Wind12.2 mph W
Humidity12%
Visibility—
Dew point24°
Thu, 2089° / 58°0Overcast
89 °Overcast

South Glastonbury, Thursday, 20 August

Overcast. High 89°, low 58°.

Pressure29.97 inHg
Wind9.4 mph W
Humidity15%
Visibility—
Dew point29°
Fri, 2190° / 61°0Mostly clear
90 °Mostly clear

South Glastonbury, Friday, 21 August

Mostly clear. High 90°, low 61°.

Pressure30.03 inHg
Wind11.2 mph W
Humidity20%
Visibility—
Dew point39°
Sat, 2291° / 62°0Overcast
91 °Overcast

South Glastonbury, Saturday, 22 August

Overcast. High 91°, low 62°.

Pressure30.00 inHg
Wind8.3 mph NW
Humidity18%
Visibility—
Dew point37°
Sun, 2394° / 59°0Clear
94 °Clear

South Glastonbury, Sunday, 23 August

Clear. High 94°, low 59°.

Pressure30.00 inHg
Wind7 mph NW
Humidity17%
Visibility—
Dew point36°
Mon, 2496° / 61°0Clear
96 °Clear

South Glastonbury, Monday, 24 August

Clear. High 96°, low 61°.

Pressure29.88 inHg
Wind11 mph W
Humidity14%
Visibility—
Dew point33°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for South Glastonbury, MT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in South Glastonbury, MT since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.