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As of 12:27 MDT

Weather in Sumatra, MT

88°Current weather

Sumatra, Saturday, 8 August, 12:27

Clear. Feels like 84°. High 94°, low 62°.

Pressure29.80 inHg
Wind15.3 mph NW
Humidity16%
Visibility6.2 mi
Dew point35°
Sun, 0992° / 62°0Clear
92 °Clear

Sumatra, Sunday, 9 August

Clear. High 92°, low 62°.

Pressure29.80 inHg
Wind13.3 mph NW
Humidity15%
Visibility6.2 mi
Dew point35°
Mon, 1089° / 55°0Clear
89 °Clear

Sumatra, Monday, 10 August

Clear. High 89°, low 55°.

Pressure29.88 inHg
Wind6 mph NE
Humidity29%
Visibility6.2 mi
Dew point43°
Tue, 1187° / 63°0Clear
87 °Clear

Sumatra, Tuesday, 11 August

Clear. High 87°, low 63°.

Pressure29.94 inHg
Wind5.1 mph NE
Humidity25%
Visibility6.2 mi
Dew point43°
Wed, 1280° / 63°0Partly cloudy
80 °Partly cloudy

Sumatra, Wednesday, 12 August

Partly cloudy. High 80°, low 63°.

Pressure30.00 inHg
Wind16 mph NE
Humidity32%
Visibility6.2 mi
Dew point45°
Thu, 1382° / 57°0Partly cloudy
82 °Partly cloudy

Sumatra, Thursday, 13 August

Partly cloudy. High 82°, low 57°.

Pressure30.03 inHg
Wind20.1 mph E
Humidity28%
Visibility—
Dew point37°
Fri, 1484° / 62°0Overcast
84 °Overcast

Sumatra, Friday, 14 August

Overcast. High 84°, low 62°.

Pressure29.85 inHg
Wind18.5 mph E
Humidity37%
Visibility—
Dew point49°
Sat, 1580° / 68°0.09Light rain
80 °Light rain

Sumatra, Saturday, 15 August

Light rain. High 80°, low 68°.

Pressure30.00 inHg
Wind14.7 mph E
Humidity47%
Visibility—
Dew point53°
Sun, 1686° / 61°0.04Light rain
86 °Light rain

Sumatra, Sunday, 16 August

Light rain. High 86°, low 61°.

Pressure29.97 inHg
Wind13.2 mph NW
Humidity44%
Visibility—
Dew point52°
Mon, 1795° / 67°0Partly cloudy
95 °Partly cloudy

Sumatra, Monday, 17 August

Partly cloudy. High 95°, low 67°.

Pressure29.88 inHg
Wind16.4 mph N
Humidity20%
Visibility—
Dew point41°
Tue, 1882° / 67°0Overcast
82 °Overcast

Sumatra, Tuesday, 18 August

Overcast. High 82°, low 67°.

Pressure30.03 inHg
Wind10 mph NE
Humidity35%
Visibility—
Dew point47°
Wed, 1980° / 69°0Overcast
80 °Overcast

Sumatra, Wednesday, 19 August

Overcast. High 80°, low 69°.

Pressure30.12 inHg
Wind18.4 mph SE
Humidity49%
Visibility—
Dew point52°
Thu, 2091° / 62°0Clear
91 °Clear

Sumatra, Thursday, 20 August

Clear. High 91°, low 62°.

Pressure29.91 inHg
Wind13.9 mph SE
Humidity38%
Visibility—
Dew point51°
Fri, 2196° / 70°0.01Light rain
96 °Light rain

Sumatra, Friday, 21 August

Light rain. High 96°, low 70°.

Pressure29.80 inHg
Wind16.1 mph NW
Humidity25%
Visibility—
Dew point48°
Sat, 2293° / 71°0.06Light rain
93 °Light rain

Sumatra, Saturday, 22 August

Light rain. High 93°, low 71°.

Pressure29.80 inHg
Wind15.8 mph NW
Humidity28%
Visibility—
Dew point50°
Sun, 2390° / 69°0Overcast
90 °Overcast

Sumatra, Sunday, 23 August

Overcast. High 90°, low 69°.

Pressure29.85 inHg
Wind12.7 mph SW
Humidity17%
Visibility—
Dew point32°

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 Sumatra, 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 Sumatra, 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.