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As of 13:17 MDT

Weather in Alta, MT

81°Current weather

Alta, Saturday, 8 August, 13:17

Clear. Feels like 79°. High 86°, low 51°.

Pressure29.91 inHg
Wind7.9 mph W
Humidity16%
Visibility6.2 mi
Dew point29°
Sun, 0986° / 51°0Overcast
86 °Overcast

Alta, Sunday, 9 August

Overcast. High 86°, low 51°.

Pressure29.91 inHg
Wind3.2 mph SW
Humidity14%
Visibility6.2 mi
Dew point29°
Mon, 1089° / 50°0Clear
89 °Clear

Alta, Monday, 10 August

Clear. High 89°, low 50°.

Pressure29.88 inHg
Wind7.9 mph SW
Humidity14%
Visibility6.2 mi
Dew point27°
Tue, 1189° / 54°0Clear
89 °Clear

Alta, Tuesday, 11 August

Clear. High 89°, low 54°.

Pressure29.94 inHg
Wind4.9 mph SW
Humidity14%
Visibility6.2 mi
Dew point28°
Wed, 1290° / 56°0Clear
90 °Clear

Alta, Wednesday, 12 August

Clear. High 90°, low 56°.

Pressure29.83 inHg
Wind5.1 mph SW
Humidity16%
Visibility6.2 mi
Dew point32°
Thu, 1387° / 55°0Mostly clear
87 °Mostly clear

Alta, Thursday, 13 August

Mostly clear. High 87°, low 55°.

Pressure29.77 inHg
Wind13.8 mph W
Humidity16%
Visibility—
Dew point31°
Fri, 1488° / 56°0Overcast
88 °Overcast

Alta, Friday, 14 August

Overcast. High 88°, low 56°.

Pressure29.85 inHg
Wind10.4 mph NW
Humidity20%
Visibility—
Dew point36°
Sat, 1575° / 64°0.08Light rain
75 °Light rain

Alta, Saturday, 15 August

Light rain. High 75°, low 64°.

Pressure30.06 inHg
Wind14.7 mph W
Humidity47%
Visibility—
Dew point49°
Sun, 1687° / 55°0.04Light rain
87 °Light rain

Alta, Sunday, 16 August

Light rain. High 87°, low 55°.

Pressure30.03 inHg
Wind18.3 mph W
Humidity25%
Visibility—
Dew point40°
Mon, 1792° / 58°0Overcast
92 °Overcast

Alta, Monday, 17 August

Overcast. High 92°, low 58°.

Pressure30.03 inHg
Wind11.3 mph NW
Humidity13%
Visibility—
Dew point27°
Tue, 1871° / 56°0.08Light rain
71 °Light rain

Alta, Tuesday, 18 August

Light rain. High 71°, low 56°.

Pressure30.12 inHg
Wind7.4 mph NW
Humidity80%
Visibility—
Dew point56°
Wed, 1988° / 50°0Mostly clear
88 °Mostly clear

Alta, Wednesday, 19 August

Mostly clear. High 88°, low 50°.

Pressure30.06 inHg
Wind4.5 mph N
Humidity24%
Visibility—
Dew point37°
Thu, 2089° / 58°0Partly cloudy
89 °Partly cloudy

Alta, Thursday, 20 August

Partly cloudy. High 89°, low 58°.

Pressure29.94 inHg
Wind7.2 mph SW
Humidity19%
Visibility—
Dew point36°
Fri, 2191° / 59°0Clear
91 °Clear

Alta, Friday, 21 August

Clear. High 91°, low 59°.

Pressure29.94 inHg
Wind6.9 mph NW
Humidity20%
Visibility—
Dew point38°
Sat, 2292° / 60°0Clear
92 °Clear

Alta, Saturday, 22 August

Clear. High 92°, low 60°.

Pressure29.97 inHg
Wind8.9 mph N
Humidity19%
Visibility—
Dew point39°
Sun, 2396° / 63°0Overcast
96 °Overcast

Alta, Sunday, 23 August

Overcast. High 96°, low 63°.

Pressure29.97 inHg
Wind8 mph NE
Humidity17%
Visibility—
Dew point37°

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 Alta, 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 Alta, 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.