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As of 10:47 MDT

Weather in Alta, MT

56°Current weather

Alta, Friday, 9 October, 10:47

Partly cloudy. Feels like 53°. High 70°, low 38°.

Pressure29.71 inHg
Wind7 mph S
Humidity40%
Visibility6.2 mi
Dew point32°
Sat, 1046° / 32°0.46Snow
46 °Snow

Alta, Saturday, 10 October

Snow. High 46°, low 32°.

Pressure29.71 inHg
Wind1.3 mph NW
Humidity96%
Visibility3.1 mi
Dew point39°
Sun, 1138° / 30°0.29Snow
38 °Snow

Alta, Sunday, 11 October

Snow. High 38°, low 30°.

Pressure29.88 inHg
Wind5.1 mph NE
Humidity93%
Visibility6.2 mi
Dew point28°
Mon, 1244° / 30°0.06Light snow
44 °Light snow

Alta, Monday, 12 October

Light snow. High 44°, low 30°.

Pressure30.03 inHg
Wind2.7 mph NE
Humidity84%
Visibility6.2 mi
Dew point27°
Tue, 1350° / 26°0Clear
50 °Clear

Alta, Tuesday, 13 October

Clear. High 50°, low 26°.

Pressure30.09 inHg
Wind2.2 mph NE
Humidity69%
Visibility—
Dew point32°
Wed, 1453° / 28°0Clear
53 °Clear

Alta, Wednesday, 14 October

Clear. High 53°, low 28°.

Pressure30.18 inHg
Wind5.5 mph W
Humidity58%
Visibility—
Dew point31°
Thu, 1559° / 35°0Clear
59 °Clear

Alta, Thursday, 15 October

Clear. High 59°, low 35°.

Pressure30.27 inHg
Wind7.2 mph NW
Humidity37%
Visibility—
Dew point27°
Fri, 1661° / 34°0Overcast
61 °Overcast

Alta, Friday, 16 October

Overcast. High 61°, low 34°.

Pressure30.42 inHg
Wind4.3 mph NE
Humidity37%
Visibility—
Dew point24°
Sat, 1767° / 40°0Overcast
67 °Overcast

Alta, Saturday, 17 October

Overcast. High 67°, low 40°.

Pressure30.15 inHg
Wind5 mph S
Humidity26%
Visibility—
Dew point24°
Sun, 1866° / 43°0Overcast
66 °Overcast

Alta, Sunday, 18 October

Overcast. High 66°, low 43°.

Pressure30.00 inHg
Wind4.4 mph S
Humidity20%
Visibility—
Dew point17°
Mon, 1964° / 41°0Overcast
64 °Overcast

Alta, Monday, 19 October

Overcast. High 64°, low 41°.

Pressure29.85 inHg
Wind6.6 mph NW
Humidity25%
Visibility—
Dew point21°
Tue, 2056° / 38°0Partly cloudy
56 °Partly cloudy

Alta, Tuesday, 20 October

Partly cloudy. High 56°, low 38°.

Pressure30.15 inHg
Wind5.6 mph W
Humidity40%
Visibility—
Dew point27°
Wed, 2161° / 37°0Mostly clear
61 °Mostly clear

Alta, Wednesday, 21 October

Mostly clear. High 61°, low 37°.

Pressure30.12 inHg
Wind11.9 mph W
Humidity28%
Visibility—
Dew point22°
Thu, 2264° / 36°0Partly cloudy
64 °Partly cloudy

Alta, Thursday, 22 October

Partly cloudy. High 64°, low 36°.

Pressure30.24 inHg
Wind4.1 mph W
Humidity30%
Visibility—
Dew point24°
Fri, 2369° / 38°0Clear
69 °Clear

Alta, Friday, 23 October

Clear. High 69°, low 38°.

Pressure30.12 inHg
Wind4.3 mph S
Humidity19%
Visibility—
Dew point16°
Sat, 2469° / 40°0Clear
69 °Clear

Alta, Saturday, 24 October

Clear. High 69°, low 40°.

Pressure30.06 inHg
Wind4.7 mph S
Humidity16%
Visibility—
Dew point13°

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.