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As of 23:30 MDT

Weather in Alta, MT

45°Current weather

Alta, Friday, 9 October, 23:30

Partly cloudy. Feels like 44°. High 71°, low 37°.

Pressure29.65 inHg
Wind3 mph W
Humidity61%
Visibility6.2 mi
Dew point33°
Sat, 1046° / 33°0.31Snow
46 °Snow

Alta, Saturday, 10 October

Snow. High 46°, low 33°.

Pressure29.68 inHg
Wind1.9 mph N
Humidity94%
Visibility4.6 mi
Dew point39°
Sun, 1140° / 25°0.15Light snow
40 °Light snow

Alta, Sunday, 11 October

Light snow. High 40°, low 25°.

Pressure29.85 inHg
Wind6.1 mph NE
Humidity93%
Visibility6.2 mi
Dew point29°
Mon, 1246° / 29°0.09Snow
46 °Snow

Alta, Monday, 12 October

Snow. High 46°, low 29°.

Pressure30.03 inHg
Wind1.8 mph NE
Humidity82%
Visibility6.2 mi
Dew point26°
Tue, 1351° / 28°0Clear
51 °Clear

Alta, Tuesday, 13 October

Clear. High 51°, low 28°.

Pressure30.06 inHg
Wind1.1 mph N
Humidity62%
Visibility6.2 mi
Dew point28°
Wed, 1458° / 31°0Clear
58 °Clear

Alta, Wednesday, 14 October

Clear. High 58°, low 31°.

Pressure30.18 inHg
Wind2.7 mph N
Humidity49%
Visibility—
Dew point31°
Thu, 1557° / 35°0.01Light rain
57 °Light rain

Alta, Thursday, 15 October

Light rain. High 57°, low 35°.

Pressure30.30 inHg
Wind6.3 mph NW
Humidity52%
Visibility—
Dew point35°
Fri, 1656° / 34°0Partly cloudy
56 °Partly cloudy

Alta, Friday, 16 October

Partly cloudy. High 56°, low 34°.

Pressure30.45 inHg
Wind4.6 mph NE
Humidity58%
Visibility—
Dew point33°
Sat, 1762° / 36°0Overcast
62 °Overcast

Alta, Saturday, 17 October

Overcast. High 62°, low 36°.

Pressure30.09 inHg
Wind4.9 mph S
Humidity38%
Visibility—
Dew point29°
Sun, 1862° / 39°0Overcast
62 °Overcast

Alta, Sunday, 18 October

Overcast. High 62°, low 39°.

Pressure29.94 inHg
Wind4.9 mph SW
Humidity37%
Visibility—
Dew point29°
Mon, 1948° / 37°0.02Snow
48 °Snow

Alta, Monday, 19 October

Snow. High 48°, low 37°.

Pressure29.94 inHg
Wind5.8 mph W
Humidity60%
Visibility—
Dew point32°
Tue, 2040° / 32°0.23Snow
40 °Snow

Alta, Tuesday, 20 October

Snow. High 40°, low 32°.

Pressure29.97 inHg
Wind16.7 mph W
Humidity76%
Visibility—
Dew point30°
Wed, 2148° / 27°0.02Light snow
48 °Light snow

Alta, Wednesday, 21 October

Light snow. High 48°, low 27°.

Pressure30.15 inHg
Wind5.8 mph SW
Humidity63%
Visibility—
Dew point28°
Thu, 2240° / 26°0.24Snow
40 °Snow

Alta, Thursday, 22 October

Snow. High 40°, low 26°.

Pressure30.06 inHg
Wind10.7 mph NW
Humidity70%
Visibility—
Dew point29°
Fri, 2344° / 22°0Overcast
44 °Overcast

Alta, Friday, 23 October

Overcast. High 44°, low 22°.

Pressure30.45 inHg
Wind4.1 mph W
Humidity67%
Visibility—
Dew point28°
Sat, 2450° / 26°0Overcast
50 °Overcast

Alta, Saturday, 24 October

Overcast. High 50°, low 26°.

Pressure30.42 inHg
Wind3.9 mph SW
Humidity58%
Visibility—
Dew point28°

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.