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As of 03:17 MDT

Weather in Alta, MT

34°Current weather

Alta, Sunday, 11 October, 03:17

Snow. Feels like 29°. High 40°, low 33°.

Pressure29.83 inHg
Wind5.4 mph NE
Humidity92%
Visibility4.4 mi
Dew point32°
Mon, 1245° / 30°0.05Snow
45 °Snow

Alta, Monday, 12 October

Snow. High 45°, low 30°.

Pressure30.00 inHg
Wind2.5 mph NE
Humidity79%
Visibility6.2 mi
Dew point27°
Tue, 1352° / 28°0Clear
52 °Clear

Alta, Tuesday, 13 October

Clear. High 52°, low 28°.

Pressure30.06 inHg
Wind0.6 mph NW
Humidity67%
Visibility6.2 mi
Dew point30°
Wed, 1458° / 29°0Clear
58 °Clear

Alta, Wednesday, 14 October

Clear. High 58°, low 29°.

Pressure30.18 inHg
Wind1.2 mph NW
Humidity48%
Visibility6.2 mi
Dew point22°
Thu, 1561° / 33°0Clear
61 °Clear

Alta, Thursday, 15 October

Clear. High 61°, low 33°.

Pressure30.45 inHg
Wind5.3 mph E
Humidity47%
Visibility—
Dew point32°
Fri, 1666° / 34°0Clear
66 °Clear

Alta, Friday, 16 October

Clear. High 66°, low 34°.

Pressure30.36 inHg
Wind4.8 mph S
Humidity40%
Visibility—
Dew point32°
Sat, 1767° / 39°0Mostly clear
67 °Mostly clear

Alta, Saturday, 17 October

Mostly clear. High 67°, low 39°.

Pressure30.18 inHg
Wind5.4 mph SW
Humidity34%
Visibility—
Dew point29°
Sun, 1869° / 42°0Overcast
69 °Overcast

Alta, Sunday, 18 October

Overcast. High 69°, low 42°.

Pressure30.03 inHg
Wind9.6 mph SW
Humidity33%
Visibility—
Dew point29°
Mon, 1959° / 41°0Mostly clear
59 °Mostly clear

Alta, Monday, 19 October

Mostly clear. High 59°, low 41°.

Pressure29.94 inHg
Wind12.4 mph W
Humidity37%
Visibility—
Dew point30°
Tue, 2049° / 36°0Overcast
49 °Overcast

Alta, Tuesday, 20 October

Overcast. High 49°, low 36°.

Pressure30.03 inHg
Wind6.1 mph W
Humidity56%
Visibility—
Dew point31°
Wed, 2156° / 33°0Overcast
56 °Overcast

Alta, Wednesday, 21 October

Overcast. High 56°, low 33°.

Pressure30.12 inHg
Wind4.2 mph SE
Humidity32%
Visibility—
Dew point19°
Thu, 2254° / 36°0.07Light rain
54 °Light rain

Alta, Thursday, 22 October

Light rain. High 54°, low 36°.

Pressure29.94 inHg
Wind5.7 mph SE
Humidity32%
Visibility—
Dew point22°
Fri, 2356° / 36°0Overcast
56 °Overcast

Alta, Friday, 23 October

Overcast. High 56°, low 36°.

Pressure30.27 inHg
Wind4.9 mph NW
Humidity65%
Visibility—
Dew point37°
Sat, 2461° / 37°0Overcast
61 °Overcast

Alta, Saturday, 24 October

Overcast. High 61°, low 37°.

Pressure30.30 inHg
Wind3.4 mph NE
Humidity42%
Visibility—
Dew point31°
Sun, 2564° / 37°0Clear
64 °Clear

Alta, Sunday, 25 October

Clear. High 64°, low 37°.

Pressure30.33 inHg
Wind4 mph SE
Humidity34%
Visibility—
Dew point26°
Mon, 2667° / 37°0Clear
67 °Clear

Alta, Monday, 26 October

Clear. High 67°, low 37°.

Pressure30.15 inHg
Wind4.3 mph S
Humidity24%
Visibility—
Dew point20°

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.