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As of 16:42 MDT

Weather in Sioux Pass, MT

49°Current weather

Sioux Pass, Tuesday, 13 October, 16:42

Clear. Feels like 47°. High 49°, low 35°.

Pressure30.06 inHg
Wind5.2 mph NW
Humidity68%
Visibility6.2 mi
Dew point39°
Wed, 1457° / 30°0Clear
57 °Clear

Sioux Pass, Wednesday, 14 October

Clear. High 57°, low 30°.

Pressure30.15 inHg
Wind7.1 mph S
Humidity53%
Visibility6.2 mi
Dew point36°
Thu, 1549° / 36°0Overcast
49 °Overcast

Sioux Pass, Thursday, 15 October

Overcast. High 49°, low 36°.

Pressure30.47 inHg
Wind24.6 mph NW
Humidity56%
Visibility6.2 mi
Dew point28°
Fri, 1657° / 29°0Clear
57 °Clear

Sioux Pass, Friday, 16 October

Clear. High 57°, low 29°.

Pressure30.56 inHg
Wind14.3 mph S
Humidity48%
Visibility6.2 mi
Dew point24°
Sat, 1771° / 46°0Partly cloudy
71 °Partly cloudy

Sioux Pass, Saturday, 17 October

Partly cloudy. High 71°, low 46°.

Pressure29.85 inHg
Wind9.7 mph SW
Humidity35%
Visibility6.2 mi
Dew point37°
Sun, 1859° / 46°0Clear
59 °Clear

Sioux Pass, Sunday, 18 October

Clear. High 59°, low 46°.

Pressure30.00 inHg
Wind9.9 mph W
Humidity40%
Visibility—
Dew point31°
Mon, 1965° / 42°0Overcast
65 °Overcast

Sioux Pass, Monday, 19 October

Overcast. High 65°, low 42°.

Pressure29.91 inHg
Wind16.5 mph S
Humidity35%
Visibility—
Dew point29°
Tue, 2065° / 49°0Overcast
65 °Overcast

Sioux Pass, Tuesday, 20 October

Overcast. High 65°, low 49°.

Pressure29.85 inHg
Wind18.9 mph E
Humidity32%
Visibility—
Dew point29°
Wed, 2161° / 44°0.03Light rain
61 °Light rain

Sioux Pass, Wednesday, 21 October

Light rain. High 61°, low 44°.

Pressure29.68 inHg
Wind21.4 mph E
Humidity65%
Visibility—
Dew point42°
Thu, 2252° / 40°0.55Rain
52 °Rain

Sioux Pass, Thursday, 22 October

Rain. High 52°, low 40°.

Pressure29.53 inHg
Wind21.7 mph W
Humidity74%
Visibility—
Dew point35°
Fri, 2345° / 35°0Clear
45 °Clear

Sioux Pass, Friday, 23 October

Clear. High 45°, low 35°.

Pressure29.85 inHg
Wind18 mph W
Humidity52%
Visibility—
Dew point24°
Sat, 2437° / 28°0.59Snow
37 °Snow

Sioux Pass, Saturday, 24 October

Snow. High 37°, low 28°.

Pressure30.24 inHg
Wind13.1 mph N
Humidity98%
Visibility—
Dew point32°
Sun, 2531° / 21°0Overcast
31 °Overcast

Sioux Pass, Sunday, 25 October

Overcast. High 31°, low 21°.

Pressure30.39 inHg
Wind7 mph NW
Humidity91%
Visibility—
Dew point27°
Mon, 2633° / 20°0Overcast
33 °Overcast

Sioux Pass, Monday, 26 October

Overcast. High 33°, low 20°.

Pressure30.27 inHg
Wind7.8 mph NW
Humidity91%
Visibility—
Dew point27°
Tue, 2729° / 17°0Partly cloudy
29 °Partly cloudy

Sioux Pass, Tuesday, 27 October

Partly cloudy. High 29°, low 17°.

Pressure30.39 inHg
Wind3.4 mph NE
Humidity83%
Visibility—
Dew point20°
Wed, 2832° / 18°0Mostly clear
32 °Mostly clear

Sioux Pass, Wednesday, 28 October

Mostly clear. High 32°, low 18°.

Pressure30.27 inHg
Wind2.6 mph NE
Humidity88%
Visibility—
Dew point25°

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 Sioux Pass, 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 Sioux Pass, 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.