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As of 15:55 MDT

Weather in Sioux Pass, MT

60°Current weather

Sioux Pass, Sunday, 18 October, 15:55

Partly cloudy. Feels like 57°. High 60°, low 32°.

Pressure30.18 inHg
Wind6.1 mph NW
Humidity31%
Visibility6.2 mi
Dew point30°
Mon, 1964° / 32°0Clear
64 °Clear

Sioux Pass, Monday, 19 October

Clear. High 64°, low 32°.

Pressure30.15 inHg
Wind15.5 mph SE
Humidity40%
Visibility6.2 mi
Dew point32°
Tue, 2060° / 36°0Partly cloudy
60 °Partly cloudy

Sioux Pass, Tuesday, 20 October

Partly cloudy. High 60°, low 36°.

Pressure30.06 inHg
Wind4 mph N
Humidity65%
Visibility6.2 mi
Dew point44°
Wed, 2160° / 38°0Clear
60 °Clear

Sioux Pass, Wednesday, 21 October

Clear. High 60°, low 38°.

Pressure30.24 inHg
Wind9.1 mph SE
Humidity59%
Visibility6.2 mi
Dew point40°
Thu, 2271° / 50°0Mostly clear
71 °Mostly clear

Sioux Pass, Thursday, 22 October

Mostly clear. High 71°, low 50°.

Pressure29.83 inHg
Wind9.2 mph SE
Humidity66%
Visibility6.2 mi
Dew point53°
Fri, 2371° / 55°0.2Rain
71 °Rain

Sioux Pass, Friday, 23 October

Rain. High 71°, low 55°.

Pressure29.44 inHg
Wind13.4 mph W
Humidity73%
Visibility—
Dew point56°
Sat, 2446° / 36°0.61Snow
46 °Snow

Sioux Pass, Saturday, 24 October

Snow. High 46°, low 36°.

Pressure30.15 inHg
Wind25.7 mph W
Humidity66%
Visibility—
Dew point30°
Sun, 2549° / 33°0Overcast
49 °Overcast

Sioux Pass, Sunday, 25 October

Overcast. High 49°, low 33°.

Pressure30.27 inHg
Wind17.7 mph NE
Humidity55%
Visibility—
Dew point26°
Mon, 2646° / 34°0Partly cloudy
46 °Partly cloudy

Sioux Pass, Monday, 26 October

Partly cloudy. High 46°, low 34°.

Pressure30.33 inHg
Wind15.1 mph E
Humidity58%
Visibility—
Dew point28°
Tue, 2751° / 41°0Overcast
51 °Overcast

Sioux Pass, Tuesday, 27 October

Overcast. High 51°, low 41°.

Pressure30.18 inHg
Wind12 mph SE
Humidity73%
Visibility—
Dew point38°
Wed, 2855° / 45°0Light rain
55 °Light rain

Sioux Pass, Wednesday, 28 October

Light rain. High 55°, low 45°.

Pressure29.77 inHg
Wind20.1 mph SE
Humidity88%
Visibility—
Dew point47°
Thu, 2944° / 38°0.01Light rain
44 °Light rain

Sioux Pass, Thursday, 29 October

Light rain. High 44°, low 38°.

Pressure29.80 inHg
Wind19 mph NW
Humidity95%
Visibility—
Dew point37°
Fri, 3057° / 36°0Overcast
57 °Overcast

Sioux Pass, Friday, 30 October

Overcast. High 57°, low 36°.

Pressure29.91 inHg
Wind13.7 mph W
Humidity47%
Visibility—
Dew point30°
Sat, 3144° / 34°0Clear
44 °Clear

Sioux Pass, Saturday, 31 October

Clear. High 44°, low 34°.

Pressure30.18 inHg
Wind11.3 mph NE
Humidity56%
Visibility—
Dew point25°
Sun, 0135° / 26°0Partly cloudy
35 °Partly cloudy

Sioux Pass, Sunday, 1 November

Partly cloudy. High 35°, low 26°.

Pressure30.53 inHg
Wind11.4 mph N
Humidity59%
Visibility—
Dew point20°
Mon, 0236° / 26°0.16Snow
36 °Snow

Sioux Pass, Monday, 2 November

Snow. High 36°, low 26°.

Pressure30.45 inHg
Wind10.4 mph NE
Humidity56%
Visibility—
Dew point18°

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.