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As of 20:20 MDT

Weather in Sioux Pass, MT

44°Current weather

Sioux Pass, Friday, 16 October, 20:20

Clear. Feels like 38°. High 57°, low 25°.

Pressure30.24 inHg
Wind13.5 mph SW
Humidity50%
Visibility6.2 mi
Dew point27°
Sat, 1772° / 45°0Partly cloudy
72 °Partly cloudy

Sioux Pass, Saturday, 17 October

Partly cloudy. High 72°, low 45°.

Pressure29.91 inHg
Wind9.2 mph SW
Humidity35%
Visibility6.2 mi
Dew point37°
Sun, 1858° / 43°0Clear
58 °Clear

Sioux Pass, Sunday, 18 October

Clear. High 58°, low 43°.

Pressure30.18 inHg
Wind4.8 mph NW
Humidity39%
Visibility6.2 mi
Dew point30°
Mon, 1963° / 40°0Mostly clear
63 °Mostly clear

Sioux Pass, Monday, 19 October

Mostly clear. High 63°, low 40°.

Pressure30.09 inHg
Wind14.4 mph SE
Humidity46%
Visibility6.2 mi
Dew point36°
Tue, 2063° / 43°0Partly cloudy
63 °Partly cloudy

Sioux Pass, Tuesday, 20 October

Partly cloudy. High 63°, low 43°.

Pressure29.97 inHg
Wind4.9 mph SE
Humidity65%
Visibility6.2 mi
Dew point47°
Wed, 2158° / 41°0Mostly clear
58 °Mostly clear

Sioux Pass, Wednesday, 21 October

Mostly clear. High 58°, low 41°.

Pressure30.27 inHg
Wind7.1 mph SE
Humidity73%
Visibility—
Dew point42°
Thu, 2271° / 46°0Clear
71 °Clear

Sioux Pass, Thursday, 22 October

Clear. High 71°, low 46°.

Pressure29.91 inHg
Wind12.8 mph S
Humidity59%
Visibility—
Dew point46°
Fri, 2358° / 42°0.46Rain
58 °Rain

Sioux Pass, Friday, 23 October

Rain. High 58°, low 42°.

Pressure29.71 inHg
Wind27 mph NW
Humidity88%
Visibility—
Dew point43°
Sat, 2445° / 38°0.16Snow
45 °Snow

Sioux Pass, Saturday, 24 October

Snow. High 45°, low 38°.

Pressure30.45 inHg
Wind24.5 mph NW
Humidity45%
Visibility—
Dew point23°
Sun, 2548° / 34°0.01Light rain
48 °Light rain

Sioux Pass, Sunday, 25 October

Light rain. High 48°, low 34°.

Pressure30.39 inHg
Wind19.5 mph S
Humidity45%
Visibility—
Dew point23°
Mon, 2642° / 36°0.13Snow
42 °Snow

Sioux Pass, Monday, 26 October

Snow. High 42°, low 36°.

Pressure30.06 inHg
Wind12.5 mph NW
Humidity95%
Visibility—
Dew point36°
Tue, 2747° / 34°0Clear
47 °Clear

Sioux Pass, Tuesday, 27 October

Clear. High 47°, low 34°.

Pressure30.21 inHg
Wind6.6 mph W
Humidity51%
Visibility—
Dew point25°
Wed, 2857° / 37°0Mostly clear
57 °Mostly clear

Sioux Pass, Wednesday, 28 October

Mostly clear. High 57°, low 37°.

Pressure29.97 inHg
Wind10.2 mph N
Humidity46%
Visibility—
Dew point30°
Thu, 2943° / 37°0Overcast
43 °Overcast

Sioux Pass, Thursday, 29 October

Overcast. High 43°, low 37°.

Pressure30.00 inHg
Wind16.3 mph NE
Humidity78%
Visibility—
Dew point33°
Fri, 3052° / 40°0Overcast
52 °Overcast

Sioux Pass, Friday, 30 October

Overcast. High 52°, low 40°.

Pressure30.03 inHg
Wind13.4 mph W
Humidity62%
Visibility—
Dew point36°
Sat, 3161° / 41°0Partly cloudy
61 °Partly cloudy

Sioux Pass, Saturday, 31 October

Partly cloudy. High 61°, low 41°.

Pressure30.06 inHg
Wind9.9 mph SW
Humidity40%
Visibility—
Dew point30°

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.