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As of 14:22 MDT

Weather in Sioux Pass, MT

46°Current weather

Sioux Pass, Tuesday, 13 October, 14:22

Overcast. Feels like 41°. High 46°, low 35°.

Pressure30.09 inHg
Wind8.9 mph W
Humidity75%
Visibility6.2 mi
Dew point38°
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, 1656° / 29°0Clear
56 °Clear

Sioux Pass, Friday, 16 October

Clear. High 56°, 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
Wind17.7 mph E
Humidity32%
Visibility—
Dew point29°
Wed, 2150° / 43°0Light rain
50 °Light rain

Sioux Pass, Wednesday, 21 October

Light rain. High 50°, low 43°.

Pressure30.06 inHg
Wind10 mph NW
Humidity55%
Visibility—
Dew point30°
Thu, 2251° / 38°0.01Light rain
51 °Light rain

Sioux Pass, Thursday, 22 October

Light rain. High 51°, low 38°.

Pressure29.91 inHg
Wind8.5 mph SE
Humidity43%
Visibility—
Dew point26°
Fri, 2350° / 40°0.06Light rain
50 °Light rain

Sioux Pass, Friday, 23 October

Light rain. High 50°, low 40°.

Pressure29.97 inHg
Wind20 mph NW
Humidity53%
Visibility—
Dew point31°
Sat, 2454° / 36°0Clear
54 °Clear

Sioux Pass, Saturday, 24 October

Clear. High 54°, low 36°.

Pressure30.30 inHg
Wind14.8 mph W
Humidity36%
Visibility—
Dew point22°
Sun, 2548° / 38°0Clear
48 °Clear

Sioux Pass, Sunday, 25 October

Clear. High 48°, low 38°.

Pressure30.36 inHg
Wind24.6 mph NW
Humidity39%
Visibility—
Dew point23°
Mon, 2650° / 31°0Overcast
50 °Overcast

Sioux Pass, Monday, 26 October

Overcast. High 50°, low 31°.

Pressure30.24 inHg
Wind14.5 mph SE
Humidity43%
Visibility—
Dew point22°
Tue, 2757° / 40°0Overcast
57 °Overcast

Sioux Pass, Tuesday, 27 October

Overcast. High 57°, low 40°.

Pressure29.53 inHg
Wind21.6 mph W
Humidity43%
Visibility—
Dew point32°
Wed, 2841° / 36°0.01Light rain
41 °Light rain

Sioux Pass, Wednesday, 28 October

Light rain. High 41°, low 36°.

Pressure30.06 inHg
Wind22.2 mph NW
Humidity83%
Visibility—
Dew point35°

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.