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As of 23:09 MDT

Weather in Sioux Pass, MT

44°Current weather

Sioux Pass, Tuesday, 20 October, 23:09

Partly cloudy. Feels like 42°. High 65°, low 35°.

Pressure30.21 inHg
Wind4.3 mph N
Humidity70%
Visibility6.2 mi
Dew point34°
Wed, 2166° / 31°0Clear
66 °Clear

Sioux Pass, Wednesday, 21 October

Clear. High 66°, low 31°.

Pressure30.21 inHg
Wind9.3 mph SE
Humidity55%
Visibility6.2 mi
Dew point40°
Thu, 2269° / 47°0Clear
69 °Clear

Sioux Pass, Thursday, 22 October

Clear. High 69°, low 47°.

Pressure29.91 inHg
Wind5.7 mph SE
Humidity60%
Visibility6.2 mi
Dew point50°
Fri, 2373° / 47°0.03Light rain
73 °Light rain

Sioux Pass, Friday, 23 October

Light rain. High 73°, low 47°.

Pressure29.59 inHg
Wind10.3 mph SE
Humidity63%
Visibility6.2 mi
Dew point54°
Sat, 2447° / 36°0.04Light rain
47 °Light rain

Sioux Pass, Saturday, 24 October

Light rain. High 47°, low 36°.

Pressure30.39 inHg
Wind12.9 mph NW
Humidity60%
Visibility6.2 mi
Dew point27°
Sun, 2547° / 31°0Overcast
47 °Overcast

Sioux Pass, Sunday, 25 October

Overcast. High 47°, low 31°.

Pressure30.47 inHg
Wind11.2 mph NE
Humidity56%
Visibility—
Dew point29°
Mon, 2640° / 30°0Clear
40 °Clear

Sioux Pass, Monday, 26 October

Clear. High 40°, low 30°.

Pressure30.68 inHg
Wind9.4 mph NE
Humidity66%
Visibility—
Dew point27°
Tue, 2751° / 27°0Clear
51 °Clear

Sioux Pass, Tuesday, 27 October

Clear. High 51°, low 27°.

Pressure30.24 inHg
Wind17.4 mph S
Humidity61%
Visibility—
Dew point29°
Wed, 2847° / 34°0Clear
47 °Clear

Sioux Pass, Wednesday, 28 October

Clear. High 47°, low 34°.

Pressure30.36 inHg
Wind15.6 mph NW
Humidity40%
Visibility—
Dew point18°
Thu, 2948° / 33°0Clear
48 °Clear

Sioux Pass, Thursday, 29 October

Clear. High 48°, low 33°.

Pressure30.24 inHg
Wind8.3 mph SE
Humidity46%
Visibility—
Dew point23°
Fri, 3061° / 38°0Partly cloudy
61 °Partly cloudy

Sioux Pass, Friday, 30 October

Partly cloudy. High 61°, low 38°.

Pressure29.47 inHg
Wind17.8 mph W
Humidity31%
Visibility—
Dew point24°
Sat, 3150° / 36°0Overcast
50 °Overcast

Sioux Pass, Saturday, 31 October

Overcast. High 50°, low 36°.

Pressure29.65 inHg
Wind15.8 mph W
Humidity29%
Visibility—
Dew point15°
Sun, 0155° / 37°0Overcast
55 °Overcast

Sioux Pass, Sunday, 1 November

Overcast. High 55°, low 37°.

Pressure29.80 inHg
Wind17.9 mph NW
Humidity32%
Visibility—
Dew point21°
Mon, 0253° / 39°0Partly cloudy
53 °Partly cloudy

Sioux Pass, Monday, 2 November

Partly cloudy. High 53°, low 39°.

Pressure30.27 inHg
Wind13.7 mph SE
Humidity32%
Visibility—
Dew point19°
Tue, 0369° / 48°0Overcast
69 °Overcast

Sioux Pass, Tuesday, 3 November

Overcast. High 69°, low 48°.

Pressure29.85 inHg
Wind23 mph NW
Humidity36%
Visibility—
Dew point36°
Wed, 0471° / 51°0Partly cloudy
71 °Partly cloudy

Sioux Pass, Wednesday, 4 November

Partly cloudy. High 71°, low 51°.

Pressure30.00 inHg
Wind7.5 mph W
Humidity43%
Visibility—
Dew point41°

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.