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As of 08:56 MDT

Weather in Sioux Pass, MT

46°Current weather

Sioux Pass, Sunday, 18 October, 08:56

Overcast. Feels like 42°. High 58°, low 35°.

Pressure30.12 inHg
Wind7.6 mph W
Humidity62%
Visibility6.2 mi
Dew point34°
Mon, 1964° / 31°0Mostly clear
64 °Mostly clear

Sioux Pass, Monday, 19 October

Mostly clear. High 64°, low 31°.

Pressure30.12 inHg
Wind15.5 mph SE
Humidity39%
Visibility6.2 mi
Dew point32°
Tue, 2061° / 39°0Overcast
61 °Overcast

Sioux Pass, Tuesday, 20 October

Overcast. High 61°, low 39°.

Pressure30.06 inHg
Wind4.2 mph N
Humidity64%
Visibility6.2 mi
Dew point44°
Wed, 2160° / 38°0Mostly clear
60 °Mostly clear

Sioux Pass, Wednesday, 21 October

Mostly clear. High 60°, low 38°.

Pressure30.27 inHg
Wind8.3 mph SE
Humidity62%
Visibility6.2 mi
Dew point41°
Thu, 2269° / 49°0Clear
69 °Clear

Sioux Pass, Thursday, 22 October

Clear. High 69°, low 49°.

Pressure29.91 inHg
Wind12 mph SE
Humidity70%
Visibility—
Dew point51°
Fri, 2374° / 55°0.02Light rain
74 °Light rain

Sioux Pass, Friday, 23 October

Light rain. High 74°, low 55°.

Pressure29.44 inHg
Wind15.7 mph SW
Humidity69%
Visibility—
Dew point56°
Sat, 2444° / 37°0.01Light rain
44 °Light rain

Sioux Pass, Saturday, 24 October

Light rain. High 44°, low 37°.

Pressure30.39 inHg
Wind25.9 mph W
Humidity46%
Visibility—
Dew point21°
Sun, 2549° / 36°0Overcast
49 °Overcast

Sioux Pass, Sunday, 25 October

Overcast. High 49°, low 36°.

Pressure30.30 inHg
Wind14.8 mph SE
Humidity32%
Visibility—
Dew point16°
Mon, 2649° / 36°0Overcast
49 °Overcast

Sioux Pass, Monday, 26 October

Overcast. High 49°, low 36°.

Pressure30.21 inHg
Wind15.5 mph E
Humidity43%
Visibility—
Dew point22°
Tue, 2745° / 37°0.05Light rain
45 °Light rain

Sioux Pass, Tuesday, 27 October

Light rain. High 45°, low 37°.

Pressure29.88 inHg
Wind17.5 mph E
Humidity72%
Visibility—
Dew point35°
Wed, 2844° / 36°0.23Light rain
44 °Light rain

Sioux Pass, Wednesday, 28 October

Light rain. High 44°, low 36°.

Pressure29.44 inHg
Wind23.1 mph W
Humidity95%
Visibility—
Dew point35°
Thu, 2941° / 33°0.02Snow
41 °Snow

Sioux Pass, Thursday, 29 October

Snow. High 41°, low 33°.

Pressure29.83 inHg
Wind19.3 mph NW
Humidity64%
Visibility—
Dew point27°
Fri, 3032° / 29°0.14Light snow
32 °Light snow

Sioux Pass, Friday, 30 October

Light snow. High 32°, low 29°.

Pressure30.06 inHg
Wind14.6 mph NW
Humidity75%
Visibility—
Dew point25°
Sat, 3136° / 24°0Partly cloudy
36 °Partly cloudy

Sioux Pass, Saturday, 31 October

Partly cloudy. High 36°, low 24°.

Pressure30.03 inHg
Wind12 mph W
Humidity69%
Visibility—
Dew point22°
Sun, 0138° / 27°0Overcast
38 °Overcast

Sioux Pass, Sunday, 1 November

Overcast. High 38°, low 27°.

Pressure30.15 inHg
Wind12.6 mph SE
Humidity61%
Visibility—
Dew point22°
Mon, 0233° / 30°0.02Light snow
33 °Light snow

Sioux Pass, Monday, 2 November

Light snow. High 33°, low 30°.

Pressure29.91 inHg
Wind15.9 mph E
Humidity91%
Visibility—
Dew point28°

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.