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As of 23:35 MDT

Weather in Sioux Pass, MT

36°Current weather

Sioux Pass, Sunday, 18 October, 23:35

Clear. Feels like 30°. High 59°, low 36°.

Pressure30.24 inHg
Wind6.8 mph SE
Humidity67%
Visibility6.2 mi
Dew point27°
Mon, 1965° / 35°0Clear
65 °Clear

Sioux Pass, Monday, 19 October

Clear. High 65°, low 35°.

Pressure30.12 inHg
Wind15.7 mph SE
Humidity39%
Visibility6.2 mi
Dew point32°
Tue, 2062° / 34°0Overcast
62 °Overcast

Sioux Pass, Tuesday, 20 October

Overcast. High 62°, low 34°.

Pressure30.09 inHg
Wind4.9 mph N
Humidity62%
Visibility6.2 mi
Dew point44°
Wed, 2162° / 38°0Clear
62 °Clear

Sioux Pass, Wednesday, 21 October

Clear. High 62°, low 38°.

Pressure30.24 inHg
Wind10.1 mph SE
Humidity57%
Visibility6.2 mi
Dew point40°
Thu, 2268° / 49°0Clear
68 °Clear

Sioux Pass, Thursday, 22 October

Clear. High 68°, low 49°.

Pressure29.94 inHg
Wind5.8 mph SE
Humidity67%
Visibility6.2 mi
Dew point53°
Fri, 2372° / 53°0.04Light rain
72 °Light rain

Sioux Pass, Friday, 23 October

Light rain. High 72°, low 53°.

Pressure29.59 inHg
Wind15.3 mph SE
Humidity73%
Visibility—
Dew point56°
Sat, 2454° / 36°0.01Light rain
54 °Light rain

Sioux Pass, Saturday, 24 October

Light rain. High 54°, low 36°.

Pressure30.03 inHg
Wind21.8 mph NW
Humidity59%
Visibility—
Dew point35°
Sun, 2539° / 31°0.09Snow
39 °Snow

Sioux Pass, Sunday, 25 October

Snow. High 39°, low 31°.

Pressure30.30 inHg
Wind15.3 mph NW
Humidity41%
Visibility—
Dew point15°
Mon, 2637° / 30°0.04Light snow
37 °Light snow

Sioux Pass, Monday, 26 October

Light snow. High 37°, low 30°.

Pressure30.24 inHg
Wind5.8 mph W
Humidity74%
Visibility—
Dew point28°
Tue, 2756° / 31°0Overcast
56 °Overcast

Sioux Pass, Tuesday, 27 October

Overcast. High 56°, low 31°.

Pressure29.91 inHg
Wind13.9 mph SE
Humidity47%
Visibility—
Dew point26°
Wed, 2858° / 38°0Overcast
58 °Overcast

Sioux Pass, Wednesday, 28 October

Overcast. High 58°, low 38°.

Pressure29.71 inHg
Wind7.8 mph E
Humidity43%
Visibility—
Dew point28°
Thu, 2956° / 45°0Overcast
56 °Overcast

Sioux Pass, Thursday, 29 October

Overcast. High 56°, low 45°.

Pressure29.18 inHg
Wind18.8 mph NW
Humidity51%
Visibility—
Dew point35°
Fri, 3039° / 27°1.36Snow
39 °Snow

Sioux Pass, Friday, 30 October

Snow. High 39°, low 27°.

Pressure29.56 inHg
Wind36.4 mph NW
Humidity87%
Visibility—
Dew point25°
Sat, 3133° / 13°0Partly cloudy
33 °Partly cloudy

Sioux Pass, Saturday, 31 October

Partly cloudy. High 33°, low 13°.

Pressure29.97 inHg
Wind13.6 mph W
Humidity83%
Visibility—
Dew point24°
Sun, 0136° / 30°0Partly cloudy
36 °Partly cloudy

Sioux Pass, Sunday, 1 November

Partly cloudy. High 36°, low 30°.

Pressure29.88 inHg
Wind25.1 mph NW
Humidity93%
Visibility—
Dew point31°
Mon, 0237° / 34°0.06Light rain
37 °Light rain

Sioux Pass, Monday, 2 November

Light rain. High 37°, low 34°.

Pressure29.59 inHg
Wind16.5 mph SW
Humidity103%
Visibility—
Dew point36°

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.