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As of 16:49 MDT

Weather in Sioux Pass, MT

65°Current weather

Sioux Pass, Monday, 19 October, 16:49

Clear. Feels like 63°. High 65°, low 35°.

Pressure30.03 inHg
Wind13.8 mph SE
Humidity33%
Visibility6.2 mi
Dew point36°
Tue, 2061° / 36°0Overcast
61 °Overcast

Sioux Pass, Tuesday, 20 October

Overcast. High 61°, low 36°.

Pressure30.06 inHg
Wind4.7 mph N
Humidity57%
Visibility6.2 mi
Dew point41°
Wed, 2161° / 34°0Clear
61 °Clear

Sioux Pass, Wednesday, 21 October

Clear. High 61°, low 34°.

Pressure30.24 inHg
Wind9.5 mph SE
Humidity61%
Visibility6.2 mi
Dew point41°
Thu, 2268° / 48°0Clear
68 °Clear

Sioux Pass, Thursday, 22 October

Clear. High 68°, low 48°.

Pressure29.91 inHg
Wind7.5 mph SE
Humidity64%
Visibility6.2 mi
Dew point52°
Fri, 2371° / 54°0Light rain
71 °Light rain

Sioux Pass, Friday, 23 October

Light rain. High 71°, low 54°.

Pressure29.56 inHg
Wind16 mph SE
Humidity74%
Visibility6.2 mi
Dew point59°
Sat, 2451° / 40°0.03Light rain
51 °Light rain

Sioux Pass, Saturday, 24 October

Light rain. High 51°, low 40°.

Pressure30.15 inHg
Wind25.7 mph W
Humidity53%
Visibility—
Dew point29°
Sun, 2541° / 33°0Overcast
41 °Overcast

Sioux Pass, Sunday, 25 October

Overcast. High 41°, low 33°.

Pressure30.39 inHg
Wind17.8 mph NW
Humidity51%
Visibility—
Dew point22°
Mon, 2638° / 30°0.04Light snow
38 °Light snow

Sioux Pass, Monday, 26 October

Light snow. High 38°, low 30°.

Pressure30.42 inHg
Wind15.3 mph NE
Humidity45%
Visibility—
Dew point17°
Tue, 2731° / 20°0Clear
31 °Clear

Sioux Pass, Tuesday, 27 October

Clear. High 31°, low 20°.

Pressure30.86 inHg
Wind10.6 mph N
Humidity45%
Visibility—
Dew point8°
Wed, 2843° / 22°0Clear
43 °Clear

Sioux Pass, Wednesday, 28 October

Clear. High 43°, low 22°.

Pressure30.53 inHg
Wind12.7 mph SE
Humidity36%
Visibility—
Dew point11°
Thu, 2952° / 32°0Partly cloudy
52 °Partly cloudy

Sioux Pass, Thursday, 29 October

Partly cloudy. High 52°, low 32°.

Pressure29.88 inHg
Wind11.6 mph NW
Humidity42%
Visibility—
Dew point26°
Fri, 3058° / 36°0Overcast
58 °Overcast

Sioux Pass, Friday, 30 October

Overcast. High 58°, low 36°.

Pressure29.85 inHg
Wind6 mph W
Humidity43%
Visibility—
Dew point27°
Sat, 3151° / 40°0Partly cloudy
51 °Partly cloudy

Sioux Pass, Saturday, 31 October

Partly cloudy. High 51°, low 40°.

Pressure30.00 inHg
Wind9.5 mph N
Humidity45%
Visibility—
Dew point27°
Sun, 0146° / 38°0Overcast
46 °Overcast

Sioux Pass, Sunday, 1 November

Overcast. High 46°, low 38°.

Pressure30.27 inHg
Wind6.9 mph SE
Humidity57%
Visibility—
Dew point29°
Mon, 0262° / 38°0Overcast
62 °Overcast

Sioux Pass, Monday, 2 November

Overcast. High 62°, low 38°.

Pressure29.91 inHg
Wind15.8 mph S
Humidity46%
Visibility—
Dew point32°
Tue, 0354° / 47°0.01Light rain
54 °Light rain

Sioux Pass, Tuesday, 3 November

Light rain. High 54°, low 47°.

Pressure29.47 inHg
Wind10.5 mph W
Humidity53%
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.