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As of 17:18 MDT

Weather in Sioux Pass, MT

86°Current weather

Sioux Pass, Saturday, 8 August, 17:18

Mostly clear. Feels like 84°. High 87°, low 51°.

Pressure29.80 inHg
Wind11.8 mph N
Humidity32%
Visibility6.2 mi
Dew point51°
Sun, 0989° / 52°0Clear
89 °Clear

Sioux Pass, Sunday, 9 August

Clear. High 89°, low 52°.

Pressure29.85 inHg
Wind14.7 mph E
Humidity29%
Visibility6.2 mi
Dew point46°
Mon, 1085° / 46°0Partly cloudy
85 °Partly cloudy

Sioux Pass, Monday, 10 August

Partly cloudy. High 85°, low 46°.

Pressure29.88 inHg
Wind12.9 mph NE
Humidity29%
Visibility6.2 mi
Dew point43°
Tue, 1188° / 56°0Mostly clear
88 °Mostly clear

Sioux Pass, Tuesday, 11 August

Mostly clear. High 88°, low 56°.

Pressure29.91 inHg
Wind6.9 mph E
Humidity29%
Visibility6.2 mi
Dew point46°
Wed, 1283° / 55°0Mostly clear
83 °Mostly clear

Sioux Pass, Wednesday, 12 August

Mostly clear. High 83°, low 55°.

Pressure29.94 inHg
Wind11.9 mph NE
Humidity32%
Visibility6.2 mi
Dew point47°
Thu, 1382° / 54°0Clear
82 °Clear

Sioux Pass, Thursday, 13 August

Clear. High 82°, low 54°.

Pressure30.06 inHg
Wind15.8 mph E
Humidity31%
Visibility—
Dew point40°
Fri, 1477° / 64°0.28Light rain
77 °Light rain

Sioux Pass, Friday, 14 August

Light rain. High 77°, low 64°.

Pressure29.91 inHg
Wind17.4 mph E
Humidity65%
Visibility—
Dew point55°
Sat, 1577° / 60°0Overcast
77 °Overcast

Sioux Pass, Saturday, 15 August

Overcast. High 77°, low 60°.

Pressure30.03 inHg
Wind11 mph N
Humidity39%
Visibility—
Dew point48°
Sun, 1685° / 62°0.22Rain
85 °Rain

Sioux Pass, Sunday, 16 August

Rain. High 85°, low 62°.

Pressure30.00 inHg
Wind13.8 mph E
Humidity38%
Visibility—
Dew point49°
Mon, 1793° / 69°0.01Light rain
93 °Light rain

Sioux Pass, Monday, 17 August

Light rain. High 93°, low 69°.

Pressure29.91 inHg
Wind17 mph NW
Humidity24%
Visibility—
Dew point45°
Tue, 1889° / 66°0Overcast
89 °Overcast

Sioux Pass, Tuesday, 18 August

Overcast. High 89°, low 66°.

Pressure29.97 inHg
Wind14.6 mph NE
Humidity29%
Visibility—
Dew point46°
Wed, 1976° / 64°0.15Light rain
76 °Light rain

Sioux Pass, Wednesday, 19 August

Light rain. High 76°, low 64°.

Pressure30.09 inHg
Wind8.1 mph E
Humidity79%
Visibility—
Dew point58°
Thu, 2086° / 63°0Partly cloudy
86 °Partly cloudy

Sioux Pass, Thursday, 20 August

Partly cloudy. High 86°, low 63°.

Pressure29.94 inHg
Wind11.7 mph E
Humidity40%
Visibility—
Dew point52°
Fri, 2194° / 67°0Partly cloudy
94 °Partly cloudy

Sioux Pass, Friday, 21 August

Partly cloudy. High 94°, low 67°.

Pressure29.77 inHg
Wind19.4 mph NE
Humidity22%
Visibility—
Dew point45°
Sat, 2275° / 51°0Overcast
75 °Overcast

Sioux Pass, Saturday, 22 August

Overcast. High 75°, low 51°.

Pressure30.15 inHg
Wind15 mph E
Humidity38%
Visibility—
Dew point40°
Sun, 2383° / 57°0Clear
83 °Clear

Sioux Pass, Sunday, 23 August

Clear. High 83°, low 57°.

Pressure30.06 inHg
Wind12.6 mph N
Humidity29%
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.