As of 08:40 MDT

Weather in Sioux Pass, MT

51°

Sioux Pass, Saturday, 17 October, 08:40

Clear. Feels like 48°. High 74°, low 39°.

Pressure29.97 inHg

Wind10.4 mph SW

Humidity53%

Visibility6.2 mi

Dew point35°

See detailed hourly forecast

Sun, 1861° / 37°

61 °

Sioux Pass, Sunday, 18 October

Clear. High 61°, low 37°.

Pressure30.18 inHg

Wind7.6 mph N

Humidity38%

Visibility6.2 mi

Dew point30°

Mon, 1963° / 39°

63 °

Sioux Pass, Monday, 19 October

Clear. High 63°, low 39°.

Pressure30.12 inHg

Wind16.1 mph SE

Humidity46%

Visibility6.2 mi

Dew point37°

Tue, 2061° / 41°

61 °

Sioux Pass, Tuesday, 20 October

Mostly clear. High 61°, low 41°.

Pressure30.03 inHg

Wind2.7 mph E

Humidity68%

Visibility6.2 mi

Dew point46°

Wed, 2157° / 40°

57 °

Sioux Pass, Wednesday, 21 October

Overcast. High 57°, low 40°.

Pressure30.21 inHg

Wind10.9 mph SE

Humidity75%

Visibility—

Dew point45°

Thu, 2270° / 48°

70 °

Sioux Pass, Thursday, 22 October

Clear. High 70°, low 48°.

Pressure29.91 inHg

Wind12.2 mph SE

Humidity66%

Visibility—

Dew point50°

Fri, 2357° / 48°

0.17

57 °

Sioux Pass, Friday, 23 October

Light rain. High 57°, low 48°.

Pressure29.62 inHg

Wind23.7 mph N

Humidity84%

Visibility—

Dew point51°

Sat, 2447° / 40°

1.2

47 °

Sioux Pass, Saturday, 24 October

Heavy rain. High 47°, low 40°.

Pressure29.97 inHg

Wind29 mph N

Humidity60%

Visibility—

Dew point30°

Sun, 2546° / 34°

46 °

Sioux Pass, Sunday, 25 October

Overcast. High 46°, low 34°.

Pressure30.12 inHg

Wind18.5 mph E

Humidity40%

Visibility—

Dew point19°

Mon, 2652° / 41°

52 °

Sioux Pass, Monday, 26 October

Overcast. High 52°, low 41°.

Pressure29.56 inHg

Wind22.7 mph SW

Humidity62%

Visibility—

Dew point36°

Tue, 2760° / 46°

60 °

Sioux Pass, Tuesday, 27 October

Overcast. High 60°, low 46°.

Pressure29.38 inHg

Wind24.3 mph W

Humidity32%

Visibility—

Dew point29°

Wed, 2851° / 42°

51 °

Sioux Pass, Wednesday, 28 October

Partly cloudy. High 51°, low 42°.

Pressure29.80 inHg

Wind20.3 mph W

Humidity38%

Visibility—

Dew point23°

Thu, 2955° / 41°

55 °

Sioux Pass, Thursday, 29 October

Overcast. High 55°, low 41°.

Pressure29.59 inHg

Wind12 mph SW

Humidity34%

Visibility—

Dew point24°

Fri, 3042° / 34°

42 °

Sioux Pass, Friday, 30 October

Overcast. High 42°, low 34°.

Pressure29.80 inHg

Wind19.4 mph NE

Humidity53%

Visibility—

Dew point21°

Sat, 3141° / 27°

41 °

Sioux Pass, Saturday, 31 October

Overcast. High 41°, low 27°.

Pressure29.80 inHg

Wind14.2 mph NW

Humidity42%

Visibility—

Dew point14°

Sun, 0146° / 34°

46 °

Sioux Pass, Sunday, 1 November

Mostly clear. High 46°, low 34°.

Pressure29.97 inHg

Wind10.9 mph E

Humidity56%

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.