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As of 11:28 MDT

Weather in Bison, MT

34°Current weather

Bison, Tuesday, 13 October, 11:28

Overcast. Feels like 29°. High 41°, low 22°.

Pressure30.15 inHg
Wind6.1 mph W
Humidity79%
Visibility5.9 mi
Dew point30°
Wed, 1445° / 28°0Mostly clear
45 °Mostly clear

Bison, Wednesday, 14 October

Mostly clear. High 45°, low 28°.

Pressure30.18 inHg
Wind10.8 mph W
Humidity74%
Visibility6.2 mi
Dew point29°
Thu, 1543° / 27°0Clear
43 °Clear

Bison, Thursday, 15 October

Clear. High 43°, low 27°.

Pressure30.68 inHg
Wind1.8 mph E
Humidity74%
Visibility6.2 mi
Dew point26°
Fri, 1652° / 33°0Mostly clear
52 °Mostly clear

Bison, Friday, 16 October

Mostly clear. High 52°, low 33°.

Pressure30.27 inHg
Wind13.9 mph W
Humidity51%
Visibility6.2 mi
Dew point27°
Sat, 1753° / 41°0Partly cloudy
53 °Partly cloudy

Bison, Saturday, 17 October

Partly cloudy. High 53°, low 41°.

Pressure29.85 inHg
Wind22.8 mph SW
Humidity45%
Visibility—
Dew point30°
Sun, 1849° / 32°0Clear
49 °Clear

Bison, Sunday, 18 October

Clear. High 49°, low 32°.

Pressure30.00 inHg
Wind9.4 mph SW
Humidity55%
Visibility—
Dew point29°
Mon, 1947° / 33°0Overcast
47 °Overcast

Bison, Monday, 19 October

Overcast. High 47°, low 33°.

Pressure29.68 inHg
Wind10.4 mph SW
Humidity46%
Visibility—
Dew point26°
Tue, 2041° / 30°0Light snow
41 °Light snow

Bison, Tuesday, 20 October

Light snow. High 41°, low 30°.

Pressure29.91 inHg
Wind8.1 mph SW
Humidity63%
Visibility—
Dew point27°
Wed, 2143° / 28°0Mostly clear
43 °Mostly clear

Bison, Wednesday, 21 October

Mostly clear. High 43°, low 28°.

Pressure30.03 inHg
Wind11.4 mph SW
Humidity56%
Visibility—
Dew point24°
Thu, 2240° / 29°0.01Light rain
40 °Light rain

Bison, Thursday, 22 October

Light rain. High 40°, low 29°.

Pressure29.91 inHg
Wind12.9 mph SW
Humidity77%
Visibility—
Dew point30°
Fri, 2338° / 28°0.27Snow
38 °Snow

Bison, Friday, 23 October

Snow. High 38°, low 28°.

Pressure30.39 inHg
Wind9.4 mph SW
Humidity80%
Visibility—
Dew point30°
Sat, 2440° / 29°0Overcast
40 °Overcast

Bison, Saturday, 24 October

Overcast. High 40°, low 29°.

Pressure30.36 inHg
Wind15.2 mph SW
Humidity77%
Visibility—
Dew point29°
Sun, 2544° / 27°0Overcast
44 °Overcast

Bison, Sunday, 25 October

Overcast. High 44°, low 27°.

Pressure30.53 inHg
Wind11.4 mph SW
Humidity80%
Visibility—
Dew point32°
Mon, 2647° / 32°0Overcast
47 °Overcast

Bison, Monday, 26 October

Overcast. High 47°, low 32°.

Pressure29.97 inHg
Wind10.2 mph SW
Humidity77%
Visibility—
Dew point34°
Tue, 2743° / 33°0.13Snow
43 °Snow

Bison, Tuesday, 27 October

Snow. High 43°, low 33°.

Pressure29.71 inHg
Wind17.8 mph W
Humidity61%
Visibility—
Dew point30°
Wed, 2840° / 33°0.14Snow
40 °Snow

Bison, Wednesday, 28 October

Snow. High 40°, low 33°.

Pressure30.00 inHg
Wind15.4 mph SW
Humidity81%
Visibility—
Dew point33°

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 Bison, 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 Bison, 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.