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As of 21:48 MDT

Weather in Sourdough, MT

51°Current weather

Sourdough, Thursday, 22 October, 21:48

Partly cloudy. Feels like 49°. High 69°, low 43°.

Pressure29.74 inHg
Wind5.7 mph NE
Humidity70%
Visibility6.2 mi
Dew point41°
Fri, 2351° / 30°0.61Snow
51 °Snow

Sourdough, Friday, 23 October

Snow. High 51°, low 30°.

Pressure29.65 inHg
Wind13.4 mph SW
Humidity92%
Visibility1.6 mi
Dew point49°
Sat, 2444° / 26°0Clear
44 °Clear

Sourdough, Saturday, 24 October

Clear. High 44°, low 26°.

Pressure30.39 inHg
Wind7.2 mph S
Humidity70%
Visibility6.2 mi
Dew point25°
Sun, 2546° / 28°0Clear
46 °Clear

Sourdough, Sunday, 25 October

Clear. High 46°, low 28°.

Pressure30.30 inHg
Wind7.4 mph NE
Humidity59%
Visibility6.2 mi
Dew point25°
Mon, 2647° / 27°0Clear
47 °Clear

Sourdough, Monday, 26 October

Clear. High 47°, low 27°.

Pressure30.24 inHg
Wind1.1 mph E
Humidity63%
Visibility6.2 mi
Dew point28°
Tue, 2743° / 34°0.04Light rain
43 °Light rain

Sourdough, Tuesday, 27 October

Light rain. High 43°, low 34°.

Pressure30.00 inHg
Wind10.7 mph N
Humidity85%
Visibility—
Dew point35°
Wed, 2838° / 26°0.06Snow
38 °Snow

Sourdough, Wednesday, 28 October

Snow. High 38°, low 26°.

Pressure30.30 inHg
Wind10.1 mph NE
Humidity67%
Visibility—
Dew point28°
Thu, 2929° / 23°0.04Light snow
29 °Light snow

Sourdough, Thursday, 29 October

Light snow. High 29°, low 23°.

Pressure30.30 inHg
Wind7.5 mph E
Humidity81%
Visibility—
Dew point22°
Fri, 3032° / 26°0.05Light snow
32 °Light snow

Sourdough, Friday, 30 October

Light snow. High 32°, low 26°.

Pressure29.97 inHg
Wind5.3 mph N
Humidity89%
Visibility—
Dew point26°
Sat, 3139° / 27°0Overcast
39 °Overcast

Sourdough, Saturday, 31 October

Overcast. High 39°, low 27°.

Pressure29.88 inHg
Wind15.7 mph SW
Humidity65%
Visibility—
Dew point25°
Sun, 0138° / 28°0.02Light snow
38 °Light snow

Sourdough, Sunday, 1 November

Light snow. High 38°, low 28°.

Pressure30.15 inHg
Wind11 mph W
Humidity82%
Visibility—
Dew point28°
Mon, 0243° / 25°0Partly cloudy
43 °Partly cloudy

Sourdough, Monday, 2 November

Partly cloudy. High 43°, low 25°.

Pressure30.42 inHg
Wind6.8 mph W
Humidity50%
Visibility—
Dew point19°
Tue, 0347° / 24°0Clear
47 °Clear

Sourdough, Tuesday, 3 November

Clear. High 47°, low 24°.

Pressure30.50 inHg
Wind8.4 mph SW
Humidity41%
Visibility—
Dew point17°
Wed, 0453° / 29°0Partly cloudy
53 °Partly cloudy

Sourdough, Wednesday, 4 November

Partly cloudy. High 53°, low 29°.

Pressure30.30 inHg
Wind8.7 mph W
Humidity35%
Visibility—
Dew point18°
Thu, 0561° / 35°0Clear
61 °Clear

Sourdough, Thursday, 5 November

Clear. High 61°, low 35°.

Pressure30.12 inHg
Wind9.7 mph SW
Humidity38%
Visibility—
Dew point26°
Fri, 0663° / 38°0Clear
63 °Clear

Sourdough, Friday, 6 November

Clear. High 63°, low 38°.

Pressure29.91 inHg
Wind11.3 mph SW
Humidity34%
Visibility—
Dew point26°

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 Sourdough, 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 Sourdough, 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.