As of 08:00 MDT

Weather in Sourdough, MT

25°

Sourdough, Saturday, 24 October, 08:00

Clear. Feels like 15°. High 46°, low 25°.

Pressure30.45 inHg

Wind9.2 mph W

Humidity84%

Visibility6.2 mi

Dew point22°

See detailed hourly forecast

Sun, 2548° / 30°

48 °

Sourdough, Sunday, 25 October

Clear. High 48°, low 30°.

Pressure30.30 inHg

Wind6.5 mph NE

Humidity53%

Visibility6.2 mi

Dew point21°

Mon, 2647° / 26°

47 °

Sourdough, Monday, 26 October

Partly cloudy. High 47°, low 26°.

Pressure30.15 inHg

Wind1.7 mph SE

Humidity66%

Visibility6.2 mi

Dew point28°

Tue, 2748° / 34°

0.04

48 °

Sourdough, Tuesday, 27 October

Light rain. High 48°, low 34°.

Pressure29.88 inHg

Wind14.3 mph SW

Humidity56%

Visibility6.2 mi

Dew point27°

Wed, 2850° / 32°

50 °

Sourdough, Wednesday, 28 October

Clear. High 50°, low 32°.

Pressure29.97 inHg

Wind13.8 mph SW

Humidity52%

Visibility—

Dew point27°

Thu, 2949° / 32°

0.05

49 °

Sourdough, Thursday, 29 October

Light rain. High 49°, low 32°.

Pressure29.94 inHg

Wind7.9 mph NE

Humidity49%

Visibility—

Dew point27°

Fri, 3058° / 34°

58 °

Sourdough, Friday, 30 October

Overcast. High 58°, low 34°.

Pressure29.71 inHg

Wind9.5 mph SE

Humidity49%

Visibility—

Dew point30°

Sat, 3147° / 35°

47 °

Sourdough, Saturday, 31 October

Overcast. High 47°, low 35°.

Pressure29.88 inHg

Wind20.2 mph W

Humidity26%

Visibility—

Dew point12°

Sun, 0151° / 30°

51 °

Sourdough, Sunday, 1 November

Clear. High 51°, low 30°.

Pressure30.12 inHg

Wind19.9 mph W

Humidity27%

Visibility—

Dew point13°

Mon, 0260° / 32°

60 °

Sourdough, Monday, 2 November

Clear. High 60°, low 32°.

Pressure30.33 inHg

Wind8 mph SW

Humidity32%

Visibility—

Dew point20°

Tue, 0361° / 41°

61 °

Sourdough, Tuesday, 3 November

Overcast. High 61°, low 41°.

Pressure29.94 inHg

Wind13.2 mph SW

Humidity35%

Visibility—

Dew point24°

Wed, 0459° / 43°

59 °

Sourdough, Wednesday, 4 November

Overcast. High 59°, low 43°.

Pressure29.68 inHg

Wind22.5 mph SW

Humidity43%

Visibility—

Dew point31°

Thu, 0558° / 40°

58 °

Sourdough, Thursday, 5 November

Overcast. High 58°, low 40°.

Pressure29.68 inHg

Wind19.6 mph SW

Humidity41%

Visibility—

Dew point29°

Fri, 0659° / 38°

0.01

59 °

Sourdough, Friday, 6 November

Light rain. High 59°, low 38°.

Pressure29.53 inHg

Wind20.4 mph W

Humidity40%

Visibility—

Dew point31°

Sat, 0752° / 35°

52 °

Sourdough, Saturday, 7 November

Clear. High 52°, low 35°.

Pressure30.03 inHg

Wind30.2 mph W

Humidity32%

Visibility—

Dew point19°

Sun, 0863° / 33°

63 °

Sourdough, Sunday, 8 November

Partly cloudy. High 63°, low 33°.

Pressure29.88 inHg

Wind10 mph SW

Humidity25%

Visibility—

Dew point14°

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.