As of 04:42 MDT

Weather in Sourdough, MT

42°

Sourdough, Thursday, 22 October, 04:42

Overcast. Feels like 38°. High 68°, low 41°.

Pressure29.97 inHg

Wind6.9 mph S

Humidity87%

Visibility6.2 mi

Dew point38°

See detailed hourly forecast

Fri, 2354° / 34°

0.41

54 °

Sourdough, Friday, 23 October

Snow. High 54°, low 34°.

Pressure29.62 inHg

Wind8 mph SW

Humidity78%

Visibility6.2 mi

Dew point49°

Sat, 2446° / 26°

46 °

Sourdough, Saturday, 24 October

Clear. High 46°, low 26°.

Pressure30.36 inHg

Wind7.2 mph S

Humidity66%

Visibility6.2 mi

Dew point23°

Sun, 2547° / 29°

47 °

Sourdough, Sunday, 25 October

Clear. High 47°, low 29°.

Pressure30.27 inHg

Wind6.7 mph NE

Humidity54%

Visibility6.2 mi

Dew point26°

Mon, 2647° / 28°

47 °

Sourdough, Monday, 26 October

Clear. High 47°, low 28°.

Pressure30.27 inHg

Wind5.3 mph NE

Humidity66%

Visibility—

Dew point29°

Tue, 2747° / 36°

0.06

47 °

Sourdough, Tuesday, 27 October

Light rain. High 47°, low 36°.

Pressure30.00 inHg

Wind7.5 mph N

Humidity87%

Visibility—

Dew point35°

Wed, 2837° / 32°

0.31

37 °

Sourdough, Wednesday, 28 October

Snow. High 37°, low 32°.

Pressure30.30 inHg

Wind8.4 mph E

Humidity94%

Visibility—

Dew point33°

Thu, 2934° / 27°

0.2

34 °

Sourdough, Thursday, 29 October

Snow. High 34°, low 27°.

Pressure30.09 inHg

Wind4.2 mph S

Humidity100%

Visibility—

Dew point31°

Fri, 3048° / 25°

48 °

Sourdough, Friday, 30 October

Clear. High 48°, low 25°.

Pressure29.80 inHg

Wind12.9 mph W

Humidity86%

Visibility—

Dew point35°

Sat, 3152° / 32°

52 °

Sourdough, Saturday, 31 October

Overcast. High 52°, low 32°.

Pressure29.85 inHg

Wind10.4 mph W

Humidity51%

Visibility—

Dew point27°

Sun, 0153° / 33°

53 °

Sourdough, Sunday, 1 November

Clear. High 53°, low 33°.

Pressure30.06 inHg

Wind5.7 mph SE

Humidity42%

Visibility—

Dew point24°

Mon, 0258° / 34°

58 °

Sourdough, Monday, 2 November

Overcast. High 58°, low 34°.

Pressure30.03 inHg

Wind6.1 mph SW

Humidity32%

Visibility—

Dew point18°

Tue, 0362° / 37°

62 °

Sourdough, Tuesday, 3 November

Partly cloudy. High 62°, low 37°.

Pressure30.06 inHg

Wind7.1 mph SW

Humidity32%

Visibility—

Dew point22°

Wed, 0461° / 44°

0.01

61 °

Sourdough, Wednesday, 4 November

Light rain. High 61°, low 44°.

Pressure30.00 inHg

Wind14.9 mph W

Humidity48%

Visibility—

Dew point34°

Thu, 0563° / 41°

63 °

Sourdough, Thursday, 5 November

Clear. High 63°, low 41°.

Pressure30.00 inHg

Wind10.5 mph SW

Humidity40%

Visibility—

Dew point32°

Fri, 0664° / 46°

64 °

Sourdough, Friday, 6 November

Overcast. High 64°, low 46°.

Pressure29.85 inHg

Wind6.6 mph S

Humidity29%

Visibility—

Dew point25°

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.