As of 18:07 MDT

Weather in Sourdough, MT

45°

Sourdough, Saturday, 24 October, 18:07

Clear. Feels like 45°. High 45°, low 26°.

Pressure30.21 inHg

Wind0 mph N

Humidity48%

Visibility6.2 mi

Dew point27°

See detailed hourly forecast

Sun, 2546° / 30°

46 °

Sourdough, Sunday, 25 October

Clear. High 46°, low 30°.

Pressure30.33 inHg

Wind6.4 mph NE

Humidity55%

Visibility6.2 mi

Dew point22°

Mon, 2647° / 26°

47 °

Sourdough, Monday, 26 October

Clear. High 47°, low 26°.

Pressure30.18 inHg

Wind2.4 mph SE

Humidity66%

Visibility6.2 mi

Dew point28°

Tue, 2743° / 33°

0.31

43 °

Sourdough, Tuesday, 27 October

Snow. High 43°, low 33°.

Pressure29.88 inHg

Wind10 mph SW

Humidity88%

Visibility4.4 mi

Dew point36°

Wed, 2850° / 30°

50 °

Sourdough, Wednesday, 28 October

Clear. High 50°, low 30°.

Pressure30.00 inHg

Wind3.9 mph SW

Humidity56%

Visibility6.2 mi

Dew point27°

Thu, 2945° / 28°

0.02

45 °

Sourdough, Thursday, 29 October

Light rain. High 45°, low 28°.

Pressure30.00 inHg

Wind6.6 mph N

Humidity81%

Visibility—

Dew point31°

Fri, 3047° / 34°

47 °

Sourdough, Friday, 30 October

Overcast. High 47°, low 34°.

Pressure29.80 inHg

Wind10.1 mph E

Humidity54%

Visibility—

Dew point28°

Sat, 3142° / 33°

42 °

Sourdough, Saturday, 31 October

Light rain. High 42°, low 33°.

Pressure29.91 inHg

Wind22.9 mph W

Humidity29%

Visibility—

Dew point10°

Sun, 0149° / 30°

49 °

Sourdough, Sunday, 1 November

Overcast. High 49°, low 30°.

Pressure30.06 inHg

Wind18.2 mph W

Humidity22%

Visibility—

Dew point7°

Mon, 0247° / 29°

47 °

Sourdough, Monday, 2 November

Overcast. High 47°, low 29°.

Pressure30.12 inHg

Wind7.9 mph SW

Humidity31%

Visibility—

Dew point12°

Tue, 0357° / 38°

57 °

Sourdough, Tuesday, 3 November

Mostly clear. High 57°, low 38°.

Pressure29.88 inHg

Wind14.3 mph SW

Humidity45%

Visibility—

Dew point29°

Wed, 0455° / 40°

0.02

55 °

Sourdough, Wednesday, 4 November

Light rain. High 55°, low 40°.

Pressure29.77 inHg

Wind17.7 mph W

Humidity43%

Visibility—

Dew point29°

Thu, 0557° / 38°

57 °

Sourdough, Thursday, 5 November

Overcast. High 57°, low 38°.

Pressure29.91 inHg

Wind15.3 mph SW

Humidity41%

Visibility—

Dew point25°

Fri, 0659° / 40°

59 °

Sourdough, Friday, 6 November

Overcast. High 59°, low 40°.

Pressure30.12 inHg

Wind12.3 mph SW

Humidity44%

Visibility—

Dew point31°

Sat, 0766° / 41°

66 °

Sourdough, Saturday, 7 November

Overcast. High 66°, low 41°.

Pressure29.97 inHg

Wind12.7 mph W

Humidity38%

Visibility—

Dew point31°

Sun, 0865° / 39°

65 °

Sourdough, Sunday, 8 November

Overcast. High 65°, low 39°.

Pressure29.56 inHg

Wind22.1 mph W

Humidity27%

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 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.