As of 05:01 MDT

Weather in Sourdough, MT

31°

Sourdough, Friday, 30 October, 05:01

Overcast. Feels like 31°. High 51°, low 31°.

Pressure30.12 inHg

Wind0 mph N

Humidity93%

Visibility6.2 mi

Dew point30°

See detailed hourly forecast

Sat, 3154° / 36°

0.01

54 °

Sourdough, Saturday, 31 October

Light rain. High 54°, low 36°.

Pressure30.00 inHg

Wind2.4 mph S

Humidity71%

Visibility6.2 mi

Dew point36°

Sun, 0148° / 35°

0.18

48 °

Sourdough, Sunday, 1 November

Light rain. High 48°, low 35°.

Pressure29.88 inHg

Wind4.5 mph NE

Humidity74%

Visibility6.2 mi

Dew point39°

Mon, 0251° / 33°

0.15

51 °

Sourdough, Monday, 2 November

Rain. High 51°, low 33°.

Pressure30.21 inHg

Wind5.3 mph NW

Humidity56%

Visibility6.2 mi

Dew point32°

Tue, 0353° / 30°

53 °

Sourdough, Tuesday, 3 November

Overcast. High 53°, low 30°.

Pressure30.24 inHg

Wind4.7 mph S

Humidity53%

Visibility—

Dew point27°

Wed, 0453° / 31°

53 °

Sourdough, Wednesday, 4 November

Partly cloudy. High 53°, low 31°.

Pressure30.18 inHg

Wind6.6 mph E

Humidity46%

Visibility—

Dew point27°

Thu, 0543° / 35°

43 °

Sourdough, Thursday, 5 November

Overcast. High 43°, low 35°.

Pressure29.85 inHg

Wind4.7 mph S

Humidity64%

Visibility—

Dew point27°

Fri, 0654° / 34°

54 °

Sourdough, Friday, 6 November

Overcast. High 54°, low 34°.

Pressure29.80 inHg

Wind12.9 mph W

Humidity42%

Visibility—

Dew point26°

Sat, 0761° / 35°

61 °

Sourdough, Saturday, 7 November

Clear. High 61°, low 35°.

Pressure30.12 inHg

Wind13.5 mph W

Humidity28%

Visibility—

Dew point19°

Sun, 0864° / 39°

64 °

Sourdough, Sunday, 8 November

Mostly clear. High 64°, low 39°.

Pressure30.03 inHg

Wind5.3 mph SW

Humidity29%

Visibility—

Dew point21°

Mon, 0960° / 43°

60 °

Sourdough, Monday, 9 November

Overcast. High 60°, low 43°.

Pressure29.62 inHg

Wind16.4 mph SW

Humidity35%

Visibility—

Dew point28°

Tue, 1052° / 35°

52 °

Sourdough, Tuesday, 10 November

Clear. High 52°, low 35°.

Pressure29.35 inHg

Wind16.9 mph SW

Humidity32%

Visibility—

Dew point20°

Wed, 1144° / 28°

44 °

Sourdough, Wednesday, 11 November

Partly cloudy. High 44°, low 28°.

Pressure29.38 inHg

Wind10.3 mph SW

Humidity32%

Visibility—

Dew point11°

Thu, 1237° / 31°

0.05

37 °

Sourdough, Thursday, 12 November

Light snow. High 37°, low 31°.

Pressure29.71 inHg

Wind23.4 mph W

Humidity44%

Visibility—

Dew point16°

Fri, 1334° / 30°

0.45

34 °

Sourdough, Friday, 13 November

Snow. High 34°, low 30°.

Pressure30.00 inHg

Wind17 mph W

Humidity69%

Visibility—

Dew point25°

Sat, 1436° / 31°

0.19

36 °

Sourdough, Saturday, 14 November

Snow. High 36°, low 31°.

Pressure30.09 inHg

Wind11.3 mph W

Humidity83%

Visibility—

Dew point29°

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.