As of 22:38 MDT

Weather in St. Marie, MT

54°

St. Marie, Saturday, 17 October, 22:38

Overcast. Feels like 51°. High 72°, low 37°.

Pressure29.85 inHg

Wind12.6 mph W

Humidity44%

Visibility6.2 mi

Dew point32°

See detailed hourly forecast

Monthly outlook for St. Marie, MT: average high 58.3°, average low 39.7°. That is 4.3° above the climate normal for October. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 17 October (72.2°), the coolest 19 October (33.6°).

58.3°/39.7°

Average high / low

+4.3°

Above normal

1 / 2

Wet days / normal

0.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
17 October – 26 October	59.7°	52.9°	+3.8°
27 October – 5 November	55.9°	45.8°	+5.6°
6 November – 15 November	at normal	39.7°	—

October records over 66 years

86.2°2 October 1997All-time high

-4.4°30 October 1991All-time low

Sun, 1857° / 35°

57 °

St. Marie, Sunday, 18 October

Overcast. High 57°, low 35°.

Pressure30.21 inHg

Wind5.9 mph N

Humidity44%

Visibility6.2 mi

Dew point28°

Mon, 1962° / 34°

62 °

St. Marie, Monday, 19 October

Partly cloudy. High 62°, low 34°.

Pressure30.06 inHg

Wind15.9 mph SE

Humidity43%

Visibility6.2 mi

Dew point33°

Tue, 2063° / 39°

63 °

St. Marie, Tuesday, 20 October

Partly cloudy. High 63°, low 39°.

Pressure30.03 inHg

Wind5.7 mph NE

Humidity50%

Visibility6.2 mi

Dew point41°

Wed, 2158° / 38°

58 °

St. Marie, Wednesday, 21 October

Clear. High 58°, low 38°.

Pressure30.18 inHg

Wind11.5 mph SE

Humidity67%

Visibility6.2 mi

Dew point43°

Thu, 2266° / 47°

66 °

St. Marie, Thursday, 22 October

Overcast. High 66°, low 47°.

Pressure29.88 inHg

Wind10.2 mph SE

Humidity67%

Visibility—

Dew point47°

Fri, 2358° / 42°

0.22

58 °

St. Marie, Friday, 23 October

Rain. High 58°, low 42°.

Pressure29.65 inHg

Wind15.8 mph N

Humidity66%

Visibility—

Dew point46°

Sat, 2445° / 36°

45 °

St. Marie, Saturday, 24 October

Mostly clear. High 45°, low 36°.

Pressure30.50 inHg

Wind13.6 mph N

Humidity44%

Visibility—

Dew point22°

Sun, 2554° / 35°

54 °

St. Marie, Sunday, 25 October

Overcast. High 54°, low 35°.

Pressure30.24 inHg

Wind15.2 mph S

Humidity42%

Visibility—

Dew point24°

Mon, 2660° / 43°

60 °

St. Marie, Monday, 26 October

Partly cloudy. High 60°, low 43°.

Pressure29.97 inHg

Wind14.4 mph S

Humidity33%

Visibility—

Dew point25°

Tue, 2761° / 43°

61 °

St. Marie, Tuesday, 27 October

Clear. High 61°, low 43°.

Pressure29.62 inHg

Wind9 mph SE

Humidity32%

Visibility—

Dew point25°

Wed, 2856° / 44°

56 °

St. Marie, Wednesday, 28 October

Overcast. High 56°, low 44°.

Pressure29.59 inHg

Wind13.3 mph W

Humidity31%

Visibility—

Dew point23°

Thu, 2949° / 39°

49 °

St. Marie, Thursday, 29 October

Clear. High 49°, low 39°.

Pressure29.83 inHg

Wind24.4 mph W

Humidity39%

Visibility—

Dew point21°

Fri, 3063° / 40°

63 °

St. Marie, Friday, 30 October

Clear. High 63°, low 40°.

Pressure29.47 inHg

Wind15.9 mph SW

Humidity36%

Visibility—

Dew point27°

Sat, 3149° / 41°

49 °

St. Marie, Saturday, 31 October

Overcast. High 49°, low 41°.

Pressure29.53 inHg

Wind19.9 mph W

Humidity32%

Visibility—

Dew point17°

Sun, 0156° / 42°

0.01

56 °

St. Marie, Sunday, 1 November

Light rain. High 56°, low 42°.

Pressure29.50 inHg

Wind24 mph W

Humidity35%

Visibility—

Dew point24°

From day 17 onward the outlook is built from 60-year climate statistics

Mon, 0244° / 29°

0.02

44 °

St. Marie, Monday, 2 November

Climate normal for this date — 60-year average.

Average high44°

Average low29°

Average precipitation0.02 in

Chance of precipitation12%

Record high69° (1965)

Record low-3° (1991)

Tue, 0344° / 29°

0.02

44 °

St. Marie, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high44°

Average low29°

Average precipitation0.02 in

Chance of precipitation17%

Record high65° (1975)

Record low-8° (1991)

Wed, 0446° / 29°

0.03

46 °

St. Marie, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high46°

Average low29°

Average precipitation0.03 in

Chance of precipitation18%

Record high66° (1983)

Record low7° (1991)

Thu, 0544° / 28°

0.02

44 °

St. Marie, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high44°

Average low28°

Average precipitation0.02 in

Chance of precipitation17%

Record high69° (2020)

Record low-9° (2003)

Fri, 0643° / 26°

0.02

43 °

St. Marie, Friday, 6 November

Climate normal for this date — 60-year average.

Average high43°

Average low26°

Average precipitation0.02 in

Chance of precipitation12%

Record high64° (2010)

Record low0° (1991)

Sat, 0742° / 27°

0.02

42 °

St. Marie, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high42°

Average low27°

Average precipitation0.02 in

Chance of precipitation13%

Record high66° (1999)

Record low3° (1991)

Sun, 0841° / 26°

0.04

41 °

St. Marie, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high41°

Average low26°

Average precipitation0.04 in

Chance of precipitation20%

Record high64° (1999)

Record low-6° (2000)

Mon, 0938° / 24°

0.04

38 °

St. Marie, Monday, 9 November

Climate normal for this date — 60-year average.

Average high38°

Average low24°

Average precipitation0.04 in

Chance of precipitation20%

Record high61° (2016)

Record low0° (2000)

Tue, 1038° / 23°

0.03

38 °

St. Marie, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high38°

Average low23°

Average precipitation0.03 in

Chance of precipitation20%

Record high62° (1989)

Record low-6° (2022)

Wed, 1138° / 22°

0.02

38 °

St. Marie, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high38°

Average low22°

Average precipitation0.02 in

Chance of precipitation17%

Record high57° (1999)

Record low-12° (2022)

Thu, 1239° / 22°

0.03

39 °

St. Marie, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high39°

Average low22°

Average precipitation0.03 in

Chance of precipitation15%

Record high71° (1999)

Record low-6° (2012)

Fri, 1340° / 25°

0.02

40 °

St. Marie, Friday, 13 November

Climate normal for this date — 60-year average.

Average high40°

Average low25°

Average precipitation0.02 in

Chance of precipitation18%

Record high61° (1999)

Record low-6° (2014)

Sat, 1440° / 24°

0.03

40 °

St. Marie, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high40°

Average low24°

Average precipitation0.03 in

Chance of precipitation18%

Record high62° (2001)

Record low-6° (2014)

Sun, 1539° / 23°

0.02

39 °

St. Marie, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high39°

Average low23°

Average precipitation0.02 in

Chance of precipitation8%

Record high59° (2001)

Record low-9° (2014)

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 St. Marie, 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 St. Marie, 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.