As of 22:00 MDT

Weather in St. Ignatius, MT

49°Current weather

St. Ignatius, Thursday, 22 October, 22:00

Overcast. Feels like 49°. High 67°, low 38°.

Pressure29.65 inHg
Wind0.6 mph SE
Humidity74%
Visibility6.2 mi
Dew point41°

Monthly outlook for St. Ignatius, MT: average high 44.3°, average low 31.2°. That is 2.8° below the climate normal for October. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 7 days and 1.5 inches. The warmest day looks like 22 October (67.3°), the coolest 29 October (22.9°).

44.3°/31.2°
Average high / low
−2.8°
Below normal
6 / 7
Wet days / normal
1.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
22 October – 31 October45.1°51°-3.3°
1 November – 10 November42.8°45.4°-1.5°
11 November – 20 Novemberat normal41.3°—

October records over 66 years

85.6°1 October 1992All-time high
-2.2°25 October 2020All-time low
Fri, 2348° / 36°0.41Rain
48 °Rain

St. Ignatius, Friday, 23 October

Rain. High 48°, low 36°.

Pressure29.91 inHg
Wind1.1 mph N
Humidity92%
Visibility1.8 mi
Dew point45°
Sat, 2452° / 30°0Clear
52 °Clear

St. Ignatius, Saturday, 24 October

Clear. High 52°, low 30°.

Pressure30.24 inHg
Wind1.5 mph W
Humidity65%
Visibility6.2 mi
Dew point37°
Sun, 2549° / 36°0Partly cloudy
49 °Partly cloudy

St. Ignatius, Sunday, 25 October

Partly cloudy. High 49°, low 36°.

Pressure30.21 inHg
Wind4.5 mph W
Humidity70%
Visibility6.2 mi
Dew point36°
Mon, 2646° / 34°0Overcast
46 °Overcast

St. Ignatius, Monday, 26 October

Overcast. High 46°, low 34°.

Pressure30.15 inHg
Wind3.2 mph W
Humidity72%
Visibility6.2 mi
Dew point34°
Tue, 2740° / 36°0.17Light rain
40 °Light rain

St. Ignatius, Tuesday, 27 October

Light rain. High 40°, low 36°.

Pressure30.09 inHg
Wind2.2 mph SE
Humidity83%
Visibility—
Dew point35°
Wed, 2840° / 34°0.1Snow
40 °Snow

St. Ignatius, Wednesday, 28 October

Snow. High 40°, low 34°.

Pressure30.39 inHg
Wind3.5 mph W
Humidity87%
Visibility—
Dew point36°
Thu, 2938° / 23°0Mostly clear
38 °Mostly clear

St. Ignatius, Thursday, 29 October

Mostly clear. High 38°, low 23°.

Pressure30.15 inHg
Wind4.4 mph SE
Humidity65%
Visibility—
Dew point22°
Fri, 3035° / 28°0.13Snow
35 °Snow

St. Ignatius, Friday, 30 October

Snow. High 35°, low 28°.

Pressure30.03 inHg
Wind2.7 mph SE
Humidity88%
Visibility—
Dew point29°
Sat, 3136° / 28°0.17Snow
36 °Snow

St. Ignatius, Saturday, 31 October

Snow. High 36°, low 28°.

Pressure30.06 inHg
Wind5.4 mph S
Humidity81%
Visibility—
Dew point29°
Sun, 0137° / 32°0.13Snow
37 °Snow

St. Ignatius, Sunday, 1 November

Snow. High 37°, low 32°.

Pressure30.36 inHg
Wind3.4 mph E
Humidity97%
Visibility—
Dew point34°
Mon, 0239° / 25°0Clear
39 °Clear

St. Ignatius, Monday, 2 November

Clear. High 39°, low 25°.

Pressure30.62 inHg
Wind6.4 mph SE
Humidity79%
Visibility—
Dew point29°
Tue, 0341° / 26°0Partly cloudy
41 °Partly cloudy

St. Ignatius, Tuesday, 3 November

Partly cloudy. High 41°, low 26°.

Pressure30.71 inHg
Wind4.8 mph SE
Humidity84%
Visibility—
Dew point31°
Wed, 0444° / 29°0Overcast
44 °Overcast

St. Ignatius, Wednesday, 4 November

Overcast. High 44°, low 29°.

Pressure30.56 inHg
Wind4.5 mph SE
Humidity77%
Visibility—
Dew point31°
Thu, 0547° / 31°0Clear
47 °Clear

St. Ignatius, Thursday, 5 November

Clear. High 47°, low 31°.

Pressure30.39 inHg
Wind4.4 mph SE
Humidity72%
Visibility—
Dew point33°
Fri, 0649° / 33°0Mostly clear
49 °Mostly clear

St. Ignatius, Friday, 6 November

Mostly clear. High 49°, low 33°.

Pressure30.18 inHg
Wind5.2 mph SE
Humidity67%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0744° / 30°0.13Climate normal
44 °Climate normal

St. Ignatius, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high44°
Average low30°
Average precipitation0.13 in
Chance of precipitation47%
Record high58° (1978)
Record low8° (2000)
Sun, 0844° / 30°0.09Climate normal
44 °Climate normal

St. Ignatius, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high44°
Average low30°
Average precipitation0.09 in
Chance of precipitation50%
Record high60° (2016)
Record low9° (2000)
Mon, 0944° / 30°0.1Climate normal
44 °Climate normal

St. Ignatius, Monday, 9 November

Climate normal for this date — 60-year average.

Average high44°
Average low30°
Average precipitation0.1 in
Chance of precipitation48%
Record high64° (2016)
Record low11° (1986)
Tue, 1043° / 28°0.07Climate normal
43 °Climate normal

St. Ignatius, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high43°
Average low28°
Average precipitation0.07 in
Chance of precipitation40%
Record high62° (2016)
Record low-10° (1986)
Wed, 1142° / 27°0.09Climate normal
42 °Climate normal

St. Ignatius, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high42°
Average low27°
Average precipitation0.09 in
Chance of precipitation37%
Record high61° (2016)
Record low-2° (2000)
Thu, 1242° / 28°0.11Climate normal
42 °Climate normal

St. Ignatius, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high42°
Average low28°
Average precipitation0.11 in
Chance of precipitation48%
Record high66° (1999)
Record low0° (1986)
Fri, 1342° / 29°0.1Climate normal
42 °Climate normal

St. Ignatius, Friday, 13 November

Climate normal for this date — 60-year average.

Average high42°
Average low29°
Average precipitation0.1 in
Chance of precipitation52%
Record high65° (2025)
Record low4° (2000)
Sat, 1442° / 28°0.09Climate normal
42 °Climate normal

St. Ignatius, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high42°
Average low28°
Average precipitation0.09 in
Chance of precipitation40%
Record high62° (1999)
Record low2° (2000)
Sun, 1543° / 27°0.04Climate normal
43 °Climate normal

St. Ignatius, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high43°
Average low27°
Average precipitation0.04 in
Chance of precipitation30%
Record high62° (2021)
Record low5° (2014)
Mon, 1642° / 28°0.1Climate normal
42 °Climate normal

St. Ignatius, Monday, 16 November

Climate normal for this date — 60-year average.

Average high42°
Average low28°
Average precipitation0.1 in
Chance of precipitation52%
Record high57° (2001)
Record low6° (1996)
Tue, 1741° / 29°0.09Climate normal
41 °Climate normal

St. Ignatius, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high41°
Average low29°
Average precipitation0.09 in
Chance of precipitation52%
Record high57° (1976)
Record low4° (1961)
Wed, 1840° / 28°0.11Climate normal
40 °Climate normal

St. Ignatius, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high40°
Average low28°
Average precipitation0.11 in
Chance of precipitation52%
Record high60° (2008)
Record low1° (2022)
Thu, 1939° / 27°0.09Climate normal
39 °Climate normal

St. Ignatius, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high39°
Average low27°
Average precipitation0.09 in
Chance of precipitation43%
Record high53° (2008)
Record low0° (2000)
Fri, 2039° / 26°0.09Climate normal
39 °Climate normal

St. Ignatius, Friday, 20 November

Climate normal for this date — 60-year average.

Average high39°
Average low26°
Average precipitation0.09 in
Chance of precipitation48%
Record high51° (2001)
Record low-4° (1977)

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. Ignatius, 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. Ignatius, 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.