Monthly outlook for St. Ignatius, MT: average high 48.3°, average low 35.9°. That is 0.1° above the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 7 days and 1.5 inches. The warmest day looks like 7 November (62.1°), the coolest 1 November (27.6°).
48.3°/35.9°
Average high / low
+0.1°
Above normal
4 / 7
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
45.4°
49.6°
-2.3°
3 November – 12 November
53.1°
44.5°
+4.8°
13 November – 22 November
at normal
40.4°
—
October records over 66 years
85.6°1 October 1992All-time high
-2.2°25 October 2020All-time low
Sun, 2548° / 34°0
48 °
St. Ignatius, Sunday, 25 October
Overcast. High 48°, low 34°.
Pressure30.24 inHg
Wind4.3 mph W
Humidity67%
Visibility6.2 mi
Dew point35°
Mon, 2645° / 34°0
45 °
St. Ignatius, Monday, 26 October
Light rain. High 45°, low 34°.
Pressure30.09 inHg
Wind2.9 mph W
Humidity75%
Visibility6.2 mi
Dew point34°
Tue, 2742° / 37°0.46
42 °
St. Ignatius, Tuesday, 27 October
Snow. High 42°, low 37°.
Pressure30.03 inHg
Wind3.8 mph SE
Humidity87%
Visibility6.2 mi
Dew point38°
Wed, 2849° / 34°0.03
49 °
St. Ignatius, Wednesday, 28 October
Light rain. High 49°, low 34°.
Pressure30.03 inHg
Wind0.9 mph W
Humidity74%
Visibility3.1 mi
Dew point37°
Thu, 2947° / 35°0.02
47 °
St. Ignatius, Thursday, 29 October
Light rain. High 47°, low 35°.
Pressure29.91 inHg
Wind3.5 mph NW
Humidity64%
Visibility—
Dew point31°
Fri, 3039° / 33°0.02
39 °
St. Ignatius, Friday, 30 October
Light rain. High 39°, low 33°.
Pressure29.94 inHg
Wind5.6 mph NW
Humidity82%
Visibility—
Dew point32°
Sat, 3142° / 30°0.07
42 °
St. Ignatius, Saturday, 31 October
Snow. High 42°, low 30°.
Pressure30.03 inHg
Wind11.7 mph W
Humidity57%
Visibility—
Dew point23°
Sun, 0146° / 28°0
46 °
St. Ignatius, Sunday, 1 November
Clear. High 46°, low 28°.
Pressure30.36 inHg
Wind6.1 mph S
Humidity49%
Visibility—
Dew point22°
Mon, 0245° / 32°0.01
45 °
St. Ignatius, Monday, 2 November
Light snow. High 45°, low 32°.
Pressure30.09 inHg
Wind4.3 mph S
Humidity57%
Visibility—
Dew point28°
Tue, 0351° / 35°0.03
51 °
St. Ignatius, Tuesday, 3 November
Light rain. High 51°, low 35°.
Pressure29.94 inHg
Wind5.4 mph S
Humidity67%
Visibility—
Dew point34°
Wed, 0450° / 40°0.02
50 °
St. Ignatius, Wednesday, 4 November
Light rain. High 50°, low 40°.
Pressure29.91 inHg
Wind6.4 mph S
Humidity61%
Visibility—
Dew point35°
Thu, 0545° / 40°0.09
45 °
St. Ignatius, Thursday, 5 November
Light rain. High 45°, low 40°.
Pressure29.94 inHg
Wind6.8 mph S
Humidity86%
Visibility—
Dew point39°
Fri, 0657° / 46°0
57 °
St. Ignatius, Friday, 6 November
Overcast. High 57°, low 46°.
Pressure30.09 inHg
Wind5.6 mph S
Humidity75%
Visibility—
Dew point46°
Sat, 0762° / 44°0
62 °
St. Ignatius, Saturday, 7 November
Overcast. High 62°, low 44°.
Pressure29.97 inHg
Wind5.5 mph SE
Humidity63%
Visibility—
Dew point43°
Sun, 0853° / 37°0.13
53 °
St. Ignatius, Sunday, 8 November
Light rain. High 53°, low 37°.
Pressure29.71 inHg
Wind18.5 mph SW
Humidity59%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0944° / 30°0.1
44 °
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°0.07
43 °
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°0.09
42 °
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°0.11
42 °
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°0.1
42 °
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°0.09
42 °
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°0.04
43 °
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°0.1
42 °
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°0.09
41 °
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°0.11
40 °
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°0.09
39 °
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°0.09
39 °
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)
Sat, 2138° / 25°0.09
38 °
St. Ignatius, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high38°
Average low25°
Average precipitation0.09 in
Chance of precipitation47%
Record high50° (1974)
Record low-8° (1977)
Sun, 2237° / 25°0.09
37 °
St. Ignatius, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high37°
Average low25°
Average precipitation0.09 in
Chance of precipitation50%
Record high55° (2017)
Record low-5° (1970)
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.