Monthly outlook for Lodge Grass, MT: average high 56.8°, average low 35.7°. That is 0.9° above the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 19 October (73.7°), the coolest 31 October (9.8°).
56.8°/35.7°
Average high / low
+0.9°
Above normal
2 / 4
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
64.7°
57.6°
+4°
28 October – 6 November
43.5°
51°
-4.1°
7 November – 16 November
at normal
46.9°
—
October records over 66 years
90°1 October 2011All-time high
-17.7°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Forty Mile Colony (2 mi).
Mon, 1974° / 39°0
74 °
Lodge Grass, Monday, 19 October
Clear. High 74°, low 39°.
Pressure29.97 inHg
Wind1.3 mph SE
Humidity36%
Visibility6.2 mi
Dew point36°
Tue, 2069° / 42°0
69 °
Lodge Grass, Tuesday, 20 October
Clear. High 69°, low 42°.
Pressure29.97 inHg
Wind3.1 mph NW
Humidity36%
Visibility6.2 mi
Dew point38°
Wed, 2168° / 41°0
68 °
Lodge Grass, Wednesday, 21 October
Clear. High 68°, low 41°.
Pressure30.12 inHg
Wind1.2 mph N
Humidity54%
Visibility6.2 mi
Dew point44°
Thu, 2272° / 45°0
72 °
Lodge Grass, Thursday, 22 October
Clear. High 72°, low 45°.
Pressure29.83 inHg
Wind6.8 mph S
Humidity42%
Visibility—
Dew point40°
Fri, 2360° / 45°0.31
60 °
Lodge Grass, Friday, 23 October
Rain. High 60°, low 45°.
Pressure29.50 inHg
Wind25.2 mph W
Humidity62%
Visibility—
Dew point46°
Sat, 2449° / 40°0.01
49 °
Lodge Grass, Saturday, 24 October
Light rain. High 49°, low 40°.
Pressure30.42 inHg
Wind10.8 mph SE
Humidity50%
Visibility—
Dew point27°
Sun, 2563° / 40°0
63 °
Lodge Grass, Sunday, 25 October
Clear. High 63°, low 40°.
Pressure30.06 inHg
Wind6.4 mph SE
Humidity36%
Visibility—
Dew point28°
Mon, 2659° / 42°0
59 °
Lodge Grass, Monday, 26 October
Clear. High 59°, low 42°.
Pressure29.97 inHg
Wind5.7 mph NW
Humidity50%
Visibility—
Dew point34°
Tue, 2765° / 43°0
65 °
Lodge Grass, Tuesday, 27 October
Mostly clear. High 65°, low 43°.
Pressure29.59 inHg
Wind14.5 mph NW
Humidity58%
Visibility—
Dew point42°
Wed, 2859° / 42°0.01
59 °
Lodge Grass, Wednesday, 28 October
Light rain. High 59°, low 42°.
Pressure29.62 inHg
Wind24.4 mph W
Humidity19%
Visibility—
Dew point13°
Thu, 2953° / 33°0.02
53 °
Lodge Grass, Thursday, 29 October
Light snow. High 53°, low 33°.
Pressure29.68 inHg
Wind15.1 mph NE
Humidity34%
Visibility—
Dew point21°
Fri, 3029° / 14°0.48
29 °
Lodge Grass, Friday, 30 October
Snow. High 29°, low 14°.
Pressure30.24 inHg
Wind15.2 mph NW
Humidity83%
Visibility—
Dew point22°
Sat, 3133° / 10°0
33 °
Lodge Grass, Saturday, 31 October
Clear. High 33°, low 10°.
Pressure30.12 inHg
Wind6.9 mph SE
Humidity65%
Visibility—
Dew point17°
Sun, 0138° / 18°0
38 °
Lodge Grass, Sunday, 1 November
Partly cloudy. High 38°, low 18°.
Pressure30.06 inHg
Wind6.9 mph SE
Humidity94%
Visibility—
Dew point32°
Mon, 0249° / 34°0
49 °
Lodge Grass, Monday, 2 November
Overcast. High 49°, low 34°.
Pressure29.85 inHg
Wind7.2 mph S
Humidity85%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0350° / 29°0.03
50 °
Lodge Grass, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low29°
Average precipitation0.03 in
Chance of precipitation17%
Record high69° (1962)
Record low-10° (1991)
Wed, 0452° / 31°0.03
52 °
Lodge Grass, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low31°
Average precipitation0.03 in
Chance of precipitation18%
Record high71° (2020)
Record low4° (1995)
Thu, 0551° / 31°0.04
51 °
Lodge Grass, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low31°
Average precipitation0.04 in
Chance of precipitation25%
Record high75° (2020)
Record low0° (1961)
Fri, 0650° / 29°0.05
50 °
Lodge Grass, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low29°
Average precipitation0.05 in
Chance of precipitation20%
Record high73° (2010)
Record low0° (2003)
Sat, 0749° / 29°0.04
49 °
Lodge Grass, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low29°
Average precipitation0.04 in
Chance of precipitation23%
Record high75° (1999)
Record low6° (2017)
Sun, 0848° / 28°0.04
48 °
Lodge Grass, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low28°
Average precipitation0.04 in
Chance of precipitation28%
Record high74° (1999)
Record low4° (2000)
Mon, 0946° / 27°0.07
46 °
Lodge Grass, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low27°
Average precipitation0.07 in
Chance of precipitation23%
Record high68° (2001)
Record low-9° (1966)
Tue, 1046° / 26°0.06
46 °
Lodge Grass, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low26°
Average precipitation0.06 in
Chance of precipitation28%
Record high68° (2007)
Record low-21° (1986)
Wed, 1144° / 25°0.03
44 °
Lodge Grass, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low25°
Average precipitation0.03 in
Chance of precipitation17%
Record high66° (1999)
Record low-7° (1986)
Thu, 1247° / 25°0.03
47 °
Lodge Grass, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high47°
Average low25°
Average precipitation0.03 in
Chance of precipitation23%
Record high76° (1999)
Record low-11° (1986)
Fri, 1347° / 27°0.05
47 °
Lodge Grass, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low27°
Average precipitation0.05 in
Chance of precipitation25%
Record high72° (2025)
Record low-12° (1986)
Sat, 1446° / 27°0.05
46 °
Lodge Grass, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low27°
Average precipitation0.05 in
Chance of precipitation25%
Record high72° (2025)
Record low-4° (1978)
Sun, 1547° / 26°0.04
47 °
Lodge Grass, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low26°
Average precipitation0.04 in
Chance of precipitation20%
Record high70° (2021)
Record low-5° (1964)
Mon, 1647° / 27°0.03
47 °
Lodge Grass, Monday, 16 November
Climate normal for this date — 60-year average.
Average high47°
Average low27°
Average precipitation0.03 in
Chance of precipitation15%
Record high66° (2001)
Record low-7° (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 Lodge Grass, 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 Lodge Grass, 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.