Monthly outlook for Lodge Grass, MT: average high 64°, average low 41.8°. That is 4.6° above the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 17 October (78.3°), the coolest 25 October (32.2°).
64°/41.8°
Average high / low
+4.6°
Above normal
2 / 4
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
65.8°
58°
+4.3°
27 October – 5 November
61°
51.4°
+5.3°
6 November – 15 November
at normal
47.2°
—
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).
Sun, 1870° / 42°0
70 °
Lodge Grass, Sunday, 18 October
Partly cloudy. High 70°, low 42°.
Pressure30.09 inHg
Wind3.5 mph NE
Humidity36%
Visibility6.2 mi
Dew point34°
Mon, 1968° / 38°0
68 °
Lodge Grass, Monday, 19 October
Clear. High 68°, low 38°.
Pressure29.97 inHg
Wind2.1 mph SE
Humidity40%
Visibility6.2 mi
Dew point38°
Tue, 2069° / 42°0
69 °
Lodge Grass, Tuesday, 20 October
Clear. High 69°, low 42°.
Pressure29.97 inHg
Wind3 mph NW
Humidity37%
Visibility6.2 mi
Dew point39°
Wed, 2169° / 43°0
69 °
Lodge Grass, Wednesday, 21 October
Clear. High 69°, low 43°.
Pressure30.09 inHg
Wind1.8 mph N
Humidity55%
Visibility6.2 mi
Dew point45°
Thu, 2271° / 45°0
71 °
Lodge Grass, Thursday, 22 October
Clear. High 71°, low 45°.
Pressure29.83 inHg
Wind6.6 mph S
Humidity40%
Visibility—
Dew point40°
Fri, 2360° / 37°0.17
60 °
Lodge Grass, Friday, 23 October
Snow. High 60°, low 37°.
Pressure29.65 inHg
Wind14.1 mph NW
Humidity51%
Visibility—
Dew point41°
Sat, 2446° / 37°0.27
46 °
Lodge Grass, Saturday, 24 October
Snow. High 46°, low 37°.
Pressure30.53 inHg
Wind9.6 mph NW
Humidity50%
Visibility—
Dew point25°
Sun, 2560° / 32°0
60 °
Lodge Grass, Sunday, 25 October
Clear. High 60°, low 32°.
Pressure30.24 inHg
Wind8.2 mph SE
Humidity27%
Visibility—
Dew point18°
Mon, 2666° / 43°0
66 °
Lodge Grass, Monday, 26 October
Clear. High 66°, low 43°.
Pressure29.97 inHg
Wind7.2 mph SE
Humidity21%
Visibility—
Dew point19°
Tue, 2766° / 45°0
66 °
Lodge Grass, Tuesday, 27 October
Overcast. High 66°, low 45°.
Pressure29.68 inHg
Wind5.1 mph NW
Humidity20%
Visibility—
Dew point18°
Wed, 2863° / 49°0
63 °
Lodge Grass, Wednesday, 28 October
Overcast. High 63°, low 49°.
Pressure29.62 inHg
Wind16.6 mph NW
Humidity27%
Visibility—
Dew point25°
Thu, 2955° / 47°0
55 °
Lodge Grass, Thursday, 29 October
Overcast. High 55°, low 47°.
Pressure29.88 inHg
Wind9 mph NW
Humidity38%
Visibility—
Dew point28°
Fri, 3066° / 44°0
66 °
Lodge Grass, Friday, 30 October
Clear. High 66°, low 44°.
Pressure29.50 inHg
Wind10.3 mph S
Humidity24%
Visibility—
Dew point23°
Sat, 3151° / 42°0
51 °
Lodge Grass, Saturday, 31 October
Light rain. High 51°, low 42°.
Pressure29.62 inHg
Wind18 mph SW
Humidity32%
Visibility—
Dew point19°
Sun, 0165° / 43°0
65 °
Lodge Grass, Sunday, 1 November
Partly cloudy. High 65°, low 43°.
Pressure29.56 inHg
Wind29.1 mph SW
Humidity29%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0250° / 29°0.04
50 °
Lodge Grass, Monday, 2 November
Climate normal for this date — 60-year average.
Average high50°
Average low29°
Average precipitation0.04 in
Chance of precipitation20%
Record high73° (1965)
Record low-9° (1991)
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)
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.