Monthly outlook for Forest Green, MT: average high 44.2°, average low 25.9°. That is 1.5° above the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 5 days and 0.8 inches. The warmest day looks like 22 October (59°), the coolest 29 October (13.5°).
44.2°/25.9°
Average high / low
+1.5°
Above normal
3 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
41°
42.9°
-1°
1 November – 10 November
49.5°
37.9°
+6.4°
11 November – 20 November
at normal
34.5°
—
October records over 66 years
76.6°1 October 2011All-time high
-18.2°10 October 2009All-time low
Fri, 2341° / 23°0.65
41 °
Forest Green, Friday, 23 October
Snow. High 41°, low 23°.
Pressure29.77 inHg
Wind15.5 mph N
Humidity99%
Visibility0.7 mi
Dew point38°
Sat, 2440° / 19°0
40 °
Forest Green, Saturday, 24 October
Clear. High 40°, low 19°.
Pressure30.33 inHg
Wind5.6 mph S
Humidity80%
Visibility5.0 mi
Dew point19°
Sun, 2541° / 24°0
41 °
Forest Green, Sunday, 25 October
Clear. High 41°, low 24°.
Pressure30.21 inHg
Wind7.9 mph SE
Humidity68%
Visibility6.2 mi
Dew point20°
Mon, 2644° / 26°0
44 °
Forest Green, Monday, 26 October
Partly cloudy. High 44°, low 26°.
Pressure30.18 inHg
Wind5.2 mph SE
Humidity70%
Visibility6.2 mi
Dew point26°
Tue, 2738° / 29°0.18
38 °
Forest Green, Tuesday, 27 October
Snow. High 38°, low 29°.
Pressure29.94 inHg
Wind9.4 mph SE
Humidity86%
Visibility—
Dew point34°
Wed, 2830° / 14°0.25
30 °
Forest Green, Wednesday, 28 October
Snow. High 30°, low 14°.
Pressure30.45 inHg
Wind10.2 mph NW
Humidity75%
Visibility—
Dew point17°
Thu, 2938° / 14°0
38 °
Forest Green, Thursday, 29 October
Clear. High 38°, low 14°.
Pressure30.12 inHg
Wind4.5 mph S
Humidity51%
Visibility—
Dew point15°
Fri, 3042° / 25°0
42 °
Forest Green, Friday, 30 October
Overcast. High 42°, low 25°.
Pressure29.77 inHg
Wind9 mph W
Humidity61%
Visibility—
Dew point27°
Sat, 3137° / 23°0
37 °
Forest Green, Saturday, 31 October
Partly cloudy. High 37°, low 23°.
Pressure29.83 inHg
Wind14.3 mph W
Humidity65%
Visibility—
Dew point23°
Sun, 0141° / 22°0
41 °
Forest Green, Sunday, 1 November
Overcast. High 41°, low 22°.
Pressure29.97 inHg
Wind9.3 mph SW
Humidity54%
Visibility—
Dew point21°
Mon, 0244° / 26°0
44 °
Forest Green, Monday, 2 November
Mostly clear. High 44°, low 26°.
Pressure30.21 inHg
Wind7.4 mph W
Humidity42%
Visibility—
Dew point18°
Tue, 0354° / 32°0
54 °
Forest Green, Tuesday, 3 November
Clear. High 54°, low 32°.
Pressure30.06 inHg
Wind5.4 mph SW
Humidity27%
Visibility—
Dew point15°
Wed, 0453° / 35°0
53 °
Forest Green, Wednesday, 4 November
Clear. High 53°, low 35°.
Pressure29.91 inHg
Wind9.9 mph SW
Humidity30%
Visibility—
Dew point17°
Thu, 0550° / 34°0
50 °
Forest Green, Thursday, 5 November
Partly cloudy. High 50°, low 34°.
Pressure29.88 inHg
Wind12.3 mph SW
Humidity48%
Visibility—
Dew point26°
Fri, 0654° / 36°0
54 °
Forest Green, Friday, 6 November
Overcast. High 54°, low 36°.
Pressure29.80 inHg
Wind16.1 mph SW
Humidity55%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0738° / 23°0.05
38 °
Forest Green, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high38°
Average low23°
Average precipitation0.05 in
Chance of precipitation32%
Record high58° (1999)
Record low-3° (2017)
Sun, 0837° / 22°0.07
37 °
Forest Green, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high37°
Average low22°
Average precipitation0.07 in
Chance of precipitation43%
Record high56° (2016)
Record low-9° (2018)
Mon, 0936° / 21°0.05
36 °
Forest Green, Monday, 9 November
Climate normal for this date — 60-year average.
Average high36°
Average low21°
Average precipitation0.05 in
Chance of precipitation25%
Record high57° (2016)
Record low-11° (1986)
Tue, 1035° / 20°0.04
35 °
Forest Green, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high35°
Average low20°
Average precipitation0.04 in
Chance of precipitation23%
Record high53° (2016)
Record low-21° (1986)
Wed, 1134° / 19°0.03
34 °
Forest Green, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high34°
Average low19°
Average precipitation0.03 in
Chance of precipitation22%
Record high56° (2016)
Record low-11° (2019)
Thu, 1236° / 20°0.04
36 °
Forest Green, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high36°
Average low20°
Average precipitation0.04 in
Chance of precipitation27%
Record high57° (1999)
Record low-22° (1986)
Fri, 1336° / 21°0.05
36 °
Forest Green, Friday, 13 November
Climate normal for this date — 60-year average.
Average high36°
Average low21°
Average precipitation0.05 in
Chance of precipitation25%
Record high55° (1999)
Record low-1° (2000)
Sat, 1435° / 20°0.05
35 °
Forest Green, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high35°
Average low20°
Average precipitation0.05 in
Chance of precipitation33%
Record high56° (1999)
Record low-4° (1978)
Sun, 1535° / 19°0.03
35 °
Forest Green, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high35°
Average low19°
Average precipitation0.03 in
Chance of precipitation20%
Record high57° (1999)
Record low-2° (2014)
Mon, 1635° / 20°0.04
35 °
Forest Green, Monday, 16 November
Climate normal for this date — 60-year average.
Average high35°
Average low20°
Average precipitation0.04 in
Chance of precipitation30%
Record high50° (1999)
Record low-5° (1961)
Tue, 1734° / 20°0.04
34 °
Forest Green, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high34°
Average low20°
Average precipitation0.04 in
Chance of precipitation35%
Record high55° (1999)
Record low-10° (2022)
Wed, 1833° / 19°0.05
33 °
Forest Green, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high33°
Average low19°
Average precipitation0.05 in
Chance of precipitation37%
Record high48° (2008)
Record low-15° (2022)
Thu, 1932° / 18°0.07
32 °
Forest Green, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high32°
Average low18°
Average precipitation0.07 in
Chance of precipitation37%
Record high45° (1989)
Record low-9° (1985)
Fri, 2033° / 18°0.04
33 °
Forest Green, Friday, 20 November
Climate normal for this date — 60-year average.
Average high33°
Average low18°
Average precipitation0.04 in
Chance of precipitation27%
Record high49° (1987)
Record low-12° (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 Forest Green, 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 Forest Green, 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.