Monthly outlook for Forest Green, MT: average high 44.7°, average low 26.5°. That is 0.8° above the climate normal for October. Precipitation is expected on 4 days (about 1.8 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 22 October (61.1°), the coolest 28 October (12.2°).
44.7°/26.5°
Average high / low
+0.8°
Above normal
4 / 4
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
46.3°
45.4°
+0.5°
29 October – 7 November
42°
39.1°
+1.6°
8 November – 17 November
at normal
35.4°
—
October records over 66 years
76.6°1 October 2011All-time high
-18.2°10 October 2009All-time low
Tue, 2056° / 39°0
56 °
Forest Green, Tuesday, 20 October
Overcast. High 56°, low 39°.
Pressure30.06 inHg
Wind0.6 mph SW
Humidity41%
Visibility6.2 mi
Dew point29°
Wed, 2159° / 38°0
59 °
Forest Green, Wednesday, 21 October
Clear. High 59°, low 38°.
Pressure30.06 inHg
Wind6.6 mph S
Humidity53%
Visibility6.2 mi
Dew point37°
Thu, 2261° / 44°0
61 °
Forest Green, Thursday, 22 October
Mostly clear. High 61°, low 44°.
Pressure29.91 inHg
Wind8.4 mph S
Humidity47%
Visibility6.2 mi
Dew point38°
Fri, 2348° / 35°1.19
48 °
Forest Green, Friday, 23 October
Snow. High 48°, low 35°.
Pressure29.65 inHg
Wind10.7 mph NW
Humidity99%
Visibility—
Dew point47°
Sat, 2439° / 24°0.36
39 °
Forest Green, Saturday, 24 October
Snow. High 39°, low 24°.
Pressure30.18 inHg
Wind12 mph NW
Humidity87%
Visibility—
Dew point31°
Sun, 2543° / 22°0.04
43 °
Forest Green, Sunday, 25 October
Light snow. High 43°, low 22°.
Pressure30.06 inHg
Wind6.2 mph SW
Humidity60%
Visibility—
Dew point24°
Mon, 2632° / 17°0.15
32 °
Forest Green, Monday, 26 October
Snow. High 32°, low 17°.
Pressure30.24 inHg
Wind6.3 mph NW
Humidity83%
Visibility—
Dew point25°
Tue, 2729° / 13°0.02
29 °
Forest Green, Tuesday, 27 October
Light snow. High 29°, low 13°.
Pressure30.56 inHg
Wind4.3 mph SE
Humidity72%
Visibility—
Dew point16°
Wed, 2839° / 12°0
39 °
Forest Green, Wednesday, 28 October
Clear. High 39°, low 12°.
Pressure30.15 inHg
Wind4.6 mph SW
Humidity52%
Visibility—
Dew point16°
Thu, 2946° / 23°0
46 °
Forest Green, Thursday, 29 October
Overcast. High 46°, low 23°.
Pressure29.85 inHg
Wind4.4 mph E
Humidity54%
Visibility—
Dew point24°
Fri, 3048° / 31°0
48 °
Forest Green, Friday, 30 October
Overcast. High 48°, low 31°.
Pressure29.74 inHg
Wind5.9 mph SW
Humidity62%
Visibility—
Dew point31°
Sat, 3143° / 29°0
43 °
Forest Green, Saturday, 31 October
Clear. High 43°, low 29°.
Pressure29.80 inHg
Wind13.6 mph W
Humidity50%
Visibility—
Dew point22°
Sun, 0143° / 27°0.02
43 °
Forest Green, Sunday, 1 November
Light snow. High 43°, low 27°.
Pressure29.77 inHg
Wind6.4 mph SW
Humidity49%
Visibility—
Dew point22°
Mon, 0233° / 20°0
33 °
Forest Green, Monday, 2 November
Overcast. High 33°, low 20°.
Pressure30.21 inHg
Wind5.3 mph SE
Humidity54%
Visibility—
Dew point14°
Tue, 0340° / 21°0
40 °
Forest Green, Tuesday, 3 November
Overcast. High 40°, low 21°.
Pressure30.12 inHg
Wind5.6 mph S
Humidity52%
Visibility—
Dew point18°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0440° / 25°0.07
40 °
Forest Green, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high40°
Average low25°
Average precipitation0.07 in
Chance of precipitation35%
Record high55° (2016)
Record low-3° (2003)
Thu, 0539° / 25°0.07
39 °
Forest Green, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high39°
Average low25°
Average precipitation0.07 in
Chance of precipitation35%
Record high56° (1975)
Record low-7° (2003)
Fri, 0638° / 23°0.04
38 °
Forest Green, Friday, 6 November
Climate normal for this date — 60-year average.
Average high38°
Average low23°
Average precipitation0.04 in
Chance of precipitation28%
Record high57° (2010)
Record low-3° (2003)
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)
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.