Monthly outlook for Greenough, MT: average high 50.4°, average low 32.4°. That is 1.2° above the climate normal for October. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 5 days and 1.0 inches. The warmest day looks like 22 October (64.8°), the coolest 30 October (24.7°).
50.4°/32.4°
Average high / low
+1.2°
Above normal
4 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
47.9°
49.8°
-1.1°
1 November – 10 November
54.7°
44.3°
+5.7°
11 November – 20 November
at normal
40.2°
—
October records over 66 years
84.4°1 October 1992All-time high
-9.6°25 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Potomac (7 mi).
Fri, 2344° / 39°0.29
44 °
Greenough, Friday, 23 October
Rain. High 44°, low 39°.
Pressure29.85 inHg
Wind5 mph SW
Humidity97%
Visibility3.4 mi
Dew point46°
Sat, 2451° / 30°0
51 °
Greenough, Saturday, 24 October
Partly cloudy. High 51°, low 30°.
Pressure30.27 inHg
Wind0.4 mph W
Humidity63%
Visibility6.2 mi
Dew point31°
Sun, 2551° / 30°0
51 °
Greenough, Sunday, 25 October
Partly cloudy. High 51°, low 30°.
Pressure30.27 inHg
Wind3.7 mph NE
Humidity64%
Visibility6.2 mi
Dew point27°
Mon, 2651° / 28°0
51 °
Greenough, Monday, 26 October
Overcast. High 51°, low 28°.
Pressure30.15 inHg
Wind2.8 mph N
Humidity62%
Visibility—
Dew point29°
Tue, 2738° / 31°0.46
38 °
Greenough, Tuesday, 27 October
Snow. High 38°, low 31°.
Pressure30.12 inHg
Wind4.2 mph SE
Humidity95%
Visibility—
Dew point32°
Wed, 2837° / 32°0.14
37 °
Greenough, Wednesday, 28 October
Snow. High 37°, low 32°.
Pressure30.27 inHg
Wind4.5 mph E
Humidity81%
Visibility—
Dew point31°
Thu, 2942° / 29°0.02
42 °
Greenough, Thursday, 29 October
Light snow. High 42°, low 29°.
Pressure30.12 inHg
Wind4 mph W
Humidity78%
Visibility—
Dew point31°
Fri, 3050° / 25°0
50 °
Greenough, Friday, 30 October
Partly cloudy. High 50°, low 25°.
Pressure29.91 inHg
Wind9 mph W
Humidity60%
Visibility—
Dew point28°
Sat, 3151° / 29°0
51 °
Greenough, Saturday, 31 October
Overcast. High 51°, low 29°.
Pressure30.00 inHg
Wind4.1 mph SW
Humidity61%
Visibility—
Dew point29°
Sun, 0151° / 30°0
51 °
Greenough, Sunday, 1 November
Mostly clear. High 51°, low 30°.
Pressure30.12 inHg
Wind2.2 mph NE
Humidity54%
Visibility—
Dew point28°
Mon, 0253° / 30°0
53 °
Greenough, Monday, 2 November
Overcast. High 53°, low 30°.
Pressure30.09 inHg
Wind2.4 mph NE
Humidity52%
Visibility—
Dew point27°
Tue, 0356° / 32°0
56 °
Greenough, Tuesday, 3 November
Partly cloudy. High 56°, low 32°.
Pressure30.12 inHg
Wind2.8 mph NE
Humidity49%
Visibility—
Dew point28°
Wed, 0455° / 41°0.04
55 °
Greenough, Wednesday, 4 November
Light rain. High 55°, low 41°.
Pressure30.06 inHg
Wind4.3 mph W
Humidity82%
Visibility—
Dew point44°
Thu, 0556° / 38°0
56 °
Greenough, Thursday, 5 November
Overcast. High 56°, low 38°.
Pressure30.00 inHg
Wind3.2 mph NE
Humidity61%
Visibility—
Dew point37°
Fri, 0656° / 38°0
56 °
Greenough, Friday, 6 November
Overcast. High 56°, low 38°.
Pressure29.91 inHg
Wind2.5 mph E
Humidity58%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0743° / 29°0.09
43 °
Greenough, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.09 in
Chance of precipitation43%
Record high57° (2010)
Record low5° (1961)
Sun, 0843° / 28°0.06
43 °
Greenough, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.06 in
Chance of precipitation35%
Record high59° (2016)
Record low0° (1994)
Mon, 0943° / 28°0.06
43 °
Greenough, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.06 in
Chance of precipitation38%
Record high61° (2016)
Record low0° (1986)
Tue, 1041° / 26°0.04
41 °
Greenough, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.04 in
Chance of precipitation33%
Record high60° (2016)
Record low-19° (1986)
Wed, 1141° / 25°0.06
41 °
Greenough, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.06 in
Chance of precipitation32%
Record high59° (2016)
Record low-9° (2000)
Thu, 1242° / 26°0.06
42 °
Greenough, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.06 in
Chance of precipitation42%
Record high63° (1999)
Record low-11° (1986)
Fri, 1342° / 27°0.07
42 °
Greenough, Friday, 13 November
Climate normal for this date — 60-year average.
Average high42°
Average low27°
Average precipitation0.07 in
Chance of precipitation43%
Record high60° (1999)
Record low2° (2000)
Sat, 1441° / 26°0.06
41 °
Greenough, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.06 in
Chance of precipitation38%
Record high59° (2021)
Record low-1° (2000)
Sun, 1542° / 25°0.02
42 °
Greenough, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.02 in
Chance of precipitation13%
Record high63° (2021)
Record low4° (2014)
Mon, 1640° / 26°0.07
40 °
Greenough, Monday, 16 November
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.07 in
Chance of precipitation40%
Record high55° (2021)
Record low-4° (1961)
Tue, 1740° / 26°0.06
40 °
Greenough, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.06 in
Chance of precipitation43%
Record high55° (1976)
Record low-2° (1968)
Wed, 1839° / 24°0.07
39 °
Greenough, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high39°
Average low24°
Average precipitation0.07 in
Chance of precipitation47%
Record high56° (2008)
Record low2° (1994)
Thu, 1938° / 24°0.06
38 °
Greenough, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.06 in
Chance of precipitation28%
Record high51° (1989)
Record low-2° (1978)
Fri, 2038° / 24°0.06
38 °
Greenough, Friday, 20 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.06 in
Chance of precipitation38%
Record high52° (1989)
Record low-5° (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 Greenough, 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 Greenough, 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.