Monthly outlook for Greenough, MT: average high 57.8°, average low 35.4°. That is 3.5° above the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 5 days and 0.9 inches. The warmest day looks like 17 October (68.7°), the coolest 1 November (25.4°).
57.8°/35.4°
Average high / low
+3.5°
Above normal
2 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
62.3°
53.7°
+4.8°
27 October – 5 November
50.2°
46.9°
+1.8°
6 November – 15 November
at normal
42.1°
—
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).
Sun, 1858° / 29°0
58 °
Greenough, Sunday, 18 October
Clear. High 58°, low 29°.
Pressure30.12 inHg
Wind1 mph N
Humidity57%
Visibility6.2 mi
Dew point37°
Mon, 1962° / 30°0
62 °
Greenough, Monday, 19 October
Overcast. High 62°, low 30°.
Pressure29.94 inHg
Wind1.5 mph N
Humidity52%
Visibility6.2 mi
Dew point37°
Tue, 2062° / 39°0
62 °
Greenough, Tuesday, 20 October
Overcast. High 62°, low 39°.
Pressure30.06 inHg
Wind2.6 mph N
Humidity51%
Visibility6.2 mi
Dew point37°
Wed, 2162° / 35°0
62 °
Greenough, Wednesday, 21 October
Mostly clear. High 62°, low 35°.
Pressure30.06 inHg
Wind1.7 mph NW
Humidity57%
Visibility6.2 mi
Dew point39°
Thu, 2261° / 41°0
61 °
Greenough, Thursday, 22 October
Partly cloudy. High 61°, low 41°.
Pressure29.91 inHg
Wind2.8 mph SW
Humidity57%
Visibility—
Dew point38°
Fri, 2362° / 42°0.02
62 °
Greenough, Friday, 23 October
Light rain. High 62°, low 42°.
Pressure30.00 inHg
Wind4.9 mph S
Humidity62%
Visibility—
Dew point41°
Sat, 2460° / 36°0
60 °
Greenough, Saturday, 24 October
Clear. High 60°, low 36°.
Pressure30.12 inHg
Wind3 mph E
Humidity52%
Visibility—
Dew point33°
Sun, 2562° / 37°0
62 °
Greenough, Sunday, 25 October
Clear. High 62°, low 37°.
Pressure30.15 inHg
Wind2.2 mph E
Humidity46%
Visibility—
Dew point32°
Mon, 2665° / 38°0
65 °
Greenough, Monday, 26 October
Partly cloudy. High 65°, low 38°.
Pressure30.03 inHg
Wind2.6 mph NE
Humidity36%
Visibility—
Dew point27°
Tue, 2764° / 40°0
64 °
Greenough, Tuesday, 27 October
Overcast. High 64°, low 40°.
Pressure29.74 inHg
Wind3 mph N
Humidity32%
Visibility—
Dew point25°
Wed, 2862° / 44°0
62 °
Greenough, Wednesday, 28 October
Overcast. High 62°, low 44°.
Pressure29.68 inHg
Wind8.8 mph W
Humidity32%
Visibility—
Dew point28°
Thu, 2945° / 35°0.06
45 °
Greenough, Thursday, 29 October
Light rain. High 45°, low 35°.
Pressure29.71 inHg
Wind15.5 mph W
Humidity51%
Visibility—
Dew point27°
Fri, 3048° / 30°0
48 °
Greenough, Friday, 30 October
Partly cloudy. High 48°, low 30°.
Pressure29.77 inHg
Wind7.7 mph W
Humidity49%
Visibility—
Dew point23°
Sat, 3142° / 32°0.38
42 °
Greenough, Saturday, 31 October
Snow. High 42°, low 32°.
Pressure29.56 inHg
Wind9.1 mph W
Humidity93%
Visibility—
Dew point36°
Sun, 0140° / 25°0
40 °
Greenough, Sunday, 1 November
Light rain. High 40°, low 25°.
Pressure30.00 inHg
Wind14 mph W
Humidity64%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0246° / 30°0.07
46 °
Greenough, Monday, 2 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.07 in
Chance of precipitation35%
Record high62° (1981)
Record low1° (1991)
Tue, 0346° / 30°0.03
46 °
Greenough, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.03 in
Chance of precipitation23%
Record high62° (2020)
Record low-2° (1973)
Wed, 0446° / 31°0.07
46 °
Greenough, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.07 in
Chance of precipitation43%
Record high60° (2020)
Record low-6° (1973)
Thu, 0545° / 30°0.07
45 °
Greenough, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.07 in
Chance of precipitation37%
Record high65° (2020)
Record low0° (1961)
Fri, 0644° / 29°0.07
44 °
Greenough, Friday, 6 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.07 in
Chance of precipitation42%
Record high62° (2012)
Record low11° (2003)
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)
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.