Monthly outlook for Amherst, MT: average high 49.7°, average low 32.6°. That is 0.7° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 8 November (60.1°), the coolest 24 October (22.2°).
49.7°/32.6°
Average high / low
+0.7°
Above normal
3 / 4
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
49.6°
49.7°
-0.1°
3 November – 12 November
49.9°
44.8°
+2.8°
13 November – 22 November
at normal
41.8°
—
October records over 66 years
87.4°1 October 2011All-time high
-16.4°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Lewistown (11 mi).
Sun, 2547° / 25°0
47 °
Amherst, Sunday, 25 October
Partly cloudy. High 47°, low 25°.
Pressure30.47 inHg
Wind1.5 mph N
Humidity75%
Visibility6.2 mi
Dew point24°
Mon, 2652° / 31°0
52 °
Amherst, Monday, 26 October
Clear. High 52°, low 31°.
Pressure30.12 inHg
Wind2.1 mph SE
Humidity63%
Visibility6.2 mi
Dew point33°
Tue, 2749° / 34°0.28
49 °
Amherst, Tuesday, 27 October
Snow. High 49°, low 34°.
Pressure29.85 inHg
Wind11.7 mph W
Humidity81%
Visibility6.2 mi
Dew point36°
Wed, 2853° / 35°0
53 °
Amherst, Wednesday, 28 October
Clear. High 53°, low 35°.
Pressure29.97 inHg
Wind13.3 mph W
Humidity49%
Visibility—
Dew point30°
Thu, 2946° / 32°0
46 °
Amherst, Thursday, 29 October
Overcast. High 46°, low 32°.
Pressure29.94 inHg
Wind8.7 mph E
Humidity60%
Visibility—
Dew point31°
Fri, 3052° / 35°0
52 °
Amherst, Friday, 30 October
Overcast. High 52°, low 35°.
Pressure30.03 inHg
Wind8.5 mph S
Humidity38%
Visibility—
Dew point20°
Sat, 3156° / 38°0
56 °
Amherst, Saturday, 31 October
Overcast. High 56°, low 38°.
Pressure29.94 inHg
Wind4.5 mph S
Humidity49%
Visibility—
Dew point31°
Sun, 0143° / 32°0.08
43 °
Amherst, Sunday, 1 November
Snow. High 43°, low 32°.
Pressure30.27 inHg
Wind15.5 mph NW
Humidity41%
Visibility—
Dew point19°
Mon, 0249° / 31°0
49 °
Amherst, Monday, 2 November
Clear. High 49°, low 31°.
Pressure30.47 inHg
Wind7.1 mph S
Humidity19%
Visibility—
Dew point3°
Tue, 0359° / 37°0
59 °
Amherst, Tuesday, 3 November
Clear. High 59°, low 37°.
Pressure30.27 inHg
Wind6.4 mph SE
Humidity16%
Visibility—
Dew point7°
Wed, 0439° / 32°0.01
39 °
Amherst, Wednesday, 4 November
Light snow. High 39°, low 32°.
Pressure30.45 inHg
Wind6.1 mph N
Humidity53%
Visibility—
Dew point21°
Thu, 0536° / 27°0.1
36 °
Amherst, Thursday, 5 November
Light snow. High 36°, low 27°.
Pressure30.39 inHg
Wind8 mph SE
Humidity74%
Visibility—
Dew point26°
Fri, 0654° / 28°0
54 °
Amherst, Friday, 6 November
Overcast. High 54°, low 28°.
Pressure29.85 inHg
Wind14.8 mph S
Humidity51%
Visibility—
Dew point28°
Sat, 0752° / 43°0
52 °
Amherst, Saturday, 7 November
Partly cloudy. High 52°, low 43°.
Pressure29.77 inHg
Wind33.6 mph W
Humidity39%
Visibility—
Dew point27°
Sun, 0860° / 38°0
60 °
Amherst, Sunday, 8 November
Overcast. High 60°, low 38°.
Pressure30.09 inHg
Wind14.5 mph NW
Humidity29%
Visibility—
Dew point20°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0943° / 26°0.05
43 °
Amherst, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.05 in
Chance of precipitation22%
Record high69° (2016)
Record low-4° (2022)
Tue, 1042° / 26°0.04
42 °
Amherst, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.04 in
Chance of precipitation22%
Record high64° (2025)
Record low-8° (1986)
Wed, 1142° / 24°0.03
42 °
Amherst, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high42°
Average low24°
Average precipitation0.03 in
Chance of precipitation22%
Record high67° (1990)
Record low-8° (2012)
Thu, 1244° / 25°0.04
44 °
Amherst, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high44°
Average low25°
Average precipitation0.04 in
Chance of precipitation23%
Record high70° (1990)
Record low-22° (1986)
Fri, 1343° / 26°0.04
43 °
Amherst, Friday, 13 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.04 in
Chance of precipitation22%
Record high65° (2025)
Record low-8° (1986)
Sat, 1444° / 26°0.04
44 °
Amherst, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.04 in
Chance of precipitation27%
Record high67° (1999)
Record low-2° (2014)
Sun, 1544° / 26°0.03
44 °
Amherst, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.03 in
Chance of precipitation18%
Record high65° (1999)
Record low-9° (2014)
Mon, 1644° / 27°0.03
44 °
Amherst, Monday, 16 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.03 in
Chance of precipitation22%
Record high64° (2001)
Record low-1° (2000)
Tue, 1742° / 26°0.04
42 °
Amherst, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.04 in
Chance of precipitation32%
Record high63° (1976)
Record low2° (2022)
Wed, 1842° / 25°0.04
42 °
Amherst, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.04 in
Chance of precipitation23%
Record high64° (2008)
Record low-4° (2022)
Thu, 1940° / 24°0.05
40 °
Amherst, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.05 in
Chance of precipitation20%
Record high59° (1989)
Record low-6° (1985)
Fri, 2041° / 24°0.02
41 °
Amherst, Friday, 20 November
Climate normal for this date — 60-year average.
Average high41°
Average low24°
Average precipitation0.02 in
Chance of precipitation25%
Record high58° (2005)
Record low-24° (1985)
Sat, 2140° / 22°0.02
40 °
Amherst, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high40°
Average low22°
Average precipitation0.02 in
Chance of precipitation15%
Record high61° (2002)
Record low-26° (1977)
Sun, 2238° / 22°0.03
38 °
Amherst, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high38°
Average low22°
Average precipitation0.03 in
Chance of precipitation28%
Record high61° (2021)
Record low-23° (1985)
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 Amherst, 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 Amherst, 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.