As of 00:09 MDT

Weather in Amherst, MT

42°Current weather

Amherst, Thursday, 15 October, 00:09

Partly cloudy. Feels like 38°. High 48°, low 35°.

Pressure30.33 inHg
Wind7.6 mph NW
Humidity73%
Visibility6.2 mi
Dew point35°

Monthly outlook for Amherst, MT: average high 58°, average low 38.7°. That is 2.6° above the climate normal for October. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 17 October (73.8°), the coolest 24 October (29.9°).

58°/38.7°
Average high / low
+2.6°
Above normal
1 / 4
Wet days / normal
0.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
15 October – 24 October59.8°55°+2.6°
25 October – 3 November54.9°49.2°+3.2°
4 November – 13 Novemberat normal44.4°—

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).

Fri, 1670° / 35°0Mostly clear
70 °Mostly clear

Amherst, Friday, 16 October

Mostly clear. High 70°, low 35°.

Pressure30.33 inHg
Wind9.9 mph S
Humidity33%
Visibility6.2 mi
Dew point31°
Sat, 1774° / 48°0Overcast
74 °Overcast

Amherst, Saturday, 17 October

Overcast. High 74°, low 48°.

Pressure29.91 inHg
Wind10.5 mph S
Humidity23%
Visibility6.2 mi
Dew point27°
Sun, 1864° / 40°0Partly cloudy
64 °Partly cloudy

Amherst, Sunday, 18 October

Partly cloudy. High 64°, low 40°.

Pressure30.12 inHg
Wind7.1 mph S
Humidity40%
Visibility6.2 mi
Dew point34°
Mon, 1973° / 42°0Clear
73 °Clear

Amherst, Monday, 19 October

Clear. High 73°, low 42°.

Pressure29.88 inHg
Wind8.4 mph S
Humidity35%
Visibility—
Dew point36°
Tue, 2060° / 43°0Partly cloudy
60 °Partly cloudy

Amherst, Tuesday, 20 October

Partly cloudy. High 60°, low 43°.

Pressure29.88 inHg
Wind7.5 mph S
Humidity42%
Visibility—
Dew point35°
Wed, 2163° / 38°0Mostly clear
63 °Mostly clear

Amherst, Wednesday, 21 October

Mostly clear. High 63°, low 38°.

Pressure29.74 inHg
Wind9.7 mph S
Humidity42%
Visibility—
Dew point31°
Thu, 2257° / 45°0Overcast
57 °Overcast

Amherst, Thursday, 22 October

Overcast. High 57°, low 45°.

Pressure29.68 inHg
Wind20.6 mph NW
Humidity36%
Visibility—
Dew point27°
Fri, 2343° / 36°0.02Snow
43 °Snow

Amherst, Friday, 23 October

Snow. High 43°, low 36°.

Pressure30.12 inHg
Wind18.8 mph NW
Humidity60%
Visibility—
Dew point27°
Sat, 2446° / 30°0Overcast
46 °Overcast

Amherst, Saturday, 24 October

Overcast. High 46°, low 30°.

Pressure30.47 inHg
Wind10.1 mph W
Humidity37%
Visibility—
Dew point16°
Sun, 2554° / 33°0Overcast
54 °Overcast

Amherst, Sunday, 25 October

Overcast. High 54°, low 33°.

Pressure30.21 inHg
Wind16.3 mph W
Humidity26%
Visibility—
Dew point16°
Mon, 2652° / 39°0Overcast
52 °Overcast

Amherst, Monday, 26 October

Overcast. High 52°, low 39°.

Pressure30.24 inHg
Wind12.1 mph NW
Humidity36%
Visibility—
Dew point22°
Tue, 2767° / 42°0Overcast
67 °Overcast

Amherst, Tuesday, 27 October

Overcast. High 67°, low 42°.

Pressure29.77 inHg
Wind25.7 mph W
Humidity36%
Visibility—
Dew point33°
Wed, 2853° / 36°0.22Light rain
53 °Light rain

Amherst, Wednesday, 28 October

Light rain. High 53°, low 36°.

Pressure30.03 inHg
Wind21.6 mph NW
Humidity97%
Visibility—
Dew point39°
Thu, 2960° / 35°0Overcast
60 °Overcast

Amherst, Thursday, 29 October

Overcast. High 60°, low 35°.

Pressure29.65 inHg
Wind13.2 mph S
Humidity37%
Visibility—
Dew point26°
Fri, 3045° / 42°0Overcast
45 °Overcast

Amherst, Friday, 30 October

Overcast. High 45°, low 42°.

Pressure29.65 inHg
Wind28.5 mph W
Humidity35%
Visibility—
Dew point17°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3148° / 30°0.05Climate normal
48 °Climate normal

Amherst, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high48°
Average low30°
Average precipitation0.05 in
Chance of precipitation22%
Record high69° (2008)
Record low0° (1984)
Sun, 0147° / 30°0.03Climate normal
47 °Climate normal

Amherst, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high47°
Average low30°
Average precipitation0.03 in
Chance of precipitation20%
Record high69° (2025)
Record low-5° (1991)
Mon, 0247° / 29°0.02Climate normal
47 °Climate normal

Amherst, Monday, 2 November

Climate normal for this date — 60-year average.

Average high47°
Average low29°
Average precipitation0.02 in
Chance of precipitation20%
Record high68° (2020)
Record low-16° (1991)
Tue, 0348° / 30°0.05Climate normal
48 °Climate normal

Amherst, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high48°
Average low30°
Average precipitation0.05 in
Chance of precipitation22%
Record high68° (1981)
Record low-9° (1991)
Wed, 0448° / 30°0.05Climate normal
48 °Climate normal

Amherst, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high48°
Average low30°
Average precipitation0.05 in
Chance of precipitation23%
Record high69° (1976)
Record low-4° (2003)
Thu, 0547° / 30°0.07Climate normal
47 °Climate normal

Amherst, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high47°
Average low30°
Average precipitation0.07 in
Chance of precipitation30%
Record high69° (2010)
Record low-15° (2003)
Fri, 0646° / 28°0.03Climate normal
46 °Climate normal

Amherst, Friday, 6 November

Climate normal for this date — 60-year average.

Average high46°
Average low28°
Average precipitation0.03 in
Chance of precipitation18%
Record high69° (2010)
Record low-3° (2003)
Sat, 0745° / 28°0.02Climate normal
45 °Climate normal

Amherst, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high45°
Average low28°
Average precipitation0.02 in
Chance of precipitation25%
Record high70° (1999)
Record low-4° (1973)
Sun, 0844° / 27°0.06Climate normal
44 °Climate normal

Amherst, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high44°
Average low27°
Average precipitation0.06 in
Chance of precipitation30%
Record high68° (1999)
Record low-2° (2022)
Mon, 0943° / 26°0.05Climate normal
43 °Climate normal

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°0.04Climate normal
42 °Climate normal

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°0.03Climate normal
42 °Climate normal

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°0.04Climate normal
44 °Climate normal

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°0.04Climate normal
43 °Climate normal

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)

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.