Monthly outlook for Amherst, CO: average high 71.7°, average low 48.2°. That is 3.8° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 9 October (87.8°), the coolest 17 October (33.2°).
71.7°/48.2°
Average high / low
+3.8°
Above normal
1 / 3
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
72.4°
65.6°
+3.8°
18 October – 27 October
70.5°
62.1°
+4.7°
28 October – 6 November
at normal
55.7°
—
October records over 66 years
90.3°6 October 2007All-time high
1.9°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Holyoke (10 mi).
Fri, 0988° / 49°0
88 °
Amherst, Friday, 9 October
Clear. High 88°, low 49°.
Pressure29.80 inHg
Wind7.1 mph S
Humidity28%
Visibility6.2 mi
Dew point45°
Sat, 1087° / 56°0
87 °
Amherst, Saturday, 10 October
Clear. High 87°, low 56°.
Pressure29.65 inHg
Wind5.4 mph S
Humidity21%
Visibility6.2 mi
Dew point41°
Sun, 1180° / 58°0
80 °
Amherst, Sunday, 11 October
Partly cloudy. High 80°, low 58°.
Pressure29.71 inHg
Wind11.8 mph N
Humidity31%
Visibility6.2 mi
Dew point45°
Mon, 1279° / 57°0
79 °
Amherst, Monday, 12 October
Clear. High 79°, low 57°.
Pressure29.77 inHg
Wind4.1 mph NE
Humidity52%
Visibility6.2 mi
Dew point54°
Tue, 1358° / 51°0
58 °
Amherst, Tuesday, 13 October
Overcast. High 58°, low 51°.
Pressure30.03 inHg
Wind11.3 mph NE
Humidity75%
Visibility—
Dew point45°
Wed, 1484° / 53°0
84 °
Amherst, Wednesday, 14 October
Overcast. High 84°, low 53°.
Pressure29.44 inHg
Wind23.6 mph S
Humidity42%
Visibility—
Dew point51°
Thu, 1563° / 46°0
63 °
Amherst, Thursday, 15 October
Clear. High 63°, low 46°.
Pressure29.85 inHg
Wind22.5 mph NW
Humidity31%
Visibility—
Dew point31°
Fri, 1651° / 36°0
51 °
Amherst, Friday, 16 October
Overcast. High 51°, low 36°.
Pressure30.59 inHg
Wind24.4 mph NW
Humidity45%
Visibility—
Dew point25°
Sat, 1750° / 33°0
50 °
Amherst, Saturday, 17 October
Overcast. High 50°, low 33°.
Pressure30.50 inHg
Wind17.4 mph SE
Humidity47%
Visibility—
Dew point28°
Sun, 1863° / 42°0.08
63 °
Amherst, Sunday, 18 October
Light rain. High 63°, low 42°.
Pressure30.06 inHg
Wind20.9 mph SE
Humidity58%
Visibility—
Dew point40°
Mon, 1974° / 47°0
74 °
Amherst, Monday, 19 October
Clear. High 74°, low 47°.
Pressure30.06 inHg
Wind11.2 mph W
Humidity20%
Visibility—
Dew point24°
Tue, 2073° / 53°0
73 °
Amherst, Tuesday, 20 October
Clear. High 73°, low 53°.
Pressure30.12 inHg
Wind7.1 mph NW
Humidity19%
Visibility—
Dew point23°
Wed, 2178° / 51°0
78 °
Amherst, Wednesday, 21 October
Clear. High 78°, low 51°.
Pressure29.97 inHg
Wind25.8 mph N
Humidity15%
Visibility—
Dew point20°
Thu, 2258° / 42°0
58 °
Amherst, Thursday, 22 October
Partly cloudy. High 58°, low 42°.
Pressure30.27 inHg
Wind19.6 mph NW
Humidity18%
Visibility—
Dew point10°
Fri, 2377° / 44°0
77 °
Amherst, Friday, 23 October
Overcast. High 77°, low 44°.
Pressure29.59 inHg
Wind17.3 mph S
Humidity21%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2461° / 39°0.04
61 °
Amherst, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high61°
Average low39°
Average precipitation0.04 in
Chance of precipitation18%
Record high81° (2014)
Record low22° (1995)
Sun, 2561° / 38°0.04
61 °
Amherst, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high61°
Average low38°
Average precipitation0.04 in
Chance of precipitation12%
Record high79° (1989)
Record low16° (2020)
Mon, 2661° / 39°0.02
61 °
Amherst, Monday, 26 October
Climate normal for this date — 60-year average.
Average high61°
Average low39°
Average precipitation0.02 in
Chance of precipitation8%
Record high82° (2021)
Record low8° (1997)
Tue, 2759° / 38°0.02
59 °
Amherst, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high59°
Average low38°
Average precipitation0.02 in
Chance of precipitation10%
Record high80° (1983)
Record low2° (2020)
Wed, 2859° / 37°0.05
59 °
Amherst, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high59°
Average low37°
Average precipitation0.05 in
Chance of precipitation22%
Record high85° (2016)
Record low18° (1991)
Thu, 2958° / 37°0.07
58 °
Amherst, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high58°
Average low37°
Average precipitation0.07 in
Chance of precipitation22%
Record high85° (2003)
Record low13° (1991)
Fri, 3055° / 36°0.06
55 °
Amherst, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low36°
Average precipitation0.06 in
Chance of precipitation22%
Record high79° (1968)
Record low13° (1991)
Sat, 3155° / 36°0.03
55 °
Amherst, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low36°
Average precipitation0.03 in
Chance of precipitation20%
Record high80° (2016)
Record low13° (1991)
Sun, 0155° / 35°0.06
55 °
Amherst, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low35°
Average precipitation0.06 in
Chance of precipitation20%
Record high75° (2015)
Record low13° (2002)
Mon, 0254° / 34°0.05
54 °
Amherst, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low34°
Average precipitation0.05 in
Chance of precipitation22%
Record high82° (2025)
Record low4° (1991)
Tue, 0354° / 34°0.03
54 °
Amherst, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low34°
Average precipitation0.03 in
Chance of precipitation17%
Record high82° (2015)
Record low1° (1991)
Wed, 0455° / 33°0.02
55 °
Amherst, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high55°
Average low33°
Average precipitation0.02 in
Chance of precipitation10%
Record high78° (2025)
Record low9° (2002)
Thu, 0556° / 35°0.02
56 °
Amherst, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low35°
Average precipitation0.02 in
Chance of precipitation12%
Record high75° (2023)
Record low18° (1967)
Fri, 0656° / 34°0.04
56 °
Amherst, Friday, 6 November
Climate normal for this date — 60-year average.
Average high56°
Average low34°
Average precipitation0.04 in
Chance of precipitation22%
Record high80° (1980)
Record low19° (1971)
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, CO 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, CO 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.