Monthly outlook for Shamrock, CO: average high 64.6°, average low 43.1°. That is 2.1° above the climate normal for October. Precipitation is expected on 1 day (about 0.7 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 22 October (77.8°), the coolest 1 November (26.8°).
64.6°/43.1°
Average high / low
+2.1°
Above normal
1 / 3
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
67.5°
63°
+2.5°
27 October – 5 November
59.8°
56.2°
+2°
6 November – 15 November
at normal
54.2°
—
October records over 66 years
86.4°3 October 2025All-time high
-1.3°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Cabin Creek (15 mi).
Sun, 1875° / 45°0
75 °
Shamrock, Sunday, 18 October
Overcast. High 75°, low 45°.
Pressure30.00 inHg
Wind6.1 mph N
Humidity23%
Visibility6.2 mi
Dew point24°
Mon, 1967° / 46°0
67 °
Shamrock, Monday, 19 October
Clear. High 67°, low 46°.
Pressure30.06 inHg
Wind2.8 mph NE
Humidity41%
Visibility6.2 mi
Dew point38°
Tue, 2071° / 46°0
71 °
Shamrock, Tuesday, 20 October
Clear. High 71°, low 46°.
Pressure30.00 inHg
Wind2.6 mph N
Humidity39%
Visibility6.2 mi
Dew point41°
Wed, 2175° / 47°0
75 °
Shamrock, Wednesday, 21 October
Clear. High 75°, low 47°.
Pressure30.12 inHg
Wind12 mph SE
Humidity39%
Visibility—
Dew point40°
Thu, 2278° / 56°0
78 °
Shamrock, Thursday, 22 October
Overcast. High 78°, low 56°.
Pressure29.97 inHg
Wind21.5 mph S
Humidity44%
Visibility—
Dew point47°
Fri, 2372° / 55°0
72 °
Shamrock, Friday, 23 October
Mostly clear. High 72°, low 55°.
Pressure29.59 inHg
Wind27.6 mph SW
Humidity13%
Visibility—
Dew point17°
Sat, 2455° / 43°0
55 °
Shamrock, Saturday, 24 October
Partly cloudy. High 55°, low 43°.
Pressure29.94 inHg
Wind19.8 mph NE
Humidity43%
Visibility—
Dew point31°
Sun, 2547° / 31°0
47 °
Shamrock, Sunday, 25 October
Overcast. High 47°, low 31°.
Pressure30.30 inHg
Wind13 mph N
Humidity48%
Visibility—
Dew point22°
Mon, 2659° / 35°0
59 °
Shamrock, Monday, 26 October
Clear. High 59°, low 35°.
Pressure30.06 inHg
Wind19.1 mph S
Humidity36%
Visibility—
Dew point25°
Tue, 2767° / 46°0
67 °
Shamrock, Tuesday, 27 October
Overcast. High 67°, low 46°.
Pressure29.74 inHg
Wind11.3 mph S
Humidity23%
Visibility—
Dew point19°
Wed, 2862° / 47°0
62 °
Shamrock, Wednesday, 28 October
Clear. High 62°, low 47°.
Pressure29.91 inHg
Wind34.6 mph W
Humidity11%
Visibility—
Dew point3°
Thu, 2969° / 43°0
69 °
Shamrock, Thursday, 29 October
Mostly clear. High 69°, low 43°.
Pressure29.91 inHg
Wind17.3 mph S
Humidity13%
Visibility—
Dew point11°
Fri, 3070° / 51°0.01
70 °
Shamrock, Friday, 30 October
Light rain. High 70°, low 51°.
Pressure29.41 inHg
Wind13.8 mph SW
Humidity28%
Visibility—
Dew point32°
Sat, 3143° / 32°0.68
43 °
Shamrock, Saturday, 31 October
Snow. High 43°, low 32°.
Pressure29.77 inHg
Wind24.1 mph N
Humidity78%
Visibility—
Dew point29°
Sun, 0146° / 27°0
46 °
Shamrock, Sunday, 1 November
Clear. High 46°, low 27°.
Pressure30.12 inHg
Wind12.9 mph SW
Humidity51%
Visibility—
Dew point23°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0253° / 32°0.04
53 °
Shamrock, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low32°
Average precipitation0.04 in
Chance of precipitation15%
Record high80° (2025)
Record low-6° (1991)
Tue, 0354° / 32°0.03
54 °
Shamrock, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low32°
Average precipitation0.03 in
Chance of precipitation18%
Record high74° (2015)
Record low-10° (1991)
Wed, 0455° / 32°0.01
55 °
Shamrock, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high55°
Average low32°
Average precipitation0.01 in
Chance of precipitation7%
Record high74° (1999)
Record low9° (1991)
Thu, 0556° / 33°0.02
56 °
Shamrock, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low33°
Average precipitation0.02 in
Chance of precipitation18%
Record high75° (2023)
Record low6° (1967)
Fri, 0657° / 34°0.02
57 °
Shamrock, Friday, 6 November
Climate normal for this date — 60-year average.
Average high57°
Average low34°
Average precipitation0.02 in
Chance of precipitation7%
Record high80° (2020)
Record low17° (2002)
Sat, 0758° / 35°0.02
58 °
Shamrock, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high58°
Average low35°
Average precipitation0.02 in
Chance of precipitation13%
Record high77° (1999)
Record low15° (1990)
Sun, 0857° / 34°0.05
57 °
Shamrock, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high57°
Average low34°
Average precipitation0.05 in
Chance of precipitation20%
Record high75° (2006)
Record low16° (2018)
Mon, 0954° / 32°0.05
54 °
Shamrock, Monday, 9 November
Climate normal for this date — 60-year average.
Average high54°
Average low32°
Average precipitation0.05 in
Chance of precipitation18%
Record high72° (2014)
Record low11° (1960)
Tue, 1054° / 30°0.03
54 °
Shamrock, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high54°
Average low30°
Average precipitation0.03 in
Chance of precipitation17%
Record high71° (1999)
Record low10° (1986)
Wed, 1152° / 29°0.03
52 °
Shamrock, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high52°
Average low29°
Average precipitation0.03 in
Chance of precipitation18%
Record high72° (2005)
Record low14° (2014)
Thu, 1253° / 30°0.04
53 °
Shamrock, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high53°
Average low30°
Average precipitation0.04 in
Chance of precipitation23%
Record high75° (1989)
Record low4° (2000)
Fri, 1353° / 31°0.03
53 °
Shamrock, Friday, 13 November
Climate normal for this date — 60-year average.
Average high53°
Average low31°
Average precipitation0.03 in
Chance of precipitation13%
Record high72° (2025)
Record low3° (2000)
Sat, 1452° / 30°0.04
52 °
Shamrock, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high52°
Average low30°
Average precipitation0.04 in
Chance of precipitation22%
Record high76° (2025)
Record low5° (2000)
Sun, 1551° / 28°0.04
51 °
Shamrock, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high51°
Average low28°
Average precipitation0.04 in
Chance of precipitation17%
Record high74° (2016)
Record low-5° (1997)
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 Shamrock, 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 Shamrock, 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.