Monthly outlook for Harney, CO: average high 67.7°, average low 45.7°. That is 3° above the climate normal for October. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 10 October (83.2°), the coolest 17 October (29°).
67.7°/45.7°
Average high / low
+3°
Above normal
4 / 3
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
70°
63°
+3.8°
20 October – 29 October
63.9°
59.5°
+2.4°
30 October – 8 November
at normal
53.2°
—
October records over 66 years
84.6°2 October 2024All-time high
-1.5°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Longmont (9 mi).
Sun, 1182° / 62°0
82 °
Harney, Sunday, 11 October
Overcast. High 82°, low 62°.
Pressure29.68 inHg
Wind2.6 mph E
Humidity30%
Visibility6.2 mi
Dew point41°
Mon, 1282° / 55°0
82 °
Harney, Monday, 12 October
Clear. High 82°, low 55°.
Pressure29.65 inHg
Wind2.8 mph SW
Humidity20%
Visibility6.2 mi
Dew point33°
Tue, 1362° / 54°0
62 °
Harney, Tuesday, 13 October
Overcast. High 62°, low 54°.
Pressure29.94 inHg
Wind7 mph SE
Humidity68%
Visibility6.2 mi
Dew point47°
Wed, 1455° / 50°0.16
55 °
Harney, Wednesday, 14 October
Light rain. High 55°, low 50°.
Pressure30.12 inHg
Wind8.8 mph E
Humidity76%
Visibility—
Dew point46°
Thu, 1566° / 49°0.18
66 °
Harney, Thursday, 15 October
Rain. High 66°, low 49°.
Pressure30.21 inHg
Wind20.1 mph NE
Humidity51%
Visibility—
Dew point40°
Fri, 1653° / 39°0
53 °
Harney, Friday, 16 October
Overcast. High 53°, low 39°.
Pressure30.42 inHg
Wind9 mph SE
Humidity42%
Visibility—
Dew point24°
Sat, 1771° / 29°0
71 °
Harney, Saturday, 17 October
Clear. High 71°, low 29°.
Pressure30.30 inHg
Wind5.8 mph S
Humidity25%
Visibility—
Dew point17°
Sun, 1876° / 43°0
76 °
Harney, Sunday, 18 October
Clear. High 76°, low 43°.
Pressure29.91 inHg
Wind8.8 mph NE
Humidity18%
Visibility—
Dew point23°
Mon, 1968° / 44°0
68 °
Harney, Monday, 19 October
Overcast. High 68°, low 44°.
Pressure29.85 inHg
Wind13.4 mph N
Humidity31%
Visibility—
Dew point28°
Tue, 2072° / 51°0.06
72 °
Harney, Tuesday, 20 October
Light rain. High 72°, low 51°.
Pressure29.71 inHg
Wind13.1 mph S
Humidity24%
Visibility—
Dew point27°
Wed, 2157° / 42°0.17
57 °
Harney, Wednesday, 21 October
Light rain. High 57°, low 42°.
Pressure30.06 inHg
Wind9.8 mph W
Humidity22%
Visibility—
Dew point14°
Thu, 2271° / 37°0
71 °
Harney, Thursday, 22 October
Clear. High 71°, low 37°.
Pressure29.83 inHg
Wind12.2 mph W
Humidity15%
Visibility—
Dew point11°
Fri, 2359° / 43°0
59 °
Harney, Friday, 23 October
Mostly clear. High 59°, low 43°.
Pressure30.06 inHg
Wind14.6 mph N
Humidity11%
Visibility—
Dew point1°
Sat, 2460° / 33°0
60 °
Harney, Saturday, 24 October
Clear. High 60°, low 33°.
Pressure30.24 inHg
Wind8.7 mph SE
Humidity15%
Visibility—
Dew point5°
Sun, 2564° / 41°0
64 °
Harney, Sunday, 25 October
Partly cloudy. High 64°, low 41°.
Pressure30.15 inHg
Wind14.8 mph N
Humidity20%
Visibility—
Dew point20°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2658° / 35°0.06
58 °
Harney, Monday, 26 October
Climate normal for this date — 60-year average.
Average high58°
Average low35°
Average precipitation0.06 in
Chance of precipitation17%
Record high75° (2014)
Record low4° (2020)
Tue, 2757° / 34°0.03
57 °
Harney, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high57°
Average low34°
Average precipitation0.03 in
Chance of precipitation20%
Record high79° (2016)
Record low-1° (2020)
Wed, 2858° / 33°0.06
58 °
Harney, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high58°
Average low33°
Average precipitation0.06 in
Chance of precipitation20%
Record high77° (2016)
Record low9° (2019)
Thu, 2956° / 33°0.06
56 °
Harney, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high56°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high77° (1968)
Record low8° (1993)
Fri, 3053° / 31°0.05
53 °
Harney, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low31°
Average precipitation0.05 in
Chance of precipitation27%
Record high75° (1968)
Record low0° (1993)
Sat, 3153° / 31°0.04
53 °
Harney, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low31°
Average precipitation0.04 in
Chance of precipitation23%
Record high75° (2016)
Record low-1° (2019)
Sun, 0152° / 31°0.06
52 °
Harney, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low31°
Average precipitation0.06 in
Chance of precipitation27%
Record high71° (1988)
Record low13° (1991)
Mon, 0252° / 29°0.07
52 °
Harney, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low29°
Average precipitation0.07 in
Chance of precipitation27%
Record high78° (2025)
Record low4° (1991)
Tue, 0352° / 29°0.04
52 °
Harney, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low29°
Average precipitation0.04 in
Chance of precipitation22%
Record high71° (2015)
Record low-7° (1991)
Wed, 0454° / 30°0.03
54 °
Harney, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low30°
Average precipitation0.03 in
Chance of precipitation15%
Record high73° (2020)
Record low6° (2002)
Thu, 0553° / 30°0.04
53 °
Harney, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low30°
Average precipitation0.04 in
Chance of precipitation18%
Record high70° (2023)
Record low4° (1967)
Fri, 0654° / 30°0.03
54 °
Harney, Friday, 6 November
Climate normal for this date — 60-year average.
Average high54°
Average low30°
Average precipitation0.03 in
Chance of precipitation17%
Record high74° (2010)
Record low5° (1967)
Sat, 0754° / 30°0.03
54 °
Harney, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high54°
Average low30°
Average precipitation0.03 in
Chance of precipitation13%
Record high73° (2021)
Record low10° (1967)
Sun, 0853° / 30°0.04
53 °
Harney, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high53°
Average low30°
Average precipitation0.04 in
Chance of precipitation20%
Record high72° (2006)
Record low10° (1993)
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 Harney, 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 Harney, 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.