Monthly outlook for Harney, CO: average high 70.8°, average low 44.4°. That is 4.7° above the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 11 October (83.7°), the coolest 17 October (26.5°).
70.8°/44.4°
Average high / low
+4.7°
Above normal
2 / 3
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
69.9°
63°
+3.8°
20 October – 29 October
72.2°
59.5°
+7.1°
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, 1184° / 61°0
84 °
Harney, Sunday, 11 October
Overcast. High 84°, low 61°.
Pressure29.65 inHg
Wind1.1 mph N
Humidity28%
Visibility6.2 mi
Dew point40°
Mon, 1282° / 55°0
82 °
Harney, Monday, 12 October
Clear. High 82°, low 55°.
Pressure29.68 inHg
Wind5 mph S
Humidity19%
Visibility6.2 mi
Dew point33°
Tue, 1361° / 55°0.01
61 °
Harney, Tuesday, 13 October
Light rain. High 61°, low 55°.
Pressure29.91 inHg
Wind7.3 mph E
Humidity68%
Visibility6.2 mi
Dew point47°
Wed, 1455° / 50°0.2
55 °
Harney, Wednesday, 14 October
Light rain. High 55°, low 50°.
Pressure30.15 inHg
Wind7.8 mph E
Humidity80%
Visibility—
Dew point46°
Thu, 1560° / 48°0.07
60 °
Harney, Thursday, 15 October
Light rain. High 60°, low 48°.
Pressure30.24 inHg
Wind10.2 mph S
Humidity69%
Visibility—
Dew point45°
Fri, 1657° / 34°0
57 °
Harney, Friday, 16 October
Overcast. High 57°, low 34°.
Pressure30.36 inHg
Wind23.5 mph N
Humidity33%
Visibility—
Dew point21°
Sat, 1760° / 27°0
60 °
Harney, Saturday, 17 October
Clear. High 60°, low 27°.
Pressure30.47 inHg
Wind8.7 mph E
Humidity22%
Visibility—
Dew point10°
Sun, 1881° / 31°0
81 °
Harney, Sunday, 18 October
Mostly clear. High 81°, low 31°.
Pressure29.97 inHg
Wind9.4 mph NW
Humidity7%
Visibility—
Dew point0°
Mon, 1976° / 44°0
76 °
Harney, Monday, 19 October
Overcast. High 76°, low 44°.
Pressure29.94 inHg
Wind6 mph S
Humidity11%
Visibility—
Dew point12°
Tue, 2077° / 45°0
77 °
Harney, Tuesday, 20 October
Clear. High 77°, low 45°.
Pressure29.88 inHg
Wind8.3 mph E
Humidity12%
Visibility—
Dew point14°
Wed, 2179° / 45°0.02
79 °
Harney, Wednesday, 21 October
Light rain. High 79°, low 45°.
Pressure29.71 inHg
Wind12.3 mph S
Humidity14%
Visibility—
Dew point19°
Thu, 2264° / 42°0.03
64 °
Harney, Thursday, 22 October
Light rain. High 64°, low 42°.
Pressure30.12 inHg
Wind13.8 mph W
Humidity20%
Visibility—
Dew point15°
Fri, 2374° / 41°0
74 °
Harney, Friday, 23 October
Partly cloudy. High 74°, low 41°.
Pressure29.80 inHg
Wind11.9 mph SW
Humidity12%
Visibility—
Dew point12°
Sat, 2463° / 43°0
63 °
Harney, Saturday, 24 October
Clear. High 63°, low 43°.
Pressure29.97 inHg
Wind12.9 mph SE
Humidity36%
Visibility—
Dew point29°
Sun, 2575° / 36°0
75 °
Harney, Sunday, 25 October
Overcast. High 75°, low 36°.
Pressure29.50 inHg
Wind21.5 mph W
Humidity15%
Visibility—
Dew point16°
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.