As of 22:03 MDT

Weather in Harney, SD

49°Current weather

Harney, Sunday, 18 October, 22:03

Clear. Feels like 49°. High 63°, low 48°.

Pressure30.24 inHg
Wind2.2 mph NE
Humidity39%
Visibility6.2 mi
Dew point27°

Monthly outlook for Harney, SD: average high 59.6°, average low 38.8°. That is 1.8° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 22 October (74.6°), the coolest 31 October (26.2°).

59.6°/38.8°
Average high / low
+1.8°
Above normal
1 / 3
Wet days / normal
0.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
18 October – 27 October62.3°58.5°+2.1°
28 October – 6 November55.1°52.5°+1.5°
7 November – 16 Novemberat normal48.1°—

October records over 66 years

90.3°3 October 2025All-time high
-4.2°26 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Hermosa (10 mi).

Mon, 1960° / 37°0Clear
60 °Clear

Harney, Monday, 19 October

Clear. High 60°, low 37°.

Pressure30.15 inHg
Wind7.1 mph SE
Humidity47%
Visibility6.2 mi
Dew point35°
Tue, 2071° / 39°0Clear
71 °Clear

Harney, Tuesday, 20 October

Clear. High 71°, low 39°.

Pressure29.97 inHg
Wind4.2 mph E
Humidity35%
Visibility6.2 mi
Dew point41°
Wed, 2163° / 44°0Clear
63 °Clear

Harney, Wednesday, 21 October

Clear. High 63°, low 44°.

Pressure30.21 inHg
Wind5.3 mph SE
Humidity58%
Visibility6.2 mi
Dew point46°
Thu, 2275° / 52°0Partly cloudy
75 °Partly cloudy

Harney, Thursday, 22 October

Partly cloudy. High 75°, low 52°.

Pressure29.94 inHg
Wind4.4 mph SE
Humidity46%
Visibility6.2 mi
Dew point51°
Fri, 2374° / 55°0Overcast
74 °Overcast

Harney, Friday, 23 October

Overcast. High 74°, low 55°.

Pressure29.62 inHg
Wind12 mph SW
Humidity47%
Visibility—
Dew point48°
Sat, 2457° / 36°0.08Light rain
57 °Light rain

Harney, Saturday, 24 October

Light rain. High 57°, low 36°.

Pressure30.03 inHg
Wind11.9 mph W
Humidity57%
Visibility—
Dew point36°
Sun, 2552° / 31°0Mostly clear
52 °Mostly clear

Harney, Sunday, 25 October

Mostly clear. High 52°, low 31°.

Pressure30.15 inHg
Wind9.9 mph SE
Humidity32%
Visibility—
Dew point17°
Mon, 2651° / 34°0Mostly clear
51 °Mostly clear

Harney, Monday, 26 October

Mostly clear. High 51°, low 34°.

Pressure30.06 inHg
Wind12.4 mph E
Humidity36%
Visibility—
Dew point23°
Tue, 2759° / 33°0Clear
59 °Clear

Harney, Tuesday, 27 October

Clear. High 59°, low 33°.

Pressure29.91 inHg
Wind17 mph S
Humidity35%
Visibility—
Dew point24°
Wed, 2870° / 42°0Partly cloudy
70 °Partly cloudy

Harney, Wednesday, 28 October

Partly cloudy. High 70°, low 42°.

Pressure29.62 inHg
Wind14.4 mph SW
Humidity19%
Visibility—
Dew point23°
Thu, 2964° / 39°0.02Light rain
64 °Light rain

Harney, Thursday, 29 October

Light rain. High 64°, low 39°.

Pressure29.23 inHg
Wind21.3 mph W
Humidity31%
Visibility—
Dew point31°
Fri, 3040° / 31°0Overcast
40 °Overcast

Harney, Friday, 30 October

Overcast. High 40°, low 31°.

Pressure29.71 inHg
Wind30.9 mph W
Humidity41%
Visibility—
Dew point15°
Sat, 3147° / 26°0Overcast
47 °Overcast

Harney, Saturday, 31 October

Overcast. High 47°, low 26°.

Pressure29.94 inHg
Wind12.5 mph W
Humidity22%
Visibility—
Dew point7°
Sun, 0150° / 34°0Overcast
50 °Overcast

Harney, Sunday, 1 November

Overcast. High 50°, low 34°.

Pressure29.85 inHg
Wind17.4 mph NW
Humidity37%
Visibility—
Dew point21°
Mon, 0260° / 40°0Overcast
60 °Overcast

Harney, Monday, 2 November

Overcast. High 60°, low 40°.

Pressure29.56 inHg
Wind27 mph SW
Humidity23%
Visibility—
Dew point18°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0351° / 33°0.04Climate normal
51 °Climate normal

Harney, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high51°
Average low33°
Average precipitation0.04 in
Chance of precipitation20%
Record high71° (2020)
Record low2° (1991)
Wed, 0453° / 32°0.01Climate normal
53 °Climate normal

Harney, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high53°
Average low32°
Average precipitation0.01 in
Chance of precipitation10%
Record high76° (1978)
Record low7° (1995)
Thu, 0552° / 33°0.03Climate normal
52 °Climate normal

Harney, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high52°
Average low33°
Average precipitation0.03 in
Chance of precipitation13%
Record high76° (2020)
Record low1° (2003)
Fri, 0651° / 32°0.04Climate normal
51 °Climate normal

Harney, Friday, 6 November

Climate normal for this date — 60-year average.

Average high51°
Average low32°
Average precipitation0.04 in
Chance of precipitation13%
Record high75° (2020)
Record low-3° (2003)
Sat, 0752° / 32°0.03Climate normal
52 °Climate normal

Harney, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high52°
Average low32°
Average precipitation0.03 in
Chance of precipitation13%
Record high75° (1999)
Record low3° (1991)
Sun, 0850° / 31°0.06Climate normal
50 °Climate normal

Harney, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high50°
Average low31°
Average precipitation0.06 in
Chance of precipitation20%
Record high77° (1999)
Record low3° (2003)
Mon, 0946° / 29°0.06Climate normal
46 °Climate normal

Harney, Monday, 9 November

Climate normal for this date — 60-year average.

Average high46°
Average low29°
Average precipitation0.06 in
Chance of precipitation25%
Record high74° (2016)
Record low-3° (1966)
Tue, 1047° / 27°0.04Climate normal
47 °Climate normal

Harney, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high47°
Average low27°
Average precipitation0.04 in
Chance of precipitation17%
Record high69° (2005)
Record low-7° (1986)
Wed, 1145° / 27°0.02Climate normal
45 °Climate normal

Harney, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high45°
Average low27°
Average precipitation0.02 in
Chance of precipitation18%
Record high72° (2005)
Record low-7° (1986)
Thu, 1248° / 28°0.03Climate normal
48 °Climate normal

Harney, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high48°
Average low28°
Average precipitation0.03 in
Chance of precipitation15%
Record high73° (1999)
Record low-8° (1986)
Fri, 1348° / 29°0.04Climate normal
48 °Climate normal

Harney, Friday, 13 November

Climate normal for this date — 60-year average.

Average high48°
Average low29°
Average precipitation0.04 in
Chance of precipitation22%
Record high73° (1999)
Record low-16° (1986)
Sat, 1448° / 30°0.02Climate normal
48 °Climate normal

Harney, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high48°
Average low30°
Average precipitation0.02 in
Chance of precipitation13%
Record high74° (2025)
Record low1° (1978)
Sun, 1548° / 29°0.02Climate normal
48 °Climate normal

Harney, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high48°
Average low29°
Average precipitation0.02 in
Chance of precipitation13%
Record high71° (2021)
Record low1° (2014)
Mon, 1649° / 29°0.02Climate normal
49 °Climate normal

Harney, Monday, 16 November

Climate normal for this date — 60-year average.

Average high49°
Average low29°
Average precipitation0.02 in
Chance of precipitation8%
Record high70° (2001)
Record low-8° (2014)

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, SD 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, SD 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.