As of 08:15 MDT

Weather in Harney, SD

46°Current weather

Harney, Sunday, 11 October, 08:15

Overcast. Feels like 44°. High 57°, low 45°.

Pressure29.85 inHg
Wind3.9 mph NE
Humidity79%
Visibility6.2 mi
Dew point40°

Monthly outlook for Harney, SD: average high 62.1°, average low 42.2°. That is 1.5° above the climate normal for October. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 19 October (72.6°), the coolest 16 October (28.1°).

62.1°/42.2°
Average high / low
+1.5°
Above normal
3 / 3
Wet days / normal
0.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
11 October – 20 October61.8°60.3°+0.8°
21 October – 30 October62.7°56.6°+3.4°
31 October – 9 Novemberat normal51°—

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, 1261° / 38°0Light rain
61 °Light rain

Harney, Monday, 12 October

Light rain. High 61°, low 38°.

Pressure29.77 inHg
Wind2.9 mph N
Humidity55%
Visibility6.2 mi
Dew point45°
Tue, 1349° / 37°0.47Heavy rain
49 °Heavy rain

Harney, Tuesday, 13 October

Heavy rain. High 49°, low 37°.

Pressure30.03 inHg
Wind3.6 mph SE
Humidity80%
Visibility6.2 mi
Dew point39°
Wed, 1448° / 40°0.26Light rain
48 °Light rain

Harney, Wednesday, 14 October

Light rain. High 48°, low 40°.

Pressure30.24 inHg
Wind3.4 mph E
Humidity87%
Visibility6.2 mi
Dew point41°
Thu, 1555° / 42°0.09Light rain
55 °Light rain

Harney, Thursday, 15 October

Light rain. High 55°, low 42°.

Pressure30.36 inHg
Wind15.8 mph N
Humidity53%
Visibility—
Dew point32°
Fri, 1664° / 28°0Clear
64 °Clear

Harney, Friday, 16 October

Clear. High 64°, low 28°.

Pressure30.50 inHg
Wind11.7 mph SW
Humidity31%
Visibility—
Dew point24°
Sat, 1770° / 42°0Clear
70 °Clear

Harney, Saturday, 17 October

Clear. High 70°, low 42°.

Pressure29.97 inHg
Wind13.5 mph SW
Humidity22%
Visibility—
Dew point26°
Sun, 1870° / 50°0Overcast
70 °Overcast

Harney, Sunday, 18 October

Overcast. High 70°, low 50°.

Pressure29.97 inHg
Wind10.8 mph SE
Humidity23%
Visibility—
Dew point28°
Mon, 1973° / 47°0Partly cloudy
73 °Partly cloudy

Harney, Monday, 19 October

Partly cloudy. High 73°, low 47°.

Pressure29.88 inHg
Wind13.8 mph SW
Humidity19%
Visibility—
Dew point25°
Tue, 2071° / 50°0Clear
71 °Clear

Harney, Tuesday, 20 October

Clear. High 71°, low 50°.

Pressure29.68 inHg
Wind15.9 mph NW
Humidity16%
Visibility—
Dew point20°
Wed, 2163° / 43°0Clear
63 °Clear

Harney, Wednesday, 21 October

Clear. High 63°, low 43°.

Pressure29.97 inHg
Wind11.4 mph S
Humidity39%
Visibility—
Dew point32°
Thu, 2263° / 45°0Overcast
63 °Overcast

Harney, Thursday, 22 October

Overcast. High 63°, low 45°.

Pressure30.00 inHg
Wind8.4 mph NE
Humidity26%
Visibility—
Dew point26°
Fri, 2365° / 43°0Clear
65 °Clear

Harney, Friday, 23 October

Clear. High 65°, low 43°.

Pressure30.09 inHg
Wind13 mph S
Humidity33%
Visibility—
Dew point30°
Sat, 2468° / 48°0Clear
68 °Clear

Harney, Saturday, 24 October

Clear. High 68°, low 48°.

Pressure30.00 inHg
Wind10.5 mph SW
Humidity16%
Visibility—
Dew point19°
Sun, 2556° / 41°0Partly cloudy
56 °Partly cloudy

Harney, Sunday, 25 October

Partly cloudy. High 56°, low 41°.

Pressure30.27 inHg
Wind13.6 mph N
Humidity24%
Visibility—
Dew point16°
Mon, 2661° / 35°0Overcast
61 °Overcast

Harney, Monday, 26 October

Overcast. High 61°, low 35°.

Pressure29.97 inHg
Wind7.4 mph SW
Humidity21%
Visibility—
Dew point15°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2756° / 35°0.03Climate normal
56 °Climate normal

Harney, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high56°
Average low35°
Average precipitation0.03 in
Chance of precipitation23%
Record high78° (2016)
Record low8° (2020)
Wed, 2856° / 35°0.07Climate normal
56 °Climate normal

Harney, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high56°
Average low35°
Average precipitation0.07 in
Chance of precipitation22%
Record high78° (2016)
Record low13° (1991)
Thu, 2954° / 35°0.07Climate normal
54 °Climate normal

Harney, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high54°
Average low35°
Average precipitation0.07 in
Chance of precipitation35%
Record high78° (1968)
Record low8° (1991)
Fri, 3052° / 34°0.04Climate normal
52 °Climate normal

Harney, Friday, 30 October

Climate normal for this date — 60-year average.

Average high52°
Average low34°
Average precipitation0.04 in
Chance of precipitation22%
Record high77° (1968)
Record low3° (1991)
Sat, 3152° / 34°0.03Climate normal
52 °Climate normal

Harney, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high52°
Average low34°
Average precipitation0.03 in
Chance of precipitation15%
Record high74° (1990)
Record low3° (1991)
Sun, 0151° / 33°0.05Climate normal
51 °Climate normal

Harney, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high51°
Average low33°
Average precipitation0.05 in
Chance of precipitation18%
Record high72° (1965)
Record low3° (2002)
Mon, 0251° / 32°0.04Climate normal
51 °Climate normal

Harney, Monday, 2 November

Climate normal for this date — 60-year average.

Average high51°
Average low32°
Average precipitation0.04 in
Chance of precipitation20%
Record high75° (2008)
Record low-2° (1991)
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)

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.