As of 10:56 MDT

Weather in Harney, SD

57°Current weather

Harney, Monday, 12 October, 10:56

Overcast. Feels like 57°. High 57°, low 38°.

Pressure29.83 inHg
Wind2.6 mph N
Humidity89%
Visibility0.5 mi
Dew point54°

Monthly outlook for Harney, SD: average high 58.7°, average low 41.9°. That is 0.2° below the climate normal for October. Precipitation is expected on 5 days (about 1.0 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 17 October (71.2°), the coolest 16 October (26.3°).

58.7°/41.9°
Average high / low
−0.2°
Below normal
5 / 3
Wet days / normal
1.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
12 October – 21 October60.7°60.1°+0.4°
22 October – 31 October55.3°55.8°-0.3°
1 November – 10 Novemberat normal50.5°—

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).

Tue, 1347° / 34°0.01Light rain
47 °Light rain

Harney, Tuesday, 13 October

Light rain. High 47°, low 34°.

Pressure30.03 inHg
Wind3.3 mph SE
Humidity73%
Visibility6.2 mi
Dew point39°
Wed, 1453° / 39°0.06Rain
53 °Rain

Harney, Wednesday, 14 October

Rain. High 53°, low 39°.

Pressure30.18 inHg
Wind5.4 mph SE
Humidity65%
Visibility6.2 mi
Dew point40°
Thu, 1552° / 39°0Overcast
52 °Overcast

Harney, Thursday, 15 October

Overcast. High 52°, low 39°.

Pressure30.45 inHg
Wind16 mph N
Humidity42%
Visibility6.2 mi
Dew point17°
Fri, 1660° / 26°0Clear
60 °Clear

Harney, Friday, 16 October

Clear. High 60°, low 26°.

Pressure30.53 inHg
Wind14.5 mph SW
Humidity33%
Visibility—
Dew point24°
Sat, 1771° / 49°0Clear
71 °Clear

Harney, Saturday, 17 October

Clear. High 71°, low 49°.

Pressure29.91 inHg
Wind15.8 mph SW
Humidity23%
Visibility—
Dew point28°
Sun, 1868° / 50°0Clear
68 °Clear

Harney, Sunday, 18 October

Clear. High 68°, low 50°.

Pressure29.80 inHg
Wind10 mph NE
Humidity21%
Visibility—
Dew point24°
Mon, 1961° / 46°0Clear
61 °Clear

Harney, Monday, 19 October

Clear. High 61°, low 46°.

Pressure30.09 inHg
Wind13.3 mph S
Humidity37%
Visibility—
Dew point31°
Tue, 2068° / 46°0Clear
68 °Clear

Harney, Tuesday, 20 October

Clear. High 68°, low 46°.

Pressure29.80 inHg
Wind14 mph S
Humidity37%
Visibility—
Dew point35°
Wed, 2171° / 51°0.12Light rain
71 °Light rain

Harney, Wednesday, 21 October

Light rain. High 71°, low 51°.

Pressure29.65 inHg
Wind9.5 mph SE
Humidity31%
Visibility—
Dew point37°
Thu, 2255° / 46°0.02Light rain
55 °Light rain

Harney, Thursday, 22 October

Light rain. High 55°, low 46°.

Pressure30.03 inHg
Wind11.1 mph N
Humidity63%
Visibility—
Dew point42°
Fri, 2351° / 44°0.46Rain
51 °Rain

Harney, Friday, 23 October

Rain. High 51°, low 44°.

Pressure29.85 inHg
Wind25.3 mph W
Humidity98%
Visibility—
Dew point47°
Sat, 2445° / 39°0.28Rain
45 °Rain

Harney, Saturday, 24 October

Rain. High 45°, low 39°.

Pressure29.68 inHg
Wind35 mph NW
Humidity77%
Visibility—
Dew point35°
Sun, 2554° / 37°0Clear
54 °Clear

Harney, Sunday, 25 October

Clear. High 54°, low 37°.

Pressure30.47 inHg
Wind20.8 mph NW
Humidity35%
Visibility—
Dew point23°
Mon, 2666° / 40°0Clear
66 °Clear

Harney, Monday, 26 October

Clear. High 66°, low 40°.

Pressure30.27 inHg
Wind7.2 mph W
Humidity20%
Visibility—
Dew point19°
Tue, 2762° / 46°0Clear
62 °Clear

Harney, Tuesday, 27 October

Clear. High 62°, low 46°.

Pressure30.27 inHg
Wind7.2 mph E
Humidity33%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)

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.