As of 04:49 MDT

Weather in Harney, SD

42°Current weather

Harney, Wednesday, 14 October, 04:49

Overcast. Feels like 42°. High 47°, low 41°.

Pressure30.18 inHg
Wind1.5 mph NW
Humidity88%
Visibility6.2 mi
Dew point39°

Monthly outlook for Harney, SD: average high 58.4°, average low 40.5°. That is 0° above the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 17 October (72.7°), the coolest 16 October (28.3°).

58.4°/40.5°
Average high / low
+0°
Above normal
3 / 3
Wet days / normal
1.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
14 October – 23 October59.3°59.5°-0.1°
24 October – 2 November56.9°54.6°+1.3°
3 November – 12 Novemberat normal49.5°—

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).

Thu, 1546° / 35°0Clear
46 °Clear

Harney, Thursday, 15 October

Clear. High 46°, low 35°.

Pressure30.36 inHg
Wind15.4 mph NW
Humidity41%
Visibility6.2 mi
Dew point17°
Fri, 1656° / 28°0Clear
56 °Clear

Harney, Friday, 16 October

Clear. High 56°, low 28°.

Pressure30.65 inHg
Wind5.9 mph SE
Humidity44%
Visibility6.2 mi
Dew point13°
Sat, 1773° / 49°0Clear
73 °Clear

Harney, Saturday, 17 October

Clear. High 73°, low 49°.

Pressure30.03 inHg
Wind2.1 mph SE
Humidity21%
Visibility6.2 mi
Dew point30°
Sun, 1861° / 47°0Clear
61 °Clear

Harney, Sunday, 18 October

Clear. High 61°, low 47°.

Pressure30.12 inHg
Wind9.8 mph NW
Humidity36%
Visibility—
Dew point32°
Mon, 1970° / 41°0Partly cloudy
70 °Partly cloudy

Harney, Monday, 19 October

Partly cloudy. High 70°, low 41°.

Pressure29.83 inHg
Wind7.9 mph W
Humidity29%
Visibility—
Dew point31°
Tue, 2071° / 47°0Clear
71 °Clear

Harney, Tuesday, 20 October

Clear. High 71°, low 47°.

Pressure29.88 inHg
Wind9.1 mph E
Humidity16%
Visibility—
Dew point20°
Wed, 2156° / 42°0Overcast
56 °Overcast

Harney, Wednesday, 21 October

Overcast. High 56°, low 42°.

Pressure30.21 inHg
Wind8.1 mph SE
Humidity37%
Visibility—
Dew point26°
Thu, 2262° / 41°0Clear
62 °Clear

Harney, Thursday, 22 October

Clear. High 62°, low 41°.

Pressure30.03 inHg
Wind17.6 mph S
Humidity49%
Visibility—
Dew point38°
Fri, 2352° / 47°0.67Rain
52 °Rain

Harney, Friday, 23 October

Rain. High 52°, low 47°.

Pressure29.97 inHg
Wind12.8 mph S
Humidity91%
Visibility—
Dew point49°
Sat, 2446° / 34°0.41Rain
46 °Rain

Harney, Saturday, 24 October

Rain. High 46°, low 34°.

Pressure30.30 inHg
Wind23.1 mph N
Humidity56%
Visibility—
Dew point27°
Sun, 2558° / 30°0Clear
58 °Clear

Harney, Sunday, 25 October

Clear. High 58°, low 30°.

Pressure30.12 inHg
Wind7.1 mph W
Humidity26%
Visibility—
Dew point16°
Mon, 2658° / 40°0Clear
58 °Clear

Harney, Monday, 26 October

Clear. High 58°, low 40°.

Pressure29.85 inHg
Wind8.8 mph SE
Humidity24%
Visibility—
Dew point18°
Tue, 2761° / 40°0Clear
61 °Clear

Harney, Tuesday, 27 October

Clear. High 61°, low 40°.

Pressure29.68 inHg
Wind13.5 mph SW
Humidity34%
Visibility—
Dew point29°
Wed, 2857° / 42°0Partly cloudy
57 °Partly cloudy

Harney, Wednesday, 28 October

Partly cloudy. High 57°, low 42°.

Pressure29.80 inHg
Wind9.4 mph W
Humidity35%
Visibility—
Dew point27°
Thu, 2961° / 43°0Overcast
61 °Overcast

Harney, Thursday, 29 October

Overcast. High 61°, low 43°.

Pressure29.56 inHg
Wind16.3 mph W
Humidity33%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)

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.