As of 06:06 MDT

Weather in Harney, SD

36°Current weather

Harney, Tuesday, 13 October, 06:06

Overcast. Feels like 32°. High 44°, low 36°.

Pressure29.97 inHg
Wind4 mph SE
Humidity93%
Visibility4.0 mi
Dew point35°

Monthly outlook for Harney, SD: average high 55.6°, average low 38.8°. That is 1.7° below the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 17 October (74.4°), the coolest 16 October (26.7°).

55.6°/38.8°
Average high / low
−1.7°
Below normal
4 / 3
Wet days / normal
1.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
13 October – 22 October58.2°59.8°-0.9°
23 October – 1 November51.2°55.1°-2.2°
2 November – 11 Novemberat normal49.9°—

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).

Wed, 1446° / 38°0.39Rain
46 °Rain

Harney, Wednesday, 14 October

Rain. High 46°, low 38°.

Pressure30.18 inHg
Wind4 mph SE
Humidity66%
Visibility6.2 mi
Dew point37°
Thu, 1553° / 37°0.12Rain
53 °Rain

Harney, Thursday, 15 October

Rain. High 53°, low 37°.

Pressure30.42 inHg
Wind17.4 mph N
Humidity40%
Visibility6.2 mi
Dew point18°
Fri, 1660° / 27°0Clear
60 °Clear

Harney, Friday, 16 October

Clear. High 60°, low 27°.

Pressure30.56 inHg
Wind7.2 mph SE
Humidity41%
Visibility6.2 mi
Dew point21°
Sat, 1774° / 52°0Partly cloudy
74 °Partly cloudy

Harney, Saturday, 17 October

Partly cloudy. High 74°, low 52°.

Pressure29.94 inHg
Wind14.3 mph W
Humidity22%
Visibility—
Dew point29°
Sun, 1861° / 47°0Overcast
61 °Overcast

Harney, Sunday, 18 October

Overcast. High 61°, low 47°.

Pressure30.00 inHg
Wind12.8 mph W
Humidity35%
Visibility—
Dew point32°
Mon, 1969° / 43°0Clear
69 °Clear

Harney, Monday, 19 October

Clear. High 69°, low 43°.

Pressure29.88 inHg
Wind16.7 mph S
Humidity31%
Visibility—
Dew point30°
Tue, 2072° / 50°0Mostly clear
72 °Mostly clear

Harney, Tuesday, 20 October

Mostly clear. High 72°, low 50°.

Pressure29.65 inHg
Wind9.9 mph SW
Humidity21%
Visibility—
Dew point27°
Wed, 2157° / 46°0.01Light rain
57 °Light rain

Harney, Wednesday, 21 October

Light rain. High 57°, low 46°.

Pressure29.68 inHg
Wind10.6 mph NW
Humidity51%
Visibility—
Dew point38°
Thu, 2244° / 39°0.23Rain
44 °Rain

Harney, Thursday, 22 October

Rain. High 44°, low 39°.

Pressure29.83 inHg
Wind8 mph NW
Humidity83%
Visibility—
Dew point36°
Fri, 2346° / 34°0Clear
46 °Clear

Harney, Friday, 23 October

Clear. High 46°, low 34°.

Pressure30.06 inHg
Wind18.7 mph NW
Humidity45%
Visibility—
Dew point24°
Sat, 2447° / 31°0Overcast
47 °Overcast

Harney, Saturday, 24 October

Overcast. High 47°, low 31°.

Pressure30.27 inHg
Wind11.4 mph SE
Humidity37%
Visibility—
Dew point20°
Sun, 2549° / 33°0.01Light rain
49 °Light rain

Harney, Sunday, 25 October

Light rain. High 49°, low 33°.

Pressure30.09 inHg
Wind7.3 mph E
Humidity41%
Visibility—
Dew point24°
Mon, 2647° / 35°0Overcast
47 °Overcast

Harney, Monday, 26 October

Overcast. High 47°, low 35°.

Pressure30.30 inHg
Wind7.5 mph E
Humidity51%
Visibility—
Dew point27°
Tue, 2757° / 35°0Clear
57 °Clear

Harney, Tuesday, 27 October

Clear. High 57°, low 35°.

Pressure30.15 inHg
Wind5.7 mph W
Humidity34%
Visibility—
Dew point24°
Wed, 2862° / 38°0Partly cloudy
62 °Partly cloudy

Harney, Wednesday, 28 October

Partly cloudy. High 62°, low 38°.

Pressure29.97 inHg
Wind7 mph W
Humidity34%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)

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.