As of 11:02 MDT

Weather in Harney, SD

45°Current weather

Harney, Friday, 16 October, 11:02

Clear. Feels like 43°. High 50°, low 28°.

Pressure30.65 inHg
Wind5.1 mph SE
Humidity45%
Visibility6.2 mi
Dew point26°

Monthly outlook for Harney, SD: average high 54.3°, average low 38.9°. That is 1.8° below the climate normal for October. Precipitation is expected on 4 days (about 0.4 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 20 October (70.5°), the coolest 16 October (27.9°).

54.3°/38.9°
Average high / low
−1.8°
Below normal
4 / 3
Wet days / normal
0.4 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
16 October – 25 October60°59.2°+0.4°
26 October – 4 November44.8°53.5°-4.8°
5 November – 14 Novemberat normal48.7°—

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).

Sat, 1769° / 41°0Clear
69 °Clear

Harney, Saturday, 17 October

Clear. High 69°, low 41°.

Pressure30.00 inHg
Wind2.3 mph SE
Humidity21%
Visibility6.2 mi
Dew point31°
Sun, 1863° / 43°0Clear
63 °Clear

Harney, Sunday, 18 October

Clear. High 63°, low 43°.

Pressure30.06 inHg
Wind9 mph N
Humidity32%
Visibility6.2 mi
Dew point32°
Mon, 1959° / 36°0Clear
59 °Clear

Harney, Monday, 19 October

Clear. High 59°, low 36°.

Pressure30.03 inHg
Wind5.8 mph SE
Humidity49%
Visibility6.2 mi
Dew point39°
Tue, 2071° / 45°0Mostly clear
71 °Mostly clear

Harney, Tuesday, 20 October

Mostly clear. High 71°, low 45°.

Pressure29.88 inHg
Wind8.1 mph SW
Humidity40%
Visibility—
Dew point40°
Wed, 2163° / 47°0Clear
63 °Clear

Harney, Wednesday, 21 October

Clear. High 63°, low 47°.

Pressure30.12 inHg
Wind9 mph W
Humidity49%
Visibility—
Dew point41°
Thu, 2266° / 45°0Mostly clear
66 °Mostly clear

Harney, Thursday, 22 October

Mostly clear. High 66°, low 45°.

Pressure30.06 inHg
Wind12.8 mph S
Humidity36%
Visibility—
Dew point33°
Fri, 2367° / 54°0.1Light rain
67 °Light rain

Harney, Friday, 23 October

Light rain. High 67°, low 54°.

Pressure29.65 inHg
Wind20.7 mph SW
Humidity48%
Visibility—
Dew point42°
Sat, 2453° / 36°0Clear
53 °Clear

Harney, Saturday, 24 October

Clear. High 53°, low 36°.

Pressure30.12 inHg
Wind10.5 mph N
Humidity40%
Visibility—
Dew point26°
Sun, 2540° / 34°0.04Light snow
40 °Light snow

Harney, Sunday, 25 October

Light snow. High 40°, low 34°.

Pressure30.27 inHg
Wind7.6 mph NE
Humidity40%
Visibility—
Dew point16°
Mon, 2644° / 30°0.01Light snow
44 °Light snow

Harney, Monday, 26 October

Light snow. High 44°, low 30°.

Pressure30.21 inHg
Wind9.9 mph SE
Humidity53%
Visibility—
Dew point24°
Tue, 2755° / 34°0Partly cloudy
55 °Partly cloudy

Harney, Tuesday, 27 October

Partly cloudy. High 55°, low 34°.

Pressure29.83 inHg
Wind7.5 mph E
Humidity41%
Visibility—
Dew point29°
Wed, 2842° / 39°0.07Light rain
42 °Light rain

Harney, Wednesday, 28 October

Light rain. High 42°, low 39°.

Pressure29.77 inHg
Wind6.4 mph N
Humidity96%
Visibility—
Dew point40°
Thu, 2947° / 40°0.11Light rain
47 °Light rain

Harney, Thursday, 29 October

Light rain. High 47°, low 40°.

Pressure29.94 inHg
Wind5.7 mph NW
Humidity79%
Visibility—
Dew point38°
Fri, 3045° / 37°0Overcast
45 °Overcast

Harney, Friday, 30 October

Overcast. High 45°, low 37°.

Pressure30.21 inHg
Wind9.9 mph NE
Humidity66%
Visibility—
Dew point33°
Sat, 3136° / 32°0.03Light snow
36 °Light snow

Harney, Saturday, 31 October

Light snow. High 36°, low 32°.

Pressure30.24 inHg
Wind7.3 mph N
Humidity94%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)

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.