As of 13:44 MDT

Weather in Blacktail, SD

70°

Blacktail, Thursday, 8 October, 13:44

Partly cloudy. Feels like 68°. High 70°, low 41°.

Pressure29.97 inHg

Wind5.7 mph NE

Humidity25%

Visibility6.2 mi

Dew point33°

See detailed hourly forecast

Monthly outlook for Blacktail, SD: average high 56.4°, average low 37.6°. That is 0.1° below the climate normal for October. Precipitation is expected on 5 days (about 2.0 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 9 October (79.4°), the coolest 16 October (24.2°).

56.4°/37.6°

Average high / low

−0.1°

Below normal

5 / 4

Wet days / normal

2.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 October – 17 October	57.9°	57°	+0.5°
18 October – 27 October	53.9°	54.9°	-0.5°
28 October – 6 November	at normal	48.6°	—

October records over 66 years

86.9°4 October 1963All-time high

-5.4°30 October 1991All-time low

Climate normals and records are computed from the nearest reference point — Mountain Plains (8 mi).

Fri, 0979° / 44°

79 °

Blacktail, Friday, 9 October

Partly cloudy. High 79°, low 44°.

Pressure29.65 inHg

Wind8.7 mph SW

Humidity18%

Visibility6.2 mi

Dew point30°

Sat, 1079° / 50°

79 °

Blacktail, Saturday, 10 October

Light rain. High 79°, low 50°.

Pressure29.53 inHg

Wind9.1 mph SW

Humidity19%

Visibility6.2 mi

Dew point31°

Sun, 1150° / 42°

0.06

50 °

Blacktail, Sunday, 11 October

Light rain. High 50°, low 42°.

Pressure29.88 inHg

Wind7.6 mph N

Humidity82%

Visibility6.2 mi

Dew point42°

Mon, 1254° / 40°

0.03

54 °

Blacktail, Monday, 12 October

Light rain. High 54°, low 40°.

Pressure29.83 inHg

Wind6.3 mph N

Humidity69%

Visibility6.2 mi

Dew point44°

Tue, 1353° / 39°

0.07

53 °

Blacktail, Tuesday, 13 October

Light rain. High 53°, low 39°.

Pressure30.00 inHg

Wind8.2 mph SE

Humidity71%

Visibility—

Dew point40°

Wed, 1463° / 47°

0.46

63 °

Blacktail, Wednesday, 14 October

Rain. High 63°, low 47°.

Pressure29.47 inHg

Wind7.4 mph S

Humidity60%

Visibility—

Dew point48°

Thu, 1549° / 28°

1.31

49 °

Blacktail, Thursday, 15 October

Snow. High 49°, low 28°.

Pressure30.03 inHg

Wind21.6 mph W

Humidity98%

Visibility—

Dew point32°

Fri, 1634° / 24°

0.1

34 °

Blacktail, Friday, 16 October

Snow. High 34°, low 24°.

Pressure30.65 inHg

Wind16.7 mph NW

Humidity90%

Visibility—

Dew point29°

Sat, 1747° / 24°

47 °

Blacktail, Saturday, 17 October

Light rain. High 47°, low 24°.

Pressure30.27 inHg

Wind18.1 mph S

Humidity84%

Visibility—

Dew point39°

Sun, 1846° / 40°

46 °

Blacktail, Sunday, 18 October

Light rain. High 46°, low 40°.

Pressure30.00 inHg

Wind12.9 mph W

Humidity71%

Visibility—

Dew point36°

Mon, 1958° / 39°

58 °

Blacktail, Monday, 19 October

Clear. High 58°, low 39°.

Pressure30.03 inHg

Wind16.2 mph W

Humidity45%

Visibility—

Dew point32°

Tue, 2059° / 41°

59 °

Blacktail, Tuesday, 20 October

Overcast. High 59°, low 41°.

Pressure30.15 inHg

Wind7 mph SW

Humidity38%

Visibility—

Dew point30°

Wed, 2161° / 36°

61 °

Blacktail, Wednesday, 21 October

Partly cloudy. High 61°, low 36°.

Pressure29.94 inHg

Wind23.2 mph NW

Humidity29%

Visibility—

Dew point26°

Thu, 2246° / 32°

46 °

Blacktail, Thursday, 22 October

Clear. High 46°, low 32°.

Pressure30.21 inHg

Wind25.5 mph NW

Humidity36%

Visibility—

Dew point17°

Fri, 2354° / 35°

0.01

54 °

Blacktail, Friday, 23 October

Light snow. High 54°, low 35°.

Pressure29.50 inHg

Wind13.8 mph NW

Humidity29%

Visibility—

Dew point21°

From day 17 onward the outlook is built from 60-year climate statistics

Sat, 2454° / 36°

0.04

54 °

Blacktail, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high54°

Average low36°

Average precipitation0.04 in

Chance of precipitation23%

Record high73° (1965)

Record low13° (2020)

Sun, 2555° / 36°

0.03

55 °

Blacktail, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high55°

Average low36°

Average precipitation0.03 in

Chance of precipitation15%

Record high75° (1989)

Record low2° (2020)

Mon, 2654° / 35°

0.07

54 °

Blacktail, Monday, 26 October

Climate normal for this date — 60-year average.

Average high54°

Average low35°

Average precipitation0.07 in

Chance of precipitation22%

Record high72° (1960)

Record low-3° (2020)

Tue, 2752° / 33°

0.05

52 °

Blacktail, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high52°

Average low33°

Average precipitation0.05 in

Chance of precipitation27%

Record high75° (2016)

Record low14° (2023)

Wed, 2852° / 34°

0.06

52 °

Blacktail, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high52°

Average low34°

Average precipitation0.06 in

Chance of precipitation22%

Record high74° (2016)

Record low7° (1991)

Thu, 2950° / 33°

0.11

50 °

Blacktail, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high50°

Average low33°

Average precipitation0.11 in

Chance of precipitation37%

Record high76° (1968)

Record low-2° (1991)

Fri, 3048° / 31°

0.04

48 °

Blacktail, Friday, 30 October

Climate normal for this date — 60-year average.

Average high48°

Average low31°

Average precipitation0.04 in

Chance of precipitation27%

Record high73° (1968)

Record low-5° (1991)

Sat, 3148° / 31°

0.05

48 °

Blacktail, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high48°

Average low31°

Average precipitation0.05 in

Chance of precipitation23%

Record high71° (1999)

Record low1° (1991)

Sun, 0148° / 31°

0.08

48 °

Blacktail, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high48°

Average low31°

Average precipitation0.08 in

Chance of precipitation25%

Record high70° (1965)

Record low0° (2002)

Mon, 0247° / 31°

0.05

47 °

Blacktail, Monday, 2 November

Climate normal for this date — 60-year average.

Average high47°

Average low31°

Average precipitation0.05 in

Chance of precipitation25%

Record high73° (2008)

Record low-8° (1991)

Tue, 0347° / 31°

0.04

47 °

Blacktail, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high47°

Average low31°

Average precipitation0.04 in

Chance of precipitation23%

Record high71° (2020)

Record low-1° (1991)

Wed, 0450° / 31°

0.02

50 °

Blacktail, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high50°

Average low31°

Average precipitation0.02 in

Chance of precipitation17%

Record high71° (1978)

Record low8° (1967)

Thu, 0548° / 31°

0.04

48 °

Blacktail, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high48°

Average low31°

Average precipitation0.04 in

Chance of precipitation25%

Record high72° (2020)

Record low3° (2003)

Fri, 0648° / 30°

0.06

48 °

Blacktail, Friday, 6 November

Climate normal for this date — 60-year average.

Average high48°

Average low30°

Average precipitation0.06 in

Chance of precipitation18%

Record high70° (2020)

Record low7° (1991)

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 Blacktail, 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 Blacktail, 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.