As of 13:23 MDT

Weather in Promise, SD

65°

Promise, Wednesday, 21 October, 13:23

Overcast. Feels like 63°. High 67°, low 44°.

Pressure30.21 inHg

Wind5.9 mph NE

Humidity46%

Visibility6.2 mi

Dew point43°

See detailed hourly forecast

Monthly outlook for Promise, SD: average high 57.8°, average low 42.1°. That is 2.9° above the climate normal for October. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (74.8°), the coolest 5 November (34.2°).

57.8°/42.1°

Average high / low

+2.9°

Above normal

1 / 3

Wet days / normal

0.3 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
21 October – 30 October	58.5°	54.5°	+2.2°
31 October – 9 November	56.7°	48.5°	+4.5°
10 November – 19 November	at normal	42.4°	—

October records over 66 years

90.1°5 October 1990All-time high

-0°26 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Virginia (6 mi).

Thu, 2274° / 48°

74 °

Promise, Thursday, 22 October

Mostly clear. High 74°, low 48°.

Pressure30.00 inHg

Wind12.1 mph SE

Humidity57%

Visibility6.2 mi

Dew point53°

Fri, 2375° / 58°

75 °

Promise, Friday, 23 October

Overcast. High 75°, low 58°.

Pressure29.77 inHg

Wind16.3 mph SE

Humidity62%

Visibility6.2 mi

Dew point56°

Sat, 2463° / 46°

0.02

63 °

Promise, Saturday, 24 October

Light rain. High 63°, low 46°.

Pressure30.27 inHg

Wind17.2 mph NW

Humidity50%

Visibility6.2 mi

Dew point35°

Sun, 2544° / 40°

0.24

44 °

Promise, Sunday, 25 October

Light rain. High 44°, low 40°.

Pressure30.42 inHg

Wind9.1 mph NE

Humidity76%

Visibility2.1 mi

Dew point36°

Mon, 2644° / 39°

0.04

44 °

Promise, Monday, 26 October

Light rain. High 44°, low 39°.

Pressure30.47 inHg

Wind12.9 mph N

Humidity67%

Visibility—

Dew point32°

Tue, 2756° / 36°

56 °

Promise, Tuesday, 27 October

Overcast. High 56°, low 36°.

Pressure30.12 inHg

Wind13.6 mph S

Humidity60%

Visibility—

Dew point37°

Wed, 2850° / 42°

50 °

Promise, Wednesday, 28 October

Overcast. High 50°, low 42°.

Pressure30.15 inHg

Wind17 mph NW

Humidity30%

Visibility—

Dew point19°

Thu, 2958° / 38°

58 °

Promise, Thursday, 29 October

Clear. High 58°, low 38°.

Pressure30.21 inHg

Wind9.1 mph SE

Humidity19%

Visibility—

Dew point12°

Fri, 3055° / 46°

55 °

Promise, Friday, 30 October

Overcast. High 55°, low 46°.

Pressure29.83 inHg

Wind24.3 mph SE

Humidity43%

Visibility—

Dew point30°

Sat, 3166° / 50°

0.03

66 °

Promise, Saturday, 31 October

Light rain. High 66°, low 50°.

Pressure29.38 inHg

Wind18.4 mph SE

Humidity66%

Visibility—

Dew point48°

Sun, 0152° / 40°

0.01

52 °

Promise, Sunday, 1 November

Light rain. High 52°, low 40°.

Pressure30.09 inHg

Wind17 mph NW

Humidity38%

Visibility—

Dew point24°

Mon, 0255° / 37°

55 °

Promise, Monday, 2 November

Clear. High 55°, low 37°.

Pressure30.21 inHg

Wind10 mph S

Humidity31%

Visibility—

Dew point20°

Tue, 0358° / 40°

58 °

Promise, Tuesday, 3 November

Clear. High 58°, low 40°.

Pressure30.18 inHg

Wind6.3 mph NE

Humidity34%

Visibility—

Dew point24°

Wed, 0455° / 36°

55 °

Promise, Wednesday, 4 November

Clear. High 55°, low 36°.

Pressure29.97 inHg

Wind7 mph NE

Humidity43%

Visibility—

Dew point27°

Thu, 0553° / 34°

53 °

Promise, Thursday, 5 November

Clear. High 53°, low 34°.

Pressure29.59 inHg

Wind4.7 mph NW

Humidity33%

Visibility—

Dew point19°

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

Fri, 0649° / 32°

0.02

49 °

Promise, Friday, 6 November

Climate normal for this date — 60-year average.

Average high49°

Average low32°

Average precipitation0.02 in

Chance of precipitation10%

Record high71° (2016)

Record low8° (1991)

Sat, 0748° / 32°

0.04

48 °

Promise, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high48°

Average low32°

Average precipitation0.04 in

Chance of precipitation13%

Record high71° (2006)

Record low7° (1991)

Sun, 0847° / 32°

0.05

47 °

Promise, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high47°

Average low32°

Average precipitation0.05 in

Chance of precipitation13%

Record high73° (1999)

Record low9° (2003)

Mon, 0944° / 30°

0.04

44 °

Promise, Monday, 9 November

Climate normal for this date — 60-year average.

Average high44°

Average low30°

Average precipitation0.04 in

Chance of precipitation22%

Record high67° (2001)

Record low10° (2018)

Tue, 1043° / 27°

0.06

43 °

Promise, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high43°

Average low27°

Average precipitation0.06 in

Chance of precipitation23%

Record high67° (1989)

Record low1° (1986)

Wed, 1141° / 27°

0.01

41 °

Promise, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high41°

Average low27°

Average precipitation0.01 in

Chance of precipitation10%

Record high66° (2005)

Record low-1° (1986)

Thu, 1242° / 27°

0.03

42 °

Promise, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high42°

Average low27°

Average precipitation0.03 in

Chance of precipitation13%

Record high65° (2016)

Record low-5° (2022)

Fri, 1345° / 28°

0.02

45 °

Promise, Friday, 13 November

Climate normal for this date — 60-year average.

Average high45°

Average low28°

Average precipitation0.02 in

Chance of precipitation20%

Record high68° (1999)

Record low-5° (1986)

Sat, 1444° / 29°

0.02

44 °

Promise, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high44°

Average low29°

Average precipitation0.02 in

Chance of precipitation10%

Record high68° (2025)

Record low1° (2014)

Sun, 1542° / 28°

0.02

42 °

Promise, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high42°

Average low28°

Average precipitation0.02 in

Chance of precipitation13%

Record high62° (1975)

Record low3° (2014)

Mon, 1643° / 28°

0.02

43 °

Promise, Monday, 16 November

Climate normal for this date — 60-year average.

Average high43°

Average low28°

Average precipitation0.02 in

Chance of precipitation7%

Record high65° (2001)

Record low-2° (2022)

Tue, 1742° / 28°

0.02

42 °

Promise, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high42°

Average low28°

Average precipitation0.02 in

Chance of precipitation15%

Record high65° (2001)

Record low5° (1996)

Wed, 1842° / 26°

0.04

42 °

Promise, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high42°

Average low26°

Average precipitation0.04 in

Chance of precipitation20%

Record high58° (2020)

Record low1° (2022)

Thu, 1941° / 28°

0.03

41 °

Promise, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high41°

Average low28°

Average precipitation0.03 in

Chance of precipitation15%

Record high63° (1989)

Record low8° (1985)

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 Promise, 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 Promise, 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.