As of 12:11 MDT

Weather in Promise, SD

74°

Promise, Thursday, 22 October, 12:11

Overcast. Feels like 73°. High 74°, low 47°.

Pressure30.00 inHg

Wind11.6 mph S

Humidity59%

Visibility6.2 mi

Dew point57°

See detailed hourly forecast

Monthly outlook for Promise, SD: average high 61°, average low 42.6°. That is 5° above the climate normal for October. Precipitation is expected on 3 days (about 1.4 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (77°), the coolest 29 October (31.7°).

61°/42.6°

Average high / low

+5°

Above normal

3 / 3

Wet days / normal

1.4 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
22 October – 31 October	57.4°	53.9°	+2°
1 November – 10 November	67.1°	47.7°	+10.8°
11 November – 20 November	at normal	42.1°	—

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).

Fri, 2377° / 57°

77 °

Promise, Friday, 23 October

Overcast. High 77°, low 57°.

Pressure29.68 inHg

Wind17 mph SE

Humidity55%

Visibility6.2 mi

Dew point56°

Sat, 2464° / 42°

64 °

Promise, Saturday, 24 October

Clear. High 64°, low 42°.

Pressure30.33 inHg

Wind15.1 mph NW

Humidity45%

Visibility6.2 mi

Dew point26°

Sun, 2547° / 40°

0.21

47 °

Promise, Sunday, 25 October

Rain. High 47°, low 40°.

Pressure30.47 inHg

Wind6.8 mph SE

Humidity55%

Visibility6.2 mi

Dew point29°

Mon, 2642° / 38°

0.94

42 °

Promise, Monday, 26 October

Rain. High 42°, low 38°.

Pressure30.47 inHg

Wind14.2 mph NE

Humidity89%

Visibility1.8 mi

Dew point36°

Tue, 2746° / 39°

0.23

46 °

Promise, Tuesday, 27 October

Light rain. High 46°, low 39°.

Pressure30.15 inHg

Wind11.6 mph NE

Humidity86%

Visibility—

Dew point39°

Wed, 2855° / 37°

55 °

Promise, Wednesday, 28 October

Mostly clear. High 55°, low 37°.

Pressure29.88 inHg

Wind24.3 mph NW

Humidity56%

Visibility—

Dew point37°

Thu, 2949° / 32°

49 °

Promise, Thursday, 29 October

Clear. High 49°, low 32°.

Pressure30.39 inHg

Wind15.9 mph NW

Humidity37%

Visibility—

Dew point19°

Fri, 3056° / 35°

56 °

Promise, Friday, 30 October

Partly cloudy. High 56°, low 35°.

Pressure29.88 inHg

Wind12.2 mph S

Humidity41%

Visibility—

Dew point27°

Sat, 3163° / 40°

63 °

Promise, Saturday, 31 October

Clear. High 63°, low 40°.

Pressure29.71 inHg

Wind6.9 mph NW

Humidity53%

Visibility—

Dew point37°

Sun, 0160° / 41°

60 °

Promise, Sunday, 1 November

Mostly clear. High 60°, low 41°.

Pressure30.06 inHg

Wind9.1 mph W

Humidity28%

Visibility—

Dew point22°

Mon, 0266° / 43°

66 °

Promise, Monday, 2 November

Overcast. High 66°, low 43°.

Pressure30.06 inHg

Wind11.3 mph NW

Humidity48%

Visibility—

Dew point37°

Tue, 0361° / 42°

61 °

Promise, Tuesday, 3 November

Mostly clear. High 61°, low 42°.

Pressure30.27 inHg

Wind12.9 mph SE

Humidity28%

Visibility—

Dew point23°

Wed, 0471° / 45°

71 °

Promise, Wednesday, 4 November

Clear. High 71°, low 45°.

Pressure29.88 inHg

Wind15.2 mph S

Humidity35%

Visibility—

Dew point33°

Thu, 0572° / 50°

72 °

Promise, Thursday, 5 November

Mostly clear. High 72°, low 50°.

Pressure29.83 inHg

Wind7.5 mph N

Humidity32%

Visibility—

Dew point33°

Fri, 0673° / 53°

73 °

Promise, Friday, 6 November

Clear. High 73°, low 53°.

Pressure29.88 inHg

Wind12 mph SE

Humidity22%

Visibility—

Dew point26°

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

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)

Fri, 2039° / 26°

0.02

39 °

Promise, Friday, 20 November

Climate normal for this date — 60-year average.

Average high39°

Average low26°

Average precipitation0.02 in

Chance of precipitation8%

Record high62° (1962)

Record low1° (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.