As of 21:24 MDT

Weather in Promise, SD

48°

Promise, Monday, 19 October, 21:24

Clear. Feels like 44°. High 67°, low 36°.

Pressure30.15 inHg

Wind9.2 mph SE

Humidity64%

Visibility6.2 mi

Dew point38°

See detailed hourly forecast

Monthly outlook for Promise, SD: average high 60.8°, average low 41.8°. That is 3.8° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 20 October (71.3°), the coolest 28 October (27.1°).

60.8°/41.8°

Average high / low

+3.8°

Above normal

1 / 3

Wet days / normal

0.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
19 October – 28 October	59.9°	56.2°	+2.1°
29 October – 7 November	62.4°	49.6°	+7.1°
8 November – 17 November	at normal	43.3°	—

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).

Tue, 2071° / 44°

71 °

Promise, Tuesday, 20 October

Clear. High 71°, low 44°.

Pressure30.06 inHg

Wind9.5 mph S

Humidity58%

Visibility6.2 mi

Dew point49°

Wed, 2166° / 43°

66 °

Promise, Wednesday, 21 October

Partly cloudy. High 66°, low 43°.

Pressure30.24 inHg

Wind7.1 mph NE

Humidity64%

Visibility6.2 mi

Dew point48°

Thu, 2271° / 51°

71 °

Promise, Thursday, 22 October

Overcast. High 71°, low 51°.

Pressure30.03 inHg

Wind12.8 mph S

Humidity66%

Visibility6.2 mi

Dew point56°

Fri, 2371° / 59°

0.02

71 °

Promise, Friday, 23 October

Light rain. High 71°, low 59°.

Pressure29.77 inHg

Wind17.5 mph SE

Humidity63%

Visibility6.2 mi

Dew point54°

Sat, 2462° / 47°

0.08

62 °

Promise, Saturday, 24 October

Light rain. High 62°, low 47°.

Pressure30.21 inHg

Wind17.2 mph NW

Humidity44%

Visibility—

Dew point33°

Sun, 2551° / 41°

51 °

Promise, Sunday, 25 October

Overcast. High 51°, low 41°.

Pressure30.47 inHg

Wind13 mph N

Humidity49%

Visibility—

Dew point28°

Mon, 2648° / 34°

48 °

Promise, Monday, 26 October

Overcast. High 48°, low 34°.

Pressure30.45 inHg

Wind10.2 mph N

Humidity33%

Visibility—

Dew point16°

Tue, 2741° / 28°

41 °

Promise, Tuesday, 27 October

Clear. High 41°, low 28°.

Pressure30.74 inHg

Wind11.3 mph NW

Humidity28%

Visibility—

Dew point6°

Wed, 2851° / 27°

51 °

Promise, Wednesday, 28 October

Clear. High 51°, low 27°.

Pressure30.42 inHg

Wind10.4 mph S

Humidity27%

Visibility—

Dew point11°

Thu, 2955° / 34°

55 °

Promise, Thursday, 29 October

Clear. High 55°, low 34°.

Pressure30.09 inHg

Wind6.9 mph SE

Humidity30%

Visibility—

Dew point18°

Fri, 3059° / 38°

59 °

Promise, Friday, 30 October

Partly cloudy. High 59°, low 38°.

Pressure29.88 inHg

Wind6 mph SE

Humidity49%

Visibility—

Dew point33°

Sat, 3164° / 43°

0.01

64 °

Promise, Saturday, 31 October

Light rain. High 64°, low 43°.

Pressure29.85 inHg

Wind10.3 mph SE

Humidity50%

Visibility—

Dew point39°

Sun, 0166° / 49°

66 °

Promise, Sunday, 1 November

Overcast. High 66°, low 49°.

Pressure30.00 inHg

Wind10.7 mph E

Humidity50%

Visibility—

Dew point42°

Mon, 0266° / 47°

66 °

Promise, Monday, 2 November

Clear. High 66°, low 47°.

Pressure30.09 inHg

Wind9.5 mph NW

Humidity29%

Visibility—

Dew point28°

Tue, 0364° / 47°

64 °

Promise, Tuesday, 3 November

Overcast. High 64°, low 47°.

Pressure30.00 inHg

Wind6.8 mph S

Humidity31%

Visibility—

Dew point28°

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

Wed, 0449° / 33°

0.01

49 °

Promise, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high49°

Average low33°

Average precipitation0.01 in

Chance of precipitation7%

Record high76° (1978)

Record low2° (1991)

Thu, 0549° / 33°

0.04

49 °

Promise, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high49°

Average low33°

Average precipitation0.04 in

Chance of precipitation18%

Record high69° (1975)

Record low7° (2003)

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)

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.