As of 13:54 CDT

Weather in Armour, SD

78°

Armour, Sunday, 11 October, 13:54

Overcast. Feels like 78°. High 78°, low 58°.

Pressure29.68 inHg

Wind5.5 mph SW

Humidity43%

Visibility6.2 mi

Dew point54°

See detailed hourly forecast

Monthly outlook for Armour, SD: average high 67°, average low 48.4°. That is 3.8° above the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 24 October (79.9°), the coolest 17 October (35.5°).

67°/48.4°

Average high / low

+3.8°

Above normal

2 / 3

Wet days / normal

0.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
11 October – 20 October	66.1°	61.2°	+2.7°
21 October – 30 October	68.5°	57°	+6.4°
31 October – 9 November	at normal	51.4°	—

October records over 66 years

91.4°2 October 1997All-time high

7.2°27 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Lakeview Colony (9 mi).

Mon, 1273° / 53°

73 °

Armour, Monday, 12 October

Clear. High 73°, low 53°.

Pressure29.65 inHg

Wind8.7 mph NW

Humidity61%

Visibility6.2 mi

Dew point55°

Tue, 1357° / 49°

57 °

Armour, Tuesday, 13 October

Overcast. High 57°, low 49°.

Pressure30.03 inHg

Wind10.8 mph N

Humidity59%

Visibility6.2 mi

Dew point41°

Wed, 1461° / 44°

61 °

Armour, Wednesday, 14 October

Clear. High 61°, low 44°.

Pressure30.21 inHg

Wind8.1 mph NE

Humidity52%

Visibility6.2 mi

Dew point38°

Thu, 1554° / 49°

0.49

54 °

Armour, Thursday, 15 October

Rain. High 54°, low 49°.

Pressure30.21 inHg

Wind11.5 mph N

Humidity88%

Visibility4.3 mi

Dew point47°

Fri, 1655° / 42°

55 °

Armour, Friday, 16 October

Clear. High 55°, low 42°.

Pressure30.68 inHg

Wind14.9 mph N

Humidity53%

Visibility—

Dew point34°

Sat, 1759° / 36°

59 °

Armour, Saturday, 17 October

Overcast. High 59°, low 36°.

Pressure30.39 inHg

Wind21.2 mph S

Humidity20%

Visibility—

Dew point12°

Sun, 1875° / 47°

75 °

Armour, Sunday, 18 October

Overcast. High 75°, low 47°.

Pressure29.94 inHg

Wind20.5 mph S

Humidity28%

Visibility—

Dew point32°

Mon, 1974° / 50°

74 °

Armour, Monday, 19 October

Partly cloudy. High 74°, low 50°.

Pressure30.09 inHg

Wind14.2 mph SE

Humidity32%

Visibility—

Dew point36°

Tue, 2073° / 52°

73 °

Armour, Tuesday, 20 October

Clear. High 73°, low 52°.

Pressure29.85 inHg

Wind20.5 mph S

Humidity38%

Visibility—

Dew point39°

Wed, 2171° / 52°

71 °

Armour, Wednesday, 21 October

Clear. High 71°, low 52°.

Pressure29.97 inHg

Wind12.1 mph NW

Humidity39%

Visibility—

Dew point39°

Thu, 2272° / 52°

0.08

72 °

Armour, Thursday, 22 October

Light rain. High 72°, low 52°.

Pressure30.06 inHg

Wind9.7 mph SE

Humidity40%

Visibility—

Dew point41°

Fri, 2370° / 53°

0.01

70 °

Armour, Friday, 23 October

Light rain. High 70°, low 53°.

Pressure30.15 inHg

Wind6.7 mph N

Humidity57%

Visibility—

Dew point49°

Sat, 2480° / 53°

80 °

Armour, Saturday, 24 October

Clear. High 80°, low 53°.

Pressure30.00 inHg

Wind16.2 mph S

Humidity46%

Visibility—

Dew point48°

Sun, 2563° / 47°

63 °

Armour, Sunday, 25 October

Overcast. High 63°, low 47°.

Pressure30.15 inHg

Wind20.5 mph NW

Humidity30%

Visibility—

Dew point29°

Mon, 2656° / 40°

56 °

Armour, Monday, 26 October

Mostly clear. High 56°, low 40°.

Pressure30.09 inHg

Wind13.5 mph NW

Humidity40%

Visibility—

Dew point28°

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

Tue, 2756° / 39°

0.05

56 °

Armour, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high56°

Average low39°

Average precipitation0.05 in

Chance of precipitation17%

Record high77° (1999)

Record low7° (2020)

Wed, 2855° / 38°

0.04

55 °

Armour, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high55°

Average low38°

Average precipitation0.04 in

Chance of precipitation18%

Record high78° (2016)

Record low22° (2017)

Thu, 2955° / 38°

0.07

55 °

Armour, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high55°

Average low38°

Average precipitation0.07 in

Chance of precipitation20%

Record high74° (1978)

Record low20° (1991)

Fri, 3053° / 38°

0.1

53 °

Armour, Friday, 30 October

Climate normal for this date — 60-year average.

Average high53°

Average low38°

Average precipitation0.1 in

Chance of precipitation30%

Record high76° (1965)

Record low17° (1991)

Sat, 3153° / 36°

0.06

53 °

Armour, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high53°

Average low36°

Average precipitation0.06 in

Chance of precipitation18%

Record high82° (2016)

Record low14° (2002)

Sun, 0152° / 37°

0.04

52 °

Armour, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high52°

Average low37°

Average precipitation0.04 in

Chance of precipitation13%

Record high75° (1990)

Record low14° (2002)

Mon, 0252° / 36°

0.05

52 °

Armour, Monday, 2 November

Climate normal for this date — 60-year average.

Average high52°

Average low36°

Average precipitation0.05 in

Chance of precipitation18%

Record high76° (2005)

Record low10° (1991)

Tue, 0351° / 36°

0.04

51 °

Armour, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high51°

Average low36°

Average precipitation0.04 in

Chance of precipitation15%

Record high74° (1978)

Record low7° (1991)

Wed, 0452° / 34°

0.01

52 °

Armour, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high52°

Average low34°

Average precipitation0.01 in

Chance of precipitation5%

Record high74° (1978)

Record low-8° (1991)

Thu, 0552° / 35°

0.03

52 °

Armour, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high52°

Average low35°

Average precipitation0.03 in

Chance of precipitation17%

Record high74° (2001)

Record low15° (2003)

Fri, 0651° / 35°

0.02

51 °

Armour, Friday, 6 November

Climate normal for this date — 60-year average.

Average high51°

Average low35°

Average precipitation0.02 in

Chance of precipitation12%

Record high79° (2020)

Record low7° (2003)

Sat, 0752° / 34°

0.02

52 °

Armour, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high52°

Average low34°

Average precipitation0.02 in

Chance of precipitation13%

Record high77° (2020)

Record low-2° (1991)

Sun, 0851° / 34°

0.06

51 °

Armour, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high51°

Average low34°

Average precipitation0.06 in

Chance of precipitation12%

Record high75° (1999)

Record low7° (1991)

Mon, 0948° / 33°

0.11

48 °

Armour, Monday, 9 November

Climate normal for this date — 60-year average.

Average high48°

Average low33°

Average precipitation0.11 in

Chance of precipitation23%

Record high70° (1999)

Record low13° (2018)

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 Armour, 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 Armour, 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.