As of 21:46 CDT

Weather in Alto, SD

51°

Alto, Monday, 12 October, 21:46

Clear. Feels like 49°. High 56°, low 48°.

Pressure29.94 inHg

Wind17.3 mph N

Humidity69%

Visibility6.2 mi

Dew point41°

See detailed hourly forecast

Monthly outlook for Alto, SD: average high 62.4°, average low 45.1°. That is 2.1° above the climate normal for October. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 21 October (79.4°), the coolest 14 October (37°).

62.4°/45.1°

Average high / low

+2.1°

Above normal

3 / 3

Wet days / normal

0.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
12 October – 21 October	64.6°	59.7°	+2.7°
22 October – 31 October	58.6°	55.2°	+1.9°
1 November – 10 November	at normal	49.1°	—

October records over 66 years

91°3 October 2025All-time high

1°27 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Canning (7 mi).

Tue, 1350° / 41°

0.01

50 °

Alto, Tuesday, 13 October

Light rain. High 50°, low 41°.

Pressure30.06 inHg

Wind7.2 mph NW

Humidity66%

Visibility6.2 mi

Dew point37°

Wed, 1455° / 37°

0.01

55 °

Alto, Wednesday, 14 October

Light rain. High 55°, low 37°.

Pressure30.27 inHg

Wind2.3 mph E

Humidity58%

Visibility6.2 mi

Dew point37°

Thu, 1559° / 47°

0.1

59 °

Alto, Thursday, 15 October

Rain. High 59°, low 47°.

Pressure30.30 inHg

Wind13.2 mph NW

Humidity54%

Visibility6.2 mi

Dew point40°

Fri, 1654° / 38°

54 °

Alto, Friday, 16 October

Clear. High 54°, low 38°.

Pressure30.74 inHg

Wind5.3 mph W

Humidity54%

Visibility6.2 mi

Dew point31°

Sat, 1772° / 41°

72 °

Alto, Saturday, 17 October

Clear. High 72°, low 41°.

Pressure30.00 inHg

Wind8.1 mph S

Humidity35%

Visibility—

Dew point33°

Sun, 1874° / 48°

74 °

Alto, Sunday, 18 October

Overcast. High 74°, low 48°.

Pressure29.88 inHg

Wind10.1 mph NE

Humidity36%

Visibility—

Dew point37°

Mon, 1970° / 48°

70 °

Alto, Monday, 19 October

Clear. High 70°, low 48°.

Pressure29.94 inHg

Wind9.6 mph SE

Humidity42%

Visibility—

Dew point40°

Tue, 2078° / 50°

78 °

Alto, Tuesday, 20 October

Clear. High 78°, low 50°.

Pressure29.77 inHg

Wind19.3 mph S

Humidity44%

Visibility—

Dew point45°

Wed, 2179° / 58°

0.31

79 °

Alto, Wednesday, 21 October

Rain. High 79°, low 58°.

Pressure29.56 inHg

Wind22.5 mph S

Humidity52%

Visibility—

Dew point55°

Thu, 2253° / 45°

0.14

53 °

Alto, Thursday, 22 October

Light rain. High 53°, low 45°.

Pressure29.80 inHg

Wind19.4 mph NW

Humidity81%

Visibility—

Dew point40°

Fri, 2358° / 42°

58 °

Alto, Friday, 23 October

Clear. High 58°, low 42°.

Pressure30.06 inHg

Wind17.1 mph NW

Humidity43%

Visibility—

Dew point32°

Sat, 2452° / 41°

52 °

Alto, Saturday, 24 October

Overcast. High 52°, low 41°.

Pressure30.45 inHg

Wind12.8 mph NW

Humidity49%

Visibility—

Dew point30°

Sun, 2555° / 40°

0.02

55 °

Alto, Sunday, 25 October

Light rain. High 55°, low 40°.

Pressure30.27 inHg

Wind12.8 mph NW

Humidity43%

Visibility—

Dew point28°

Mon, 2667° / 43°

67 °

Alto, Monday, 26 October

Overcast. High 67°, low 43°.

Pressure30.06 inHg

Wind18.5 mph NW

Humidity38%

Visibility—

Dew point34°

Tue, 2767° / 55°

67 °

Alto, Tuesday, 27 October

Clear. High 67°, low 55°.

Pressure30.00 inHg

Wind22 mph NW

Humidity41%

Visibility—

Dew point40°

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

Wed, 2854° / 37°

0.06

54 °

Alto, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high54°

Average low37°

Average precipitation0.06 in

Chance of precipitation15%

Record high75° (2016)

Record low20° (2023)

Thu, 2953° / 37°

0.07

53 °

Alto, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high53°

Average low37°

Average precipitation0.07 in

Chance of precipitation27%

Record high76° (1978)

Record low16° (1991)

Fri, 3052° / 36°

0.05

52 °

Alto, Friday, 30 October

Climate normal for this date — 60-year average.

Average high52°

Average low36°

Average precipitation0.05 in

Chance of precipitation23%

Record high74° (1965)

Record low12° (1991)

Sat, 3153° / 36°

0.04

53 °

Alto, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high53°

Average low36°

Average precipitation0.04 in

Chance of precipitation18%

Record high80° (1990)

Record low16° (1991)

Sun, 0150° / 36°

0.02

50 °

Alto, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high50°

Average low36°

Average precipitation0.02 in

Chance of precipitation15%

Record high74° (1990)

Record low16° (1991)

Mon, 0251° / 35°

0.02

51 °

Alto, Monday, 2 November

Climate normal for this date — 60-year average.

Average high51°

Average low35°

Average precipitation0.02 in

Chance of precipitation17%

Record high73° (2022)

Record low9° (1991)

Tue, 0350° / 35°

0.02

50 °

Alto, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high50°

Average low35°

Average precipitation0.02 in

Chance of precipitation17%

Record high71° (1978)

Record low6° (1991)

Wed, 0450° / 33°

0.01

50 °

Alto, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high50°

Average low33°

Average precipitation0.01 in

Chance of precipitation8%

Record high76° (1978)

Record low6° (1991)

Thu, 0551° / 34°

0.04

51 °

Alto, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high51°

Average low34°

Average precipitation0.04 in

Chance of precipitation15%

Record high74° (2001)

Record low14° (2003)

Fri, 0650° / 32°

0.02

50 °

Alto, Friday, 6 November

Climate normal for this date — 60-year average.

Average high50°

Average low32°

Average precipitation0.02 in

Chance of precipitation15%

Record high74° (2020)

Record low4° (2003)

Sat, 0750° / 32°

0.04

50 °

Alto, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high50°

Average low32°

Average precipitation0.04 in

Chance of precipitation13%

Record high71° (2006)

Record low1° (1971)

Sun, 0849° / 32°

0.07

49 °

Alto, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high49°

Average low32°

Average precipitation0.07 in

Chance of precipitation17%

Record high78° (1999)

Record low10° (1991)

Mon, 0946° / 31°

0.04

46 °

Alto, Monday, 9 November

Climate normal for this date — 60-year average.

Average high46°

Average low31°

Average precipitation0.04 in

Chance of precipitation22%

Record high67° (2016)

Record low10° (1966)

Tue, 1044° / 28°

0.05

44 °

Alto, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high44°

Average low28°

Average precipitation0.05 in

Chance of precipitation23%

Record high67° (1989)

Record low2° (1986)

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 Alto, 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 Alto, 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.