As of 12:37 CDT

Weather in Alpena, SD

79°

Alpena, Saturday, 10 October, 12:37

Clear. Feels like 78°. High 84°, low 64°.

Pressure29.56 inHg

Wind19.8 mph S

Humidity35%

Visibility6.2 mi

Dew point49°

See detailed hourly forecast

Monthly outlook for Alpena, SD: average high 61.5°, average low 44.4°. That is 1.2° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 10 October (84.3°), the coolest 17 October (26.4°).

61.5°/44.4°

Average high / low

+1.2°

Above normal

1 / 3

Wet days / normal

0.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 October – 19 October	61.4°	60.4°	+0.6°
20 October – 29 October	61.7°	56.5°	+2.9°
30 October – 8 November	at normal	50.4°	—

October records over 66 years

90.1°3 October 2025All-time high

10.8°27 October 2020All-time low

Sun, 1181° / 59°

81 °

Alpena, Sunday, 11 October

Overcast. High 81°, low 59°.

Pressure29.65 inHg

Wind8.7 mph S

Humidity40%

Visibility6.2 mi

Dew point53°

Mon, 1263° / 52°

63 °

Alpena, Monday, 12 October

Overcast. High 63°, low 52°.

Pressure29.74 inHg

Wind10.6 mph N

Humidity71%

Visibility6.2 mi

Dew point54°

Tue, 1356° / 48°

56 °

Alpena, Tuesday, 13 October

Overcast. High 56°, low 48°.

Pressure30.09 inHg

Wind10 mph N

Humidity61%

Visibility6.2 mi

Dew point39°

Wed, 1458° / 44°

58 °

Alpena, Wednesday, 14 October

Partly cloudy. High 58°, low 44°.

Pressure30.30 inHg

Wind7.8 mph N

Humidity58%

Visibility6.2 mi

Dew point39°

Thu, 1558° / 45°

0.1

58 °

Alpena, Thursday, 15 October

Light rain. High 58°, low 45°.

Pressure30.33 inHg

Wind6.1 mph E

Humidity83%

Visibility—

Dew point46°

Fri, 1647° / 33°

47 °

Alpena, Friday, 16 October

Overcast. High 47°, low 33°.

Pressure30.33 inHg

Wind28.2 mph NW

Humidity51%

Visibility—

Dew point25°

Sat, 1742° / 26°

42 °

Alpena, Saturday, 17 October

Clear. High 42°, low 26°.

Pressure30.62 inHg

Wind17.8 mph NW

Humidity33%

Visibility—

Dew point10°

Sun, 1858° / 32°

58 °

Alpena, Sunday, 18 October

Overcast. High 58°, low 32°.

Pressure30.09 inHg

Wind19.4 mph S

Humidity34%

Visibility—

Dew point21°

Mon, 1967° / 42°

67 °

Alpena, Monday, 19 October

Mostly clear. High 67°, low 42°.

Pressure29.97 inHg

Wind14.4 mph SE

Humidity44%

Visibility—

Dew point37°

Tue, 2069° / 51°

0.03

69 °

Alpena, Tuesday, 20 October

Light rain. High 69°, low 51°.

Pressure29.65 inHg

Wind19.7 mph NW

Humidity41%

Visibility—

Dew point39°

Wed, 2158° / 47°

58 °

Alpena, Wednesday, 21 October

Light rain. High 58°, low 47°.

Pressure29.97 inHg

Wind20.8 mph NW

Humidity47%

Visibility—

Dew point34°

Thu, 2262° / 47°

62 °

Alpena, Thursday, 22 October

Clear. High 62°, low 47°.

Pressure30.09 inHg

Wind16.8 mph NW

Humidity32%

Visibility—

Dew point29°

Fri, 2361° / 39°

61 °

Alpena, Friday, 23 October

Clear. High 61°, low 39°.

Pressure30.15 inHg

Wind11.5 mph SE

Humidity45%

Visibility—

Dew point33°

Sat, 2467° / 46°

67 °

Alpena, Saturday, 24 October

Overcast. High 67°, low 46°.

Pressure29.94 inHg

Wind13.8 mph SE

Humidity54%

Visibility—

Dew point43°

Sun, 2553° / 35°

53 °

Alpena, Sunday, 25 October

Overcast. High 53°, low 35°.

Pressure30.42 inHg

Wind22.4 mph N

Humidity61%

Visibility—

Dew point28°

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

Mon, 2657° / 38°

0.02

57 °

Alpena, Monday, 26 October

Climate normal for this date — 60-year average.

Average high57°

Average low38°

Average precipitation0.02 in

Chance of precipitation10%

Record high77° (1989)

Record low13° (2020)

Tue, 2755° / 38°

0.06

55 °

Alpena, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high55°

Average low38°

Average precipitation0.06 in

Chance of precipitation23%

Record high73° (1999)

Record low11° (2020)

Wed, 2854° / 37°

0.04

54 °

Alpena, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high54°

Average low37°

Average precipitation0.04 in

Chance of precipitation12%

Record high76° (2016)

Record low17° (2017)

Thu, 2953° / 37°

0.07

53 °

Alpena, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high53°

Average low37°

Average precipitation0.07 in

Chance of precipitation20%

Record high71° (1978)

Record low18° (1991)

Fri, 3052° / 36°

0.09

52 °

Alpena, Friday, 30 October

Climate normal for this date — 60-year average.

Average high52°

Average low36°

Average precipitation0.09 in

Chance of precipitation23%

Record high72° (1965)

Record low14° (1991)

Sat, 3152° / 35°

0.05

52 °

Alpena, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high52°

Average low35°

Average precipitation0.05 in

Chance of precipitation15%

Record high79° (2016)

Record low11° (2002)

Sun, 0151° / 35°

0.04

51 °

Alpena, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high51°

Average low35°

Average precipitation0.04 in

Chance of precipitation18%

Record high75° (1990)

Record low16° (2002)

Mon, 0251° / 34°

0.04

51 °

Alpena, Monday, 2 November

Climate normal for this date — 60-year average.

Average high51°

Average low34°

Average precipitation0.04 in

Chance of precipitation10%

Record high74° (2022)

Record low11° (1991)

Tue, 0350° / 35°

0.03

50 °

Alpena, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high50°

Average low35°

Average precipitation0.03 in

Chance of precipitation15%

Record high75° (1978)

Record low9° (1991)

Wed, 0450° / 32°

0.01

50 °

Alpena, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high50°

Average low32°

Average precipitation0.01 in

Chance of precipitation8%

Record high72° (1978)

Record low2° (1995)

Thu, 0550° / 33°

0.04

50 °

Alpena, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high50°

Average low33°

Average precipitation0.04 in

Chance of precipitation20%

Record high74° (2001)

Record low10° (2003)

Fri, 0649° / 33°

0.02

49 °

Alpena, Friday, 6 November

Climate normal for this date — 60-year average.

Average high49°

Average low33°

Average precipitation0.02 in

Chance of precipitation15%

Record high78° (2020)

Record low1° (2003)

Sat, 0750° / 32°

0.03

50 °

Alpena, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high50°

Average low32°

Average precipitation0.03 in

Chance of precipitation10%

Record high74° (2020)

Record low5° (1990)

Sun, 0848° / 32°

0.07

48 °

Alpena, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high48°

Average low32°

Average precipitation0.07 in

Chance of precipitation15%

Record high75° (1999)

Record low6° (2003)

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 Alpena, 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 Alpena, 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.