Monthly outlook for Alpena, SD: average high 62.6°, average low 46.5°. That is 3.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 22 October (75.2°), the coolest 26 October (36.8°).
62.6°/46.5°
Average high / low
+3.3°
Above normal
2 / 3
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
63.7°
58.1°
+3.1°
26 October – 4 November
60.7°
52.6°
+4.5°
5 November – 14 November
at normal
46.4°
—
October records over 66 years
90.1°3 October 2025All-time high
10.8°27 October 2020All-time low
Sat, 1765° / 39°0
65 °
Alpena, Saturday, 17 October
Clear. High 65°, low 39°.
Pressure30.21 inHg
Wind15.3 mph S
Humidity43%
Visibility6.2 mi
Dew point34°
Sun, 1866° / 45°0
66 °
Alpena, Sunday, 18 October
Clear. High 66°, low 45°.
Pressure30.06 inHg
Wind6.3 mph S
Humidity50%
Visibility6.2 mi
Dew point41°
Mon, 1963° / 42°0
63 °
Alpena, Monday, 19 October
Clear. High 63°, low 42°.
Pressure30.18 inHg
Wind6.1 mph SE
Humidity65%
Visibility6.2 mi
Dew point45°
Tue, 2067° / 47°0
67 °
Alpena, Tuesday, 20 October
Clear. High 67°, low 47°.
Pressure30.09 inHg
Wind11.7 mph SE
Humidity72%
Visibility6.2 mi
Dew point50°
Wed, 2168° / 51°0
68 °
Alpena, Wednesday, 21 October
Clear. High 68°, low 51°.
Pressure30.12 inHg
Wind8.7 mph S
Humidity69%
Visibility—
Dew point53°
Thu, 2275° / 51°0.01
75 °
Alpena, Thursday, 22 October
Light rain. High 75°, low 51°.
Pressure29.97 inHg
Wind11.3 mph E
Humidity58%
Visibility—
Dew point53°
Fri, 2374° / 63°0.18
74 °
Alpena, Friday, 23 October
Light rain. High 74°, low 63°.
Pressure29.74 inHg
Wind20.5 mph S
Humidity64%
Visibility—
Dew point57°
Sat, 2461° / 48°0.27
61 °
Alpena, Saturday, 24 October
Rain. High 61°, low 48°.
Pressure30.12 inHg
Wind12.5 mph NW
Humidity43%
Visibility—
Dew point35°
Sun, 2547° / 44°0.02
47 °
Alpena, Sunday, 25 October
Light rain. High 47°, low 44°.
Pressure30.30 inHg
Wind14.6 mph NW
Humidity60%
Visibility—
Dew point34°
Mon, 2653° / 37°0
53 °
Alpena, Monday, 26 October
Clear. High 53°, low 37°.
Pressure30.39 inHg
Wind7 mph S
Humidity40%
Visibility—
Dew point24°
Tue, 2760° / 40°0
60 °
Alpena, Tuesday, 27 October
Mostly clear. High 60°, low 40°.
Pressure30.09 inHg
Wind17.3 mph S
Humidity44%
Visibility—
Dew point35°
Wed, 2868° / 51°0.02
68 °
Alpena, Wednesday, 28 October
Light rain. High 68°, low 51°.
Pressure29.71 inHg
Wind18.8 mph S
Humidity63%
Visibility—
Dew point49°
Thu, 2958° / 50°0
58 °
Alpena, Thursday, 29 October
Overcast. High 58°, low 50°.
Pressure29.80 inHg
Wind22.7 mph W
Humidity55%
Visibility—
Dew point40°
Fri, 3057° / 43°0
57 °
Alpena, Friday, 30 October
Overcast. High 57°, low 43°.
Pressure30.12 inHg
Wind13.3 mph NW
Humidity49%
Visibility—
Dew point34°
Sat, 3168° / 54°0
68 °
Alpena, Saturday, 31 October
Overcast. High 68°, low 54°.
Pressure29.59 inHg
Wind13.6 mph S
Humidity47%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 0946° / 31°0.07
46 °
Alpena, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.07 in
Chance of precipitation20%
Record high67° (1999)
Record low11° (2018)
Tue, 1044° / 28°0.05
44 °
Alpena, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.05 in
Chance of precipitation22%
Record high65° (2016)
Record low1° (1986)
Wed, 1143° / 27°0.02
43 °
Alpena, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.02 in
Chance of precipitation13%
Record high67° (2005)
Record low-5° (1986)
Thu, 1243° / 27°0.06
43 °
Alpena, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.06 in
Chance of precipitation22%
Record high68° (1999)
Record low-1° (1966)
Fri, 1346° / 29°0.02
46 °
Alpena, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low29°
Average precipitation0.02 in
Chance of precipitation18%
Record high72° (1999)
Record low1° (1986)
Sat, 1445° / 29°0.02
45 °
Alpena, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.02 in
Chance of precipitation13%
Record high75° (2025)
Record low2° (2014)
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.