Monthly outlook for Alto, SD: average high 61.7°, average low 44°. That is 1.2° above the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 10 October (88.7°), the coolest 17 October (26.3°).
61.7°/44°
Average high / low
+1.2°
Above normal
3 / 3
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
61.1°
60.5°
+0.3°
20 October – 29 October
62.8°
56.8°
+3.4°
30 October – 8 November
at normal
50.5°
—
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).
Sun, 1171° / 53°0
71 °
Alto, Sunday, 11 October
Light rain. High 71°, low 53°.
Pressure29.68 inHg
Wind10.1 mph N
Humidity64%
Visibility6.2 mi
Dew point56°
Mon, 1260° / 50°0.15
60 °
Alto, Monday, 12 October
Rain. High 60°, low 50°.
Pressure29.83 inHg
Wind7.4 mph N
Humidity82%
Visibility6.2 mi
Dew point51°
Tue, 1353° / 45°0
53 °
Alto, Tuesday, 13 October
Overcast. High 53°, low 45°.
Pressure30.12 inHg
Wind5 mph N
Humidity64%
Visibility6.2 mi
Dew point38°
Wed, 1458° / 41°0
58 °
Alto, Wednesday, 14 October
Clear. High 58°, low 41°.
Pressure30.30 inHg
Wind3.4 mph NE
Humidity61%
Visibility6.2 mi
Dew point40°
Thu, 1560° / 45°0.09
60 °
Alto, Thursday, 15 October
Light rain. High 60°, low 45°.
Pressure30.33 inHg
Wind5.2 mph NW
Humidity69%
Visibility—
Dew point45°
Fri, 1647° / 34°0
47 °
Alto, Friday, 16 October
Partly cloudy. High 47°, low 34°.
Pressure30.47 inHg
Wind30.4 mph NW
Humidity44%
Visibility—
Dew point22°
Sat, 1743° / 26°0
43 °
Alto, Saturday, 17 October
Clear. High 43°, low 26°.
Pressure30.62 inHg
Wind16.2 mph SE
Humidity24%
Visibility—
Dew point3°
Sun, 1859° / 36°0
59 °
Alto, Sunday, 18 October
Overcast. High 59°, low 36°.
Pressure30.03 inHg
Wind19.6 mph SE
Humidity41%
Visibility—
Dew point29°
Mon, 1971° / 47°0
71 °
Alto, Monday, 19 October
Partly cloudy. High 71°, low 47°.
Pressure29.88 inHg
Wind15.1 mph SE
Humidity37%
Visibility—
Dew point35°
Tue, 2069° / 49°0.06
69 °
Alto, Tuesday, 20 October
Light rain. High 69°, low 49°.
Pressure29.59 inHg
Wind24 mph NW
Humidity50%
Visibility—
Dew point43°
Wed, 2159° / 44°0
59 °
Alto, Wednesday, 21 October
Clear. High 59°, low 44°.
Pressure30.03 inHg
Wind20.6 mph NW
Humidity46%
Visibility—
Dew point32°
Thu, 2262° / 47°0
62 °
Alto, Thursday, 22 October
Clear. High 62°, low 47°.
Pressure30.12 inHg
Wind16.6 mph NW
Humidity30%
Visibility—
Dew point27°
Fri, 2367° / 42°0
67 °
Alto, Friday, 23 October
Clear. High 67°, low 42°.
Pressure30.06 inHg
Wind16.3 mph SE
Humidity32%
Visibility—
Dew point28°
Sat, 2465° / 47°0
65 °
Alto, Saturday, 24 October
Overcast. High 65°, low 47°.
Pressure29.91 inHg
Wind15.9 mph NW
Humidity55%
Visibility—
Dew point43°
Sun, 2556° / 36°0
56 °
Alto, Sunday, 25 October
Overcast. High 56°, low 36°.
Pressure30.50 inHg
Wind23.6 mph NW
Humidity55%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2657° / 39°0.02
57 °
Alto, Monday, 26 October
Climate normal for this date — 60-year average.
Average high57°
Average low39°
Average precipitation0.02 in
Chance of precipitation10%
Record high75° (2014)
Record low7° (2020)
Tue, 2755° / 38°0.04
55 °
Alto, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high55°
Average low38°
Average precipitation0.04 in
Chance of precipitation20%
Record high73° (2016)
Record low1° (2020)
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)
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.