Monthly outlook for Onaka, SD: average high 57.5°, average low 40.5°. That is 1.8° above the climate normal for October. Precipitation is expected on 4 days (about 0.5 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 23 October (76.3°), the coolest 31 October (31.9°).
57.5°/40.5°
Average high / low
+1.8°
Above normal
4 / 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
63.4°
55.9°
+4.2°
26 October – 4 November
47.7°
50.2°
-1.4°
5 November – 14 November
at normal
43.6°
—
October records over 66 years
91.4°5 October 1963All-time high
7.5°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Brentwood Colony (9 mi).
Sat, 1765° / 39°0
65 °
Onaka, Saturday, 17 October
Clear. High 65°, low 39°.
Pressure30.15 inHg
Wind9.1 mph S
Humidity42%
Visibility6.2 mi
Dew point33°
Sun, 1865° / 41°0
65 °
Onaka, Sunday, 18 October
Clear. High 65°, low 41°.
Pressure30.03 inHg
Wind5.1 mph NE
Humidity54%
Visibility6.2 mi
Dew point43°
Mon, 1960° / 43°0
60 °
Onaka, Monday, 19 October
Clear. High 60°, low 43°.
Pressure30.15 inHg
Wind8.7 mph E
Humidity70%
Visibility6.2 mi
Dew point44°
Tue, 2061° / 45°0
61 °
Onaka, Tuesday, 20 October
Overcast. High 61°, low 45°.
Pressure30.06 inHg
Wind13.1 mph SE
Humidity74%
Visibility—
Dew point47°
Wed, 2168° / 51°0
68 °
Onaka, Wednesday, 21 October
Light rain. High 68°, low 51°.
Pressure30.03 inHg
Wind10.8 mph S
Humidity68%
Visibility—
Dew point52°
Thu, 2270° / 46°0
70 °
Onaka, Thursday, 22 October
Clear. High 70°, low 46°.
Pressure30.09 inHg
Wind14.9 mph SE
Humidity29%
Visibility—
Dew point29°
Fri, 2376° / 60°0.09
76 °
Onaka, Friday, 23 October
Light rain. High 76°, low 60°.
Pressure29.74 inHg
Wind23.2 mph S
Humidity52%
Visibility—
Dew point53°
Sat, 2470° / 41°0.07
70 °
Onaka, Saturday, 24 October
Light rain. High 70°, low 41°.
Pressure29.85 inHg
Wind22.7 mph S
Humidity69%
Visibility—
Dew point42°
Sun, 2551° / 35°0
51 °
Onaka, Sunday, 25 October
Clear. High 51°, low 35°.
Pressure30.36 inHg
Wind14.1 mph NW
Humidity43%
Visibility—
Dew point25°
Mon, 2644° / 36°0.02
44 °
Onaka, Monday, 26 October
Light rain. High 44°, low 36°.
Pressure30.00 inHg
Wind11.1 mph NE
Humidity72%
Visibility—
Dew point35°
Tue, 2754° / 36°0
54 °
Onaka, Tuesday, 27 October
Clear. High 54°, low 36°.
Pressure29.77 inHg
Wind19.6 mph W
Humidity40%
Visibility—
Dew point27°
Wed, 2850° / 35°0
50 °
Onaka, Wednesday, 28 October
Overcast. High 50°, low 35°.
Pressure29.80 inHg
Wind17.1 mph E
Humidity51%
Visibility—
Dew point28°
Thu, 2941° / 36°0.24
41 °
Onaka, Thursday, 29 October
Snow. High 41°, low 36°.
Pressure29.80 inHg
Wind16.1 mph NE
Humidity92%
Visibility—
Dew point38°
Fri, 3041° / 34°0.04
41 °
Onaka, Friday, 30 October
Light snow. High 41°, low 34°.
Pressure29.88 inHg
Wind14.6 mph NW
Humidity81%
Visibility—
Dew point31°
Sat, 3157° / 32°0
57 °
Onaka, Saturday, 31 October
Overcast. High 57°, low 32°.
Pressure29.80 inHg
Wind11.7 mph SW
Humidity55%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0149° / 33°0.04
49 °
Onaka, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.04 in
Chance of precipitation18%
Record high73° (1990)
Record low14° (1984)
Mon, 0249° / 33°0.02
49 °
Onaka, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.02 in
Chance of precipitation7%
Record high73° (1978)
Record low8° (1991)
Tue, 0347° / 33°0.03
47 °
Onaka, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.03 in
Chance of precipitation13%
Record high70° (1978)
Record low4° (1991)
Wed, 0448° / 31°0.01
48 °
Onaka, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.01 in
Chance of precipitation8%
Record high71° (1978)
Record low4° (1991)
Thu, 0547° / 31°0.04
47 °
Onaka, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.04 in
Chance of precipitation17%
Record high72° (2016)
Record low6° (2003)
Fri, 0647° / 31°0.02
47 °
Onaka, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.02 in
Chance of precipitation12%
Record high71° (2016)
Record low5° (2003)
Sat, 0747° / 30°0.04
47 °
Onaka, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.04 in
Chance of precipitation12%
Record high69° (2006)
Record low2° (1991)
Sun, 0846° / 30°0.06
46 °
Onaka, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.06 in
Chance of precipitation17%
Record high71° (1978)
Record low1° (2003)
Mon, 0943° / 29°0.04
43 °
Onaka, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.04 in
Chance of precipitation22%
Record high65° (2016)
Record low10° (1979)
Tue, 1041° / 26°0.06
41 °
Onaka, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.06 in
Chance of precipitation22%
Record high62° (2016)
Record low0° (1986)
Wed, 1140° / 25°0.02
40 °
Onaka, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high40°
Average low25°
Average precipitation0.02 in
Chance of precipitation13%
Record high65° (2005)
Record low-1° (1986)
Thu, 1241° / 25°0.04
41 °
Onaka, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.04 in
Chance of precipitation18%
Record high65° (1999)
Record low-3° (1986)
Fri, 1343° / 27°0.03
43 °
Onaka, Friday, 13 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.03 in
Chance of precipitation23%
Record high67° (1999)
Record low-9° (1986)
Sat, 1442° / 27°0.02
42 °
Onaka, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high42°
Average low27°
Average precipitation0.02 in
Chance of precipitation15%
Record high65° (2025)
Record low-7° (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 Onaka, 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 Onaka, 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.