Monthly outlook for Onaka, SD: average high 58.5°, average low 41.8°. That is 1.1° above the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 18 October (77.1°), the coolest 26 October (27.6°).
58.5°/41.8°
Average high / low
+1.1°
Above normal
2 / 3
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
61.1°
57.6°
+2°
21 October – 30 October
54.1°
53.4°
+0.4°
31 October – 9 November
at normal
47.3°
—
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).
Mon, 1258° / 47°0.11
58 °
Onaka, Monday, 12 October
Rain. High 58°, low 47°.
Pressure29.80 inHg
Wind6.6 mph N
Humidity81%
Visibility6.2 mi
Dew point49°
Tue, 1350° / 43°0.18
50 °
Onaka, Tuesday, 13 October
Rain. High 50°, low 43°.
Pressure30.09 inHg
Wind7.4 mph NW
Humidity84%
Visibility5.1 mi
Dew point41°
Wed, 1456° / 37°0
56 °
Onaka, Wednesday, 14 October
Clear. High 56°, low 37°.
Pressure30.27 inHg
Wind2.5 mph NE
Humidity58%
Visibility6.2 mi
Dew point37°
Thu, 1556° / 45°0.02
56 °
Onaka, Thursday, 15 October
Light rain. High 56°, low 45°.
Pressure30.27 inHg
Wind13.8 mph NW
Humidity63%
Visibility6.2 mi
Dew point41°
Fri, 1654° / 34°0
54 °
Onaka, Friday, 16 October
Clear. High 54°, low 34°.
Pressure30.71 inHg
Wind12.6 mph N
Humidity49%
Visibility—
Dew point29°
Sat, 1763° / 41°0
63 °
Onaka, Saturday, 17 October
Partly cloudy. High 63°, low 41°.
Pressure30.12 inHg
Wind18.7 mph S
Humidity36%
Visibility—
Dew point28°
Sun, 1877° / 48°0
77 °
Onaka, Sunday, 18 October
Clear. High 77°, low 48°.
Pressure29.85 inHg
Wind11.9 mph NW
Humidity22%
Visibility—
Dew point31°
Mon, 1969° / 48°0
69 °
Onaka, Monday, 19 October
Mostly clear. High 69°, low 48°.
Pressure30.12 inHg
Wind14.8 mph E
Humidity34%
Visibility—
Dew point34°
Tue, 2069° / 47°0
69 °
Onaka, Tuesday, 20 October
Overcast. High 69°, low 47°.
Pressure29.77 inHg
Wind20.7 mph S
Humidity46%
Visibility—
Dew point41°
Wed, 2166° / 51°0.02
66 °
Onaka, Wednesday, 21 October
Light rain. High 66°, low 51°.
Pressure29.85 inHg
Wind14.1 mph SW
Humidity22%
Visibility—
Dew point23°
Thu, 2265° / 48°0.02
65 °
Onaka, Thursday, 22 October
Light rain. High 65°, low 48°.
Pressure29.88 inHg
Wind15.9 mph N
Humidity26%
Visibility—
Dew point26°
Fri, 2353° / 41°0.02
53 °
Onaka, Friday, 23 October
Light rain. High 53°, low 41°.
Pressure30.27 inHg
Wind17 mph NW
Humidity42%
Visibility—
Dew point28°
Sat, 2439° / 33°0
39 °
Onaka, Saturday, 24 October
Overcast. High 39°, low 33°.
Pressure30.47 inHg
Wind15.5 mph NW
Humidity60%
Visibility—
Dew point25°
Sun, 2562° / 30°0
62 °
Onaka, Sunday, 25 October
Clear. High 62°, low 30°.
Pressure30.03 inHg
Wind16.6 mph W
Humidity23%
Visibility—
Dew point15°
Mon, 2639° / 28°0
39 °
Onaka, Monday, 26 October
Overcast. High 39°, low 28°.
Pressure30.39 inHg
Wind18.9 mph NW
Humidity44%
Visibility—
Dew point16°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2753° / 36°0.03
53 °
Onaka, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high53°
Average low36°
Average precipitation0.03 in
Chance of precipitation22%
Record high71° (1966)
Record low9° (2020)
Wed, 2852° / 35°0.05
52 °
Onaka, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.05 in
Chance of precipitation13%
Record high73° (2016)
Record low19° (2023)
Thu, 2951° / 35°0.08
51 °
Onaka, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.08 in
Chance of precipitation32%
Record high69° (1978)
Record low14° (1991)
Fri, 3050° / 34°0.06
50 °
Onaka, Friday, 30 October
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.06 in
Chance of precipitation22%
Record high71° (1965)
Record low9° (1991)
Sat, 3150° / 34°0.04
50 °
Onaka, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.04 in
Chance of precipitation17%
Record high74° (1990)
Record low14° (1991)
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)
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.