Monthly outlook for Onaka, SD: average high 63.4°, average low 45.5°. That is 4.1° above the climate normal for October. Precipitation is expected on 4 days (about 0.7 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 21 October (77°), the coolest 16 October (35.7°).
63.4°/45.5°
Average high / low
+4.1°
Above normal
4 / 3
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
63.3°
57.1°
+3.4°
22 October – 31 October
63.6°
52.8°
+6°
1 November – 10 November
at normal
46.3°
—
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).
Tue, 1351° / 42°0.27
51 °
Onaka, Tuesday, 13 October
Rain. High 51°, low 42°.
Pressure30.09 inHg
Wind7.2 mph NW
Humidity81%
Visibility6.2 mi
Dew point40°
Wed, 1456° / 37°0.09
56 °
Onaka, Wednesday, 14 October
Rain. High 56°, low 37°.
Pressure30.27 inHg
Wind0.8 mph E
Humidity57%
Visibility6.2 mi
Dew point36°
Thu, 1558° / 46°0
58 °
Onaka, Thursday, 15 October
Overcast. High 58°, low 46°.
Pressure30.27 inHg
Wind15.1 mph NW
Humidity59%
Visibility6.2 mi
Dew point43°
Fri, 1653° / 36°0
53 °
Onaka, Friday, 16 October
Clear. High 53°, low 36°.
Pressure30.74 inHg
Wind13.8 mph NW
Humidity54%
Visibility—
Dew point30°
Sat, 1765° / 42°0
65 °
Onaka, Saturday, 17 October
Clear. High 65°, low 42°.
Pressure29.97 inHg
Wind15.4 mph S
Humidity41%
Visibility—
Dew point33°
Sun, 1876° / 50°0
76 °
Onaka, Sunday, 18 October
Partly cloudy. High 76°, low 50°.
Pressure29.83 inHg
Wind8.6 mph W
Humidity23%
Visibility—
Dew point31°
Mon, 1971° / 52°0
71 °
Onaka, Monday, 19 October
Clear. High 71°, low 52°.
Pressure30.03 inHg
Wind9.2 mph E
Humidity32%
Visibility—
Dew point35°
Tue, 2072° / 48°0
72 °
Onaka, Tuesday, 20 October
Clear. High 72°, low 48°.
Pressure29.97 inHg
Wind16.8 mph SE
Humidity52%
Visibility—
Dew point46°
Wed, 2177° / 58°0.01
77 °
Onaka, Wednesday, 21 October
Light rain. High 77°, low 58°.
Pressure29.85 inHg
Wind15.9 mph S
Humidity52%
Visibility—
Dew point52°
Thu, 2265° / 50°0.04
65 °
Onaka, Thursday, 22 October
Light rain. High 65°, low 50°.
Pressure30.06 inHg
Wind9.6 mph N
Humidity38%
Visibility—
Dew point34°
Fri, 2359° / 42°0
59 °
Onaka, Friday, 23 October
Clear. High 59°, low 42°.
Pressure30.45 inHg
Wind10.8 mph SE
Humidity32%
Visibility—
Dew point24°
Sat, 2459° / 47°0.11
59 °
Onaka, Saturday, 24 October
Light rain. High 59°, low 47°.
Pressure29.88 inHg
Wind16.9 mph S
Humidity76%
Visibility—
Dew point50°
Sun, 2559° / 47°0
59 °
Onaka, Sunday, 25 October
Partly cloudy. High 59°, low 47°.
Pressure30.15 inHg
Wind22 mph N
Humidity31%
Visibility—
Dew point25°
Mon, 2665° / 43°0
65 °
Onaka, Monday, 26 October
Clear. High 65°, low 43°.
Pressure30.12 inHg
Wind9.1 mph S
Humidity22%
Visibility—
Dew point20°
Tue, 2773° / 47°0
73 °
Onaka, Tuesday, 27 October
Clear. High 73°, low 47°.
Pressure29.85 inHg
Wind10.5 mph S
Humidity30%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)
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.