Monthly outlook for Onaka, SD: average high 59.1°, average low 45.1°. That is 2.5° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 22 October (69°), the coolest 16 October (36.3°).
59.1°/45.1°
Average high / low
+2.5°
Above normal
3 / 3
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
60.4°
56°
+2.5°
25 October – 3 November
56.9°
50.9°
+3.3°
4 November – 13 November
at normal
44.2°
—
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).
Fri, 1649° / 36°0
49 °
Onaka, Friday, 16 October
Clear. High 49°, low 36°.
Pressure30.71 inHg
Wind7 mph NW
Humidity61%
Visibility6.2 mi
Dew point30°
Sat, 1764° / 40°0
64 °
Onaka, Saturday, 17 October
Clear. High 64°, low 40°.
Pressure30.15 inHg
Wind10.4 mph S
Humidity41%
Visibility6.2 mi
Dew point32°
Sun, 1865° / 41°0
65 °
Onaka, Sunday, 18 October
Mostly clear. High 65°, low 41°.
Pressure30.06 inHg
Wind10.5 mph NE
Humidity48%
Visibility6.2 mi
Dew point42°
Mon, 1960° / 42°0
60 °
Onaka, Monday, 19 October
Clear. High 60°, low 42°.
Pressure30.15 inHg
Wind8.2 mph E
Humidity65%
Visibility6.2 mi
Dew point42°
Tue, 2063° / 44°0
63 °
Onaka, Tuesday, 20 October
Clear. High 63°, low 44°.
Pressure30.09 inHg
Wind11.1 mph SE
Humidity73%
Visibility—
Dew point48°
Wed, 2165° / 49°0
65 °
Onaka, Wednesday, 21 October
Partly cloudy. High 65°, low 49°.
Pressure29.94 inHg
Wind12.4 mph S
Humidity79%
Visibility—
Dew point53°
Thu, 2269° / 57°0
69 °
Onaka, Thursday, 22 October
Overcast. High 69°, low 57°.
Pressure29.85 inHg
Wind13.5 mph SE
Humidity77%
Visibility—
Dew point58°
Fri, 2362° / 59°0.24
62 °
Onaka, Friday, 23 October
Rain. High 62°, low 59°.
Pressure29.62 inHg
Wind17.5 mph SE
Humidity94%
Visibility—
Dew point60°
Sat, 2456° / 47°0.39
56 °
Onaka, Saturday, 24 October
Rain. High 56°, low 47°.
Pressure29.91 inHg
Wind25.1 mph W
Humidity51%
Visibility—
Dew point34°
Sun, 2554° / 38°0.03
54 °
Onaka, Sunday, 25 October
Light rain. High 54°, low 38°.
Pressure30.50 inHg
Wind12.4 mph W
Humidity29%
Visibility—
Dew point19°
Mon, 2656° / 44°0.02
56 °
Onaka, Monday, 26 October
Light rain. High 56°, low 44°.
Pressure30.24 inHg
Wind16.8 mph S
Humidity54%
Visibility—
Dew point38°
Tue, 2758° / 49°0
58 °
Onaka, Tuesday, 27 October
Overcast. High 58°, low 49°.
Pressure30.00 inHg
Wind14.9 mph S
Humidity47%
Visibility—
Dew point37°
Wed, 2865° / 46°0
65 °
Onaka, Wednesday, 28 October
Overcast. High 65°, low 46°.
Pressure29.88 inHg
Wind13 mph SW
Humidity63%
Visibility—
Dew point47°
Thu, 2956° / 46°0
56 °
Onaka, Thursday, 29 October
Clear. High 56°, low 46°.
Pressure30.21 inHg
Wind22.4 mph NW
Humidity30%
Visibility—
Dew point21°
Fri, 3053° / 40°0
53 °
Onaka, Friday, 30 October
Clear. High 53°, low 40°.
Pressure30.45 inHg
Wind9.9 mph NW
Humidity30%
Visibility—
Dew point19°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)
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.