Monthly outlook for Ideal, SD: average high 64.9°, average low 45.3°. That is 2.5° above the climate normal for October. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 20 October (82.1°), the coolest 26 October (33.1°).
64.9°/45.3°
Average high / low
+2.5°
Above normal
2 / 3
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
67.9°
61.4°
+3.6°
21 October – 30 October
59.8°
57.2°
+1.5°
31 October – 9 November
at normal
51.2°
—
October records over 66 years
92.3°4 October 1975All-time high
7°27 October 2020All-time low
Mon, 1264° / 44°0
64 °
Ideal, Monday, 12 October
Overcast. High 64°, low 44°.
Pressure29.77 inHg
Wind10.4 mph NW
Humidity65%
Visibility6.2 mi
Dew point49°
Tue, 1355° / 40°0.06
55 °
Ideal, Tuesday, 13 October
Light rain. High 55°, low 40°.
Pressure30.06 inHg
Wind8 mph N
Humidity61%
Visibility6.2 mi
Dew point39°
Wed, 1460° / 42°0
60 °
Ideal, Wednesday, 14 October
Mostly clear. High 60°, low 42°.
Pressure30.24 inHg
Wind4.9 mph NE
Humidity51%
Visibility6.2 mi
Dew point37°
Thu, 1563° / 49°0.1
63 °
Ideal, Thursday, 15 October
Light rain. High 63°, low 49°.
Pressure30.27 inHg
Wind11.9 mph NW
Humidity56%
Visibility6.2 mi
Dew point43°
Fri, 1657° / 39°0
57 °
Ideal, Friday, 16 October
Clear. High 57°, low 39°.
Pressure30.77 inHg
Wind15.6 mph NW
Humidity45%
Visibility—
Dew point29°
Sat, 1772° / 43°0
72 °
Ideal, Saturday, 17 October
Clear. High 72°, low 43°.
Pressure30.03 inHg
Wind18.5 mph S
Humidity28%
Visibility—
Dew point28°
Sun, 1880° / 51°0
80 °
Ideal, Sunday, 18 October
Clear. High 80°, low 51°.
Pressure29.88 inHg
Wind16.1 mph SW
Humidity21%
Visibility—
Dew point30°
Mon, 1977° / 52°0
77 °
Ideal, Monday, 19 October
Partly cloudy. High 77°, low 52°.
Pressure29.91 inHg
Wind10.1 mph SE
Humidity29%
Visibility—
Dew point35°
Tue, 2082° / 52°0
82 °
Ideal, Tuesday, 20 October
Clear. High 82°, low 52°.
Pressure29.56 inHg
Wind19.1 mph NW
Humidity29%
Visibility—
Dew point40°
Wed, 2157° / 51°0.01
57 °
Ideal, Wednesday, 21 October
Light rain. High 57°, low 51°.
Pressure29.88 inHg
Wind15.1 mph NW
Humidity40%
Visibility—
Dew point32°
Thu, 2260° / 46°0
60 °
Ideal, Thursday, 22 October
Mostly clear. High 60°, low 46°.
Pressure30.00 inHg
Wind23.8 mph NW
Humidity29%
Visibility—
Dew point24°
Fri, 2357° / 38°0
57 °
Ideal, Friday, 23 October
Clear. High 57°, low 38°.
Pressure30.21 inHg
Wind12.9 mph SE
Humidity31%
Visibility—
Dew point21°
Sat, 2475° / 48°0
75 °
Ideal, Saturday, 24 October
Overcast. High 75°, low 48°.
Pressure29.59 inHg
Wind16.4 mph SE
Humidity26%
Visibility—
Dew point29°
Sun, 2556° / 41°0
56 °
Ideal, Sunday, 25 October
Partly cloudy. High 56°, low 41°.
Pressure29.91 inHg
Wind18.6 mph NW
Humidity43%
Visibility—
Dew point31°
Mon, 2653° / 33°0
53 °
Ideal, Monday, 26 October
Clear. High 53°, low 33°.
Pressure30.18 inHg
Wind6 mph NW
Humidity43%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2757° / 39°0.04
57 °
Ideal, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high57°
Average low39°
Average precipitation0.04 in
Chance of precipitation18%
Record high77° (2016)
Record low7° (2020)
Wed, 2856° / 38°0.06
56 °
Ideal, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high56°
Average low38°
Average precipitation0.06 in
Chance of precipitation17%
Record high78° (2016)
Record low21° (1991)
Thu, 2955° / 37°0.07
55 °
Ideal, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low37°
Average precipitation0.07 in
Chance of precipitation27%
Record high76° (1978)
Record low14° (1991)
Fri, 3053° / 37°0.06
53 °
Ideal, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.06 in
Chance of precipitation27%
Record high80° (1968)
Record low11° (1991)
Sat, 3153° / 36°0.04
53 °
Ideal, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low36°
Average precipitation0.04 in
Chance of precipitation15%
Record high83° (2016)
Record low13° (2002)
Sun, 0152° / 36°0.04
52 °
Ideal, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.04 in
Chance of precipitation18%
Record high78° (1990)
Record low9° (2002)
Mon, 0252° / 35°0.04
52 °
Ideal, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.04 in
Chance of precipitation17%
Record high76° (2022)
Record low8° (1991)
Tue, 0351° / 35°0.04
51 °
Ideal, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.04 in
Chance of precipitation22%
Record high72° (1978)
Record low7° (1991)
Wed, 0452° / 33°0.01
52 °
Ideal, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low33°
Average precipitation0.01 in
Chance of precipitation10%
Record high75° (1978)
Record low3° (1995)
Thu, 0552° / 34°0.03
52 °
Ideal, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.03 in
Chance of precipitation13%
Record high77° (2001)
Record low13° (2003)
Fri, 0651° / 33°0.04
51 °
Ideal, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.04 in
Chance of precipitation13%
Record high78° (2020)
Record low2° (2003)
Sat, 0752° / 33°0.04
52 °
Ideal, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low33°
Average precipitation0.04 in
Chance of precipitation13%
Record high75° (1999)
Record low1° (1991)
Sun, 0851° / 34°0.06
51 °
Ideal, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.06 in
Chance of precipitation13%
Record high78° (1999)
Record low8° (1991)
Mon, 0947° / 32°0.06
47 °
Ideal, Monday, 9 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.06 in
Chance of precipitation18%
Record high71° (2016)
Record low6° (2000)
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 Ideal, 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 Ideal, 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.