Monthly outlook for Yankton, SD: average high 62°, average low 45.5°. That is 2.8° above the climate normal for October. Precipitation is expected on 7 days (about 1.2 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 22 October (72.5°), the coolest 1 November (28.8°).
62°/45.5°
Average high / low
+2.8°
Above normal
7 / 3
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
65.8°
58.9°
+3.8°
28 October – 6 November
55.8°
53.1°
+1.5°
7 November – 16 November
at normal
47.7°
—
October records over 66 years
93°3 October 2025All-time high
5°27 October 2020All-time low
Mon, 1963° / 43°0
63 °
Yankton, Monday, 19 October
Mostly clear. High 63°, low 43°.
Pressure30.24 inHg
Wind6.5 mph SE
Humidity64%
Visibility6.2 mi
Dew point45°
Tue, 2068° / 47°0
68 °
Yankton, Tuesday, 20 October
Clear. High 68°, low 47°.
Pressure30.21 inHg
Wind9.6 mph SE
Humidity64%
Visibility6.2 mi
Dew point49°
Wed, 2171° / 51°0
71 °
Yankton, Wednesday, 21 October
Clear. High 71°, low 51°.
Pressure30.15 inHg
Wind3.5 mph S
Humidity68%
Visibility6.2 mi
Dew point54°
Thu, 2273° / 52°0
73 °
Yankton, Thursday, 22 October
Clear. High 73°, low 52°.
Pressure30.15 inHg
Wind12.7 mph SE
Humidity58%
Visibility—
Dew point52°
Fri, 2372° / 57°0.18
72 °
Yankton, Friday, 23 October
Light rain. High 72°, low 57°.
Pressure29.91 inHg
Wind19.6 mph SE
Humidity56%
Visibility—
Dew point50°
Sat, 2465° / 49°0.16
65 °
Yankton, Saturday, 24 October
Light rain. High 65°, low 49°.
Pressure30.24 inHg
Wind17.4 mph NW
Humidity60%
Visibility—
Dew point43°
Sun, 2557° / 41°0
57 °
Yankton, Sunday, 25 October
Clear. High 57°, low 41°.
Pressure30.45 inHg
Wind11.5 mph SE
Humidity33%
Visibility—
Dew point25°
Mon, 2664° / 50°0.06
64 °
Yankton, Monday, 26 October
Light rain. High 64°, low 50°.
Pressure30.09 inHg
Wind10.4 mph SE
Humidity78%
Visibility—
Dew point53°
Tue, 2758° / 53°0.26
58 °
Yankton, Tuesday, 27 October
Light rain. High 58°, low 53°.
Pressure30.06 inHg
Wind16.2 mph S
Humidity85%
Visibility—
Dew point51°
Wed, 2869° / 53°0.05
69 °
Yankton, Wednesday, 28 October
Light rain. High 69°, low 53°.
Pressure29.68 inHg
Wind16.2 mph S
Humidity43%
Visibility—
Dew point42°
Thu, 2962° / 47°0
62 °
Yankton, Thursday, 29 October
Clear. High 62°, low 47°.
Pressure29.83 inHg
Wind9.8 mph W
Humidity33%
Visibility—
Dew point29°
Fri, 3057° / 37°0.2
57 °
Yankton, Friday, 30 October
Light rain. High 57°, low 37°.
Pressure29.44 inHg
Wind24.9 mph W
Humidity75%
Visibility—
Dew point48°
Sat, 3136° / 33°0.26
36 °
Yankton, Saturday, 31 October
Snow. High 36°, low 33°.
Pressure29.71 inHg
Wind31.6 mph W
Humidity89%
Visibility—
Dew point31°
Sun, 0151° / 29°0
51 °
Yankton, Sunday, 1 November
Clear. High 51°, low 29°.
Pressure30.24 inHg
Wind16.1 mph NW
Humidity49%
Visibility—
Dew point25°
Mon, 0259° / 42°0
59 °
Yankton, Monday, 2 November
Overcast. High 59°, low 42°.
Pressure29.91 inHg
Wind18.5 mph S
Humidity50%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0352° / 36°0.06
52 °
Yankton, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.06 in
Chance of precipitation23%
Record high74° (1978)
Record low6° (1991)
Wed, 0452° / 35°0.02
52 °
Yankton, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.02 in
Chance of precipitation12%
Record high73° (1975)
Record low-6° (1991)
Thu, 0553° / 36°0.04
53 °
Yankton, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low36°
Average precipitation0.04 in
Chance of precipitation20%
Record high74° (2001)
Record low12° (1990)
Fri, 0652° / 35°0.03
52 °
Yankton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.03 in
Chance of precipitation12%
Record high76° (2020)
Record low9° (1991)
Sat, 0752° / 35°0.02
52 °
Yankton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.02 in
Chance of precipitation12%
Record high74° (2001)
Record low-9° (1991)
Sun, 0851° / 35°0.05
51 °
Yankton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.05 in
Chance of precipitation13%
Record high79° (1999)
Record low-2° (1991)
Mon, 0949° / 34°0.12
49 °
Yankton, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.12 in
Chance of precipitation23%
Record high73° (1999)
Record low15° (2018)
Tue, 1047° / 31°0.07
47 °
Yankton, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.07 in
Chance of precipitation22%
Record high67° (2016)
Record low8° (1986)
Wed, 1145° / 29°0.05
45 °
Yankton, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.05 in
Chance of precipitation20%
Record high73° (2005)
Record low-1° (1986)
Thu, 1245° / 29°0.05
45 °
Yankton, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.05 in
Chance of precipitation25%
Record high69° (2005)
Record low6° (1986)
Fri, 1348° / 31°0.04
48 °
Yankton, Friday, 13 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.04 in
Chance of precipitation20%
Record high72° (1999)
Record low-9° (1986)
Sat, 1447° / 32°0.02
47 °
Yankton, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.02 in
Chance of precipitation15%
Record high79° (2025)
Record low11° (2000)
Sun, 1547° / 31°0.07
47 °
Yankton, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.07 in
Chance of precipitation22%
Record high70° (2001)
Record low6° (2000)
Mon, 1648° / 30°0.06
48 °
Yankton, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.06 in
Chance of precipitation13%
Record high74° (2021)
Record low2° (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 Yankton, 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 Yankton, 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.