Monthly outlook for Vivian, SD: average high 59.3°, average low 43.7°. That is 0.7° above the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 22 October (82°), the coolest 28 October (34.7°).
59.3°/43.7°
Average high / low
+0.7°
Above normal
4 / 3
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
64.7°
59.6°
+2.8°
26 October – 4 November
50.2°
53.8°
-2°
5 November – 14 November
at normal
48.3°
—
October records over 66 years
93°5 October 1963All-time high
6.3°26 October 2020All-time low
Sat, 1772° / 41°0
72 °
Vivian, Saturday, 17 October
Clear. High 72°, low 41°.
Pressure30.15 inHg
Wind11.2 mph S
Humidity35%
Visibility6.2 mi
Dew point32°
Sun, 1866° / 44°0
66 °
Vivian, Sunday, 18 October
Clear. High 66°, low 44°.
Pressure30.03 inHg
Wind8.1 mph N
Humidity52%
Visibility6.2 mi
Dew point42°
Mon, 1962° / 44°0
62 °
Vivian, Monday, 19 October
Clear. High 62°, low 44°.
Pressure30.09 inHg
Wind3.7 mph NE
Humidity72%
Visibility6.2 mi
Dew point45°
Tue, 2069° / 47°0
69 °
Vivian, Tuesday, 20 October
Mostly clear. High 69°, low 47°.
Pressure29.94 inHg
Wind12.6 mph SE
Humidity63%
Visibility—
Dew point49°
Wed, 2178° / 52°0
78 °
Vivian, Wednesday, 21 October
Clear. High 78°, low 52°.
Pressure29.94 inHg
Wind9.1 mph S
Humidity55%
Visibility—
Dew point52°
Thu, 2282° / 60°0.01
82 °
Vivian, Thursday, 22 October
Light rain. High 82°, low 60°.
Pressure29.85 inHg
Wind13.4 mph S
Humidity49%
Visibility—
Dew point53°
Fri, 2368° / 59°0.17
68 °
Vivian, Friday, 23 October
Light rain. High 68°, low 59°.
Pressure29.62 inHg
Wind23.2 mph S
Humidity79%
Visibility—
Dew point55°
Sat, 2449° / 42°0.1
49 °
Vivian, Saturday, 24 October
Light rain. High 49°, low 42°.
Pressure30.15 inHg
Wind25.4 mph W
Humidity48%
Visibility—
Dew point29°
Sun, 2551° / 37°0
51 °
Vivian, Sunday, 25 October
Clear. High 51°, low 37°.
Pressure30.42 inHg
Wind10.8 mph W
Humidity31%
Visibility—
Dew point19°
Mon, 2645° / 37°0.04
45 °
Vivian, Monday, 26 October
Light snow. High 45°, low 37°.
Pressure30.15 inHg
Wind10.3 mph NE
Humidity49%
Visibility—
Dew point25°
Tue, 2739° / 35°0.39
39 °
Vivian, Tuesday, 27 October
Snow. High 39°, low 35°.
Pressure30.09 inHg
Wind6.3 mph NE
Humidity92%
Visibility—
Dew point35°
Wed, 2846° / 35°0.01
46 °
Vivian, Wednesday, 28 October
Snow. High 46°, low 35°.
Pressure29.97 inHg
Wind6.4 mph SE
Humidity68%
Visibility—
Dew point32°
Thu, 2956° / 39°0
56 °
Vivian, Thursday, 29 October
Overcast. High 56°, low 39°.
Pressure30.00 inHg
Wind15.1 mph W
Humidity45%
Visibility—
Dew point31°
Fri, 3058° / 43°0
58 °
Vivian, Friday, 30 October
Mostly clear. High 58°, low 43°.
Pressure30.00 inHg
Wind8.4 mph SE
Humidity37%
Visibility—
Dew point28°
Sat, 3157° / 45°0
57 °
Vivian, Saturday, 31 October
Overcast. High 57°, low 45°.
Pressure29.97 inHg
Wind18.1 mph NW
Humidity28%
Visibility—
Dew point23°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0151° / 36°0.03
51 °
Vivian, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.03 in
Chance of precipitation22%
Record high76° (1990)
Record low12° (2002)
Mon, 0252° / 35°0.02
52 °
Vivian, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.02 in
Chance of precipitation17%
Record high74° (1964)
Record low7° (1991)
Tue, 0351° / 35°0.04
51 °
Vivian, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.04 in
Chance of precipitation22%
Record high72° (2020)
Record low5° (1991)
Wed, 0452° / 33°0.02
52 °
Vivian, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low33°
Average precipitation0.02 in
Chance of precipitation12%
Record high76° (1978)
Record low4° (1995)
Thu, 0552° / 34°0.04
52 °
Vivian, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.04 in
Chance of precipitation18%
Record high78° (2001)
Record low14° (2003)
Fri, 0651° / 33°0.04
51 °
Vivian, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.04 in
Chance of precipitation15%
Record high78° (2020)
Record low2° (2003)
Sat, 0751° / 32°0.04
51 °
Vivian, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low32°
Average precipitation0.04 in
Chance of precipitation12%
Record high74° (1999)
Record low-1° (1991)
Sun, 0851° / 33°0.07
51 °
Vivian, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.07 in
Chance of precipitation17%
Record high81° (1999)
Record low10° (1991)
Mon, 0947° / 32°0.04
47 °
Vivian, Monday, 9 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.04 in
Chance of precipitation20%
Record high71° (2016)
Record low7° (2000)
Tue, 1046° / 28°0.05
46 °
Vivian, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.05 in
Chance of precipitation25%
Record high70° (1989)
Record low-4° (1986)
Wed, 1144° / 29°0.02
44 °
Vivian, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.02 in
Chance of precipitation18%
Record high71° (2005)
Record low-7° (1986)
Thu, 1246° / 28°0.05
46 °
Vivian, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.05 in
Chance of precipitation17%
Record high72° (1999)
Record low-5° (1986)
Fri, 1348° / 30°0.03
48 °
Vivian, Friday, 13 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.03 in
Chance of precipitation18%
Record high73° (1990)
Record low-14° (1986)
Sat, 1447° / 30°0.02
47 °
Vivian, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.02 in
Chance of precipitation13%
Record high73° (2025)
Record low1° (1972)
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 Vivian, 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 Vivian, 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.