Monthly outlook for Vienna, SD: average high 58.3°, average low 43.4°. That is 1.4° above the climate normal for October. Precipitation is expected on 6 days (about 1.0 inches), against a normal of 3 days and 1.1 inches. The warmest day looks like 10 October (82.8°), the coolest 17 October (24.6°).
58.3°/43.4°
Average high / low
+1.4°
Above normal
6 / 3
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
60.1°
56.7°
+1.9°
19 October – 28 October
55.3°
53.1°
+1.2°
29 October – 7 November
at normal
47.3°
—
October records over 66 years
85.6°1 October 2023All-time high
6.3°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Henry (12 mi).
Sat, 1083° / 60°0
83 °
Vienna, Saturday, 10 October
Clear. High 83°, low 60°.
Pressure29.56 inHg
Wind18 mph S
Humidity46%
Visibility6.2 mi
Dew point53°
Sun, 1177° / 53°0
77 °
Vienna, Sunday, 11 October
Overcast. High 77°, low 53°.
Pressure29.68 inHg
Wind5.8 mph SE
Humidity52%
Visibility6.2 mi
Dew point55°
Mon, 1258° / 51°0.1
58 °
Vienna, Monday, 12 October
Rain. High 58°, low 51°.
Pressure29.83 inHg
Wind7.8 mph N
Humidity86%
Visibility6.2 mi
Dew point51°
Tue, 1353° / 47°0
53 °
Vienna, Tuesday, 13 October
Overcast. High 53°, low 47°.
Pressure30.09 inHg
Wind7.1 mph N
Humidity76%
Visibility6.2 mi
Dew point43°
Wed, 1457° / 46°0
57 °
Vienna, Wednesday, 14 October
Overcast. High 57°, low 46°.
Pressure30.30 inHg
Wind7.6 mph NE
Humidity62%
Visibility—
Dew point40°
Thu, 1557° / 43°0.07
57 °
Vienna, Thursday, 15 October
Light rain. High 57°, low 43°.
Pressure30.21 inHg
Wind13.9 mph W
Humidity71%
Visibility—
Dew point46°
Fri, 1647° / 33°0.17
47 °
Vienna, Friday, 16 October
Snow. High 47°, low 33°.
Pressure30.00 inHg
Wind28.3 mph NW
Humidity95%
Visibility—
Dew point35°
Sat, 1738° / 25°0
38 °
Vienna, Saturday, 17 October
Clear. High 38°, low 25°.
Pressure30.56 inHg
Wind18.6 mph NW
Humidity53%
Visibility—
Dew point18°
Sun, 1856° / 35°0
56 °
Vienna, Sunday, 18 October
Overcast. High 56°, low 35°.
Pressure30.00 inHg
Wind21.2 mph S
Humidity39%
Visibility—
Dew point26°
Mon, 1960° / 38°0
60 °
Vienna, Monday, 19 October
Partly cloudy. High 60°, low 38°.
Pressure30.15 inHg
Wind15.9 mph SE
Humidity35%
Visibility—
Dew point28°
Tue, 2060° / 48°0.11
60 °
Vienna, Tuesday, 20 October
Light rain. High 60°, low 48°.
Pressure29.80 inHg
Wind18.2 mph S
Humidity62%
Visibility—
Dew point43°
Wed, 2157° / 48°0.22
57 °
Vienna, Wednesday, 21 October
Light rain. High 57°, low 48°.
Pressure29.83 inHg
Wind10 mph S
Humidity90%
Visibility—
Dew point49°
Thu, 2257° / 42°0
57 °
Vienna, Thursday, 22 October
Clear. High 57°, low 42°.
Pressure29.97 inHg
Wind7.9 mph SE
Humidity53%
Visibility—
Dew point37°
Fri, 2349° / 44°0.31
49 °
Vienna, Friday, 23 October
Rain. High 49°, low 44°.
Pressure29.88 inHg
Wind16 mph NW
Humidity82%
Visibility—
Dew point42°
Sat, 2449° / 35°0
49 °
Vienna, Saturday, 24 October
Mostly clear. High 49°, low 35°.
Pressure30.12 inHg
Wind15 mph NW
Humidity58%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2552° / 38°0.04
52 °
Vienna, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.04 in
Chance of precipitation17%
Record high77° (1989)
Record low17° (2020)
Mon, 2653° / 37°0.03
53 °
Vienna, Monday, 26 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.03 in
Chance of precipitation17%
Record high76° (1989)
Record low6° (2020)
Tue, 2751° / 37°0.07
51 °
Vienna, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.07 in
Chance of precipitation30%
Record high69° (1966)
Record low9° (2020)
Wed, 2850° / 36°0.03
50 °
Vienna, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.03 in
Chance of precipitation17%
Record high70° (2024)
Record low19° (2023)
Thu, 2950° / 36°0.07
50 °
Vienna, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.07 in
Chance of precipitation23%
Record high67° (2004)
Record low18° (1991)
Fri, 3049° / 35°0.09
49 °
Vienna, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.09 in
Chance of precipitation27%
Record high66° (1965)
Record low16° (1991)
Sat, 3149° / 33°0.06
49 °
Vienna, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.06 in
Chance of precipitation18%
Record high70° (1990)
Record low18° (2002)
Sun, 0147° / 34°0.05
47 °
Vienna, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.05 in
Chance of precipitation25%
Record high70° (1990)
Record low15° (1984)
Mon, 0247° / 33°0.04
47 °
Vienna, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.04 in
Chance of precipitation20%
Record high71° (1978)
Record low8° (1991)
Tue, 0346° / 33°0.04
46 °
Vienna, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.04 in
Chance of precipitation22%
Record high69° (1978)
Record low6° (1991)
Wed, 0446° / 31°0.02
46 °
Vienna, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.02 in
Chance of precipitation15%
Record high68° (2015)
Record low0° (1991)
Thu, 0547° / 32°0.04
47 °
Vienna, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.04 in
Chance of precipitation15%
Record high69° (2016)
Record low10° (2003)
Fri, 0646° / 31°0.03
46 °
Vienna, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.03 in
Chance of precipitation15%
Record high72° (2020)
Record low4° (1991)
Sat, 0746° / 31°0.02
46 °
Vienna, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.02 in
Chance of precipitation10%
Record high69° (2020)
Record low2° (1991)
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 Vienna, 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 Vienna, 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.