Monthly outlook for Union Center, SD: average high 55.3°, average low 40.6°. That is 2.6° above the climate normal for October. Precipitation is expected on 3 days (about 0.4 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 31 October (64.9°), the coolest 27 October (31.5°).
55.3°/40.6°
Average high / low
+2.6°
Above normal
3 / 3
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
26 October – 4 November
53.2°
52.2°
+0.5°
5 November – 14 November
58.9°
46.7°
+6.8°
15 November – 24 November
at normal
42.9°
—
October records over 66 years
94.5°3 October 2025All-time high
-6.3°26 October 2020All-time low
Tue, 2759° / 32°0
59 °
Union Center, Tuesday, 27 October
Clear. High 59°, low 32°.
Pressure29.85 inHg
Wind12.2 mph W
Humidity48%
Visibility6.2 mi
Dew point37°
Wed, 2858° / 40°0.17
58 °
Union Center, Wednesday, 28 October
Rain. High 58°, low 40°.
Pressure29.94 inHg
Wind13.6 mph NW
Humidity44%
Visibility6.2 mi
Dew point33°
Thu, 2959° / 40°0
59 °
Union Center, Thursday, 29 October
Clear. High 59°, low 40°.
Pressure30.06 inHg
Wind3.2 mph S
Humidity54%
Visibility6.2 mi
Dew point38°
Fri, 3055° / 43°0
55 °
Union Center, Friday, 30 October
Overcast. High 55°, low 43°.
Pressure30.06 inHg
Wind10.2 mph E
Humidity85%
Visibility6.2 mi
Dew point45°
Sat, 3165° / 51°0
65 °
Union Center, Saturday, 31 October
Mostly clear. High 65°, low 51°.
Pressure29.85 inHg
Wind12.4 mph SE
Humidity63%
Visibility—
Dew point47°
Sun, 0158° / 44°0.13
58 °
Union Center, Sunday, 1 November
Light rain. High 58°, low 44°.
Pressure29.83 inHg
Wind23.7 mph NW
Humidity66%
Visibility—
Dew point42°
Mon, 0250° / 38°0
50 °
Union Center, Monday, 2 November
Overcast. High 50°, low 38°.
Pressure30.03 inHg
Wind25.1 mph NW
Humidity38%
Visibility—
Dew point22°
Tue, 0339° / 35°0.02
39 °
Union Center, Tuesday, 3 November
Light rain. High 39°, low 35°.
Pressure30.36 inHg
Wind27.6 mph NW
Humidity83%
Visibility—
Dew point31°
Wed, 0451° / 37°0
51 °
Union Center, Wednesday, 4 November
Overcast. High 51°, low 37°.
Pressure30.30 inHg
Wind13.4 mph SE
Humidity60%
Visibility—
Dew point33°
Thu, 0561° / 38°0
61 °
Union Center, Thursday, 5 November
Clear. High 61°, low 38°.
Pressure29.97 inHg
Wind16.4 mph S
Humidity41%
Visibility—
Dew point29°
Fri, 0661° / 42°0
61 °
Union Center, Friday, 6 November
Overcast. High 61°, low 42°.
Pressure29.74 inHg
Wind10.5 mph E
Humidity28%
Visibility—
Dew point23°
Sat, 0764° / 50°0.02
64 °
Union Center, Saturday, 7 November
Light rain. High 64°, low 50°.
Pressure29.35 inHg
Wind25.1 mph W
Humidity24%
Visibility—
Dew point25°
Sun, 0855° / 46°0
55 °
Union Center, Sunday, 8 November
Partly cloudy. High 55°, low 46°.
Pressure29.74 inHg
Wind23.3 mph W
Humidity23%
Visibility—
Dew point17°
Mon, 0957° / 41°0
57 °
Union Center, Monday, 9 November
Partly cloudy. High 57°, low 41°.
Pressure29.85 inHg
Wind26.7 mph NW
Humidity25%
Visibility—
Dew point16°
Tue, 1055° / 41°0
55 °
Union Center, Tuesday, 10 November
Clear. High 55°, low 41°.
Pressure30.09 inHg
Wind26.1 mph NW
Humidity40%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 1143° / 26°0.02
43 °
Union Center, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.02 in
Chance of precipitation15%
Record high68° (2005)
Record low-15° (1986)
Thu, 1245° / 26°0.02
45 °
Union Center, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low26°
Average precipitation0.02 in
Chance of precipitation10%
Record high73° (1999)
Record low-12° (1986)
Fri, 1346° / 27°0.04
46 °
Union Center, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low27°
Average precipitation0.04 in
Chance of precipitation17%
Record high71° (1990)
Record low-20° (1986)
Sat, 1446° / 29°0.02
46 °
Union Center, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low29°
Average precipitation0.02 in
Chance of precipitation13%
Record high72° (1990)
Record low-1° (2014)
Sun, 1545° / 27°0.01
45 °
Union Center, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high45°
Average low27°
Average precipitation0.01 in
Chance of precipitation8%
Record high65° (1999)
Record low-3° (1978)
Mon, 1646° / 27°0.02
46 °
Union Center, Monday, 16 November
Climate normal for this date — 60-year average.
Average high46°
Average low27°
Average precipitation0.02 in
Chance of precipitation8%
Record high65° (1979)
Record low5° (1978)
Tue, 1744° / 27°0.02
44 °
Union Center, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.02 in
Chance of precipitation15%
Record high64° (1976)
Record low1° (2000)
Wed, 1844° / 26°0.03
44 °
Union Center, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.03 in
Chance of precipitation13%
Record high68° (2020)
Record low2° (1996)
Thu, 1943° / 27°0.03
43 °
Union Center, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.03 in
Chance of precipitation15%
Record high69° (2003)
Record low3° (1985)
Fri, 2042° / 25°0.01
42 °
Union Center, Friday, 20 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.01 in
Chance of precipitation10%
Record high65° (1990)
Record low-7° (1985)
Sat, 2142° / 24°0.02
42 °
Union Center, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high42°
Average low24°
Average precipitation0.02 in
Chance of precipitation15%
Record high66° (2012)
Record low-11° (1977)
Sun, 2242° / 24°0.02
42 °
Union Center, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high42°
Average low24°
Average precipitation0.02 in
Chance of precipitation15%
Record high64° (2002)
Record low-6° (1985)
Mon, 2340° / 23°0.02
40 °
Union Center, Monday, 23 November
Climate normal for this date — 60-year average.
Average high40°
Average low23°
Average precipitation0.02 in
Chance of precipitation12%
Record high66° (2017)
Record low-12° (1985)
Tue, 2441° / 23°0.01
41 °
Union Center, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high41°
Average low23°
Average precipitation0.01 in
Chance of precipitation5%
Record high67° (1990)
Record low-14° (1996)
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 Union Center, 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 Union Center, 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.