Monthly outlook for Summerville, SD: average high 58.5°, average low 41.9°. That is 5.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 2 days and 0.5 inches. The warmest day looks like 7 November (74°), the coolest 28 October (31.3°).
58.5°/41.9°
Average high / low
+5.3°
Above normal
2 / 2
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
52.6°
50.7°
+1.1°
3 November – 12 November
68.3°
43.9°
+13.6°
13 November – 22 November
at normal
39.9°
—
October records over 66 years
90.1°2 October 1997All-time high
-6.3°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Lemmon (11 mi).
Sun, 2550° / 37°0.02
50 °
Summerville, Sunday, 25 October
Light rain. High 50°, low 37°.
Pressure30.45 inHg
Wind10.8 mph E
Humidity45%
Visibility6.2 mi
Dew point18°
Mon, 2642° / 32°0.31
42 °
Summerville, Monday, 26 October
Snow. High 42°, low 32°.
Pressure30.47 inHg
Wind9.6 mph E
Humidity93%
Visibility2.0 mi
Dew point34°
Tue, 2739° / 32°0.01
39 °
Summerville, Tuesday, 27 October
Light rain. High 39°, low 32°.
Pressure30.00 inHg
Wind9.7 mph SE
Humidity87%
Visibility6.2 mi
Dew point33°
Wed, 2857° / 31°0
57 °
Summerville, Wednesday, 28 October
Overcast. High 57°, low 31°.
Pressure29.97 inHg
Wind6.9 mph SE
Humidity55%
Visibility—
Dew point34°
Thu, 2954° / 37°0
54 °
Summerville, Thursday, 29 October
Overcast. High 54°, low 37°.
Pressure30.00 inHg
Wind10.5 mph E
Humidity66%
Visibility—
Dew point39°
Fri, 3061° / 43°0
61 °
Summerville, Friday, 30 October
Overcast. High 61°, low 43°.
Pressure29.97 inHg
Wind16.9 mph SE
Humidity83%
Visibility—
Dew point46°
Sat, 3156° / 47°0.05
56 °
Summerville, Saturday, 31 October
Light rain. High 56°, low 47°.
Pressure29.83 inHg
Wind17.9 mph NW
Humidity85%
Visibility—
Dew point48°
Sun, 0156° / 38°0
56 °
Summerville, Sunday, 1 November
Overcast. High 56°, low 38°.
Pressure30.15 inHg
Wind19.7 mph NW
Humidity28%
Visibility—
Dew point17°
Mon, 0257° / 40°0
57 °
Summerville, Monday, 2 November
Overcast. High 57°, low 40°.
Pressure30.18 inHg
Wind14.7 mph NW
Humidity21%
Visibility—
Dew point14°
Tue, 0357° / 40°0
57 °
Summerville, Tuesday, 3 November
Overcast. High 57°, low 40°.
Pressure30.03 inHg
Wind10.5 mph S
Humidity35%
Visibility—
Dew point23°
Wed, 0465° / 41°0
65 °
Summerville, Wednesday, 4 November
Overcast. High 65°, low 41°.
Pressure29.85 inHg
Wind7.1 mph W
Humidity21%
Visibility—
Dew point17°
Thu, 0572° / 48°0
72 °
Summerville, Thursday, 5 November
Clear. High 72°, low 48°.
Pressure29.77 inHg
Wind9.4 mph NW
Humidity20%
Visibility—
Dew point22°
Fri, 0668° / 54°0
68 °
Summerville, Friday, 6 November
Partly cloudy. High 68°, low 54°.
Pressure30.03 inHg
Wind18 mph NW
Humidity39%
Visibility—
Dew point40°
Sat, 0774° / 53°0
74 °
Summerville, Saturday, 7 November
Overcast. High 74°, low 53°.
Pressure30.18 inHg
Wind9.6 mph W
Humidity41%
Visibility—
Dew point41°
Sun, 0874° / 57°0
74 °
Summerville, Sunday, 8 November
Clear. High 74°, low 57°.
Pressure29.91 inHg
Wind10.9 mph W
Humidity22%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0941° / 26°0.04
41 °
Summerville, Monday, 9 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.04 in
Chance of precipitation15%
Record high69° (2016)
Record low1° (2000)
Tue, 1041° / 24°0.06
41 °
Summerville, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high41°
Average low24°
Average precipitation0.06 in
Chance of precipitation25%
Record high68° (2007)
Record low-8° (1986)
Wed, 1139° / 23°0.01
39 °
Summerville, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high39°
Average low23°
Average precipitation0.01 in
Chance of precipitation10%
Record high65° (2005)
Record low-8° (1986)
Thu, 1241° / 23°0.02
41 °
Summerville, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high41°
Average low23°
Average precipitation0.02 in
Chance of precipitation13%
Record high72° (1999)
Record low-10° (2022)
Fri, 1342° / 25°0.02
42 °
Summerville, Friday, 13 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.02 in
Chance of precipitation13%
Record high65° (1981)
Record low-20° (1986)
Sat, 1442° / 26°0.04
42 °
Summerville, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.04 in
Chance of precipitation20%
Record high69° (2025)
Record low-14° (2014)
Sun, 1541° / 25°0.02
41 °
Summerville, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.02 in
Chance of precipitation12%
Record high65° (1975)
Record low-7° (2014)
Mon, 1642° / 24°0.01
42 °
Summerville, Monday, 16 November
Climate normal for this date — 60-year average.
Average high42°
Average low24°
Average precipitation0.01 in
Chance of precipitation5%
Record high63° (1979)
Record low-9° (2022)
Tue, 1740° / 24°0.02
40 °
Summerville, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.02 in
Chance of precipitation10%
Record high62° (2001)
Record low2° (1996)
Wed, 1840° / 23°0.03
40 °
Summerville, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high40°
Average low23°
Average precipitation0.03 in
Chance of precipitation20%
Record high62° (2007)
Record low-4° (1996)
Thu, 1938° / 24°0.03
38 °
Summerville, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.03 in
Chance of precipitation18%
Record high63° (2003)
Record low4° (1985)
Fri, 2038° / 22°0.02
38 °
Summerville, Friday, 20 November
Climate normal for this date — 60-year average.
Average high38°
Average low22°
Average precipitation0.02 in
Chance of precipitation13%
Record high62° (1990)
Record low-13° (1985)
Sat, 2138° / 21°0.01
38 °
Summerville, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high38°
Average low21°
Average precipitation0.01 in
Chance of precipitation10%
Record high60° (2012)
Record low-14° (1985)
Sun, 2238° / 22°0.02
38 °
Summerville, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high38°
Average low22°
Average precipitation0.02 in
Chance of precipitation13%
Record high60° (2017)
Record low-7° (1985)
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 Summerville, 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 Summerville, 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.