Monthly outlook for Summerville, SD: average high 55.5°, average low 39.4°. That is 5.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.5 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 1 November (61°), the coolest 30 October (28.9°).
55.5°/39.4°
Average high / low
+5.7°
Above normal
1 / 3
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
54.4°
47.5°
+3.8°
8 November – 17 November
57.3°
41.3°
+8.9°
18 November – 27 November
at normal
36.3°
—
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).
Fri, 3052° / 29°0
52 °
Summerville, Friday, 30 October
Overcast. High 52°, low 29°.
Pressure30.18 inHg
Wind9.9 mph E
Humidity69%
Visibility6.2 mi
Dew point39°
Sat, 3158° / 43°0
58 °
Summerville, Saturday, 31 October
Overcast. High 58°, low 43°.
Pressure30.03 inHg
Wind11 mph SE
Humidity89%
Visibility6.2 mi
Dew point50°
Sun, 0161° / 45°0
61 °
Summerville, Sunday, 1 November
Light rain. High 61°, low 45°.
Pressure30.00 inHg
Wind5.5 mph SE
Humidity85%
Visibility6.2 mi
Dew point50°
Mon, 0255° / 46°0.45
55 °
Summerville, Monday, 2 November
Rain. High 55°, low 46°.
Pressure29.62 inHg
Wind8.5 mph NW
Humidity98%
Visibility4.7 mi
Dew point53°
Tue, 0348° / 38°0
48 °
Summerville, Tuesday, 3 November
Overcast. High 48°, low 38°.
Pressure30.12 inHg
Wind20.3 mph NW
Humidity73%
Visibility—
Dew point38°
Wed, 0455° / 36°0
55 °
Summerville, Wednesday, 4 November
Partly cloudy. High 55°, low 36°.
Pressure30.00 inHg
Wind11 mph NW
Humidity34%
Visibility—
Dew point21°
Thu, 0551° / 39°0
51 °
Summerville, Thursday, 5 November
Clear. High 51°, low 39°.
Pressure29.97 inHg
Wind11.1 mph SE
Humidity57%
Visibility—
Dew point33°
Fri, 0653° / 37°0
53 °
Summerville, Friday, 6 November
Clear. High 53°, low 37°.
Pressure29.80 inHg
Wind13.1 mph SE
Humidity62%
Visibility—
Dew point34°
Sat, 0757° / 42°0
57 °
Summerville, Saturday, 7 November
Clear. High 57°, low 42°.
Pressure29.97 inHg
Wind11.9 mph NW
Humidity45%
Visibility—
Dew point32°
Sun, 0859° / 39°0
59 °
Summerville, Sunday, 8 November
Clear. High 59°, low 39°.
Pressure29.91 inHg
Wind9.2 mph W
Humidity40%
Visibility—
Dew point28°
Mon, 0961° / 43°0
61 °
Summerville, Monday, 9 November
Overcast. High 61°, low 43°.
Pressure29.80 inHg
Wind6.9 mph NW
Humidity30%
Visibility—
Dew point25°
Tue, 1057° / 41°0
57 °
Summerville, Tuesday, 10 November
Overcast. High 57°, low 41°.
Pressure29.65 inHg
Wind15 mph SE
Humidity46%
Visibility—
Dew point31°
Wed, 1160° / 46°0
60 °
Summerville, Wednesday, 11 November
Overcast. High 60°, low 46°.
Pressure29.35 inHg
Wind14.6 mph NW
Humidity36%
Visibility—
Dew point30°
Thu, 1253° / 40°0
53 °
Summerville, Thursday, 12 November
Clear. High 53°, low 40°.
Pressure29.53 inHg
Wind21.5 mph W
Humidity30%
Visibility—
Dew point20°
Fri, 1353° / 38°0
53 °
Summerville, Friday, 13 November
Overcast. High 53°, low 38°.
Pressure29.80 inHg
Wind6.2 mph SW
Humidity29%
Visibility—
Dew point17°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 2336° / 21°0.02
36 °
Summerville, Monday, 23 November
Climate normal for this date — 60-year average.
Average high36°
Average low21°
Average precipitation0.02 in
Chance of precipitation17%
Record high62° (2017)
Record low-16° (1985)
Tue, 2437° / 21°0.01
37 °
Summerville, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high37°
Average low21°
Average precipitation0.01 in
Chance of precipitation5%
Record high58° (1990)
Record low-19° (1985)
Wed, 2534° / 20°0.04
34 °
Summerville, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high34°
Average low20°
Average precipitation0.04 in
Chance of precipitation22%
Record high64° (1960)
Record low-9° (2010)
Thu, 2633° / 19°0.02
33 °
Summerville, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high33°
Average low19°
Average precipitation0.02 in
Chance of precipitation18%
Record high59° (1998)
Record low-16° (1985)
Fri, 2732° / 18°0.02
32 °
Summerville, Friday, 27 November
Climate normal for this date — 60-year average.
Average high32°
Average low18°
Average precipitation0.02 in
Chance of precipitation20%
Record high62° (2017)
Record low-21° (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.