Monthly outlook for Summerville, SD: average high 56.9°, average low 42.3°. That is 5.8° above the climate normal for October. Precipitation is expected on 2 days (about 0.7 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 7 November (69.3°), the coolest 27 October (32.8°).
56.9°/42.3°
Average high / low
+5.8°
Above normal
2 / 3
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
27 October – 5 November
55.2°
48.5°
+3.7°
6 November – 15 November
59.7°
42.4°
+9.6°
16 November – 25 November
at normal
38°
—
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).
Wed, 2857° / 37°0
57 °
Summerville, Wednesday, 28 October
Clear. High 57°, low 37°.
Pressure29.91 inHg
Wind13.5 mph NW
Humidity38%
Visibility6.2 mi
Dew point29°
Thu, 2957° / 35°0
57 °
Summerville, Thursday, 29 October
Clear. High 57°, low 35°.
Pressure30.09 inHg
Wind9 mph SE
Humidity50%
Visibility6.2 mi
Dew point35°
Fri, 3053° / 36°0
53 °
Summerville, Friday, 30 October
Mostly clear. High 53°, low 36°.
Pressure30.27 inHg
Wind11.1 mph E
Humidity68%
Visibility6.2 mi
Dew point38°
Sat, 3160° / 47°0.01
60 °
Summerville, Saturday, 31 October
Light rain. High 60°, low 47°.
Pressure30.00 inHg
Wind13.5 mph SE
Humidity92%
Visibility—
Dew point51°
Sun, 0164° / 48°0
64 °
Summerville, Sunday, 1 November
Overcast. High 64°, low 48°.
Pressure29.88 inHg
Wind13 mph SE
Humidity71%
Visibility—
Dew point49°
Mon, 0252° / 44°0.56
52 °
Summerville, Monday, 2 November
Rain. High 52°, low 44°.
Pressure29.83 inHg
Wind14.7 mph NW
Humidity95%
Visibility—
Dew point50°
Tue, 0348° / 43°0.08
48 °
Summerville, Tuesday, 3 November
Light rain. High 48°, low 43°.
Pressure30.24 inHg
Wind13.7 mph NW
Humidity88%
Visibility—
Dew point42°
Wed, 0452° / 48°0.02
52 °
Summerville, Wednesday, 4 November
Light rain. High 52°, low 48°.
Pressure30.18 inHg
Wind5.3 mph SE
Humidity90%
Visibility—
Dew point48°
Thu, 0553° / 46°0
53 °
Summerville, Thursday, 5 November
Overcast. High 53°, low 46°.
Pressure30.06 inHg
Wind7.9 mph SE
Humidity83%
Visibility—
Dew point46°
Fri, 0661° / 43°0
61 °
Summerville, Friday, 6 November
Overcast. High 61°, low 43°.
Pressure29.94 inHg
Wind10.6 mph S
Humidity60%
Visibility—
Dew point40°
Sat, 0769° / 48°0
69 °
Summerville, Saturday, 7 November
Overcast. High 69°, low 48°.
Pressure29.71 inHg
Wind7.5 mph S
Humidity29%
Visibility—
Dew point29°
Sun, 0862° / 51°0
62 °
Summerville, Sunday, 8 November
Mostly clear. High 62°, low 51°.
Pressure29.65 inHg
Wind22.7 mph NW
Humidity44%
Visibility—
Dew point39°
Mon, 0954° / 41°0
54 °
Summerville, Monday, 9 November
Clear. High 54°, low 41°.
Pressure30.09 inHg
Wind22.6 mph NW
Humidity51%
Visibility—
Dew point32°
Tue, 1052° / 36°0
52 °
Summerville, Tuesday, 10 November
Overcast. High 52°, low 36°.
Pressure30.18 inHg
Wind12.1 mph SE
Humidity53%
Visibility—
Dew point30°
Wed, 1160° / 39°0
60 °
Summerville, Wednesday, 11 November
Overcast. High 60°, low 39°.
Pressure29.83 inHg
Wind5.9 mph NW
Humidity33%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)
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.