Monthly outlook for Summerset, SD: average high 62.2°, average low 43.1°. That is 2.4° above the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 4 days and 0.9 inches. The warmest day looks like 9 October (86.8°), the coolest 16 October (29.9°).
62.2°/43.1°
Average high / low
+2.4°
Above normal
4 / 4
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
62.6°
58.4°
+2.3°
18 October – 27 October
61.5°
56.2°
+2.9°
28 October – 6 November
at normal
50.1°
—
October records over 66 years
89.2°3 October 2025All-time high
-6.2°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Blackhawk (3 mi).
Fri, 0987° / 46°0
87 °
Summerset, Friday, 9 October
Mostly clear. High 87°, low 46°.
Pressure29.62 inHg
Wind9.2 mph SW
Humidity16%
Visibility6.2 mi
Dew point34°
Sat, 1085° / 59°0
85 °
Summerset, Saturday, 10 October
Partly cloudy. High 85°, low 59°.
Pressure29.47 inHg
Wind9.6 mph W
Humidity14%
Visibility6.2 mi
Dew point30°
Sun, 1156° / 46°0.04
56 °
Summerset, Sunday, 11 October
Light rain. High 56°, low 46°.
Pressure29.83 inHg
Wind10.7 mph N
Humidity65%
Visibility6.2 mi
Dew point44°
Mon, 1260° / 43°0.04
60 °
Summerset, Monday, 12 October
Light rain. High 60°, low 43°.
Pressure29.83 inHg
Wind11.9 mph SE
Humidity64%
Visibility—
Dew point42°
Tue, 1352° / 43°0.07
52 °
Summerset, Tuesday, 13 October
Light rain. High 52°, low 43°.
Pressure30.09 inHg
Wind10.5 mph SE
Humidity74%
Visibility—
Dew point40°
Wed, 1463° / 50°0.43
63 °
Summerset, Wednesday, 14 October
Rain. High 63°, low 50°.
Pressure29.47 inHg
Wind8.5 mph S
Humidity66%
Visibility—
Dew point51°
Thu, 1553° / 36°0.3
53 °
Summerset, Thursday, 15 October
Snow. High 53°, low 36°.
Pressure29.91 inHg
Wind26.9 mph NW
Humidity78%
Visibility—
Dew point36°
Fri, 1641° / 30°0
41 °
Summerset, Friday, 16 October
Clear. High 41°, low 30°.
Pressure30.65 inHg
Wind20.7 mph NW
Humidity57%
Visibility—
Dew point25°
Sat, 1755° / 32°0
55 °
Summerset, Saturday, 17 October
Clear. High 55°, low 32°.
Pressure30.30 inHg
Wind22.7 mph S
Humidity40%
Visibility—
Dew point29°
Sun, 1856° / 45°0
56 °
Summerset, Sunday, 18 October
Light rain. High 56°, low 45°.
Pressure29.94 inHg
Wind16.3 mph S
Humidity52%
Visibility—
Dew point37°
Mon, 1966° / 45°0
66 °
Summerset, Monday, 19 October
Clear. High 66°, low 45°.
Pressure30.00 inHg
Wind15.4 mph NW
Humidity28%
Visibility—
Dew point28°
Tue, 2063° / 46°0
63 °
Summerset, Tuesday, 20 October
Overcast. High 63°, low 46°.
Pressure30.15 inHg
Wind7.7 mph W
Humidity32%
Visibility—
Dew point30°
Wed, 2170° / 43°0
70 °
Summerset, Wednesday, 21 October
Partly cloudy. High 70°, low 43°.
Pressure29.88 inHg
Wind26.5 mph NW
Humidity18%
Visibility—
Dew point22°
Thu, 2253° / 39°0
53 °
Summerset, Thursday, 22 October
Clear. High 53°, low 39°.
Pressure30.18 inHg
Wind29.2 mph NW
Humidity29%
Visibility—
Dew point18°
Fri, 2361° / 41°0.03
61 °
Summerset, Friday, 23 October
Light rain. High 61°, low 41°.
Pressure29.47 inHg
Wind19.3 mph N
Humidity27%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2455° / 36°0.04
55 °
Summerset, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high55°
Average low36°
Average precipitation0.04 in
Chance of precipitation17%
Record high76° (1978)
Record low12° (2002)
Sun, 2556° / 36°0.02
56 °
Summerset, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high56°
Average low36°
Average precipitation0.02 in
Chance of precipitation12%
Record high76° (2025)
Record low5° (2020)
Mon, 2655° / 35°0.06
55 °
Summerset, Monday, 26 October
Climate normal for this date — 60-year average.
Average high55°
Average low35°
Average precipitation0.06 in
Chance of precipitation17%
Record high74° (2024)
Record low-6° (2020)
Tue, 2753° / 34°0.03
53 °
Summerset, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high53°
Average low34°
Average precipitation0.03 in
Chance of precipitation22%
Record high77° (2016)
Record low14° (2020)
Wed, 2853° / 34°0.07
53 °
Summerset, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high53°
Average low34°
Average precipitation0.07 in
Chance of precipitation22%
Record high75° (2016)
Record low9° (1991)
Thu, 2951° / 33°0.09
51 °
Summerset, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.09 in
Chance of precipitation33%
Record high74° (1968)
Record low2° (1991)
Fri, 3050° / 33°0.04
50 °
Summerset, Friday, 30 October
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.04 in
Chance of precipitation17%
Record high75° (1968)
Record low-3° (1991)
Sat, 3150° / 32°0.04
50 °
Summerset, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.04 in
Chance of precipitation15%
Record high73° (1990)
Record low1° (2002)
Sun, 0149° / 32°0.06
49 °
Summerset, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.06 in
Chance of precipitation17%
Record high72° (2022)
Record low-2° (2002)
Mon, 0249° / 31°0.04
49 °
Summerset, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.04 in
Chance of precipitation18%
Record high73° (2008)
Record low-3° (1991)
Tue, 0349° / 32°0.04
49 °
Summerset, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.04 in
Chance of precipitation20%
Record high74° (2020)
Record low2° (1991)
Wed, 0451° / 31°0.01
51 °
Summerset, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low31°
Average precipitation0.01 in
Chance of precipitation8%
Record high73° (1978)
Record low8° (1995)
Thu, 0550° / 31°0.03
50 °
Summerset, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.03 in
Chance of precipitation17%
Record high77° (2020)
Record low2° (2003)
Fri, 0649° / 30°0.05
49 °
Summerset, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.05 in
Chance of precipitation13%
Record high74° (2020)
Record low1° (2003)
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 Summerset, 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 Summerset, 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.