Monthly outlook for Clayton, SD: average high 63.4°, average low 46.4°. That is 4.3° above the climate normal for October. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 23 October (75.9°), the coolest 17 October (36.2°).
63.4°/46.4°
Average high / low
+4.3°
Above normal
4 / 3
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
66.6°
57.6°
+5°
27 October – 5 November
58.1°
51.7°
+3.6°
6 November – 15 November
at normal
45.8°
—
October records over 66 years
91.6°3 October 2025All-time high
7.5°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Bridgewater (11 mi).
Sun, 1867° / 47°0
67 °
Clayton, Sunday, 18 October
Clear. High 67°, low 47°.
Pressure30.06 inHg
Wind12.8 mph S
Humidity47%
Visibility6.2 mi
Dew point39°
Mon, 1964° / 47°0
64 °
Clayton, Monday, 19 October
Overcast. High 64°, low 47°.
Pressure30.18 inHg
Wind8.2 mph SE
Humidity61%
Visibility6.2 mi
Dew point45°
Tue, 2068° / 50°0
68 °
Clayton, Tuesday, 20 October
Clear. High 68°, low 50°.
Pressure30.15 inHg
Wind10.9 mph SE
Humidity64%
Visibility6.2 mi
Dew point48°
Wed, 2171° / 54°0
71 °
Clayton, Wednesday, 21 October
Clear. High 71°, low 54°.
Pressure30.09 inHg
Wind10.3 mph S
Humidity62%
Visibility—
Dew point52°
Thu, 2275° / 53°0
75 °
Clayton, Thursday, 22 October
Partly cloudy. High 75°, low 53°.
Pressure30.12 inHg
Wind14 mph SE
Humidity58%
Visibility—
Dew point53°
Fri, 2376° / 65°0.19
76 °
Clayton, Friday, 23 October
Light rain. High 76°, low 65°.
Pressure29.80 inHg
Wind24.9 mph S
Humidity62%
Visibility—
Dew point58°
Sat, 2464° / 46°0.03
64 °
Clayton, Saturday, 24 October
Light rain. High 64°, low 46°.
Pressure30.27 inHg
Wind20.5 mph NW
Humidity54%
Visibility—
Dew point36°
Sun, 2553° / 40°0.02
53 °
Clayton, Sunday, 25 October
Light rain. High 53°, low 40°.
Pressure30.45 inHg
Wind9.6 mph SE
Humidity33%
Visibility—
Dew point22°
Mon, 2667° / 45°0.11
67 °
Clayton, Monday, 26 October
Light rain. High 67°, low 45°.
Pressure30.03 inHg
Wind15.4 mph SW
Humidity65%
Visibility—
Dew point47°
Tue, 2757° / 41°0
57 °
Clayton, Tuesday, 27 October
Partly cloudy. High 57°, low 41°.
Pressure30.21 inHg
Wind7.9 mph NW
Humidity46%
Visibility—
Dew point32°
Wed, 2861° / 43°0
61 °
Clayton, Wednesday, 28 October
Partly cloudy. High 61°, low 43°.
Pressure30.12 inHg
Wind12.3 mph S
Humidity43%
Visibility—
Dew point34°
Thu, 2951° / 44°0.77
51 °
Clayton, Thursday, 29 October
Rain. High 51°, low 44°.
Pressure29.68 inHg
Wind22.8 mph NE
Humidity86%
Visibility—
Dew point42°
Fri, 3053° / 43°0.07
53 °
Clayton, Friday, 30 October
Light rain. High 53°, low 43°.
Pressure30.00 inHg
Wind16.1 mph N
Humidity62%
Visibility—
Dew point37°
Sat, 3162° / 43°0
62 °
Clayton, Saturday, 31 October
Clear. High 62°, low 43°.
Pressure30.18 inHg
Wind8.2 mph W
Humidity53%
Visibility—
Dew point39°
Sun, 0165° / 46°0
65 °
Clayton, Sunday, 1 November
Mostly clear. High 65°, low 46°.
Pressure29.97 inHg
Wind11.3 mph S
Humidity43%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0250° / 35°0.04
50 °
Clayton, Monday, 2 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.04 in
Chance of precipitation17%
Record high74° (2005)
Record low10° (1991)
Tue, 0350° / 34°0.04
50 °
Clayton, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.04 in
Chance of precipitation20%
Record high73° (1978)
Record low5° (1991)
Wed, 0450° / 32°0.01
50 °
Clayton, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.01 in
Chance of precipitation12%
Record high74° (2020)
Record low-13° (1991)
Thu, 0550° / 33°0.04
50 °
Clayton, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.04 in
Chance of precipitation18%
Record high74° (2001)
Record low9° (1990)
Fri, 0649° / 33°0.03
49 °
Clayton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.03 in
Chance of precipitation17%
Record high77° (2020)
Record low4° (1991)
Sat, 0749° / 32°0.03
49 °
Clayton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.03 in
Chance of precipitation10%
Record high74° (2020)
Record low-10° (1991)
Sun, 0848° / 32°0.06
48 °
Clayton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.06 in
Chance of precipitation17%
Record high76° (1999)
Record low1° (1991)
Mon, 0946° / 32°0.13
46 °
Clayton, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.13 in
Chance of precipitation23%
Record high71° (1999)
Record low12° (2018)
Tue, 1044° / 28°0.05
44 °
Clayton, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.05 in
Chance of precipitation20%
Record high65° (2016)
Record low2° (1986)
Wed, 1143° / 27°0.04
43 °
Clayton, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.04 in
Chance of precipitation17%
Record high68° (2005)
Record low-7° (1986)
Thu, 1243° / 27°0.05
43 °
Clayton, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.05 in
Chance of precipitation25%
Record high68° (2005)
Record low3° (1966)
Fri, 1345° / 28°0.04
45 °
Clayton, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.04 in
Chance of precipitation20%
Record high70° (1999)
Record low-12° (1986)
Sat, 1445° / 30°0.02
45 °
Clayton, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.02 in
Chance of precipitation17%
Record high73° (2025)
Record low6° (2014)
Sun, 1545° / 29°0.06
45 °
Clayton, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.06 in
Chance of precipitation22%
Record high66° (2001)
Record low0° (2000)
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 Clayton, 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 Clayton, 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.