Monthly outlook for Rapid Valley, SD: average high 58.5°, average low 41.3°. That is 2.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (80.6°), the coolest 27 October (31.2°).
58.5°/41.3°
Average high / low
+2.4°
Above normal
3 / 3
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
54.6°
55.4°
-0.5°
2 November – 11 November
65°
50.2°
+8.2°
12 November – 21 November
at normal
47°
—
October records over 66 years
92.5°3 October 2025All-time high
-5.4°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Green Valley (2 mi).
Sat, 2455° / 35°0
55 °
Rapid Valley, Saturday, 24 October
Clear. High 55°, low 35°.
Pressure30.39 inHg
Wind13 mph N
Humidity42%
Visibility6.2 mi
Dew point15°
Sun, 2545° / 32°0.04
45 °
Rapid Valley, Sunday, 25 October
Light rain. High 45°, low 32°.
Pressure30.45 inHg
Wind7.5 mph SE
Humidity57%
Visibility6.2 mi
Dew point28°
Mon, 2639° / 32°0.52
39 °
Rapid Valley, Monday, 26 October
Snow. High 39°, low 32°.
Pressure30.45 inHg
Wind5.8 mph E
Humidity84%
Visibility3.8 mi
Dew point34°
Tue, 2745° / 31°0.01
45 °
Rapid Valley, Tuesday, 27 October
Light snow. High 45°, low 31°.
Pressure30.06 inHg
Wind14.3 mph S
Humidity88%
Visibility6.2 mi
Dew point33°
Wed, 2856° / 40°0.01
56 °
Rapid Valley, Wednesday, 28 October
Light rain. High 56°, low 40°.
Pressure30.00 inHg
Wind12.9 mph NW
Humidity46%
Visibility—
Dew point32°
Thu, 2947° / 32°0
47 °
Rapid Valley, Thursday, 29 October
Clear. High 47°, low 32°.
Pressure30.33 inHg
Wind7.6 mph SE
Humidity33%
Visibility—
Dew point15°
Fri, 3055° / 36°0
55 °
Rapid Valley, Friday, 30 October
Overcast. High 55°, low 36°.
Pressure30.03 inHg
Wind16.6 mph S
Humidity45%
Visibility—
Dew point26°
Sat, 3159° / 42°0
59 °
Rapid Valley, Saturday, 31 October
Mostly clear. High 59°, low 42°.
Pressure29.85 inHg
Wind9.6 mph N
Humidity46%
Visibility—
Dew point34°
Sun, 0165° / 42°0
65 °
Rapid Valley, Sunday, 1 November
Partly cloudy. High 65°, low 42°.
Pressure29.83 inHg
Wind16.5 mph S
Humidity37%
Visibility—
Dew point32°
Mon, 0259° / 46°0.04
59 °
Rapid Valley, Monday, 2 November
Light rain. High 59°, low 46°.
Pressure29.65 inHg
Wind13.2 mph N
Humidity77%
Visibility—
Dew point48°
Tue, 0360° / 43°0
60 °
Rapid Valley, Tuesday, 3 November
Overcast. High 60°, low 43°.
Pressure29.68 inHg
Wind17.1 mph N
Humidity48%
Visibility—
Dew point38°
Wed, 0460° / 41°0.01
60 °
Rapid Valley, Wednesday, 4 November
Light rain. High 60°, low 41°.
Pressure29.68 inHg
Wind9.2 mph E
Humidity43%
Visibility—
Dew point33°
Thu, 0563° / 42°0
63 °
Rapid Valley, Thursday, 5 November
Clear. High 63°, low 42°.
Pressure29.80 inHg
Wind29.1 mph W
Humidity18%
Visibility—
Dew point14°
Fri, 0673° / 58°0
73 °
Rapid Valley, Friday, 6 November
Overcast. High 73°, low 58°.
Pressure29.74 inHg
Wind29.8 mph W
Humidity22%
Visibility—
Dew point28°
Sat, 0775° / 55°0
75 °
Rapid Valley, Saturday, 7 November
Clear. High 75°, low 55°.
Pressure29.91 inHg
Wind16.9 mph W
Humidity16%
Visibility—
Dew point23°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0850° / 31°0.06
50 °
Rapid Valley, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.06 in
Chance of precipitation18%
Record high79° (1999)
Record low9° (2003)
Mon, 0947° / 29°0.06
47 °
Rapid Valley, Monday, 9 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.06 in
Chance of precipitation18%
Record high73° (2016)
Record low-4° (1966)
Tue, 1047° / 27°0.04
47 °
Rapid Valley, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high47°
Average low27°
Average precipitation0.04 in
Chance of precipitation17%
Record high70° (2005)
Record low-8° (1986)
Wed, 1145° / 27°0.02
45 °
Rapid Valley, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high45°
Average low27°
Average precipitation0.02 in
Chance of precipitation17%
Record high71° (2005)
Record low-13° (1986)
Thu, 1248° / 28°0.02
48 °
Rapid Valley, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high48°
Average low28°
Average precipitation0.02 in
Chance of precipitation15%
Record high73° (1999)
Record low-8° (1986)
Fri, 1349° / 29°0.04
49 °
Rapid Valley, Friday, 13 November
Climate normal for this date — 60-year average.
Average high49°
Average low29°
Average precipitation0.04 in
Chance of precipitation17%
Record high74° (1999)
Record low-17° (1986)
Sat, 1448° / 30°0.02
48 °
Rapid Valley, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.02 in
Chance of precipitation17%
Record high75° (2025)
Record low2° (2014)
Sun, 1548° / 28°0.01
48 °
Rapid Valley, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high48°
Average low28°
Average precipitation0.01 in
Chance of precipitation10%
Record high71° (2021)
Record low4° (2014)
Mon, 1649° / 28°0.02
49 °
Rapid Valley, Monday, 16 November
Climate normal for this date — 60-year average.
Average high49°
Average low28°
Average precipitation0.02 in
Chance of precipitation5%
Record high71° (2001)
Record low-2° (2014)
Tue, 1747° / 28°0.02
47 °
Rapid Valley, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high47°
Average low28°
Average precipitation0.02 in
Chance of precipitation13%
Record high69° (2001)
Record low2° (2000)
Wed, 1847° / 28°0.03
47 °
Rapid Valley, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high47°
Average low28°
Average precipitation0.03 in
Chance of precipitation15%
Record high72° (2008)
Record low5° (1996)
Thu, 1945° / 28°0.03
45 °
Rapid Valley, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.03 in
Chance of precipitation15%
Record high69° (1989)
Record low2° (1985)
Fri, 2045° / 26°0.02
45 °
Rapid Valley, Friday, 20 November
Climate normal for this date — 60-year average.
Average high45°
Average low26°
Average precipitation0.02 in
Chance of precipitation8%
Record high65° (1990)
Record low-9° (1985)
Sat, 2145° / 26°0.02
45 °
Rapid Valley, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high45°
Average low26°
Average precipitation0.02 in
Chance of precipitation12%
Record high69° (2012)
Record low-8° (1977)
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 Rapid Valley, 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 Rapid Valley, 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.