Monthly outlook for Green Valley, SD: average high 58.7°, average low 40.9°. That is 2° above the climate normal for October. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (84.6°), the coolest 28 October (27.5°).
58.7°/40.9°
Average high / low
+2°
Above normal
2 / 3
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
60.3°
56.9°
+1.9°
31 October – 9 November
56.1°
51.4°
+2.6°
10 November – 19 November
at normal
47.3°
—
October records over 66 years
92.5°3 October 2025All-time high
-5.4°26 October 2020All-time low
Thu, 2281° / 54°0
81 °
Green Valley, Thursday, 22 October
Mostly clear. High 81°, low 54°.
Pressure29.88 inHg
Wind9.7 mph SE
Humidity36%
Visibility6.2 mi
Dew point47°
Fri, 2385° / 56°0
85 °
Green Valley, Friday, 23 October
Mostly clear. High 85°, low 56°.
Pressure29.59 inHg
Wind12.3 mph S
Humidity37%
Visibility6.2 mi
Dew point50°
Sat, 2459° / 42°0
59 °
Green Valley, Saturday, 24 October
Clear. High 59°, low 42°.
Pressure30.39 inHg
Wind14.2 mph N
Humidity45%
Visibility6.2 mi
Dew point22°
Sun, 2544° / 39°0.13
44 °
Green Valley, Sunday, 25 October
Light rain. High 44°, low 39°.
Pressure30.45 inHg
Wind7.2 mph E
Humidity80%
Visibility6.2 mi
Dew point35°
Mon, 2644° / 37°0
44 °
Green Valley, Monday, 26 October
Overcast. High 44°, low 37°.
Pressure30.53 inHg
Wind4.9 mph NE
Humidity68%
Visibility—
Dew point31°
Tue, 2743° / 32°0.07
43 °
Green Valley, Tuesday, 27 October
Light snow. High 43°, low 32°.
Pressure30.39 inHg
Wind15.8 mph N
Humidity68%
Visibility—
Dew point32°
Wed, 2846° / 27°0
46 °
Green Valley, Wednesday, 28 October
Partly cloudy. High 46°, low 27°.
Pressure30.53 inHg
Wind13.4 mph S
Humidity61%
Visibility—
Dew point27°
Thu, 2962° / 36°0
62 °
Green Valley, Thursday, 29 October
Overcast. High 62°, low 36°.
Pressure29.80 inHg
Wind14.1 mph S
Humidity32%
Visibility—
Dew point27°
Fri, 3067° / 48°0
67 °
Green Valley, Friday, 30 October
Overcast. High 67°, low 48°.
Pressure29.56 inHg
Wind7.1 mph W
Humidity21%
Visibility—
Dew point23°
Sat, 3155° / 45°0
55 °
Green Valley, Saturday, 31 October
Overcast. High 55°, low 45°.
Pressure29.56 inHg
Wind28.6 mph N
Humidity40%
Visibility—
Dew point31°
Sun, 0151° / 37°0
51 °
Green Valley, Sunday, 1 November
Mostly clear. High 51°, low 37°.
Pressure30.06 inHg
Wind22.6 mph NW
Humidity32%
Visibility—
Dew point20°
Mon, 0251° / 33°0
51 °
Green Valley, Monday, 2 November
Overcast. High 51°, low 33°.
Pressure30.33 inHg
Wind7 mph SE
Humidity35%
Visibility—
Dew point19°
Tue, 0358° / 37°0
58 °
Green Valley, Tuesday, 3 November
Partly cloudy. High 58°, low 37°.
Pressure30.06 inHg
Wind8.5 mph S
Humidity33%
Visibility—
Dew point23°
Wed, 0462° / 47°0
62 °
Green Valley, Wednesday, 4 November
Overcast. High 62°, low 47°.
Pressure29.53 inHg
Wind32.3 mph NW
Humidity35%
Visibility—
Dew point33°
Thu, 0558° / 39°0
58 °
Green Valley, Thursday, 5 November
Overcast. High 58°, low 39°.
Pressure29.91 inHg
Wind16 mph NW
Humidity44%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0652° / 31°0.04
52 °
Green Valley, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low31°
Average precipitation0.04 in
Chance of precipitation12%
Record high78° (2020)
Record low-5° (2003)
Sat, 0752° / 31°0.03
52 °
Green Valley, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low31°
Average precipitation0.03 in
Chance of precipitation13%
Record high77° (1999)
Record low3° (2003)
Sun, 0850° / 31°0.06
50 °
Green 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 °
Green 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 °
Green 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 °
Green 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 °
Green 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 °
Green 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 °
Green 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 °
Green 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 °
Green 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 °
Green 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 °
Green 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 °
Green 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)
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 Green 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 Green 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.