Monthly outlook for Green Valley, SD: average high 54.9°, average low 39.2°. That is 0.1° above the climate normal for October. Precipitation is expected on 2 days (about 0.9 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (81.6°), the coolest 3 November (30.2°).
54.9°/39.2°
Average high / low
+0.1°
Above normal
2 / 3
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
54.1°
56°
-1.1°
1 November – 10 November
56.1°
50.9°
+2.9°
11 November – 20 November
at normal
47°
—
October records over 66 years
92.5°3 October 2025All-time high
-5.4°26 October 2020All-time low
Fri, 2382° / 50°0
82 °
Green Valley, Friday, 23 October
Light rain. High 82°, low 50°.
Pressure29.62 inHg
Wind8.6 mph S
Humidity35%
Visibility6.2 mi
Dew point49°
Sat, 2453° / 37°0
53 °
Green Valley, Saturday, 24 October
Partly cloudy. High 53°, low 37°.
Pressure30.36 inHg
Wind13.2 mph NW
Humidity42%
Visibility6.2 mi
Dew point16°
Sun, 2547° / 39°0.03
47 °
Green Valley, Sunday, 25 October
Light rain. High 47°, low 39°.
Pressure30.42 inHg
Wind10.2 mph SE
Humidity56%
Visibility6.2 mi
Dew point27°
Mon, 2639° / 37°0.58
39 °
Green Valley, Monday, 26 October
Rain. High 39°, low 37°.
Pressure30.39 inHg
Wind5.9 mph NE
Humidity94%
Visibility2.5 mi
Dew point38°
Tue, 2755° / 35°0.01
55 °
Green Valley, Tuesday, 27 October
Light rain. High 55°, low 35°.
Pressure30.06 inHg
Wind10.1 mph SE
Humidity69%
Visibility—
Dew point35°
Wed, 2847° / 38°0.03
47 °
Green Valley, Wednesday, 28 October
Light rain. High 47°, low 38°.
Pressure30.03 inHg
Wind22.8 mph NW
Humidity62%
Visibility—
Dew point32°
Thu, 2946° / 32°0
46 °
Green Valley, Thursday, 29 October
Overcast. High 46°, low 32°.
Pressure30.27 inHg
Wind12.4 mph N
Humidity56%
Visibility—
Dew point25°
Fri, 3043° / 37°0.22
43 °
Green Valley, Friday, 30 October
Rain. High 43°, low 37°.
Pressure29.97 inHg
Wind10.7 mph SE
Humidity80%
Visibility—
Dew point36°
Sat, 3151° / 40°0
51 °
Green Valley, Saturday, 31 October
Mostly clear. High 51°, low 40°.
Pressure29.77 inHg
Wind18.6 mph NW
Humidity46%
Visibility—
Dew point29°
Sun, 0148° / 35°0
48 °
Green Valley, Sunday, 1 November
Light rain. High 48°, low 35°.
Pressure29.97 inHg
Wind12.8 mph NW
Humidity40%
Visibility—
Dew point23°
Mon, 0249° / 35°0
49 °
Green Valley, Monday, 2 November
Partly cloudy. High 49°, low 35°.
Pressure30.27 inHg
Wind22.1 mph NW
Humidity32%
Visibility—
Dew point18°
Tue, 0351° / 30°0
51 °
Green Valley, Tuesday, 3 November
Clear. High 51°, low 30°.
Pressure30.50 inHg
Wind11.8 mph N
Humidity39%
Visibility—
Dew point20°
Wed, 0453° / 34°0
53 °
Green Valley, Wednesday, 4 November
Overcast. High 53°, low 34°.
Pressure30.33 inHg
Wind7.1 mph S
Humidity22%
Visibility—
Dew point10°
Thu, 0567° / 43°0
67 °
Green Valley, Thursday, 5 November
Clear. High 67°, low 43°.
Pressure30.09 inHg
Wind6.5 mph W
Humidity28%
Visibility—
Dew point28°
Fri, 0669° / 50°0
69 °
Green Valley, Friday, 6 November
Clear. High 69°, low 50°.
Pressure29.91 inHg
Wind6.3 mph E
Humidity28%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Fri, 2045° / 26°0.02
45 °
Green 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)
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.