Monthly outlook for Green Grass, SD: average high 60.6°, average low 43.3°. That is 2.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.4 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (81.2°), the coolest 26 October (32.8°).
60.6°/43.3°
Average high / low
+2.7°
Above normal
1 / 3
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
63.9°
57.8°
+3.4°
27 October – 5 November
55°
51.2°
+2.1°
6 November – 15 November
at normal
44.9°
—
October records over 66 years
91.9°4 October 1963All-time high
-4°30 October 1991All-time low
Sun, 1869° / 43°0
69 °
Green Grass, Sunday, 18 October
Clear. High 69°, low 43°.
Pressure30.03 inHg
Wind11.1 mph N
Humidity36%
Visibility6.2 mi
Dew point39°
Mon, 1962° / 42°0
62 °
Green Grass, Monday, 19 October
Clear. High 62°, low 42°.
Pressure30.15 inHg
Wind10.3 mph E
Humidity49%
Visibility6.2 mi
Dew point40°
Tue, 2066° / 45°0
66 °
Green Grass, Tuesday, 20 October
Clear. High 66°, low 45°.
Pressure30.03 inHg
Wind8.5 mph SE
Humidity61%
Visibility6.2 mi
Dew point48°
Wed, 2166° / 47°0
66 °
Green Grass, Wednesday, 21 October
Clear. High 66°, low 47°.
Pressure30.15 inHg
Wind6.9 mph N
Humidity69%
Visibility—
Dew point49°
Thu, 2268° / 49°0
68 °
Green Grass, Thursday, 22 October
Overcast. High 68°, low 49°.
Pressure30.06 inHg
Wind15.6 mph SE
Humidity75%
Visibility—
Dew point52°
Fri, 2381° / 61°0.03
81 °
Green Grass, Friday, 23 October
Light rain. High 81°, low 61°.
Pressure29.44 inHg
Wind21.7 mph S
Humidity46%
Visibility—
Dew point53°
Sat, 2455° / 40°0
55 °
Green Grass, Saturday, 24 October
Overcast. High 55°, low 40°.
Pressure30.00 inHg
Wind27.7 mph W
Humidity63%
Visibility—
Dew point33°
Sun, 2548° / 38°0
48 °
Green Grass, Sunday, 25 October
Overcast. High 48°, low 38°.
Pressure30.36 inHg
Wind18.1 mph NW
Humidity32%
Visibility—
Dew point16°
Mon, 2652° / 33°0
52 °
Green Grass, Monday, 26 October
Overcast. High 52°, low 33°.
Pressure30.18 inHg
Wind20.4 mph SE
Humidity29%
Visibility—
Dew point15°
Tue, 2763° / 47°0
63 °
Green Grass, Tuesday, 27 October
Overcast. High 63°, low 47°.
Pressure29.74 inHg
Wind18.4 mph SE
Humidity41%
Visibility—
Dew point33°
Wed, 2848° / 44°0.33
48 °
Green Grass, Wednesday, 28 October
Rain. High 48°, low 44°.
Pressure29.65 inHg
Wind28.2 mph NW
Humidity86%
Visibility—
Dew point42°
Thu, 2962° / 40°0
62 °
Green Grass, Thursday, 29 October
Clear. High 62°, low 40°.
Pressure29.88 inHg
Wind17.2 mph SE
Humidity39%
Visibility—
Dew point29°
Fri, 3055° / 46°0
55 °
Green Grass, Friday, 30 October
Overcast. High 55°, low 46°.
Pressure29.56 inHg
Wind16.8 mph N
Humidity37%
Visibility—
Dew point27°
Sat, 3150° / 43°0
50 °
Green Grass, Saturday, 31 October
Overcast. High 50°, low 43°.
Pressure29.62 inHg
Wind24.2 mph NW
Humidity45%
Visibility—
Dew point27°
Sun, 0152° / 37°0
52 °
Green Grass, Sunday, 1 November
Clear. High 52°, low 37°.
Pressure29.97 inHg
Wind16.7 mph NW
Humidity31%
Visibility—
Dew point18°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0251° / 33°0.02
51 °
Green Grass, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.02 in
Chance of precipitation12%
Record high77° (2022)
Record low3° (1991)
Tue, 0349° / 34°0.03
49 °
Green Grass, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.03 in
Chance of precipitation17%
Record high69° (2020)
Record low-3° (1991)
Wed, 0450° / 32°0.01
50 °
Green Grass, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.01 in
Chance of precipitation8%
Record high77° (1978)
Record low-3° (1991)
Thu, 0549° / 32°0.04
49 °
Green Grass, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.04 in
Chance of precipitation17%
Record high71° (2020)
Record low3° (2003)
Fri, 0649° / 31°0.02
49 °
Green Grass, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.02 in
Chance of precipitation7%
Record high71° (2016)
Record low6° (1991)
Sat, 0749° / 30°0.04
49 °
Green Grass, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.04 in
Chance of precipitation13%
Record high72° (2006)
Record low-4° (1991)
Sun, 0848° / 30°0.04
48 °
Green Grass, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.04 in
Chance of precipitation12%
Record high75° (1999)
Record low5° (2000)
Mon, 0944° / 29°0.04
44 °
Green Grass, Monday, 9 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.04 in
Chance of precipitation17%
Record high69° (2001)
Record low4° (2000)
Tue, 1043° / 26°0.06
43 °
Green Grass, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.06 in
Chance of precipitation25%
Record high68° (1989)
Record low-5° (1986)
Wed, 1141° / 26°0.01
41 °
Green Grass, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.01 in
Chance of precipitation8%
Record high68° (2005)
Record low-11° (1986)
Thu, 1243° / 26°0.02
43 °
Green Grass, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.02 in
Chance of precipitation13%
Record high70° (1999)
Record low-8° (1986)
Fri, 1345° / 28°0.02
45 °
Green Grass, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.02 in
Chance of precipitation15%
Record high68° (1999)
Record low-17° (1986)
Sat, 1444° / 28°0.02
44 °
Green Grass, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.02 in
Chance of precipitation13%
Record high69° (1990)
Record low-9° (2014)
Sun, 1543° / 27°0.02
43 °
Green Grass, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.02 in
Chance of precipitation8%
Record high66° (2001)
Record low1° (2014)
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 Grass, 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 Grass, 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.