Monthly outlook for Green Grass, SD: average high 59.2°, average low 41.6°. That is 1.2° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 22 October (75.8°), the coolest 25 October (33.8°).
59.2°/41.6°
Average high / low
+1.2°
Above normal
1 / 3
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
62.4°
58.3°
+2.3°
24 October – 2 November
53.8°
53.2°
+0.3°
3 November – 12 November
at normal
46.6°
—
October records over 66 years
91.9°4 October 1963All-time high
-4°30 October 1991All-time low
Thu, 1549° / 39°0.01
49 °
Green Grass, Thursday, 15 October
Light rain. High 49°, low 39°.
Pressure30.33 inHg
Wind28.3 mph NW
Humidity51%
Visibility6.2 mi
Dew point28°
Fri, 1652° / 35°0
52 °
Green Grass, Friday, 16 October
Clear. High 52°, low 35°.
Pressure30.71 inHg
Wind5 mph W
Humidity53%
Visibility6.2 mi
Dew point28°
Sat, 1768° / 37°0
68 °
Green Grass, Saturday, 17 October
Clear. High 68°, low 37°.
Pressure30.09 inHg
Wind5.9 mph S
Humidity35%
Visibility6.2 mi
Dew point33°
Sun, 1866° / 44°0
66 °
Green Grass, Sunday, 18 October
Clear. High 66°, low 44°.
Pressure30.15 inHg
Wind13.5 mph NE
Humidity32%
Visibility6.2 mi
Dew point34°
Mon, 1962° / 40°0
62 °
Green Grass, Monday, 19 October
Clear. High 62°, low 40°.
Pressure30.15 inHg
Wind9.4 mph SE
Humidity53%
Visibility—
Dew point39°
Tue, 2069° / 45°0
69 °
Green Grass, Tuesday, 20 October
Mostly clear. High 69°, low 45°.
Pressure29.97 inHg
Wind17.3 mph SE
Humidity54%
Visibility—
Dew point44°
Wed, 2176° / 53°0
76 °
Green Grass, Wednesday, 21 October
Clear. High 76°, low 53°.
Pressure29.77 inHg
Wind17.1 mph SE
Humidity54%
Visibility—
Dew point50°
Thu, 2276° / 53°0.01
76 °
Green Grass, Thursday, 22 October
Light rain. High 76°, low 53°.
Pressure29.50 inHg
Wind22.8 mph W
Humidity57%
Visibility—
Dew point56°
Fri, 2354° / 43°0.01
54 °
Green Grass, Friday, 23 October
Light rain. High 54°, low 43°.
Pressure29.80 inHg
Wind22.5 mph NW
Humidity50%
Visibility—
Dew point35°
Sat, 2447° / 38°0.01
47 °
Green Grass, Saturday, 24 October
Light rain. High 47°, low 38°.
Pressure30.39 inHg
Wind17.4 mph NW
Humidity37%
Visibility—
Dew point19°
Sun, 2553° / 34°0
53 °
Green Grass, Sunday, 25 October
Mostly clear. High 53°, low 34°.
Pressure30.18 inHg
Wind24.8 mph W
Humidity23%
Visibility—
Dew point13°
Mon, 2653° / 45°0
53 °
Green Grass, Monday, 26 October
Overcast. High 53°, low 45°.
Pressure30.06 inHg
Wind19.8 mph NW
Humidity45%
Visibility—
Dew point31°
Tue, 2757° / 36°0
57 °
Green Grass, Tuesday, 27 October
Clear. High 57°, low 36°.
Pressure30.03 inHg
Wind13 mph S
Humidity41%
Visibility—
Dew point27°
Wed, 2858° / 48°0
58 °
Green Grass, Wednesday, 28 October
Overcast. High 58°, low 48°.
Pressure29.71 inHg
Wind21.6 mph NW
Humidity48%
Visibility—
Dew point37°
Thu, 2956° / 38°0
56 °
Green Grass, Thursday, 29 October
Clear. High 56°, low 38°.
Pressure30.03 inHg
Wind20.6 mph SE
Humidity35%
Visibility—
Dew point23°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3051° / 34°0.03
51 °
Green Grass, Friday, 30 October
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.03 in
Chance of precipitation17%
Record high76° (1968)
Record low-4° (1991)
Sat, 3151° / 34°0.03
51 °
Green Grass, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.03 in
Chance of precipitation17%
Record high77° (1990)
Record low-1° (1991)
Sun, 0150° / 34°0.04
50 °
Green Grass, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.04 in
Chance of precipitation15%
Record high72° (1978)
Record low8° (1991)
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)
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.