As of 20:19 MDT

Weather in Green Grass, SD

66°Current weather

Green Grass, Saturday, 10 October, 20:19

Mostly clear. Feels like 64°. High 84°, low 59°.

Pressure29.56 inHg
Wind12.3 mph N
Humidity48%
Visibility6.2 mi
Dew point46°

Monthly outlook for Green Grass, SD: average high 62°, average low 44.6°. That is 1.8° above the climate normal for October. Precipitation is expected on 3 days (about 0.4 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 10 October (83.7°), the coolest 17 October (27.2°).

62°/44.6°
Average high / low
+1.8°
Above normal
3 / 3
Wet days / normal
0.4 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
10 October – 19 October60.9°59.6°+0.7°
20 October – 29 October63.8°56.1°+4.3°
30 October – 8 Novemberat normal49.7°—

October records over 66 years

91.9°4 October 1963All-time high
-4°30 October 1991All-time low
Sun, 1158° / 49°0Overcast
58 °Overcast

Green Grass, Sunday, 11 October

Overcast. High 58°, low 49°.

Pressure29.80 inHg
Wind12.4 mph N
Humidity75%
Visibility6.2 mi
Dew point49°
Mon, 1254° / 46°0.16Rain
54 °Rain

Green Grass, Monday, 12 October

Rain. High 54°, low 46°.

Pressure29.83 inHg
Wind6.2 mph N
Humidity76%
Visibility6.2 mi
Dew point47°
Tue, 1350° / 42°0.13Rain
50 °Rain

Green Grass, Tuesday, 13 October

Rain. High 50°, low 42°.

Pressure30.06 inHg
Wind4 mph NW
Humidity58%
Visibility6.2 mi
Dew point35°
Wed, 1458° / 38°0Clear
58 °Clear

Green Grass, Wednesday, 14 October

Clear. High 58°, low 38°.

Pressure30.30 inHg
Wind1.4 mph NW
Humidity51%
Visibility6.2 mi
Dew point37°
Thu, 1565° / 46°0.07Light rain
65 °Light rain

Green Grass, Thursday, 15 October

Light rain. High 65°, low 46°.

Pressure30.36 inHg
Wind14.8 mph N
Humidity53%
Visibility—
Dew point41°
Fri, 1648° / 34°0Overcast
48 °Overcast

Green Grass, Friday, 16 October

Overcast. High 48°, low 34°.

Pressure30.71 inHg
Wind15.8 mph E
Humidity43%
Visibility—
Dew point25°
Sat, 1748° / 27°0Clear
48 °Clear

Green Grass, Saturday, 17 October

Clear. High 48°, low 27°.

Pressure30.50 inHg
Wind23.6 mph S
Humidity21%
Visibility—
Dew point4°
Sun, 1869° / 41°0Overcast
69 °Overcast

Green Grass, Sunday, 18 October

Overcast. High 69°, low 41°.

Pressure30.03 inHg
Wind13.3 mph S
Humidity31%
Visibility—
Dew point31°
Mon, 1974° / 50°0Clear
74 °Clear

Green Grass, Monday, 19 October

Clear. High 74°, low 50°.

Pressure30.06 inHg
Wind11.5 mph S
Humidity31%
Visibility—
Dew point34°
Tue, 2077° / 54°0Clear
77 °Clear

Green Grass, Tuesday, 20 October

Clear. High 77°, low 54°.

Pressure29.80 inHg
Wind7.8 mph S
Humidity26%
Visibility—
Dew point33°
Wed, 2163° / 52°0Partly cloudy
63 °Partly cloudy

Green Grass, Wednesday, 21 October

Partly cloudy. High 63°, low 52°.

Pressure30.06 inHg
Wind21.9 mph NW
Humidity44%
Visibility—
Dew point37°
Thu, 2262° / 46°0Overcast
62 °Overcast

Green Grass, Thursday, 22 October

Overcast. High 62°, low 46°.

Pressure30.21 inHg
Wind7 mph SE
Humidity45%
Visibility—
Dew point35°
Fri, 2362° / 45°0Partly cloudy
62 °Partly cloudy

Green Grass, Friday, 23 October

Partly cloudy. High 62°, low 45°.

Pressure30.24 inHg
Wind7.9 mph E
Humidity50%
Visibility—
Dew point38°
Sat, 2459° / 43°0Mostly clear
59 °Mostly clear

Green Grass, Saturday, 24 October

Mostly clear. High 59°, low 43°.

Pressure30.21 inHg
Wind13.6 mph SE
Humidity59%
Visibility—
Dew point40°
Sun, 2560° / 42°0Overcast
60 °Overcast

Green Grass, Sunday, 25 October

Overcast. High 60°, low 42°.

Pressure30.03 inHg
Wind15.8 mph S
Humidity72%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2656° / 37°0.04Climate normal
56 °Climate normal

Green Grass, Monday, 26 October

Climate normal for this date — 60-year average.

Average high56°
Average low37°
Average precipitation0.04 in
Chance of precipitation10%
Record high78° (1990)
Record low-3° (2020)
Tue, 2754° / 36°0.02Climate normal
54 °Climate normal

Green Grass, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high54°
Average low36°
Average precipitation0.02 in
Chance of precipitation15%
Record high76° (1983)
Record low8° (2020)
Wed, 2854° / 35°0.06Climate normal
54 °Climate normal

Green Grass, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high54°
Average low35°
Average precipitation0.06 in
Chance of precipitation17%
Record high76° (1985)
Record low16° (1991)
Thu, 2952° / 35°0.11Climate normal
52 °Climate normal

Green Grass, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high52°
Average low35°
Average precipitation0.11 in
Chance of precipitation28%
Record high75° (1968)
Record low6° (1991)
Fri, 3051° / 34°0.03Climate normal
51 °Climate normal

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°0.03Climate normal
51 °Climate normal

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°0.04Climate normal
50 °Climate normal

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°0.02Climate normal
51 °Climate normal

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°0.03Climate normal
49 °Climate normal

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°0.01Climate normal
50 °Climate normal

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°0.04Climate normal
49 °Climate normal

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°0.02Climate normal
49 °Climate normal

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°0.04Climate normal
49 °Climate normal

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°0.04Climate normal
48 °Climate normal

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)

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.