As of 21:04 MDT

Weather in Green Grass, SD

47°Current weather

Green Grass, Wednesday, 14 October, 21:04

Overcast. Feels like 45°. High 54°, low 37°.

Pressure30.15 inHg
Wind4.9 mph S
Humidity80%
Visibility3.7 mi
Dew point41°

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

PeriodForecast highNormalDifference
14 October – 23 October62.4°58.3°+2.3°
24 October – 2 November53.8°53.2°+0.3°
3 November – 12 Novemberat normal46.6°—

October records over 66 years

91.9°4 October 1963All-time high
-4°30 October 1991All-time low
Thu, 1549° / 39°0.01Light rain
49 °Light rain

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°0Clear
52 °Clear

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°0Clear
68 °Clear

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°0Clear
66 °Clear

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°0Clear
62 °Clear

Green Grass, Monday, 19 October

Clear. High 62°, low 40°.

Pressure30.15 inHg
Wind9.4 mph SE
Humidity53%
Visibility—
Dew point39°
Tue, 2069° / 45°0Mostly clear
69 °Mostly clear

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°0Clear
76 °Clear

Green Grass, Wednesday, 21 October

Clear. High 76°, low 53°.

Pressure29.77 inHg
Wind17.1 mph SE
Humidity54%
Visibility—
Dew point50°
Thu, 2276° / 53°0.01Light rain
76 °Light rain

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°0.01Light rain
54 °Light rain

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°0.01Light rain
47 °Light rain

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°0Mostly clear
53 °Mostly clear

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°0Overcast
53 °Overcast

Green Grass, Monday, 26 October

Overcast. High 53°, low 45°.

Pressure30.06 inHg
Wind19.8 mph NW
Humidity45%
Visibility—
Dew point31°
Tue, 2757° / 36°0Clear
57 °Clear

Green Grass, Tuesday, 27 October

Clear. High 57°, low 36°.

Pressure30.03 inHg
Wind13 mph S
Humidity41%
Visibility—
Dew point27°
Wed, 2858° / 48°0Overcast
58 °Overcast

Green Grass, Wednesday, 28 October

Overcast. High 58°, low 48°.

Pressure29.71 inHg
Wind21.6 mph NW
Humidity48%
Visibility—
Dew point37°
Thu, 2956° / 38°0Clear
56 °Clear

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°0.03Climate 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)
Mon, 0944° / 29°0.04Climate normal
44 °Climate normal

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°0.06Climate normal
43 °Climate normal

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°0.01Climate normal
41 °Climate normal

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°0.02Climate normal
43 °Climate normal

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.