As of 04:22 MDT

Green Valley, SD weather in December

71°

Green Valley, Sunday, 9 August, 04:22

Clear. Feels like 70°. High 93°, low 69°.

Pressure29.91 inHg

Wind7 mph NW

Humidity35%

Visibility6.2 mi

Dew point42°

See detailed hourly forecast

In December, Green Valley, SD averages a high of 37.1° and a low of 18.6°. About 0.7 inches of precipitation fall over the month (4 wet days). The record high is 70.9° (2021) and the record low -35.9° (1989). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	40.6°	22.8°	18%	70.9° (2021)	-9.8° (1985)
2	40.1°	21.9°	25%	70° (2021)	-21.6° (1985)
3	40.8°	22.1°	8%	61.5° (2017)	-0.8° (1978)
4	41.9°	21.9°	15%	67.5° (1965)	-2.6° (1972)
5	38.3°	20.8°	17%	64° (1987)	-17.1° (1972)
6	37.8°	19.8°	5%	63.1° (2023)	-29° (1972)
7	38.1°	20.1°	13%	65.1° (2024)	-14.4° (1972)
8	38.3°	19.6°	12%	64.6° (2020)	-24.2° (1972)
9	39.6°	19.4°	12%	66° (2015)	-16.4° (1972)
10	39.6°	20.1°	10%	61.7° (1990)	-24.3° (1972)
11	39.7°	19.9°	5%	65.5° (2004)	-14.8° (1972)
12	39°	19.9°	10%	66.2° (2014)	-13.2° (2000)
13	37.8°	19.8°	17%	61.3° (2014)	-6° (1985)
14	37.9°	18.9°	20%	61.7° (1997)	-16.1° (1989)
15	37.8°	19.6°	13%	58.5° (2025)	-26° (1989)
16	37.4°	19.6°	15%	61.3° (1980)	-14.1° (1964)
17	37.8°	19.4°	18%	62.8° (2025)	-24.7° (1964)
18	36.3°	18.1°	10%	65.5° (1979)	-22.7° (2016)
19	36°	16.2°	8%	61.2° (2025)	-14.4° (1989)
20	34.9°	16.9°	10%	56.3° (2003)	-15° (1983)
21	35.4°	16.9°	18%	57.6° (1994)	-30.8° (1983)
22	34.3°	17.2°	15%	62.2° (2025)	-35.9° (1989)
23	34.5°	16°	20%	57.6° (1964)	-25.1° (1983)
24	34.7°	16.7°	12%	58.8° (2025)	-27° (1983)
25	36.9°	17.1°	13%	66.4° (2025)	-19.5° (1983)
26	36.7°	17.8°	17%	60.6° (2025)	-19.1° (1996)
27	36.1°	17.8°	15%	64.8° (1980)	-9.2° (1988)
28	35.2°	16.9°	7%	59.4° (1999)	-6.2° (1983)
29	33.1°	15.3°	18%	59.4° (1965)	-19.7° (1990)
30	33.1°	14.4°	20%	54.1° (1980)	-24° (1990)
31	31.6°	12.9°	20%	59.9° (1963)	-17.9° (1967)