As of 08:36 CDT

Fort Thompson, SD weather in December

70°

Fort Thompson, Sunday, 9 August, 08:36

Clear. Feels like 70°. High 91°, low 68°.

Pressure29.80 inHg

Wind9.5 mph NE

Humidity66%

Visibility6.2 mi

Dew point58°

See detailed hourly forecast

In December, Fort Thompson, SD averages a high of 30.9° and a low of 15.5°. About 0.8 inches of precipitation fall over the month (4 wet days). The record high is 65.5° (1998) and the record low -33.3° (1990). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	35.1°	21.6°	23%	65.5° (1998)	-9.6° (1960)
2	34.7°	19.6°	15%	62.4° (1998)	-15.2° (1985)
3	34.5°	19.6°	10%	58.5° (2012)	-10.3° (1985)
4	36.5°	19.8°	10%	55.9° (1979)	-2.6° (1972)
5	33.6°	19°	17%	54.7° (2012)	-8.3° (2005)
6	32.2°	16.7°	8%	52.5° (1963)	-25.2° (1972)
7	32°	18.1°	20%	59.4° (2023)	-14.8° (2013)
8	32.5°	17.1°	13%	50.7° (2024)	-17° (2005)
9	32.9°	17.1°	17%	54.7° (2015)	-14.4° (1972)
10	33.6°	16.7°	10%	57° (1979)	-20.6° (1972)
11	33.1°	16.9°	13%	48.7° (1968)	-12.1° (1972)
12	32.5°	15.8°	5%	52.2° (2014)	-19.3° (2000)
13	32.2°	17.2°	15%	54° (1988)	-17.5° (1985)
14	31.8°	16.7°	17%	55.9° (1998)	-14.6° (1985)
15	31.5°	16.9°	17%	50° (1980)	-20.9° (1963)
16	31.3°	16°	15%	53.6° (1962)	-20.2° (2008)
17	30.6°	15.6°	15%	53.2° (2025)	-19.1° (1964)
18	30.2°	13.6°	7%	53.1° (1979)	-30.1° (2016)
19	29.5°	12.9°	17%	50° (1979)	-20° (1989)
20	28.6°	14.4°	13%	48.4° (1979)	-18.8° (1996)
21	29.1°	13.6°	17%	50.9° (1991)	-25.1° (1989)
22	28°	14.2°	10%	55° (2020)	-32.1° (1989)
23	27.5°	12.4°	18%	44.6° (2023)	-33.3° (1990)
24	27.9°	11.8°	17%	45.9° (2025)	-27.9° (1983)
25	30°	13.3°	17%	49.6° (2025)	-22.4° (1983)
26	30°	14.4°	15%	50.2° (2011)	-19.7° (1996)
27	30.4°	15.1°	15%	49.5° (2025)	-7.8° (1993)
28	29.5°	14.7°	13%	50.4° (2002)	-8.9° (1993)
29	26.8°	11.5°	17%	55.9° (1965)	-15.5° (1990)
30	26.6°	10.6°	18%	54.1° (2004)	-29.7° (1990)
31	24.3°	8.2°	10%	48.7° (1999)	-27.2° (1967)