As of 12:31 CDT

Groton, SD weather in May

76°

Groton, Sunday, 9 August, 12:31

Mostly clear. Feels like 76°. High 82°, low 62°.

Pressure29.85 inHg

Wind13.2 mph NE

Humidity46%

Visibility6.2 mi

Dew point54°

See detailed hourly forecast

In May, Groton, SD averages a high of 67.4° and a low of 47.7°. About 3.2 inches of precipitation fall over the month (10 wet days). The record high is 98.6° (2018) and the record low 20.7° (1967). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	59.9°	40.5°	23%	81.5° (2021)	25.5° (1961)
2	61°	39.2°	15%	85.5° (1981)	20.7° (1967)
3	63.5°	40.5°	13%	84.2° (1985)	21.9° (1967)
4	64.6°	42.8°	27%	84.6° (1980)	22.5° (1967)
5	64.4°	44.1°	30%	86.7° (2004)	28.8° (1967)
6	64.4°	44.8°	35%	83.3° (2016)	27.7° (1989)
7	64.2°	44.6°	37%	83.5° (1992)	30° (1976)
8	63.7°	45.5°	42%	86.4° (1985)	30.6° (1984)
9	65.3°	44.6°	42%	85.6° (1985)	26.6° (1966)
10	65.3°	45.7°	40%	89.6° (1987)	28.8° (2019)
11	63.7°	44.8°	38%	88.7° (2025)	27.5° (2008)
12	64.6°	44.6°	35%	89.1° (2025)	27° (2020)
13	65.3°	45.3°	30%	88.9° (2025)	26.6° (1966)
14	67.5°	47.1°	30%	85.6° (2001)	30.9° (1983)
15	68.5°	47.5°	32%	87.1° (1987)	28.6° (2014)
16	69.3°	48.4°	25%	90° (1987)	28.8° (2014)
17	70.2°	49.8°	27%	88.5° (2012)	34° (2002)
18	69.4°	48.9°	20%	87.4° (1988)	31.3° (1968)
19	68.7°	49.8°	33%	90.3° (2009)	32° (2015)
20	68.9°	48.9°	27%	84.7° (1992)	33.4° (2019)
21	68.7°	49.6°	33%	92.8° (1964)	32.9° (1963)
22	70.9°	51.6°	42%	88.3° (1964)	28° (1963)
23	70°	50.9°	42%	85.6° (2023)	38.8° (1995)
24	68.2°	51.4°	45%	88.7° (2018)	37.6° (1995)
25	69.4°	51.3°	30%	88.2° (2018)	39.2° (1983)
26	70.2°	50.4°	37%	90.9° (2018)	33.8° (1992)
27	71.4°	52.3°	35%	98.6° (2018)	33.8° (1965)
28	73.6°	53.4°	32%	91.9° (2006)	34.2° (1965)
29	72.3°	53.6°	40%	88.2° (2010)	40.6° (2005)
30	72°	53.2°	35%	87.1° (2014)	38.1° (2015)
31	71.6°	52.3°	33%	88.3° (2023)	39° (1964)